Catalogo watson-catalogo

Catalogo watson-catalogo
Made in the USA
Since 1878
Steam Traps
Pressure Regulators
Temperature Regulators
Control Valves
Condensate Pumps
Relief Valves
Liquid Drainers
Check Valves
Other Specialty Products
Product Catalog
Manufacturing
High-Quality
Steam & Fluid
Specialty Products
for Industry
Steam Traps
Pressure Regulators
Temperature Regulators
Control Valves
Condensate Pumps
Relief Valves
Liquid Drainers
Check Valves
Other Specialty Products
Manufacturing High-Quality
Steam & Fluid Products for Industry
For over 100 years, Watson McDaniel has been manufacturing a wide range
of steam specialty and fluid products for the industrial marketplace. These time-tested products have made the operation of steam, compressed air, heat transfer and
fluid systems substantially more effective and efficient.
In 1995, Watson McDaniel received its ISO 9001 Quality Certification as
industry recognition of our continued commitment to world class manufacturing,
assembly and quality control procedures. This level of quality certification assures
our customers unequaled dependability of our products. Our manufacturing facilities, with over fifty computer numerical controlled (CNC) machining centers,
is considered the most modern in the industry. This gives us both the capacity
and capability to rapidly respond to our customers' needs.
Watson McDaniel serves the global marketplace with a network of Manufacturers,
Representatives, Distributors, Manufacturing Plants and Sales Offices located
throughout the world. In 1997, a Manufacturing Plant and Sales Office was opened
in Shanghai, China to fulfill the growing demands of steam specialty products in the
Far East. The success of this operation has allowed us to quickly deliver products
with competitive prices to our customers throughout this region.
The structure of our operation affords us the ability to give highly personalized attention to each and every customer. Most importantly, this structure gives us the ability
to respond immediately to our customers' requests as well as providing highly costeffective products within the global marketplace. We are confident that you will
want to consider our products when choosing a solution for your steam
system and fluid applications.
428 Jones Boulevard
Limerick Airport Business Center
Pottstown PA • 19464
Tel. 610.495.5131
Fax. 610.495.5134
www.watsonmcdaniel.com
• Thermodynamic • Thermostatic • Float & Thermostatic • Inverted Bucket
• Universal Style Steam Traps (Universal Connectors & Modules)
• Clean Steam • Bi-Metallic • Manifolds
Condensate Return Pumps
•
•
•
•
Page 73 - 115
PUMPS
Non-Electric Condensate Return Pumps – PMP Series
Standard & Customized Skid Mounted Systems • Receiver Tanks
Pump-Trap Combinations • Accessories & Options • Insulation Jackets
Gauge Glass • Cycle Counters • Electric Condensate Pumps
Page 116 - 151
REGULATING VALVES
Page 152-183
REGULATING VALVES
DIRECT-OPERATED
Pilot-Operated Regulating Valves
PILOT-OPERATED
Table of Contents
Page 2- 72
• Back Pressure • Temperature • Pressure & Temperature
• Solenoid On/Off • Differential Pressure • Air-Operated
• Pneumatic Temperature Controller • Noise Attenuators
Direct-Operated Pressure &
Temperature Regulating Valves
• Pressure • Back Pressure & Relief Valves • Temperature
Page 184-205
• Pneumatic Control Valves • Electropneumatic (I/P) Transducer
• Control Loops • Electronic PID Controllers • Air Filter/Regulator
• RTD & Thermocouple Temperature Sensors • Thermowells
Page 206-223
• Float Type • Inverted Bucket • Thermodynamic
• Guided Float Type • Installation Guidelines
•
•
•
•
Page 224-260
Steam Humidifiers • Safety Relief Valves • Strainers • Mixing Tees • Ejectors
Air Eliminators • Air Vents • Separators • Exhaust Heads • Vacuum Breakers
Check Valves • Freeze Protection • Scald Protection • Drip Pan Elbows
Flash Tanks • Steam Trap Test Valves
Page 261-321
• Formulas, Conversions & Guidelines • Steam Properties & Flow Characteristics
• Fluid Flow in Piping • Pipe, Fitting & Flange Specifications
• Steam Trap Applications • Regulating Valve Applications
• Pressure Motive Pump (PMP) Applications
PRODUCT CROSS REFERENCE
ENGINEERING
Engineering Data
SPECIALTY
PRODUCTS
Specialty Products
LIQUID
DRAINERS
Liquid Drainers
CONTROL
VALVES
Control Valves
STEAM TRAPS
Steam Traps
322-329
To download any portion of this catalog go to:
www.watsonmcdaniel.com
1
STEAM TRAPS
Steam Traps
WD600
WD600S
WD700S
WD900S
WD3600
THERMODYNAMIC
6-15
Model
Body Material
WD600
Stainless Steel
WD600S
Sizes
Connections
600
3/8” – 1”
NPT
6-7
Stainless Steel
600
1/2”, 3/4”, 1”
NPT
8-9
WD700S
Alloy Steel
600
1/2”, 3/4”, 1”
NPT, SW, FLG
10-11
WD900S
Alloy Steel
900
1/2”, 3/4”, 1”
NPT, SW, FLG
12-13
WD3600
Alloy Steel
3600
1/2”, 3/4”, 1”
BW, SW, FLG
14-15
WT1000
WT2500
WT2000C
PMO (PSIG)
WT3000
WT4000
WT5000
THERMOSTATIC
2
Model
Body Material
WT1000
Stainless Steel
WT2500
Page No.
TT25B/TT125
16-27
PMO (PSIG)
Sizes
Connections
300
1/2”, 3/4”
NPT
16
Cast Iron
250
1/2”, 3/4”
NPT
17
WT2000C
Stainless
650
1/2”, 3/4”
NPT
18-19
WT3000
Stainless Steel
650
1/2”, 3/4”
NPT, SW, FLG
20-21
WT4000
Stainless Steel
300
3/4”, 1”
NPT, SW, FLG
22-23
WT5000
Stainless Steel
650
3/8” – 1”
NPT, SW
24-25
TT25B/TT125
Brass
25/125
1/2”, 3/4”
NPT
26-27
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Page No.
STEAM TRAPS
Steam Traps
FT
FT600 & FT601
FTE & FTES
FTT
WFT
FLOAT & THERMOSTATIC
Model
28-40
Body Material
PMO (PSIG)
Sizes
Connections
Page No.
75
3/4” – 2”
NPT
28-29
450
3/4” – 4”
NPT, SW, FLG
30-33
11/2”, 2”, 21/2”
NPT, SW, FLG
34-35
FT
Cast Iron
FT600/FT601
Carbon Steel/Stainless Steel
FTE/FTES
Ductile Iron/Cast Steel
FTT
Ductile Iron
300
1/2” – 2”
NPT
36-37
WFT
Cast Iron
250
3/4” – 2”
NPT
38-40
WSIB/WSIBH
1031
1032
200/300
1041
1034
1042
INVERTED BUCKET
Model
Body Material
WSIB/WSIBH
Stainless Steel
IB Series
103X/104X
Cast Iron
1044
41-45
PMO (PSIG)
Sizes
Connections
450
1/2”, 3/4”
NPT, SW
250
1/2” – 11/2”
NPT
Page No.
41
42-45
PMO = Maximum Operating Pressure
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
3
STEAM TRAPS
Steam Traps
WU450
WU450S
WU450SB
WU450S-LR
WU450SB-LR
WU450S-RL
WU450SB-RL
WU450 Series UNIVERSAL CONNECTORS
Model
WU450 Series
Type
Body
Material
Universal
Connectors
WSIB450/WSIB450H
PMO
Sizes
Connections
Page
No.
NPT, SW, FLG
46-51
(PSIG)
Stainless Steel
WFT450
46-51
Trap Module
Dependent
WD450
1/2”, 3/4”, 1”
WD450SM
WT450
450 Series UNIVERSAL STEAM TRAP MODULES
Model
Type
Body
Material
PMO
52-57
Sizes
Connections
Page
No.
450
Use WU450SM
connector
Universal Conn.
52
225
Use WU450 & WU450SM
connectors
Universal Conn.
53
450
Use WU450 connector
Universal Conn.
54
(PSIG)
WSIB450/
WSIB450H
Inverted Bucket
WFT450
Float & Thermostatic
WD450/WD450SM
Thermodynamic
Stainless
Steel
Stainless
Steel
WD600LSM-HP
High Pressure
Thermodynamic
Stainless
Steel
600
Use WU450SM connector
Universal Conn.
55
WT450
Thermostatic
Stainless
Steel
450
Use WU450 connector
Universal Conn.
56
WB450
Bi-Metallic
Stainless
Steel
450
Use WU450 connector
Universal Conn.
57
Stainless
Steel
450 Series UNIVERSAL STYLE STEAM TRAPS (Trap Module with Connectors)
4
WB450
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
58-61
STEAM TRAPS
Steam Traps
FDA400
FDA500
FDA600
FDA800
CLEAN STEAM
Model
62-65
Body Material
PMO (PSIG)
Sizes
Connections
Page No.
FDA400
Stainless Steel
90
1/2”, 3/4”
Tri-Clamp
62
FDA500
Stainless Steel
90
1/2”, 3/4”, 1”
Tri-Clamp, NPT, TW
63
FDA600
Stainless Steel
110
1/2”, 3/4”, 1”
Tri-Clamp, NPT, TW
64
FDA800
Stainless Steel
150
1/2”
Tri-Clamp, NPT, TW
65
WPN
BI-METALLIC
66-69
Model
Body Material
PMO (PSIG)
Sizes
WPN
Alloy Steel or Carbon Steel Variation
470-2700
1/2” – 2”
FM
Connections
NPT, FLG, SW, BW
f
Page No.
66-69
FSM
MANIFOLDS
70-72
Model
Body Material
FM/FSM
Carbon Steel/Forged Steel
PMO (PSIG)
720/600
Sizes
1/2”, 3/4”
Connections
NPT, SW
Page No.
70-72
PMO = Maximum Operating Pressure
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
5
STEAM TRAPS
STEAM TRAPS
WD600
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermodynamic Steam Trap
Model
Sizes
Connections
Body Material
Options
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WD600, WD600L
3/8”, 1/2”, 3/4”, 1”
NPT
Stainless Steel 420F
Insulation Cap
600 PSIG
800ºF
600 PSIG up to 800ºF
800ºF @ 600 PSIG
T Y P I C A L A P P L I C AT I O N S
I N S TA L L AT I O N
DRIP, TRACER: The WD600 thermodynamic steam trap is
commonly used as a drip trap on steam mains and steam
supply lines. These traps can be used on tracing applications;
however, thermostatic traps are normally recommended for
this service. Ideal for outdoor applications that are subject
to freezing and for superheated steam conditions.
Trap can be installed in any position; however, horizontal is
preferred. Installation should include isolation valves and a 20
mesh strainer. Do not weld as damage can occur to the seat area.
HOW IT WORKS
The thermodynamic trap has cyclic on-off operation with a
disc that is pushed open by incoming condensate and closes
tightly when steam tries to escape.
MAINTENANCE
Dirt is the most common cause of premature failure. For full
maintenance details, see Installation and Maintenance Manual.
OPTIONS
An insulation cap is available to reduce cycle rates and steam loss
in rain, snow, or cold environments.
F E AT U R E S
• High pressure applications up to 600 PSIG
• Hardened stainless steel seat and disc for extended service
life even at high pressure
• Single trap will operate over the entire pressure range of
3.5-600 PSIG (Not recommended for use below 10 PSI)
• Suitable for superheated steam
• Freezeproof when trap is piped in a vertical orientation
for complete drainage of condensate
• Three-hole balanced discharge extends life of the seat area
• Trap will function in any orientation (horizontal preferred)
S A M P L E S P E C I F I C AT I O N
The steam trap shall be a thermodynamic disc type with all
stainless steel construction. Integral seat design and disc to be
hardened for long service life. Unit shall be capable of installation
in any orientation and self-draining when mounted vertically.
6
WD600L
WD600L is a low capacity version of the standard
WD600 model.
1/2” WD600L has the same capacity as the 3/8” WD600.
3/4” WD600L has the same capacity as the 1/2” WD600.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WD600
Thermodynamic Steam Trap
B
FLOW
Insulation
Cap
C
A
D I M E N S I O N S & W E I G H T S – inches/pounds
Size/Model
Connection
A
B
3/8” WD600
NPT
1.375
1/2” WD600
NPT
1.5
3/4” WD600
NPT
1.75
1”
WD600
Cover
C
Weight (lbs)
1.6875
2
0.75
2
2.6875
1.25
2.375
2.8125
2.0
NPT
2.125
2.8125
3.8175
3.0
1/2” WD600L
NPT
1.5
1.8125
2.718
1.0
3/4” WD600L
NPT
1.5
2.25
2.75
1.75
Disc
3-Hole
Balanced
Discharge
M AT E R I A L S
HOW TO SIZE/ORDER
Select working pressure; follow column down to correct capacity
(lbs/hr) block. Example:
Body
Disc
Cover
Insulation Cap
Application: 650 lbs/hr at 30 PSIG working inlet pressure
Size/Model: 3/4” WD600
Stainless
Stainless
Stainless
Stainless
Steel,
Steel,
Steel,
Steel,
AISI 420F
AISI 420
AISI 416
AISI 304
C A PA C I T I E S – Condensate (lbs/hr)
Size/Model
3.5
5
10
15
20
25
30
40
Steam Inlet Pressure (PSIG)
50
75
100 150 200
250
300
350
400
3/8” WD600
1/2” WD600L
180
185
190
195
200
215
220
230
250
310
375
500
710
800
825
900 1070 1120 1185 1 2 9 0
1/2” WD600
3/4” WD600L
300
315
350
380
415
440
470
515
580
710
825
1020 1165 1300 1440 1565 1670 1775 1880 1960 2 0 6 0
3/4” WD600
415
430
475
520
565
610
650
720
825
1020 1185 1480 1710 1950 2110 2265 2490 2625 2780 2985 3140
1”
650
680
740
815
885
940 1000 1080 1225 1500 1800 2215 2625 2935 3300 3600 3875 4120 4350 4560 4840
WD600
620
450
500
550
600
Notes: 1) Maximum back pressure not to exceed 80% of inlet pressure (measured in absolute pressure) or trap may not close.
2) For optimum performance, recommended for operating pressure above 10 PSIG.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
7
STEAM TRAPS
STEAM TRAPS
WD600S
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermodynamic Steam Trap
Model
Sizes
Connections
Body Material
Options
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WD600S, WD600LS
1/2”, 3/4”, 1”
NPT
Stainless Steel 420F
Blowdown Valve, Insulation Cap
600 PSIG
750ºF
915 PSIG up to 250ºF
610ºF @ 750 PSIG
WD600S
Strainer
WD600SB
Strainer & Blowdown Valve
T Y P I C A L A P P L I C AT I O N S
S A M P L E S P E C I F I C AT I O N
DRIP, TRACER: The WD600S thermodynamic steam trap
is commonly used as a drip trap on steam mains and steam
supply lines. Supplied with integral strainer and optional
blowdown valve to protect the trap from contamination. These
traps can be used on tracing applications; however, thermostatic
traps are normally recommended for this service. Ideal for
outdoor applications that are subject to freezing and for
superheated steam conditions.
The steam trap shall be all stainless steel thermodynamic
type with hardened integral seat and disc with integral strainer
and blowdown valve.
HOW IT WORKS
MAINTENANCE
The thermodynamic trap has cyclic on-off operation with a disc
that is pushed open by incoming condensate and closes tightly
when steam tries to escape.
If trap fails, close isolation valves and remove cap. Clean disc
and seating surfaces and replace cap and disc with groove side
toward seat. NOTE: Do not over tighten cap. For full maintenance
details see Installation and Maintenance Manual.
F E AT U R E S
OPTIONS
• Integral strainer with optional blowdown valve to protect
trap from contamination
• High pressure applications up to 600 PSIG
• Hardened stainless steel seat and disc for extended service
life even at high pressure
• Single trap will operate over the entire pressure range of
3.5-600 PSIG (Not recommended for use below 10 PSI)
• Suitable for superheated steam
• Freezeproof when trap is piped in a vertical orientation
for complete drainage of condensate
• Three-hole balanced discharge extends life of the seat area
• Trap will function in any orientation (horizontal preferred)
8
I N S TA L L AT I O N
Trap can be installed in any position; however, horizontal is
preferred. Installation should include isolation valves. Do not
weld or damage can occur to the seat area.
An insulation cap is available to reduce cycle rates and steam
loss in rain, snow, or cold environments. Blowdown valve, used
for flushing dirt and scale from strainer.
SB = Strainer and Blowdown Valve
L = Low Capacity
WD600LS
WD600LS is a low capacity version of the standard WD600S model.
3/4” WD600LS has the same capacity as the 1/2” WD600S.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WD600S
Thermodynamic Steam Trap
A
Insulation Cap
Cover
B
Disc
FLOW
Body
C
Strainer
Optional
Blowdown
Valve
Bottom Cap
D I M E N S I O N S & W E I G H T S – inches/pounds
Size/Model
Connection
A
B
C
M AT E R I A L S
Weight (lbs)
Series WD600S (Strainer)
1/2" WD600S
NPT
3.156
1.5
2.531
2
1/2" WD600LS
NPT
3.156
1.4375
2.531
1.5
3/4" WD600S
NPT
3.5625 1.625
2.531
2.5
3/4" WD600LS
NPT
3.5625 1.5625
2.531
2.4
1"
NPT
3.75
2.531
2.5
3.5
3.5
2.3
2.0
WD600LS
1.4375
Series WD600SB (Strainer & Blowdown Valve)
1.5
1.4375
NPT
NPT
3/4" WD600SB
NPT
3.5625 1.625
3.5
2.8
3/4" WD600LSB
NPT
3.5625 1.5625
3.5
2.7
1"
NPT
3.725
3.5
2.7
1.4375
Stainless
Stainless
Stainless
Stainless
Stainless
Stainless
Steel,
Steel,
Steel,
Steel,
Steel,
Steel,
AISI
AISI
AISI
AISI
AISI
AISI
420F
420
416
304
304
303
HOW TO SIZE/ORDER
1/2" WD600SB
1/2" WD600LSB
WD600LSB
3.156
3.156
Body
Disc
Cover
Insulation Cap
Strainer Screen
Blowdown Valve
Select working pressure; follow column down to correct capacity
(lbs/hr) block. Example:
Application: 650 lbs/hr at 30 PSIG working inlet pressure
Size/Model: 3/4” WD600S
C A PA C I T I E S – Condensate (lbs/hr)
Size/
Model
1/2” WD600LS
1” WD600LS
1/2” WD600S
3/4” WD600LS
3/4” WD600S
3.5
180
180
5
185
185
10
190
190
15
195
195
20
200
200
25
215
215
30
220
220
40
230
230
Steam Inlet Pressure (PSIG)
50
75
100 150 200
250 310 375 500 620
250 310 375 500 620
300
315
350
380
415
440
470
515
580
710
415
430
475
520
565
610
650
720
825
1020 1185 1480 1710 1950 2110 2265 2490 2625 2780 2985 3140
825
250
710
710
300
800
800
350
825
825
400
900
900
450 500 550 600
1070 1120 1185 1290
1070 1120 1185 1290
1020 1165 1300 1440 1565 1670 1775 1880 1960 2060
Note: Maximum back pressure not to exceed 80% of inlet pressure (measured in absolute pressure) or trap may not close.
Note: For optimum performance, recommended for operating pressure above10 PSIG.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
9
STEAM TRAPS
STEAM TRAPS
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
WD700S
Thermodynamic Steam Trap (Repairable)
Model
Sizes
Connections
Body Material
Options
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WD700S, WD700HS
1/2”, 3/4”, 1”
NPT, SW, FLG
Chrome-Moly Alloy Steel
Blowdown Valve, Insulation Cap
600 PSIG
800ºF
600 PSIG up to 800ºF
800ºF @ 600 PSIG
WD700S
Strainer
WD700SB
Strainer &
Blowdown Valve
WD700S is a Direct Replacement for Yarway Model 721
T Y P I C A L A P P L I C AT I O N S
S A M P L E S P E C I F I C AT I O N
DRIP, TRACER: The WD700S thermodynamic steam trap
is commonly used as a drip trap on steam mains and steam
supply lines. These traps are used on tracing applications;
however, thermostatic traps are normally recommended for
this service. Supplied with an integral strainer and optional
blowdown valve to protect the trap from contamination. The
internal working mechanism of the WD700S can be completely
replaced while the trap body remains in line. Ideal for outdoor
applications that are subject to freezing and for superheated
steam conditions.
The steam trap shall be a thermodynamic style in a chrome-moly
alloy steel body with an integral strainer and optional blowdown
valve. Unit shall have an all stainless steel in-line removable seat and
disc capsule assembly. Trap shall be capable of installation in any
orientation and self-draining when mounted vertically.
HOW IT WORKS
The thermodynamic trap has cyclic on-off operation with a disc
that is pushed open by incoming condensate and closes tightly
when steam tries to escape.
F E AT U R E S
• “Quick Change” capsule design for easy in-line repair
• Integral strainer with optional blowdown valve to protect
trap from contamination
• High pressure applications up to 600 PSIG
• Hardened stainless steel seat and disc for extended service
life even at high pressure
• Single trap will operate over the entire pressure range
4-600 PSIG (Not recommended for use below 10 PSI)
• Suitable for superheated steam
• Freezeproof when trap is piped in a vertical orientation
for complete drainage of condensate
• Weldable body in chrome-moly alloy steel
• Trap will function in any orientation (horizontal preferred)
10
I N S TA L L AT I O N
Trap can be installed in any position; however, horizontal is
preferred. Installation should include isolation valves.
MAINTENANCE
Complete replacement of capsule assembly can be performed
while the steam trap remains in line. For full maintenance details
see Installation and Maintenance Manual.
OPTIONS
Blowdown valve, used for flushing dirt and scale from strainer.
Customized Flanged Connections:
Specify size, face to face dimensions and metallurgy required
for application.
WD700HS
The WD700HS is the high pressure version of the WD700S.
The standard model WD700S will operate over the entire pressure
range, however, the WD700HS will operate more efficiently and
have a longer service life for pressures over 300 PSIG.
WD700S
WD700HS
Standard pressure capsule
High pressure capsule
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
4-300 PSIG
150-600 PSIG
STEAM TRAPS
STEAM TRAPS
WD700S
Thermodynamic Steam Trap
D (Flanged as Req’d) *
C (NPT, SW)
Replacement
Capsule
Gasket
A
Body
FLOW
Strainer
B
Strainer
Plug
* Flanged face-to-face
dimension 9” standard.
For custom sizes consult
factory (9” minimum).
Optional
Blowdown
Valve
DIMENSIONS & WEIGHTS –
Size/Model
Connection
A
inches/pounds
B
C
Weight (lbs)
Series WD700S & WD700HS (Strainer)
1/2"
NPT, SW
2.04
2.50
3.16
2
3/4"
NPT, SW
2.04
2.50
3.55
2
1”
NPT, SW
2.04
2.50
6.31
2
M AT E R I A L S
Series WD700SB & WD700HSB (Strainer & Blowdown Valve)
1/2"
NPT, SW
2.04
3.06
3.16
2.25
3/4"
NPT, SW
2.04
3.06
3.55
2.25
1”
NPT, SW
2.04
3.06
6.31
2.25
Body
Seat
Seat Gasket
Cover
Disc
Retaining Ring
Screen
Strainer Plug, Pipe Plug
Blowdown Valve
Flanges
HOW TO SIZE/ORDER
Select working pressure; follow column down to correct capacity
(lbs/hr) block. Example:
Application: 275 lbs/hr at 100 PSIG working inlet pressure
Size/Model: WD700S, specify pipe size and connections
(NPT, SW, FLG)
Chrome Moly ASTM A-217, GR WC9
Stainless Steel, 420F
Annealed
Stainless Steel, 416
Stainless Steel, 420
Stainless Steel Spring Wire
Stainless Steel, 304
Stainless Steel, 303
Stainless Steel
Carbon Steel
C A PA C I T I E S – Condensate (lbs/hr)
Model
WD700S
(Cold)
WD700S
(Hot)
WD700HS
(Cold)
WD700HS
(Hot)
1
65
2
90
3
110
4
130
5
140
6
160
7
175
8
180
Steam Inlet Pressure (PSIG)
9
10
20
30
40
190 200 280 350 400
50
440
60
500
80
575
100
650
150
800
200 300 400 500 600
925 1200 1450 1600 1750
95
105
115
120
125
130
265
280
320
350
405
460
550
600
650
700
350
400
495
500
620
690
250
280
330
380
410
450
140
180
220
250
Notes: 1) Maximum back pressure not to exceed 80% of inlet pressure (measured in absolute pressure) or trap may not close.
2) For optimum performance, recommended for operating pressure above 10 PSIG.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
11
STEAM TRAPS
STEAM TRAPS
WD900S
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermodynamic Steam Trap
Model
Sizes
Connections
Body Material
Options
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WD900S/WD900LS
1/2”, 3/4”, 1”
NPT, SW, 600# FLG
Low Carbon Chrome-Moly
Insulation Cap
900 PSIG
842ºF
1500 PSIG @ 100ºF
842ºF @ 981 PSIG
T Y P I C A L A P P L I C AT I O N S
S A M P L E S P E C I F I C AT I O N
DRIP: The WD900S/WD900LS thermodynamic steam trap is
primarily used as a drip trap on high pressure steam mains
and steam supply lines. Ideal for outdoor applications that
are subject to freezing and for superheated steam conditions.
The steam trap shall be a thermodynamic style with body
material in chrome-moly alloy steel. Available in size 1/2” and
3/4” Class 600 socket weld ends or flanges. Also available in
ANSI 300 FNPT. 1” Unit shall have hardened stainless steel seat
and disc with a removable stainless steel strainer.
HOW IT WORKS
The thermodynamic trap has cyclic on-off operation with a disc
that is pushed open by incoming condensate and closes tightly
when steam tries to escape.
I N S TA L L AT I O N
Trap can be installed in any position; however, horizontal is
preferred. Installation should include isolation valves.
F E AT U R E S
MAINTENANCE
• “Quick-Change” seat and disc for easy in-line repair
• High pressure applications up to 900 PSIG
• Integral strainer to protect trap from contamination
• Hardened stainless steel seat and disc for extended service
The complete replacement of seat and disc can be performed
while the steam trap remains in line. The strainer should be
periodically cleaned to eliminate dirt, which is the most common
cause of premature failure. For full maintenance details see
Installation and Maintenance Manual.
life even at extremely high pressures
• Single trap model will operate over the entire pressure
range (20-900 PSIG)
• Suitable for superheated steam
• Freezeproof when trap is piped in a vertical orientation
for complete drainage of condensate
• Trap will function in any orientation (horizontal preferred)
OPTIONS
Customized Flanged Connections:
Specify size, face-to-face dimensions and metallurgy required
for application.
WD900LS
The WD900LS is a low capacity version of the standard
WD900S and recommended for working pressures of
120 PSIG and above.
HOW TO SIZE/ORDER
Select working pressure; follow column down to
correct capacity (lbs/hr) block. Example:
Application: 220 lbs/hr at 650 PSIG working inlet pressure
Size/Model: WD900LS, specify pipe size and connections
12
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WD900S
Thermodynamic Steam Trap
NUTS
C Square
NAMEPLATE
COVER
DISC
GASKET
SEAT
B
GASKET
FLOW
GASKET
D
A (NPT, SW)
A (Flanged as Req’d)*
BODY
* Flanged face-to-face dimension 9” standard.
For custom sizes consult factory (9” minimum).
STRAINER
GASKET
GAP
DIMENSIONS & WEIGHTS –
Size/Model
M AT E R I A L S
inches/pounds
Connection
A
B
C
D
1/2" WD900S/WD900LS
NPT, SW
3.6
4.8
2.6
2.1
4.5
1/2" WD900S/WD900LS
*600# FLG
9.0
4.8
2.6
2.1
9.0
3/4" WD900S/WD900LS
NPT, SW
3.6
4.8
2.6
2.1
4.5
3/4" WD900S/WD900LS
*600# FLG
9.0
4.8
2.6
2.1
11.0
1"
WD900S/WD900LS
NPT, SW
6.5
4.8
2.6
2.1
4.5
1"
WD900S/WD900LS
*600# FLG
9.0
4.8
2.6
2.1
11.0
C A PA C I T I E S
Body
Seat
Cover
Strainer Cap
Strainer
Disc
Gasket
Studs
Nuts
Weight (lbs)
Alloy Steel, GR WC9
Stainless Steel, AISI 420
Alloy Steel, GR WC9
Alloy Steel, GR WC9
Stainless Steel, AISI 300
Stainless Steel, AISI 420
Stainless Steel, AISI 304
SA-193, GR B7
SA-194, GR 2H
– Condensate (lbs/hr)
Steam Inlet Pressure (PSIG)
300
400
500
Model
20
50
100
150
200
600
700
800
WD900S
243
411
555
641
700
781
835
874
905
930
951
968
181
210
253
290
325
360
381
405
429
WD900LS
Notes: WD900S:
WD900LS:
900
1) Mnimum recommended working pressure: 20 PSIG.
2) Maximum back pressure not to exceed 80% of inlet pressure (measured in absolute pressure) or trap may not close.
1) Minimum recommended working pressure: 120 PSIG.
2) Maximum back pressure not to exceed 50% of inlet pressure (measured in absolute pressure) or trap may not close.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
13
STEAM TRAPS
STEAM TRAPS
WD3600
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
High-Pressure Thermodynamic Steam Trap
Model
WD3600
Sizes
1/2”, 3/4”, 1”
Connections
BW, SW, 600# FLG, 1500# FLG
Body Material
Forged Alloy Steel
PMO Max. Operating Pressure
3600 PSIG
TMO Max. Operating Temperature
975 ºF @ 3600 psi
1025 ºF @ 2220 psi
PMA Max. Allowable Pressure
2220 PSIG @ 1025 ºF
3600 PSIG @ 975 ºF
TMA Max. Allowable Temperature
1025 ºF @ 2220 PSIG
Note: Connections may limit Pressure & Temperature ratings.
T Y P I C A L A P P L I C AT I O N S
S A M P L E S P E C I F I C AT I O N
DRIP, TRACER: The WD3600 thermodynamic steam trap is
commmonly used as a drip trap on high-pressure steam mains
and steam supply lines. Supplied with an integral strainer to
protect the trap from contamination. The internal working
mechanism of the WD3600 can be completely replaced while
the trap body remains in line. Ideal for outdoor applications that
are subject to freezing and for superheated steam conditions.
The steam trap shall be a thermodynamic style with body
material in forged alloy steel. Available in size 1/2”, 3/4” and 1”
Socket Weld, Butt Weld ends or ANSI 600# &1500# RF flanged
connections. Unit shall have hardened repairable stainless steel
seat and disc with a removable stainless steel sintered strainer.
I N S TA L L AT I O N
HOW IT WORKS
Trap can be installed in any position; however, horizontal is
preferred. Installation should include isolation valves.
The thermodynamic trap has cyclic on-off operation with a disc
that is pushed open by incoming condensate and closes tightly
when steam tries to escape.
MAINTENANCE
F E AT U R E S
Complete replacement of seat and disc can be performed while
the steam trap remains in line. For full maintenance details see
Installation and Maintenance Manual.
• “Quick-Change” seat and disc for easy in-line repair
OPTIONS
• High pressure applications up to 3600 PSIG
Customized Flanged Connections:
Specify size, face to face dimensions and metallurgy required
• Integral strainer to protect trap from contamination
for application. Trap includes strainer. Blowdown option is
Hardened
stainless
steel
seat
and
disc
for
extended
service
•
NOT available.
life even at extremely high pressures
• Steam trap model will operate over the entire pressure
range (100-3600 PSIG)
• Suitable for superheated steam
• Freezeproof when trap is piped in a vertical orientation
for complete drainage of condensate
• Trap will function in any orientation (horizontal preferred)
14
WD3600
High-Pressure Thermodynamic Steam Trap
E
C
D
B
FLOW
A
C
DIMENSIONS & WEIGHTS –
Size/Model
A
1/2”, 3/4”, 1” WD3600
6.3
inches/pounds
B
5.4
M AT E R I A L S
C
D
E
Weight (lbs)
3.5
3.6
4.5
25
HOW TO SIZE/ORDER
Body
Seat
Cover, top & bottom
Strainer
Disc
Gasket
Studs
Nuts
C A PA C I T I E S
Forged Alloy Steel, ASTM 182 F22
Stainless Steel, AISI 420
Forged Alloy Steel, ASTM 182 F22
Sintered Stainless Steel, AISI 300
Stainless Steel, AISI 420
Stainless Steel, AISI 304
SA-193, GR B16
SA-194, GR 4
Select working pressure; follow column down to correct capacity
(lbs/hr) block. Example:
Application: 380 lbs/hr at 1000 PSIG working inlet pressure
Size/Model: WD3600, Specify pipe size and connections
(BW, SW, 600# FLG, 1500# FLG )
– Condensate (lbs/hr)
Model
100
500
1000
1250
1750
Steam Inlet Pressure (PSIG)
2000
2250
2500
2750
3000
3250
3500
3600
3600
WD3600
165
290
380
400
435
470
575
595
610
620
625
500
525
550
Note: Maximum back pressure not to exceed 50% of inlet pressure (measured in absolute pressure) or trap may not close.
15
STEAM TRAPS
STEAM TRAPS
STEAM TRAPS
STEAM TRAPS
WT1000
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermostatic Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WT1000
1/2”, 3/4”
NPT
Stainless Steel
300 PSIG
Saturated Steam Temperature
1032 PSIG @ 100ºF
750ºF @ 800 PSIG
T Y P I C A L A P P L I C AT I O N S
OPTIONS
DRIP, TRACER: The WT1000 thermostatic steam trap was
specifically designed for drip and tracing applications as well
as an air vent for heat exchangers. Like all thermostatic traps,
the WT1000 is small, light, and has excellent air handling
capabilities. The discharging of air on start-up allows steam
to enter the system more quickly.
Special bellows available upon request.
M AT E R I A L S
Trap Housing
Thermal Element
Valve
HOW IT WORKS
The thermostatic trap contains a welded stainless steel thermal
element that expands when heated and contracts when cooled.
When air and condensate are present the trap is in the open
discharge position. When steam reaches the trap the element
expands and closes off tightly.
Stainless Steel, AISI 304L
Stainless Steel, 300 Series
Stainless Steel, AISI 440C
HOW TO SIZE/ORDER
Select working pressure, follow column down to correct capacity
(lbs/hr) block. Example:
Application: 435 lbs/hr at 100 PSIG working inlet pressure
F E AT U R E S
Size/Model: WT1000, Specify pipe size and connections (1/2”, 3/4”)
• Excellent air handling capability which allows steam to
enter and the system to warm up faster; extremely
important during start up
• Welded stainless steel thermal element which resists shock
from water hammer
• Freezeproof when trap is installed in a vertical
orientation allowing for complete condensate drainage
DIMENSIONS –
inches
1.75
1.31
2.5
• Body is produced from solid stainless steel barstock
S A M P L E S P E C I F I C AT I O N
FLOW
The steam trap shall be of thermostatic type with stainless steel
body and stainless steel thermal element.
I N S TA L L AT I O N & M A I N T E N A N C E
Trap can be installed in any position. Steam trap is nonrepairable. If new trap is needed, remove from line and replace.
C A PA C I T I E S – Condensate (lbs/hr)
MODEL
5
10
20
WT1000
95
140
195
Back Pressure as
Percentage of Inlet Pressure
Percentage of Decrease in
Trap Capacity
16
Steam Inlet Pressure (PSIG)
50
100
125
150
200
250
300
305
610
685
750
435
485
530
10
20
25
30
40
50
60
70
80
90
0
0
0
2
5
12
20
30
40
55
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WT2500
Thermostatic Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WT2500
1/2”, 3/4”
NPT
Cast Iron
250 PSIG
406˚F
250 PSIG up to 450ºF
450ºF @ 250 PSIG
Units: Inches
ORIFICE
T Y P I C A L A P P L I C AT I O N S
DRIP, TRACER, PROCESS: The WT2500 thermostatic steam
trap is used for drip, tracing and process applications. Their
compact size, excellent air handling capability and wide
operating pressure range make them a great choice for most
applications. Thermostatic traps are far superior to bucket
traps and thermodynamic disc traps in their ability to remove
air from the system.
3.6
FLOW
HOW IT WORKS
The thermostatic trap contains a welded stainless steel thermal
element that expands when heated and contracts when cooled.
When air and condensate are present, the trap is in the open
discharge position. When steam reaches the trap, the element
expands and closes off tightly.
3.0
S A M P L E S P E C I F I C AT I O N
The steam trap shall be of a thermostatic type with cast iron
body and stainless steel thermal element. Trap must be in-line
repairable with a bolt-on type cover that is sealed with a spiral
wound Stainless Steel AISI 316 gasket. Valve and seat to be
hardened stainless steel.
F E AT U R E S
• The thermal element and seat can be easily removed and
replaced in minutes with the trap body still in-line
• Operates at steam pressures up to 250 PSIG
• Thermostatic traps have excellent air handling capability
allowing air to be discharged rapidly and steam to enter
the system quickly during start up
• Welded stainless steel thermal element that resists shock
from water hammer
• Freezeproof when trap is installed in a vertical
orientation allowing for complete condensate drainage
• Hardened stainless steel seat for extended service life
M A I N T E N A N C E & I N S TA L L AT I O N
Trap can be installed in any position. If replacement is required,
remove the cover and replace the internal working components.
Repair kit includes thermal element, seat and gasket. For full
maintenance details see Installation and Maintenance Manual.
OPTION
Fail-closed bellows available upon request.
SLR = Steam lock release
HOW TO SIZE/ORDER
M AT E R I A L S
Cover & Body
Thermal Element
Valve & Seat
Cover Gasket
Cast Iron ASTM A-126 Class B
Stainless Steel, AISI 302
Stainless Steel, AISI 416
Garlock
C A PA C I T I E S –
condensate (lbs/hr)
Select working pressure; follow column down to correct capacity
(lbs/hr) block. Example:
Application: 1827 lbs/hr at 100 PSIG working inlet pressure
Size/Model: WT2501, 3/16” orifice, Specify pipe size (1/2”, 3/4”)
Model
Orifice
Size
5
10
Steam Inlet Pressure (PSIG)
20
50
100
125
150
200
250
WT2501
3/16”
441
625
882
1391
1827
1969
2095
2305
2483
WT2503
5/16”
903
1271
1811
2861
3754
4043
4300
4730
5093
Notes:
1) 5/16” orifice size is standard and is normally used on process equipment.
2) 3/16” orifice size is offered for reduced capacity and normally used for tracing applications.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
17
STEAM TRAPS
STEAM TRAPS
WT2000C
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermostatic Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WT2000C
1/2”, 3/4”
NPT
Stainless Steel
650 PSIG
Saturated Steam Temp.
1032 PSIG @ 100ºF
750ºF @ 800 PSIG
T Y P I C A L A P P L I C AT I O N S
S A M P L E S P E C I F I C AT I O N
DRIP, TRACER, PROCESS: The WT2000C thermostatic steam
trap is used for drip, tracing, and process applications. Their
compact size, all stainless steel construction, excellent air
handling capabilities, and the ability to operate over a wide
pressure range make them a good choice for most applications.
They can also be used as an air vent on heat exchangers.
Thermostatic traps are far superior to bucket traps and
thermodynamic traps in their ability to remove air from the
system. The discharging of air on start up allows steam to
enter the system more quickly.
Steam trap shall be of thermostatic type with stainless steel body,
thermal element, internal screen, and hardened valve and seat.
HOW IT WORKS
The thermostatic trap contains a welded stainless steel thermal
element that expands when heated and contracts when cooled.
When air and condensate are present the trap is in the open
discharge position. When steam reaches the trap the element
expands and closes off tightly.
I N S TA L L AT I O N
Isolation valves should be installed with trap. Trap can be installed
in any position.
MAINTENANCE
Steam trap is non-repairable. If failure or malfunction occurs,
remove and replace.
OPTIONS
Fail-closed bellows avaiable upon request.
SLR = Steam lock release
F E AT U R E S
• Thermostatic traps have excellent air handling capability
allowing air to be discharged rapidly and steam to enter
the system quickly during start up
• Integral strainer to protect trap from contamination
• Welded stainless steel thermal element which resists shock
from water hammer
• Freezeproof when trap is installed in a vertical
orientation allowing for complete condensate drainage
• Body is produced from stainless steel investment casting
• Hardened stainless steel seat for extended service life
• Will operate at steam pressures up to 650 PSIG
18
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WT2000C
Thermostatic Steam Trap
A
B
FLOW
ORIFICE
C
DIMENSIONS & WEIGHTS –
inches/pounds
Size
A
B
C
Weight (lbs)
1/2”, 3/4”
3.75
1.88
1.31
1.5
M AT E R I A L S
HOW TO SIZE/ORDER
Trap Housing
Thermal Element
Valve & Seat
Strainer Screen
Stainless
Stainless
Stainless
Stainless
C A PA C I T I E S –
Select working pressure; follow column down to correct capacity
(lbs/hr) block. Example:
Steel, ASTM A351-CF3
Steel
Steel, AISI 416
Steel
Application: 1827 lbs/hr at 100 PSIG working inlet pressure
Size/Model: WT2001C, 3/16” orifice, Specify connection size
Condensate (lbs/hr)
Model
Orifice
Size
5
10
20
50
100
125
350
400
450
500
600
650
WT2001C
3/16”
441
625
882
1391
1827
1969
2095
2305
2483
2636
2777
2903
3019
3129
3323
3413
WT2003C
5/16”
903
1271
1811
2861
3754
4043
4300
4730
5093
5413
5702
5959
6195
6421
6820
7004
Notes:
Steam Inlet Pressure (PSIG)
150
200
250
300
1) 5/16” orifice size is standard and is normally used on process equipment.
2) 3/16” orifice size is offered for reduced capacity and normally used for tracing applications.
Back Pressure as
Percentage of Inlet Pressure
Percentage Decrease in
Trap Capacity
10
20
25
30
40
50
60
70
80
90
0
0
0
2
5
12
20
30
40
55
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
19
STEAM TRAPS
STEAM TRAPS
WT3000
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermostatic Steam Trap (Repairable)
Model
Sizes
Connections
Body Material
Options
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WT3000
1/2”, 3/4”
NPT, SW, FLG
Stainless Steel
Strainer, Blowdown Valve
650 PSIG
Saturated Steam Temp.
906 PSIG @ 100ºF
750ºF @ 725 PSIG
T Y P I C A L A P P L I C AT I O N S
I N S TA L L AT I O N
PROCESS: The WT3000 thermostatic steam trap is used for
industrial process applications. Their compact size, all stainless
steel construction, excellent air handling capability and wide
operating pressure range make them a great choice for most
process applications. Thermostatic traps are far superior to
bucket traps and thermodynamic disc traps in their ability to
remove air from the system.
Isolation valves should be installed with trap. Trap can be
installed in any position.
HOW IT WORKS
The thermostatic trap contains a welded stainless steel thermal
element that expands when heated and contracts when cooled.
When air and condensate are present, the trap is in the open
discharge position. When steam reaches the trap, the element
expands and closes off tightly.
F E AT U R E S
• The thermal element and seat can be easily removed and
replaced in minutes with the trap body still in-line
• Operates at steam pressures up to 650 PSIG
• Thermostatic traps have excellent air handling capability
allowing air to be discharged rapidly and steam to enter
the system quickly during start up
• Welded stainless steel thermal element that resists shock
from water hammer
• Freezeproof when trap is installed in a vertical
orientation allowing for complete condensate drainage
• Body is produced from stainless steel investment casting
• Hardened stainless steel seat for extended service life
• Available with integral strainer and blowdown valve
S A M P L E S P E C I F I C AT I O N
The steam trap shall be of a thermostatic type with stainless
steel body, thermal element and internal strainer. Trap must be
in-line repairable with a bolt-on type cover that is sealed with
a spiral wound Stainless Steel AISI 316 gasket. Seat and valve
to be hardened stainless steel.
20
MAINTENANCE
If the trap fails, remove the cover and replace the internal
working components. Repair kit includes thermal element, seat
and gasket. For full maintenance details see Installation and
Maintenance Manual.
OPTIONS
Strainer, blowdown valve, and steam lock release.
S = Strainer (WT3001S)
SB = Strainer and blowdown valve (WT3001SB)
SLR = Steam lock release
Fail-closed Bellows
Special Bellows
For additional sub-cooling of condensate
(down to 43˚F below saturated steam
temperature)
Note: Standard bellows are designed
for approximately 5˚F sub-cool temperature
HOW TO SIZE/ORDER
Refer to the Capacity Chart to determine which model is
required to satisfy the condensate load. (Select steam inlet
pressure, follow column down to correct capacity (lbs/hr) block)
Example:
Application: 3754 lbs/hr at 100 PSIG steam inlet pressure
Size/Model: WT3003S, 5/16” orifice with strainer,
Specify size & connections (NPT, SW, FLG)
Add S to end of the model code if a Strainer is required
Add SB to end of the model code if a Strainer & Blowdown
Valve is required
Examples:
3/4” WT3003S
3/4” connections with strainer, 5/16” orifice
1/2” WT3001SB
1/2” connections with strainer
and blowdown valve, 3/16” orifice
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WT3000
Thermostatic Steam Trap
* Flanged face-to-face
dimension 9” standard.
For custom sizes consult
factory (9” minimum).
2.62 Square
COVER BOLTS
COVER
GASKET
BRACKET
C
ORIFICE
THERMAL
ELEMENT
REPAIR
KIT
SEAT
GASKET
FLOW
BODY
B
STRAINER
STRAINER
PLUG
OPTIONAL
BLOWDOWN
VALVE
A (NPT, SW)
A (Flanged as Req’d) *
DIMENSIONS & WEIGHTS –
Size
Connection
A
M AT E R I A L S
inches/pounds
B
C
Weight (lbs)
Cover & Body
Thermal Element
Valve & Seat
Cover Gasket
Seat Gasket
Cover Bolts
Screen*
Blowdown Valve*
Series WT3000, WT3000S (Strainer)
1/2"
NPT, SW
4.5
2.57
3.13
4.5
3/4"
NPT, SW
4.5
2.57
3.13
4.5
Series WT3000SB (Strainer & Blowdown Valve)
1/2"
NPT, SW
4.5
3.2
3.13
4.5
3/4"
NPT, SW
4.5
3.2
3.13
4.5
S = Strainer only
SB = Strainer and Blowdown
Stainless Steel, AISI 316L
Stainless Steel, AISI 300
Stainless Steel, AISI 416
Stainless Steel, AISI 316
Stainless Steel, AISI 316
Steel, ASTM A193 GR B7 Nickel Plated
0.046 Perforated Stainless Steel AISI 304
Stainless Steel AISI 303
* Screen and blowdown valve are optional
C A PA C I T I E S –
Condensate (lbs/hr)
Pipe
Size
Model
WT3001
Orifice
Size
5
10
20
50
100
125
Steam Inlet Pressure (PSIG)
150
200
250
300
350
400
450
500
600
650
3/16”
441
625
882
1391
1827
1969
2095
2305
2483
2636
2777
2903
3019
3129
3323
3413
5/16”
903
1271
1811
2861
3754
4043
4300
4730
5093
5413
5702
5959
6195
6421
6820
7004
1/2”, 3/4”
WT3003
Notes:
1) 5/16” orifice size is standard and is normally used on process equipment.
2) 3/16” orifice size is offered for reduced capacity.
3) 5/64” low capacity orifice is available upon request.
Back Pressure as
Percentage of Inlet Pressure
Percentage Decrease in
Trap Capacity
10
20
25
30
40
50
60
70
80
90
0
0
0
2
5
12
20
30
40
55
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
21
STEAM TRAPS
STEAM TRAPS
WT4000
Thermostatic Steam Trap (Repairable)
Model
Sizes
Connections
Body Material
Options
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WT4000
3/4”, 1”
NPT, SW, FLG
Stainless Steel
Strainer, Blowdown Valve
300 PSIG
Saturated Steam Temperature
906 PSIG @ 100ºF
750ºF @ 725 PSIG
T Y P I C A L A P P L I C AT I O N S
I N S TA L L AT I O N
PROCESS: The WT4000 thermostatic steam trap is used for
industrial process applications. Their compact size, all stainless
steel construction, excellent air handling capability and wide
operating pressure range make them a great choice for most
process applications. Thermostatic traps are far superior to
bucket traps and thermodynamic disc traps in their ability to
remove air from the system.
Isolation valves should be installed with trap. Trap can be
installed in any position.
HOW IT WORKS
MAINTENANCE
If trap fails, remove cover and replace the internal working
components. Repair kit includes thermal element, seat and
gasket. For full maintenance details see Installation and
Maintenance Manual.
The thermostatic trap contains a welded stainless steel thermal
element that expands when heated and contracts when cooled.
When air and condensate are present, the trap is in the open
discharge position. When steam reaches the trap, the element
expands and closes off tightly.
OPTIONS
F E AT U R E S
SLR = Steam lock release
• The thermal element and seat can be easily removed and
Customized flanged connections: Specify size, face-to-face
dimensions and metallurgy required for application.
replaced in minutes with the trap body still in-line
• Operates at steam pressures up to 300 PSIG
• Thermostatic traps have excellent air handling capability
allowing air to be discharged rapidly and steam to enter
the system quickly during start up
• Welded stainless steel thermal element that resists shock
from water hammer
• Freezeproof when the trap is installed in a vertical
orientation allowing for complete condensate drainage
22
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Strainer, blowdown valve, and steam lock release.
S = Strainer (WT4001S)
SB = Strainer and blowdown valve (WT4001SB)
HOW TO SIZE/ORDER
Refer to the Capacity Chart to determine which model is
required to satisfy the condensate load. (Select steam inlet
pressure; follow column down to correct capacity (lbs/hr) block)
Example:
Application: 5610 lbs/hr at 100 PSIG steam inlet pressure
Size/Model: WT4001S, 5/16” orifice with strainer,
Specify size & connections (NPT, SW, FLG)
• Body is produced from stainless steel investment casting
• Hardened stainless steel seat for extended service life
• Available with integral strainer and blowdown valve
Add SB to end of model code if a Strainer & Blowdown
Valve is required
S A M P L E S P E C I F I C AT I O N
Examples:
The steam trap shall be of thermostatic type with stainless steel
body, thermal element, and internal strainer. Trap must be in-line
repairable with a bolt-on type cover that is sealed with a spiral
wound Stainless Steel AISI 316 gasket. Seat and valve to be
hardened stainless steel.
3/4” WT4001S
3/4” connections with strainer, 5/16” orifice
1” WT4003SB
1” connections with strainer
and blowdown valve, 7/16” orifice
Add S to end of model code if a Strainer is required
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WT4000
Thermostatic Steam Trap
COVER BOLTS
* Flanged face-to-face
dimension 9” standard.
For custom sizes consult
factory (9” minimum).
3” Square
COVER
GASKET
BRACKET
ORIFICE
THERMAL
ELEMENT
C
REPAIR
KIT
SEAT
GASKET
BODY
FLOW
B
STRAINER
STRAINER
PLUG
OPTIONAL
BLOWDOWN
VALVE
A (NPT, SW)
A (Flanged as Req’d)*
DIMENSIONS & WEIGHTS –
Size
Connection
A
M AT E R I A L S
inches/pounds
B
C
Weight (lbs)
Body
Cover
Cover Gasket
Cover Bolts
Thermal Element
Valve & Seat
Seat Gasket
Screen*
Blowdown Valve*
Series WT4000, WT4000S (Strainer)
3/4"
NPT, SW
4.81
2.57
4.12
4.5
1"
NPT, SW
4.81
2.57
4.12
4.5
Series WT4000SB (Strainer & Blowdown Valve)
3/4"
NPT, SW
4.81
3.12
4.12
4.5
1"
NPT, SW
4.81
3.12
4.12
4.5
S = Strainer only
SB = Strainer and Blowdown
Stainless Steel, AISI 316L
Stainless Steel, AISI 316L
Spiral Wound Stainless Steel, AISI 316
Steel, ASTM A193 GR B7 Nickel Plated
Stainless Steel, AISI 302
Hardened Stainless Steel, AISI 416
Stainless Steel, AISI 316
0.046 Perforated Stainless Steel AISI 304
Stainless Steel AISI 300
* Screen and blowdown valve are optional
C A PA C I T I E S –
Model
Condensate (lbs/hr)
Pipe
Size
WT4001
Orifice
Size
1
2
5
10
Steam Inlet Pressure (PSIG)
20
50
100
125
5/16”
605
855
1350
1910
2705
4275
7/16”
940
1325
2095
2960
4190
6620
150
200
250
300
5610
6045 6425
7070
7615
8095
8695
9365 9950 10955 11800 12540
3/4”, 1”
WT4003
Notes:
1) 7/16” orifice size is standard and is normally used on process equipment.
2) 5/16” orifice size is offered for reduced capacity.
Back Pressure as
Percentage of Inlet Pressure
Percentage Decrease in
Trap Capacity
10
20
25
30
40
50
60
70
80
90
0
0
0
2
5
12
20
30
40
55
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
23
STEAM TRAPS
STEAM TRAPS
WT5000
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Adjustable Discharge Temperature Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WT5000
3/8”, 1/2”, 3/4, 1”
NPT, SW
Stainless Steel
650 PSIG
662˚F
900 PSIG
800ºF
T Y P I C A L A P P L I C AT I O N S
TRACER: The WT5000 Series Bimetal Steam Trap is used
in steam tracing applications (process lines, instrumentation
and winterization, general steam jacketing) and small process
applications where accurate control of condensate discharge
temperature is required to utilize the sensible heat of the
condensate.
HOW IT WORKS
Bimetallic plates of dissimilar metals respond to steam
temperature variations, whereby the metals are relaxed at
relatively cool conditions (such as start-up) and the trap is
open for the discharge of condensate. As temperature nears
the preset subcool temperature below saturation, the metals
react and expand, closing the trap and preventing the loss of
live steam. External field adjustability of the bimetal element
allows precise control of the condensate discharge temperature.
S A M P L E S P E C I F I C AT I O N
The condenstate temperature can be field adjusted as follows:
Isolation valves should be installed with trap. Trap can be
installed in any position.
To INCREASE the temperature, turn the adjuster screw:
COUNTERCLOCKWISE
To DECREASE the temperature, turn the adjuster screw:
CLOCKWISE
Note: The lower the set temperature, the more condensate
will back-up in front of the trap inlet connection. Therefore,
consideration should be given to providing adequate piping
to accomodate any such back-up.
The steam trap shall be of thermostatic type with stainless steel
body, seat, valve plug and bimetallic element. Bimetal element
shall be externally adjustable for control of condensate discharge
temperature. Trap must be in-line repairable with a replaceable
bimetal element, valve plug and seat.
I N S TA L L AT I O N
MAINTENANCE
If trap fails, remove cover and replace the internal working
components. Repair kit includes bimetallic element (including
valve stem and plug), seat and gasket. For full maintenance
details see Installation and Maintenance Manual.
F E AT U R E S
• Excellent for various steam tracing and small process
applications using the sensible heat of condendate
• Field adjustable bimetal element allows precise control of
condensate discharge temperature
• Internal screen and seat/plug design help prevent pipe
scale and debris from accumulating on seating surfaces to
provide trouble-free operation
• In-line repairable
24
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WT5000
Adjustable Discharge Temperature Steam Trap
Units: inches
3.25
4.25
3/8” – 1”
NPT, SW
FLOW
2.75 (3/8” & 1/2”)
3.12 (3/4” & 1”)
M AT E R I A L S
Body and Cover
Bimetal Element
Valve Seat
Gaskets
Valve Stem
304 Stainless Steel
GB14
420 Stainless Steel
A240 S31600
420 Stainless Steel
HOW TO SIZE/ORDER
From the chart below, confirm that application capacity requirements are satisfied at the working Inlet Pressure and desired
Set and Discharge Temperatures. Example:
Application: Discharge of 300 lbs/hr at a working inlet pressure of 125 PSIG and 240˚F set temperature
Size/Model: WT5000, Specify pipe size (3/8”, 1/2,” 3/4”, 1”) and connections (NPT, SW)
Note: WT5000 trap can pass up to 336 lbs/hr of condensate at a working inlet pressure of 125 PSIG and
condensate set temperature of 240˚F (see Capacity Chart).
Maximum Trap Capacities at Various Inlet Pressures and Set Temperatures
Set Temperature
15
30
50
100
125
150
– Condensate (lbs/hr)
Steam Inlet Pressure (PSIG)
200
250
300
350
400
450
500
600
650
220˚F
56
70
102
144
161
177
204
228
250
270
289
306
323
354
368
240˚F
116
164
212
300
336
368
425
475
520
562
600
637
671
735
756
260˚F
134
190
245
346
387
424
490
548
600
648
693
735
775
849
883
280˚F
143
202
261
370
413
453
523
584
640
691
739
784
826
905
942
Notes: 1) Capacities in chart are based on discharging condensate to atmosphere with a condensate temperature of 200˚F.
2) Maximum discharge capacity up to 970 lbs/hr, depending on operating condition requirements.
3) Contact factory for additional information including other condensate set and discharge temperatures.
4) To ensure proper operation and eliminate possible steam loss, the Set Temperature should be lower than 27˚F subcool
(degrees below inlet steam saturation temperature).
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
25
STEAM TRAPS
STEAM TRAPS
TT25B/TT125
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermostatic Steam Trap (Repairable)
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
TT25B, TT125
1/2”, 3/4”
NPT
Brass
TT25B 25 PSIG
TT125 125 PSIG
Saturated Steam Temperature
125 PSIG up to 450ºF
450ºF @125 PSIG
T Y P I C A L A P P L I C AT I O N S
S A M P L E S P E C I F I C AT I O N
TT25B/TT125 thermostatic steam traps are predominantly
used in the HVAC industry. They are referred to as radiator traps
because the quick-disconnect right angle connection is found
on most radiator installations. Their excellent air handling
capabilities, compact size, and economical cost make them
a great choice for air vents on heat exchangers or for steam
trap applications on OEM equipment.
The steam trap shall be of thermostatic type with brass or bronze
body and stainless steel thermal element. Trap must be in-line
repairable.
HOW IT WORKS
The thermostatic trap contains a welded stainless steel thermal
element that expands when heated and contracts when cooled.
When air and condensate are present the trap is in the open
discharge position. When steam reaches the trap the element
expands and closes off tightly.
I N S TA L L AT I O N
Isolation valves should be installed with trap. Trap can be
installed in any position.
MAINTENANCE
If the trap fails, remove the cover and replace the internal
working components. Repair kit includes thermal element,
seat and gasket. For full maintenance details see Installation
and Maintenance Manual.
F E AT U R E S
• Excellent air handling capability
• In-line repairable
• Welded stainless steel thermal element
• Stainless seat on TT125
• High thermal efficiency
26
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
TT25B/TT125
Thermostatic Steam Trap
2.12
COVER
1.0
SPRING
ELEMENT
1.19
SEAT
GASKET
A
BODY
DIMENSIONS & WEIGHTS –
inches/pounds
Model
Pipe Size
A
Weight (lbs)
TT25B, TT125
1/2”
2.1875
1.5
TT25B, TT125
3/4”
3.062
1.5
UNION
NUT
Note: Other Union Connections and Lengths are available; consult factory.
HOW TO SIZE/ORDER
M AT E R I A L S
Select differential pressure; follow column down to correct
capacity (lbs/hr) block. Example:
Body
Element
Cover
Spring
Seat
Application: 2100 lbs/hr at 40 PSI differential pressure
Size/Model:
3/4” TT125
C A PA C I T I E S –
UNION
NIPPLE
Condensate (lbs/hr)
Differential Pressure (PSI)
40
65
25
125
Pipe Size
15
1/2”
825
1070
1323
1610
1950
3/4”
1290
1700
2100
2575
3300
Gasket
Union Nipple
Union Nut
Forged Brass, CA 377
Welded Stainless Steel, AISI 302
Forged Brass, CA 377
Stainless Steel, AISI 304
TT25B: Brass ASTM B-21
TT125: Stainless Steel, AISI 303
Brass, ASTM B-21
Brass, ASTM B-16
Brass, ASTM B-16
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
27
STEAM TRAPS
STEAM TRAPS
FT Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float & Thermostatic Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
FT
3/4”, 1”, 11/4”, 11/2”, 2”
NPT
Cast Iron
75 PSIG
Saturated Steam Temperature
75 PSIG up to 450ºF
450ºF @ 75 PSIG
T Y P I C A L A P P L I C AT I O N S
S A M P L E S P E C I F I C AT I O N
DRIP, PROCESS: The FT Series float and thermostatic steam
traps are used for HVAC and light industrial process applications,
and can be applied to unit heaters, water heaters, pressing
machines, heat exchangers, and coils. These traps have
excellent air removal capability making them an excellent
choice for HVAC and process applications requiring quick
start-up.
The trap shall be of float and thermostatic design with cast
iron body. Thermostatic element to be welded stainless steel.
Float and seating material to be stainless steel. Trap must
be in-line repairable.
HOW IT WORKS
Float and thermostatic steam traps have a float and thermostatic
element that work together to remove both condensate and air
from the steam system. The float, which is attached to a valve,
rises and opens the valve when condensate enters the trap.
Air is discharged through the thermostatic air vent to the outlet
side of the trap. The thermostatic air vent closes when steam
enters the trap.
I N S TA L L AT I O N
Isolation valves should be installed with trap. The trap must be
level and upright for the float mechanism to operate.
MAINTENANCE
All internal components can be replaced with the trap body
in-line. Repair kit includes thermostatic element, valve seat
and disc, float and sealing gasket. For full maintenance details
see Installation and Maintenance Manual.
F E AT U R E S
• H-pattern design allows piping from either side of the
steam trap (there are two inlet ports at top and two outlet
ports at bottom)
• Float & Thermostatic traps have excellent air handling
capability allowing air to be discharged rapidly and steam
to enter the system quickly during start up
• Welded stainless steel thermostatic air vent resists shock
from water hammer
• In-line repairable (all internals are attached to cover)
28
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
FT Series
Float & Thermostatic Steam Trap
C
DIMENSIONS & WEIGHTS –
inches/pounds
Model
A
B
C
D
E
Weight
(lbs)
FT-3, FT-4, FT-33
FT-34, FT-73, FT-74
4.125
5.00
5.125
3.125
2.75
7.50
FT-6, FT-35, FT-36
FT-75, FT-76
5.00
6.81
6.47
4.125
3.43
13.0
FT-7, FT-37L, FT-77L
6.375
7.68
8.218
5.25
4.41
21.0
FT-8, FT-38, FT-78
FT-S8-15, FT-S8-75
6.50
11.0
8.968
7.468
4.531
40.0
A
INLET
B
D
OUTLET
M AT E R I A L S
HOW TO SIZE/ORDER
From the capacity chart, select the model that can handle the working
pressure of the system (PMO). Select the trap that will meet the
capacity requirements at the differential pressure. Example:
Application: 1700 lbs/hr at 30 PSIG working pressure and
5 PSI differential pressure
Size/Model: 1” FT-35 or 11/4” FT-36
C A PA C I T I E S –
15
FT-4
FT-6
Body & Cover
Nuts & Bolts
Gasket
Float
Valve & Seat
Thermostatic Assembly
Cast Iron, ASTM A-126 Class B
High-Tensile Steel
Grafoil
Stainless Steel
Stainless Steel
Stainless Steel Bellows & Valve
Condensate (lbs/hr)
PMO Pipe Orifice
Model (PSIG) Size Size
FT-3
E
1/4
1/2
1
2
3
5
10
440
600
830
990
1280
1790
Differential Pressure (PSI)
15
20
25
30
40
50
60
75
3/4”
9/32”
340
15
1”
9/32”
340
440
600
830
990
1280
1790
2150
15
11/4”
9/32”
850
1100
1460
2000
2350
2950
4000
4800
FT-7
15
11/2”
1/2”
1300
1700
2050
2550
2900
3500
4400
5300
FT-8
15
2”
21/32” 2500
3150
4000
5700
6100
6800
8300
9800
FT-S8-15
15
2”
15/16” 4400
5850
7400
9200 10300 12600 15300 18100
FT-33
30
3/4”
11/64”
220
300
405
530
650
890
1210
1485
1705
1865
FT-34
30
1”
11/64”
220
300
405
530
650
890
1210
1485
1705
1865
2010
FT-35
30
1”
1/4”
450
600
880
1205
1420
1845
2560
3230
3715
4100
4405
FT-36
30
11/4”
1/4”
450
600
880
1205
1420
1845
2560
3230
3715
4100
4405
FT-37L
30
11/2”
7/16”
600
800
1200
1680
2210
2600
3500
4500
5200
5700
6100
FT-38
30
2”
13/32” 1550
2045
2625
3560
4260
5660
7890
9440 10500 11360 12095
FT-73
75
3/4”
9/64”
140
195
265
360
430
580
770
990
1110
1210
1290
1430
1560
1680
1830
FT-74
75
1”
9/64”
140
195
265
360
430
580
710
990
1110
1210
1290
1430
1560
1680
1830
FT-75
75
1”
#16
270
360
485
660
780
1020
1430
1740
1980
2200
2420
2670
2910
3135
3370
FT-76
75
11/4”
#16
270
360
485
660
780
1020
1430
1740
1980
2200
2420
2670
2910
3135
3370
FT-77L
75
11/2”
5/16”
340
460
690
900
1200
1400
1900
2350
2700
3000
3250
3750
4150
4500
4700
FT-78
75
2”
5/16”
800
1075
1300
1700
2000
2600
3750
4350
4700
5050
5400
5960
6500
6950
7550
FT-S8-75
75
2”
13/32” 1360
1800
2100
2800
3300
4300
6300
7300
8000
8500
9000 10000 11000 11600 12500
90
125
2010
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
100
2150
29
STEAM TRAPS
STEAM TRAPS
FT600 & FT601 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float & Thermostatic Steam Trap
Model
Sizes
Connections
Body Material
Options
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
FT600 & FT601*
3/4”, 1”, 11/2”, 2”, 3”, 4”
NPT, SW, FLG
Carbon Steel or 316SS
Live Orifice Air Vent
450 PSIG
750ºF
990 PSIG @ 100ºF
750ºF @ 670 PSIG
11/2” & 2”
* FT601 Body Material is 316 SS
FT600 Body Material is Carbon Steel
3/4” & 1”
T Y P I C A L A P P L I C AT I O N S
PROCESS The FT600 & FT601 Series high-pressure float
and thermostatic steam traps are primarily used on industrial
process applications. The excellent air handling capabilities
of float and thermostatic traps make them a better choice than
bucket traps for applications requiring quick system start-up.
These traps have in-line pipe connections. Used in chemical
plants and petrochemical refineries on reboilers, heat
exchangers, and other critical process applications. Model
FT601 is identical to FT600 except body material is 316 SS.
Flanged
11/2” & 2”
HOW IT WORKS
Float and thermostatic steam traps have a float and thermostatic
element that work together to remove both condensate and air
from the steam system. The float, which is attached to a valve,
rises and opens the valve when condensate enters the trap.
Air is discharged through the thermostatic air vent to the outlet
side of the trap. The thermostatic air vent closes when steam
enters the trap.
F E AT U R E S
• Investment cast steel body and cover with class 400
shell rating (670 PSIG @ 750˚F)
• Hardened stainless steel seat and disc for extended service
life even at extreme temperatures and pressures
• In-line repairability is simplified by having all internals
attached to the cover. Studded cover allows for easier
removal of body.
• Welded stainless steel air vent resists shock from
water hammer. Live orifice air vent is available for
superheated applications
• F & T traps discharge condensate immediately as it is
formed (No condensate will back up into the system)
S A M P L E S P E C I F I C AT I O N
The steam trap shall be of the mechanical float type having
cast steel bodies, horizontal in-line connections in NPT, SW,
or flanged, and all stainless steel internals. Incorporated into the
trap body shall be an all stainless steel welded thermal element
air vent which is water hammer resistant. The air vent is to be
located at the high point of trap body to assure proper venting
of non-condensables. The trap body will be in-line renewable.
All bodies and covers shall be class 400 shell design, suitable
for 670 PSIG @ 750ºF.
30
I N S TA L L AT I O N
Installation should include a strainer and isolation valves for
maintenance purposes.
MAINTENANCE
Trap is in-line repairable. Studs are permanently installed into
the cover simplifying the replacement of internal components.
OPTIONS
Live orifice air vent for superheated applications.
M AT E R I A L S
FT 600: Body & Cover
FT 601: Body & Cover
Cover Studs
Cover Nuts
Cover Gasket
Valve Assembly
Gasket, Valve Assembly
Pivot Assembly
Mounting Screws
Float
Air Vent Assembly
Cast Steel, ASTM A-216
316 SS
Steel, AS 193, GR B7
Steel, SA 194, GR 2H
Stainless Steel Reinforced Grafoil
Stainless Steel, AISI 431
Stainless Steel Reinforced Grafoil
Stainless Steel, 17-4 PH
Stainless Steel Hex Head, 18-8
Stainless Steel, ASTM -240, 304
Thermostatic element 304 SS
Optional: Live orifice
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
FT600 & FT601 Series
Float & Thermostatic Steam Trap
FT600 & FT601: 3/4”, 1”, 11/2”, 2”
F min.
(for service)
AA
E
A
D
B
C
DIMENSIONS & WEIGHTS –
HOW TO SIZE/ORDER
inches/pounds
Weight (lbs)
Model* Size
A
AA
B
C
D
E
F
NPT/SW
From the capacity chart, select the model that can
handle the working pressure of the system (PMO).
Select the trap that will meet the capacity requirements at the differential pressure. Example:
FLG
FT600
3/4"
6.10
10.10
2.07
3.93
7.38
8.41
5.75
25
31
FT600
1"
6.50
10.40
2.50
5.50
8.44
9.50
6.25
31
36
FT600
11/2"
9.80
14.00
3.26
6.85
10.40
11.94
7.75
82
91
FT600
2"
11.80
16.00
3.60
7.40
11.59
13.27
8.00
93
107
Application: 1690 lbs/hr at 30 PSIG working
pressure and 5 PSI differential pressure
Size/Model: 1” FT600-65-14 (65 PSIG max),
Specify connections (NPT, SW, FLG)
* Chart is applicable for both Models FT600 & FT601
C A PA C I T I E S –
PMO
Model*/ (PSIG) Sizes
Condensate (lbs/hr)
1
2
3
4
5
6
8
Differential Pressure (PSI)
10
20
30
40
50
65
80
100
145
200
300
400
450
FT600-65-13
3/4”
225
300
363
413
463
500
575
635
960
1060
1180
1320
1460
FT600-65-14
1”
775
1094
1340
1520 1690
1865
2125
2370
3260
3990
4500
5000
5500
FT600-65-16
11/2”
2500
3450
4130
4750 5300
5875
6750
7500 10625 13125 15000 16800 18850
FT600-65-17
2”
8500
11950 14670 16800 18700 20100 23650 25250 35900 43000 49600 55500 61250
FT600-145-13
3/4”
137
180
218
250
275
297
340
380
520
625
725
863
895
995
1120
1315
FT600-145-14
1”
400
555
660
755
850
925
1060
1237
1593
1925
2240
2490
2750
3000
3430
3935
FT600-145-16
11/2”
1275
1750
2125
2430 2740
2930
3370
3750
5100
6250
7200
7995
8875
9900
11250 13300
FT600-145-17
2”
3125
4400
5375
6250 6900
7100
8700
9250 14625 16875 19375 21875 25000 27500 31000 37000
FT600-200-13
3/4”
93
137
160
187
205
227
260
287
400
487
560
610
710
775
875
1060
1250
FT600-200-14
1”
300
410
487
560
610
660
750
925
1140
1375
1520
1687
1875
2060
2312
2750
3100
FT600-300-13
3/4”
50
68
83
95
106
118
137
155
197
240
275
300
340
375
413
490
570
710
FT600-300-14
1”
225
300
363
413
463
500
575
635
960
1060
1180
1320
1468
1640
1815
2130
2550
3000
FT600-450-13
3/4”
32
42
49
56
62
67
76
84
119
145
163
175
192
210
186
275
312
375
425
450
FT600-450-14
1”
137
180
218
250
275
297
340
380
520
625
725
863
895
995
1120
1315
1500
1870
2125
2250
FT600-450-16
11/2”
825
1130
1400
1570 1760
1937
2190
2500
3375
4125
4740
5250
6000
6600
7300
8650
10200 12600 14375 15200
FT600-450-17
2”
1560
2187
2800
3100 3490
3750
4300
4800
6750
8250
9500
10625 12400 13700 15000 18120 21200 26250 28700 31250
Note: For 450 Model, the Thermostatic Air Vent is replaced with a live Orifice.
* Chart is applicable for both Models FT600 & FT601
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
31
STEAM TRAPS
STEAM TRAPS
FT600 & FT601 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float & Thermostatic Steam Trap
FT600 & FT601: 3” & 4”
Lifting
Eyes
16
(2) Jack
Screws
25.8
8.8
FT600 & FT601
3” & 4”
A
NPT & SW
(4) .62 ø
Mounting Holes
AA
Flanged
DIMENSIONS & WEIGHTS –
inches/pounds
Weight (lbs)
Model*
Size
A
AA
NPT/SW
FLG
FT600
3"
27
39
587
626
FT600
4"
N/A
39
N/A
654
* Chart is applicable for both Models FT600 & FT601
C A PA C I T I E S –
Condensate (1000 lbs/hr)
Temp
1/2
1
2
5
10
15
20
30
Differential Pressure (PSI)
40
50
75
100 125
150
175
COLD*
44
59
81
122
170
205
230
280
317
350
425
480
540
580
HOT
44
53
64
83
100
112
121
138
149
159
177
190
201
212
200
250
300
350
400
450
625
670
740
800
860
910
960
222
230
247
260
270
280
290
* Cold Water capacities are to be used when the trap is used as a liquid drain trap.
Note: For liquid drain trap applications, please specify “liquid drain trap” when ordering.
C A PA C I T Y C O R R E C T I O N FA C T O R S
To obtain capacity with a liquid other than water, multiply water capacity by correction factor.
Spec. Gravity
1
.98
.96
.94
.92
.90
.88
.86
.84
.82
.80
.75
.70
.65
.60
.55
.50
Corr. Factor
1
.990
.980
.970
.959
.949
.938
.927
.917
.906
.894
.866
.837
.806
.775
.742
707
PRESSURE-TEMPERATURE RATING - 3” & 4” Models
PMA
TMA
32
650 PSIG up to 450˚F
750˚F @ 375 PSIG
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
FT600 & FT601 Series
Float & Thermostatic Steam Trap
Cover
Gasket
Studded Cover to
Facilitate Disassembly
& Maintenance
Studs remain attached
to cover
Can be Tapped for
Liquid Drainer
Applications
Welded Stainless
Steel Thermostatic
Air Vent
(Optional Live Orifice
for Superheat
Applications)
All Wear
Points are
Heat-treated
Stainless
Steel
Stainless Steel
Float
Internally &
Externally-Welded
for Maximum
Strength
Stainless Steel
Erosion Protection
Shield
Seat Area
Heat-treated and Lapped
for Extended Life
and Tight Shut-off
Investment Cast
Body & Cover
available in Carbon Steel
or 316 SS
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
33
STEAM TRAPS
STEAM TRAPS
FTE & FTES Series
Float & Thermostatic Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
FTE
11/2”, 2”, 21/2”
NPT
Ductile Iron
200 PSIG
450ºF
300 PSIG up to 450ºF
450ºF @ 300 PSIG
FTES
21/2”
NPT, SW, FLG
Cast Steel
300 PSIG
450ºF
300 PSIG up to 750ºF
750ºF @ 300 PSIG
T Y P I C A L A P P L I C AT I O N S
S A M P L E S P E C I F I C AT I O N
PROCESS: The FTE & FTES Series float and thermostatic steam
traps are used in HVAC and on industrial process equipment
with very high load requirements. These high capacity steam
traps are typically used on reboilers, absorption chillers, large
air handling coils, large heat exchangers, and other large
process equipment.
The trap shall be of float and thermostatic design with ductile
iron or cast steel body. The trap must incorporate all stainless
steel internals with hardened seat and welded stainless steel
thermostatic air vent. Trap must be in-line repairable.
HOW IT WORKS
Float and thermostatic steam traps have a float and thermostatic
element that work together to remove both condensate and air
from the steam system. The float, which is attached to a valve,
rises and opens the valve when condensate enters the trap.
Air is discharged through the thermostatic air vent to the outlet
side of the trap. The thermostatic air vent closes when steam
enters the trap.
F E AT U R E S
• Ductile Iron has a higher pressure and temperature rating
and is more resistant to shock loads than Cast Iron.
• Cast Steel Body will allow operating pressures and
temperatures up to 300 PSIG and 450˚F.
• High Capacity steam trap for draining large process
equipment (over 100,000 lbs/hr)
• All stainless steel internals with hardened seat and
wear parts
• In-line repairable is simplified by having all internals
attached to the cover
• Welded stainless steel thermostatic air vent resists shock
from water hammer. Live orifice air vent is available for
superheated applications
• Excellent air handling capability allowing air to be
discharged rapidly and steam to enter the system quickly
during start up
• F & T traps discharge condensate immediately as it is
formed (No condensate will back up into the system)
34
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
I N S TA L L AT I O N
Isolation valves should be installed with trap to facilitate
maintenance. The trap must be level and upright for the float
mechanism to operate. Larger traps should not be supported
by the piping system alone. Trap must be sized and located
properly in the steam system.
MAINTENANCE
All working components can be replaced with the trap body
remaining in-line. Repair kits include thermostatic air vent, float,
valve seat and disc, and gaskets. For full maintenance details
see Installation and Maintenance Manual.
OPTIONS
Live orifice air vent for superheated steam applications.
Parallel-pipe inlet/outlet connections are standard as shown.
An optional In-line inlet/outlet connection is available;
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
FTE & FTES Series
Float & Thermostatic Steam Trap
F
INLET
C
E
OUTLET
A
D
B
DIMENSIONS & WEIGHTS –
Size/Model
inches/pounds
M AT E R I A L S
A
B
C
D
E
F
Weight
Body & Cover (FTE)
Body & Cover (FTES)
Cover Screw
Cover Gasket
Valve Discs
Main Valve Assembly Housing
Valve Assembly Gasket
Ball Float
Thermostatic Vent
2“
FTE-20
12.6
5.7
4.5
0.5
11.1
3.9
54
2“
146
FTE-50
16.0
8.4
7.3
1.4
15.6
3.6
21/2” FTE-50
15.5
8.4
7.3
1.4
15.6
3.6
140
21/2” FTE-125
15.5
8.4
7.3
1.4
15.6
3.6
146
11/2” FTE-200
9.6
4.3
3.0
0.7
8.8
2.6
35
2“
FTE-200
12.6
5.7
4.5
0.5
11.1
3.9
65
21/2” FTE-200
15.5
8.4
7.3
1.4
15.6
3.6
146
21/2” FTES-300 15.5
8.4
7.3
1.4
15.6
3.6
146
Note:
Ductile Iron
Cast Steel, ASTM A-216
Grade 5 Carbon Steel
Grafoil
Stainless Steel, AISI 17-4PH
Stainless Steel, AISI 17-4PH
Garlock
Stainless Steel, AISI 304
Stainless Steel, AISI 300
Optional: Live orifice air vent
21/2”
FTES-50, 125 & 200 have same dimensions and
capacities as FTE-50, 125 & 200.
HOW TO SIZE/ORDER
From the capacity chart, select the model that can handle the working pressure of the system (PMO).
Select the trap that will meet the capacity requirements at the differential pressure. Example:
Application: 2,700 lbs/hr at 150 PSIG working pressure and 1/4 PSI differential pressure
Size/Model: 2” FTE-200, NPT connections
C A PA C I T I E S –
PMO
Model (PSIG)
FTE-20*
20
FTE-50
50
FTE-50
50
Condensate (lbs/hr)
Pipe
Size
Orifice
Size
1/4
1/2
2”
.937”
6100
7800
2”
2.125” 12800 16900 20100 25300 33000 40200 43500 46000 47800 50500 52500
1
2
5
10
15
Differential Pressure (PSI)
20
30
40
50
75
100
125
200
250
300
9300 11800 15900 19500 22500 26000
21/2” 2.125” 20400 25700 31000 37000 46300 55100 60300 65100 72000 77300 82100
FTE-125 125
21/2” 2.125” 20400 25700 31000 37000 46300 55100 60300 65100 72000 77300 82100 90400 97700 105000
FTE-200 200
11/2”
.375”
950
1350
1900
2200
2700
FTE-200 200
2”
.75”
2700
4100
5700
7400
9900 11800 13400 14400 16400 18000 19000 21500 23000 24500 29200
FTE-200 200
21/2”
1.5”
7200 12300 17400 21500 27600 32600 36000 39300 43100 46600 49200 54700 58800 61900 74000
FTES-300 300
21/2”
1.5”
7200 12300 17400 21500 27600 32600 36000 39300 43100 46600 49200 54700 58800 61900 74000 86000 100550
3300
3900
4400
5300
5800
6400
7600
8500
9400
11900
* Single seat orifice. All others are double seated.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
35
STEAM TRAPS
STEAM TRAPS
FTT Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float & Thermostatic Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
FTT
1/2”, 3/4”, 1”, 11/2”, 2”
NPT
Ductile Iron
300 PSIG
Saturated Steam Temperature
300 PSIG up to 450ºF
450ºF @ 300 PSIG
T Y P I C A L A P P L I C AT I O N S
MAINTENANCE
DRIP, PROCESS: The FTT Series float and thermostatic steam
traps are used in drip and process applications, industrial and
HVAC process equipment. The excellent air handling capabilities
of float and thermostatic traps make them a better choice than
bucket traps for applications requiring quick system start-up.
These traps have in-line pipe connections. Used on unit heaters,
textile machines, heat exchangers, and other medium sized
process equipment.
All internal components can be replaced with the trap body
remaining in-line. Repair kits include thermostatic air vent, float,
valve seat and disc, and gaskets. For full maintenance details
see Installation and Maintenance Manual.
HOW IT WORKS
Float and thermostatic steam traps have a float and thermostatic
element that work together to remove both condensate and air
from the steam system. The float, which is attached to a valve,
rises and opens the valve when condensate enters the trap.
Air is discharged through the thermostatic air vent to the outlet
side of the trap. The thermostatic air vent closes when steam
enters the trap.
S A M P L E S P E C I F I C AT I O N
The trap shall be of float and thermostatic design with ductile iron
body and in-line piping configuration. Thermostatic air vent to be
welded stainless steel. All internals must be stainless steel with
hardened seat area. Trap must be in-line repairable.
I N S TA L L AT I O N
OPTIONS
Live orifice air vent for superheated steam applications.
F E AT U R E S
• Ductile Iron has a higher pressure and temperature rating
and is more resistant to shock loads than cast Iron
• All stainless steel internals with hardened seat and
wear parts
• In-line repairability is simplified by having all internals
attached to the cover
• Welded stainless steel thermostatic air vent resists shock
from water hammer. Live orifice air vent is available for
superheated applications
• Excellent air handling capability allowing air to be
discharged rapidly and steam to enter the system quickly
during start-up.
• F & T traps discharge condensate immediately as it
is formed (No condensate will back-up into the system)
The trap must be level and upright for the float mechanism
to operate. Trap must be sized and located properly in the
steam system.
36
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
FTT Series
Float & Thermostatic Steam Trap
FTT 1/2” & 3/4”
FTT 1”
A
D
C
L PIPING
C
C
FLOW
B
E
C
L PIPING
D
B
A
E
FTT 11/2” & 2”
DIMENSIONS & WEIGHTS –
C
B
D
A
inches/pounds
Size
A
B
C
D
E
1/2”, 3/4”
4.8
1.9
3.9
2.5
5.5
Weight
6
1”
4.8
3.1
7.5
1.1
8.8
16
11/2”
10.6
4.3
9.6
1.4
12.0
40
2”
11.9
4.3
9.6
1.4
12.0
40
C
L PIPING
E
M AT E R I A L S
HOW TO SIZE/ORDER
Body & Cover
Gasket
Cover Screws
Float
Internals
Thermostat
Valve Seat
Valve Disc
From the capacity chart, select the model that can handle the working
pressure of the system (PMO). Select the trap that will meet the
capacity requirements at the differential pressure. Example:
Application: 2740 lbs/hr at 100 PSIG working pressure and
5 PSI differential pressure
Size/Model: 11/2” FTT-145 (145 PSIG max), NPT connections
C A PA C I T I E S –
Ductile Iron
Grafoil
Steel, GR5
Stainless Steel, AISI 304
Stainless Steel
Stainless Steel
Stainless Steel, 17-4 PH
Stainless Steel, AISI 420F
Condensate (lbs/hr)
Model
PMO
(PSIG)
Pipe
Size
1/4
1/2
1
2
5
10
15
20
Differential Pressure (PSI)
30
40
50
65
75
FTT-65
65
1/2”, 3/4”
115
155
205
270
390
520
610
685
FTT-65
65
1”
340
500
775 1100 1700 2400 2800 3250 3925 4200 5000 5825
FTT-65
65
11/2”
1150 1650 2500 3450 5300 7500 8180 10600 13100 15000 16800 18900
3470 4820 8500 11950 18700 25200 26900 36000 43000 49600 55500 61300
810
910
100
125
145
725
795
850
200
225
645
680
250
FTT-65
65
2”
FTT-145
145
1/2”, 3/4”
55
75
100
135
200
FTT-145
145
1”
190
275
405
550
840 1200 1380 1600 1850 2200 2450 2750 2920 3400 3700 3900
FTT-145
145
11/2”
685
970 1275 1750 2740 3750 4490 5100 6250 7200 8000 8900 9600 11250 12000 13300
FTT-145
145
2”
FTT-225
225
1/2”, 3/4”
40
50
70
95
135
185
220
FTT-225
225
1”
150
200
300
405
600
820
975 1130 1375 1510 1620 1875 2000 2350 2600 2750 3100 3250
FTT-250
250
11/2”
530
710
825 1130 1760 2500 2950 3375 4125 4740 5250 6000 6400 7300 8000 8650 10200 10800 11300
FTT-250
250
2”
695
985 1560 2185 3490 4800 5800 6750 8250 9500 10650 12400 13300 15000 16600 18120 21200 22300 23200
FTT-300
300
1”
100
155
270
320
365
435
490
300
995 1110
540
600
640
1860 2680 3125 4400 6900 9250 13790 14600 16900 19400 21900 25000 26800 31000 34000 37000
220
300
460
630
750
245
290
330
360
405
430
485
530
565
860 1060 1240 1360 1450 1600 1820 2000 2130 2500 2650 2800 3000
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
37
STEAM TRAPS
STEAM TRAPS
WFT Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float & Thermostatic Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WFT
3/4”, 1”, 11/4”, 11/2”, 2”
NPT
Cast Iron
250 PSIG
Saturated Steam Temperature
250 PSIG up to 450ºF
450ºF @ 250 PSIG
WFT
3/4” & 1”
WFT
2”
T Y P I C A L A P P L I C AT I O N S
PROCESS: The WFT Series float and thermostatic steam traps
are used for HVAC and industrial process applications. The
excellent air handling capabilities of these traps make them a
better choice than bucket traps for applications requiring quick
start-up. Used on unit heaters, textile machines, heat exchangers,
and other process equipment.
HOW IT WORKS
Float and thermostatic steam traps have a float and thermostatic
element that work together to remove both condensate and air
from the steam system. The valve, which is attached to a float,
rises and opens the valve when condensate enters the trap.
Air is discharged through the thermostatic air vent to the outlet
side of the trap. The thermostatic air vent closes when steam
enters the trap.
WFT
11/4” & 11/2”
F E AT U R E S
I N S TA L L AT I O N
• All stainless steel internals with hardened seat and
Isolation valves should be installed with trap to facilitate
maintenance. The trap must be level and upright for the float
mechanism to operate. Trap must be sized and located properly in
the steam system.
wear parts
• In-line repairability is simplified by having all internals
attached to the cover
• Welded stainless steel thermostatic air vent resists shock
from water hammer. Live orifice air vent is available for
superheated applications
• Excellent air handling capability allowing air to be
discharged rapidly and steam to enter the system quickly
during start-up
• F & T traps discharge condensate immediately as it
is formed (no condensate will back-up into the system)
MAINTENANCE
Close isolation valves prior to performing any maintenance.
All internal components can be replaced with the trap body
remaining in-line. Repair kits include thermostatic air vent, float,
valve seat and disc, and gaskets. For full maintenance details
see Installation and Maintenance Manual.
OPTIONS
S A M P L E S P E C I F I C AT I O N
Live orifice air vent for superheated steam applications.
The trap shall be of float and thermostatic design with cast iron
body and in-line piping configuration. Thermostatic air vent to
be welded stainless steel. All internals must be stainless steel with
hardened seat area. Trap must be in-line repairable.
38
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WFT Series
Float & Thermostatic Steam Trap
Dimensions: inches
Dimensions: inches
6.2
4.8
3.1
3.4
1.3
8.2
3.0
5.9
3.3
2.6
0.3
0.7
8.9
2.2
4.2
4.3
S P E C I F I C AT I O N S
S P E C I F I C AT I O N S
Model
Sizes
Connection
PMO
(PSIG)
WFT-15
3/4”, 1”, 11/4”
NPT
15
125
9
WFT-175
WFT-30
11/4”
NPT
30
125
9
WFT-250
3/4”, 1”,
PMA
(PSIG)
Weight
(lbs)
WFT-75
3/4”, 1”
NPT
75
125
9
WFT-125
3/4”, 1”
NPT
125
125
9
Connection
PMO
(PSIG)
PMA
(PSIG)
Weight
(lbs)
3/4”, 1”, 11/4”
NPT
175
250
20
3/4”, 1”, 11/4”
NPT
250
250
20
Model
Sizes
Dimensions: inches
Dimensions: inches
4.8
3.9
8.2
10.9
3.0
4.5
2.6
0.3
8.9
0.7
12.2
0.5
2.2
5.7
4.3
S P E C I F I C AT I O N S
S P E C I F I C AT I O N S
Model
Sizes
Connection
PMO
(PSIG)
PMA
(PSIG)
Weight
(lbs)
Model
Sizes
WFT-15
11/2”
NPT
15
250
21
WFT-15
2”
NPT
15
250
53
WFT-30
11/2”
NPT
30
250
21
WFT-30
2”
NPT
30
250
53
WFT-75
11/4”, 11/2”
NPT
75
250
21
WFT-75
2”
NPT
75
250
53
WFT-125
11/4”, 11/2”
NPT
125
250
21
WFT-125
2”
NPT
125
250
53
WFT-175
11/4”, 11/2”
NPT
175
250
21
WFT-175
2”
NPT
175
250
53
WFT-250
11/4”, 11/2”
NPT
250
250
21
WFT-250
2”
NPT
250
250
53
Connection
PMO
(PSIG)
PMA
(PSIG)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Weight
(lbs)
39
STEAM TRAPS
STEAM TRAPS
WFT Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float & Thermostatic Steam Trap
HOW TO SIZE/ORDER
M AT E R I A L S
Body & Cover
Gasket
Cover Screws
Float
Internals
Thermostat
Valve Seat
Valve Disc
Cast Iron
Grafoil
Steel, GR5
Stainless Steel,
Stainless Steel,
Stainless Steel
Stainless Steel,
Stainless Steel,
C A PA C I T I E S –
40
Application: 1,910 lbs/hr at 30 PSIG working pressure and
1/2 PSI differential pressure
AISI 304
300 Series
Size/Model: 2” WFT-030-17, 0.500” Orifice, NPT connections
17-4 PH
AISI 420F
Condensate (lbs/hr)
PMO Pipe Orifice
(PSIG) Size Size 1/4
Model
From the capacity chart, select the model that can handle the
working pressure of the system (PMO). Select the trap that will meet
the capacity requirements at the differential pressure. Example:
3/4” 0.250 390
1/2
1
490
620
2
5
10
15
Differential Pressure (PSI)
20
30
40
50
75
100
125
150
175
WFT-015-13
15
WFT-015-14
15
0.250 390
490
620
780 1050 1320 1500
WFT-015-15
15
11/4” 0.312 610
770
960
1210 1630 2040 2330
WFT-015-16
15
11/2” 0.500 1420 1910 2570 3460 5120 6890 8190
WFT-015-17
15
WFT-030-13
30
WFT-030-14
30
WFT-030-15
30
WFT-030-16
30
WFT-030-17
30
WFT-075-13
75
WFT-075-14
75
WFT-075-15
75
11/4” 0.312 640
850 1130 1500 2180 2900 3420 3850 4540 5110 5600 6610
WFT-075-16
75
11/2” 0.312 640
850 1130 1500 2180 2900 3420 3850 4540 5110 5600 6610
WFT-075-17
75
WFT-125-13
125
WFT-125-14
125
0.128 105
135
WFT-125-15
125
11/4” 0.250 410
540
WFT-125-16
125
11/2” 0.250 410
540
710
930 1340 1770 2070 2320 2730 3050 3340 3920 4390 4790
WFT-125-17
125
WFT-175-13
175
WFT-175-14
175
WFT-175-15
175
11/4” 0.250 410
540
710
930 1340 1770 2070 2320 2730 3050 3340 3920 4390 4790 5150 5470
WFT-175-16
175
11/2” 0.250 410
540
710
930 1340 1770 2070 2320 2730 3050 3340 3920 4390 4790 5150 5470
WFT-175-17
175
WFT-250-13
250
WFT-250-14
250
WFT-250-15
1”
2”
420
530
670
930
1180 1350 1500 1720
420
530
670
930
1180 1350 1500 1720
11/4” 0.228 330
420
530
670
930
1180 1350 1500 1720
11/2” 0.390 930
1240 1650 2190 3210 4280 5060 5700 6750
2”
0.228 330
2”
0.166 175
2”
0.332 720
3/4” 0.166 190
1”
2”
225
295
385
545
705
825
920
1075 1200 1305 1525
225
295
385
545
705
825
920
1075 1200 1305 1525
0.422 1020 1340 1760 2310 3330 4380 5140 5760 6770 7590 8290 9730
3/4” 0.128 105
1”
250
0.500 1420 1910 2570 3460 5120 6890 8190 9260 11020
3/4” 0.166 175
1”
225
0.625 2260 2950 3860 5040 7170 9360 10930
3/4” 0.228 330
1”
200
780 1050 1320 1500
0.166 190
135
180
235
340
445
525
585
690
770
845
990
1110 1210
180
235
340
445
525
585
690
770
845
990
1110 1210
710
930 1340 1770 2070 2320 2730 3050 3340 3920 4390 4790
960 1270 1690 2460 3270 3860 4340 5130 5770 6320 7460 8390 9190
250
320
420
590
770
900 1010 1180 1310 1430 1670 1870 2030 2180 2310
250
320
420
590
770
900 1010 1180 1310 1430 1670 1870 2030 2180 2310
0.281 520
680
900
1180 1700 2230 2620 2930 3440 3860 4210 4950 5540 6050 6510 6920
3/4” 0.128 115
145
190
245
345
450
520
580
675
755
820
955
1060 1155 1235 1310 1375 1440 1495
0.128 115
145
190
245
345
450
520
580
675
755
820
955
1060 1155 1235 1310 1375 1440 1495
250
11/4” 0.203 270
350
450
590
820
1070 1240 1380 1600 1780 1940 2250 2500 2720 2910 3080 3240 3380 3520
WFT-250-16
250
11/2” 0.203 270
350
450
590
820
1070 1240 1380 1600 1780 1940 2250 2500 2720 2910 3080 3240 3380 3520
WFT-250-17
250
540
710
930 1340 1760 2060 2310 2710 3040 3320 3890 4360 4760 5110 5430 5730 6000 6250
1”
2”
0.250 410
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WSIB/WSIBH
Inverted Bucket Steam Trap
Units: inches
Model
Size
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WSIB, WSIBH
1/2”, 3/4”
NPT, SW
Stainless Steel
450 PSIG*
750ºF
720 PSIG @ 100ºF
750ºF @ 400 PSIG
4.55
WSIB
6.56
WSIBH
7.81
*750ºF @ operating pressures below 400 PSIG. See installation note regarding using trap in
superheated applications.
WSIB
5.81
WSIBH
T Y P I C A L A P P L I C AT I O N S
6.56
DRIP, TRACER: The WSIB inverted bucket trap is primarily used
in drip and tracer applications. Inverted bucket traps can handle
superheated steam when a check valve is used. These traps are
also used on unit heaters, laundry equipment, and other small
process equipment where slow start-up due to poor air handling
capability can be tolerated.
WSIB
Inverted Bucket
Steam Trap
3.0
FLOW
HOW IT WORKS
When there is condensate in the system, the inverted bucket
inside the steam trap sits on the bottom of the trap due to its
inherent weight. This allows condensate to enter the trap and to
be discharged through the seat orifice located at the top. When
steam enters the trap, the bucket floats to the surface and closes
off the discharge valve containing the steam in the system.
Eventually steam is bled off through a small hole in the top
of the bucket causing the bucket to sink which repeats the cycle.
F E AT U R E S
• All stainless steel body
• Acceptable for superheated steam
S A M P L E S P E C I F I C AT I O N
Steam trap shall be an all stainless steel module design inverted
bucket type with a frictionless valve lever assembly.
I N S TA L L AT I O N & M A I N T E N A N C E
Trap must be installed in upright position to function properly.
Steam trap is non-repairable. If a new trap is required, remove and
replace. With superheated steam, a check valve must be installed at
inlet of trap. For full maintenance details, see Installation and
Maintenance Manual.
M AT E R I A L S
(with check valve installed at inlet)
• Water hammer resistant
• Valve & seat are at the top of the trap making it less
sensitive to dirt
• All stainless steel internals with hardened valve & seat
Body
Cover
Internals
Valve Plug & Seat
Stainless Steel GR CF3
304L Stainless Steel
300 Series Stainless Steel
420F Stainless Steel
C A PA C I T I E S – Condensate (lbs/hr)
Model
Orifice PMO
Size (PSIG)
5
10
15
20
25
30
40
Differential Pressure (PSI)
50
60
70
80 100
125
150
180
200
250
350
450
228
248
263
248
263
WSIB-20
3/16”
20
450
560
640
690
WSIB-80
1/8”
80
300
350
400
440
460
500
550
580
635
660
WSIB-150
#38
150
210
250
280
300
320
350
380
400
420
450
470
500
550
570
WSIB-450
.057
450
31
50
70
84
95
105
120
133
145
152
160
174
187
198
208
215
WSIBH-15
1/4”
15
830
950 1060
WSIBH-30
3/16”
30
530
700
820
880
950 1000
WSIBH-70
5/32”
70
380
500
560
620
680
710
770
840
90
950
WSIBH-125
1/8”
125
285
375
440
485
530
560
620
670
720
780
800
860
950
WSIBH-200
7/64”
200
205
265
315
350
385
410
465
500
580
590
620
650
700
810
840
860
WSIBH-250
#38
250
155
205
240
270
295
320
360
400
500
530
550
580
630
660
690
710
760
WSIBH-450
.057
450
31
50
70
84
95
105
120
133
145
152
160
174
187
198
208
215
228
690
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
41
STEAM TRAPS
STEAM TRAPS
IB Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Inverted Bucket Steam Traps
Model
Sizes
Connections
Body Material
Options
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
1031, 1032, 1033,
1034, 1031S, 1041,
1042, 1044, 1038S
1/2”, 3/4”, 1”, 11/4”, 11/2”
NPT
Cast Iron
Internal check valve, air vent
250 PSIG
450ºF
250 PSIG up to 450ºF
450ºF @ 250 PSIG
T Y P I C A L A P P L I C AT I O N S
DRIP, TRACER, PROCESS: The IB Series inverted bucket traps
are available in several sizes and capacity ranges. Inverted
bucket traps can handle superheated steam when a check valve
is used. The smaller traps are primarily used in drip and tracer
applications. These traps are also used on unit heaters, laundry
equipment, and other process equipment where slow start-up due
to poor air handling capability can be tolerated. Larger sizes are
used on process equipment; however, since bucket traps have
limited air handling capability, F&T traps are the preferred choice.
1031/1032/1033/1034
(No Strainer)
1031S
(with Strainer)
1041/1042/1044/1038S
(with Strainer)
HOW IT WORKS
When there is condensate in the system, the inverted bucket
inside the steam trap sits on the bottom of the trap due to its
inherent weight. This allows condensate to enter the trap and to
be discharged through the seat orifice located at the top. When
steam enters the trap, the bucket floats to the surface and closes
off the discharge valve containing the steam in the system.
Eventually steam is bled off through a small hole in the top of
the bucket causing the bucket to sink which repeats the cycle.
F E AT U R E S
• Water hammer resistant
• Suitable for superheated steam
(use internal check valve option to eliminate loss of prime)
• In-line repairability is simplified by having all internals
attached to the cover
• Valve & seat are at the top of the trap making it less
sensitive to dirt
• All stainless steel internals with hardened valve & seat
S A M P L E S P E C I F I C AT I O N
The steam trap shall be of an inverted bucket trap design.
Trap body and cover shall be of cast iron construction with
all stainless steel internals and hardened seat and disc.
MAINTENANCE
All working components can be replaced with the trap body
remaining in-line. The repair kit for the traps contain a lever
and seat assembly with gasket. With superheated steam, a check
valve must be installed at inlet of trap. For full maintenance
details see Installation and Maintenance Manual.
42
DIRECT REPLACEMENT FOR THE
FOLLOWING ARMSTRONG MODELS
Watson Model
Armstrong Model
(Without Integral Strainer)
1031
800
1032
811
1033
812
1034
813
(Includes Integral Strainer)
1031S/1038S
N/A
1041
880
1042
881
1044
883
OPTIONS
Blowdown valve connection available on 1041, 1042, 1044 &
1038S. Thermic vent to improve air handling capability. Internal
check valve for superheated or condensate backflow applications.
HOW TO SIZE/ORDER
From the capacity chart, select the model that can handle the working
pressure of the system (PMO). Select the appropriate trap that will meet
the capacity requirements at the differential pressure. Example:
Application: 1000 lbs/hr at 75 PSIG working pressure and
2 PSI differential pressure
Note: Specify Model, PMO and Connection Size
Size/Model: IB-1034, 80 PSIG, Specify pipe size (3/4”, 1”), or
IB-1044, 80 PSIG, Specify pipe size (3/4”, 1”)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
IB Series
Inverted Bucket Steam Traps
C A PA C I T I E S –
Model
1031
1041
1031S *
1032
1042
Pipe
Size
Condensate (lbs/hr)
Orifice PMO
Size (PSIG)
1/4
1/2
1
2
5
10
15
Differential Pressure (PSI)
20
30
50
60
70
80
100
125
1/2”, 3/4”
3/16”
20
139
200
270
340
450
560
640
690
1/2”, 3/4”
1/8”
80
75
115
150
190
300
350
400
440
500
580
635
660
690
1/2”, 3/4”
7/64”
125
50
80
100
145
240
280
320
350
410
490
520
560
580
640
680
300
350
400
420
450
470
500
550
150 180
200
1/2”, 3/4”
#38
150
35
50
75
105
150
250
280
1/2”, 3/4”,1”
1/4”
15
191
300
450
590
830
950
1060
1/2”, 3/4”,1”
3/16”
30
150
235
325
410
530
700
820
880
1000
1/2”, 3/4”,1”
5/32”
70
85
145
220
275
380
500
560
620
710
840
900
950
1/2”, 3/4”,1”
1/8”
125
70
110
160
210
285
375
440
485
560
670
720
780
800
860
950
1/2”, 3/4”,1”
7/64”
200
45
75
110
145
205
265
315
350
410
500
550
580
620
650
700
810
840
860
1/2”, 3/4”,1”
#38
250
15
40
80
105
155
205
240
270
320
400
500
530
550
580
630
660
690
710
1/2”, 3/4”
1/4”
15
191
300
450
590
830
950
1060
1/2”, 3/4”
3/16”
30
150
235
325
410
530
700
820
880
1000
1/2”, 3/4”
5/32”
70
85
145
220
275
380
500
560
620
710
840
900
950
1/2”, 3/4”
1/8”
125
70
110
160
210
285
375
440
485
560
670
720
780
800
860
950
1/2”, 3/4”
7/64”
200
45
75
110
145
205
265
315
350
410
500
550
580
620
650
700
810
840
860
1/2”, 3/4”
#38
250
15
40
80
105
155
205
240
270
320
400
500
530
550
580
630
660
690
710
1/2”, 3/4”
5/16”
15
350
570
850
1140 1600 1900 2100
1/2”, 3/4”
1/4”
30
270
400
640
810
570
1/2”, 3/4”
3/16”
70
195
300
480
610
750
950
1200 1375 1600 1900 2000 2200
5/32”
125
130
205
320
415
595
775
910
900
1100 1380 1480 1600 1650 1800 2000
1/2”, 3/4”
1/8”
200
75
120
200
255
365
490
585
630
700
900
980
1080 1120 1220 1400 1500 1560 1600
1/2”, 3/4”
7/64”
250
30
80
130
170
250
335
400
470
525
665
600
700
3/4”, 1”
1/2”
15
950 1410 1880 2300 2900 3500 3900
3/4”, 1”
3/8”
30
600
960
1300 1640 2200 2800 3300 3500 4000
1034
3/4”, 1”
5/16”
60
490
800
1090 1400 1750 2200 2600 2900 3500 4100 4400
1044
3/4”, 1”
9/32”
80
330
580
720
1070 1450 1800 2100 2400 2800 3300 3600 3800 4000
3/4”, 1”
1/4”
125
260
430
620
810
1038S
760
760
1000 1300 1600 1800 2050
1/2”, 3/4”
1033
250
800
900
1000 1100 1180 1220 1300
1150 1650 1800 1900 2200 2600 2800 3000 3200 3600 3900
3/4”, 1”
7/32”
180
200
310
470
610
880
1170 1380 1510 1800 2100 2300 2500 2700 2900 3200 3500 3700
3/4”, 1”
3/16”
250
170
250
380
490
700
940
11/4”, 11/2”
1/2”
15
1188 1763 2350 2875 3625 4375 4875
11/4”, 11/2”
3/8”
30
760 1190 1625 2050 2750 3500 4125 4375 5125
11/4”, 11/2”
5/16”
60
615 1000 1375 1750 2188 2750 3250 3625 4375 5125 5500
11/4”, 11/2”
9/32”
80
420
720
900
1340 1810 2250 2625 3000 3500 4125 4500 4750 5000
11/4”, 11/2”
1/4”
125
330
540
775
1010 1440 2063 2250 2375 2750 3250 3500 3750 4000 4500 4875
11/4”, 11/2”
7/32”
180
250
390
590
760
1100 1470 1725 1890 2063 2375 2875 3125 3375 3625 4000 4375 4625
11/4”, 11/2”
3/16”
250
210
320
470
610
875
1100 1250 1450 1700 1800 2000 2100 2300 2700 2800 3100 3200 3500
1170 1380 1560 1800 2125 2250 2500 2625 2875 3375 3500 3875 4000 4375
* 1031S only available @ PMO = 125 PSIG.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
43
STEAM TRAPS
STEAM TRAPS
IB Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Inverted Bucket Steam Traps
M AT E R I A L S
Body & Cover
Nuts & Bolts
Gasket
Bucket
Lever & Seat Assembly
Valve & Seat
Integral Strainer*
Cast Iron, ASTM A-278 Class 30
High-Tensile Steel
Non-Asbestos Fiber
Stainless Steel
Stainless Steel
Hardened Stainless Steel
Stainless Steel
* 1031S, 1038S, 1041, 1042, 1044 models only.
C
C
A
A
B
FLOW
FLOW
B
D
D
1041/1042/1044/1038S
with Strainer
1031/1031S/1032/1033/1034
without Strainer (except 1031S)
DIMENSIONS & WEIGHTS –
B
inches/pounds
C
D
Weight
(lbs)
Model
A
1031
3.75
5.875
5.00
2.75
5
1031S*
3.75
5.875
5.00
2.75
5
1032
3.75
6.875
5.00
4.25
6
1033
5.625
9.06
6.50
5.375
15
1034
7.00
11.75
7.75
7.03
27
1041*
3.75
6.06
5.00
3.43
5
1042*
3.75
7.06
5.00
4.43
6
1044*
7.00
12.375
7.125
7.375
30
1038S*
7.00
12.375
7.125
7.375
30
* With Integral Strainer
44
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
IB Series
Inverted Bucket Steam Traps
FLOW
FLOW
OPTIONAL
BLOWDOWN
CONNECTION
OPTIONAL
INTERNAL
CHECK VALVE
C H E C K VA LV E O P T I O N
BLOWDOWN CONNECTION OPTION
The optional internal check valve allows the bucket trap to
retain its prime even when exposed to superheated steam.
Under vacuum conditions it will also stop condensate from
back-flowing from the condensate return line into the steam
system.
A blowdown valve connection is available as an
option on the 1041, 1042, 1044, and 1038S models.
This simplifies maintenance by allowing the strainer
to be cleaned without removal. User to supply
blowdown valve.
REPLACEMENT KITS
A replacement kit containing the lever and seat assembly
is a more economical option than replacing the entire
steam trap. Also available are replacement screens,
gaskets and buckets.
When ordering replacement lever and seat assemblies
specify model and operating pressure. Reference price
sheet for exact cross-reference to Armstrong PCA
(Pressure Change Assembly) Kits.
FLOW
STRAINER
SCREEN
1031S
The 1031S is equipped with a small protection screen
to guard against dirt in the steam system. It is a more
economical alternative than the 1041 which has a
full-port strainer. Specifically designed for use in
laundries. Available in 125 PSIG rating only.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
45
STEAM TRAPS
QUICK-CHANGE TRAPS
Universal Style Steam Traps
(Universal Style Connectors and Universal Trap Modules)
Universal Style Steam Traps feature a permanent installation of the
Universal Connector with a 2-bolt mounting arrangement for the Universal Steam
Trap Module, allowing the Steam Trap to be removed and replaced in minutes
without having to unthread piping
by removing only 2-bolts with a socket or open-end wrench
7 different connectors • 6 different trap modules
Thermodynamic • Thermostatic • Inverted Bucket • Bi-Metallic • Float & Thermostatic
Any Universal Connector will work with
any Universal Steam Trap Module
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WU450
1/2”, 3/4”, 1”
NPT, SW, FLG
Stainless Steel
(trap module dependent)
(trap module dependent)
750 PSIG @ 100ºF
800ºF @ 400 PSIG
Universal Style Steam Traps
are recommended in
any application,
– particularly those which
require simple and frequent
replacement
of steam traps
see following
page for
connector
variations.
Select a Trap Module
for your application
WD450
WD450L
Thermodynamic
“Top Mount”
46
WD450SM
WD600LSM
WD600LSM-HP
Thermodynamic
“Side Mount”
WT450
Thermostatic
WB450
Bi-Metallic
WSIB450
WSIB450H
Inverted Bucket
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
WFT450
Float &
Thermostatic
Universal Style Steam Traps
(Universal Style Connectors and Universal Trap Modules)
It all adds up.... a Universal Style Connector + a Universal Trap Module
= the most convenient, time-efficient & cost effective solution
to maintaining your steam traps.
STEP 1: Select an appropriate
Universal STEAM TRAP
MODULE (shown below) for your
application. Consult following
pages for Steam Trap details.
UNIVERSAL TRAP MODULES
WD450
WD450L
Thermodynamic
“Top Mount”
Only recommended for
Horizontal Piping
Installations
WD450SM
WD450LSM
WD600LSM-HP
Thermodynamic
“Side Mount”
STEP 2: Select appropriate
Universal CONNECTOR. Any connector shown below will work with
any Universal Steam Trap Module
STEP 3: Order
configured Universal
Style Steam Traps.
(including those of other manufacturers ).
UNIVERSAL CONNECTORS
F E AT U R E S
WU450
No Strainer
WU450S
Strainer
WU450SB
Strainer &
Blowdown
• 2-bolt mounting allows Trap
Module to be removed
and replaced without having
to unthread piping
• Trap module can swivel 360º
on the universal connector
allowing proper orientation
• Compatible with other
manufacturers trap modules
• All stainless steel construction
• Flange connections available
for connector
WT450
Thermostatic
WU450S-LR
Strainer
WB450
Bi-Metallic
WU450SB-LR
Strainer &
Blowdown
Models WU450-LR
(left to right flow as viewed)
are Standard.
Models WU450-RL
(right to left flow as viewed)
WSIB450
WSIB450H
Inverted Bucket
WU450S-RL
WFT450
Float &
Thermostatic
WU450SB-RL
Strainer
Connectors were made
available for situations
where problems occur
due to obstructions or
trap mounting orientation.
Strainer &
Blowdown
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
47
STEAM TRAPS
QUICK-CHANGE TRAPS
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
Universal Style Steam Traps
(Universal Style Connectors and Universal Trap Modules)
Universal Connectors are used in steam systems to simplify the replacement and maintenance of Steam Traps.
Universal
Connector
allows Steam
Trap to Rotate
360˚Simplifying
Installation
Universal Connector
remains permanently
installed
Replaceable
Steam Trap
Module
INLET
STEAM
PIPE
CONDENSATE
RETURN PIPE
Simple 2-bolt
removal for quick
replacement of
steam trap modules
Universal Connectors allow Steam Traps to be removed and replaced in minutes
without having to unthread piping.
Two bolts connect the steam trap module to the permanently-installed universal connector, allowing the trap module
to be quickly and easily removed and replaced using an open-end or socket wrench. Universal Style Steam Traps
are commonly used in chemical plants, petrochemical refineries, paper mills and most other industrial facilities.
Watson McDaniel’s WU450 connectors conform to industrial standards, making them compatible with other
manufacturers’ universal steam trap modules.
Watson McDaniel recommends using the Universal Style Steam Traps in any application, in particular those
which require frequent maintenance or replacement of steam traps.
• Universal style steam traps with 2-bolt mounting allows for fast, easy replacement of trap module,
making it more cost-effective than replacing conventional type steam traps
• All stainless steel construction
• Trap module can swivel 360º on the universal connector allowing any orientation during installation
• These universal connectors are compatible with most other manufacturer’s trap modules
• Universal connectors are available with integral strainer and blowdown valve
48
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
WU450 Series
Universal Connectors for Universal Steam Trap Modules
Model
WU450, WU450S, WU450SB
WU450S-LR, WU450SB-LR, WU450S-RL, WU450SB-RL
Sizes
1/2”, 3/4”, 1”
Connections
NPT, SW, FLG
Body Material
Stainless Steel
PMO Max. Operating Pressure
(trap module dependent)
TMO Max. Operating Temperature
(trap module dependent)
PMA Max. Allowable Pressure
750 PSIG @ 100ºF
800ºF @ 400 PSIG
TMA Max. Allowable Temperature
WU450
no strainer
WU450S
with strainer
WU450SB
with strainer &
blowdown valve
Steam Trap Modules that mount to Universal Connectors are shown
on the following pages. Trap modules available in: Inverted Bucket,
Float & Thermostatic, Thermodynamic, Thermostatic and Bi-metallic type.
T Y P I C A L A P P L I C AT I O N S
DRIP, TRACER: The WU450 Series Universal Connectors are
used in steam systems where a simplified and economical
maintenance program of steam traps is desired. These universal
connectors can be used for drip service on steam mains and
steam supply lines, tracing, or small process equipment.
Industrial standard 2-bolt universal connectors are commonly
used in chemical plants, petrochemical refineries, paper mills
and other industrial facilities. The WU450 connectors conform
to industrial standards, making them compatible with other
manufacturers’ universal steam trap modules.
Used with the following Watson McDaniel Steam Trap Modules:
WSIB450
- Inverted Bucket
WD450
- Thermodynamic
WD450SM - Thermodynamic
WD600LSM - Thermodynamic
WT450
- Thermostatic
WFT450
- Float & Thermostatic
WB450
- Bi-Metallic
WU450S-LR
with strainer
WU450S-RL
with strainer
(Flow direction
Left to Right)
(Flow direction
Right to Left)
WU450SB-LR
WU450SB-RL
with strainer &
blowdown valve
with strainer &
blowdown valve
(Flow direction
Left to Right)
(Flow direction
Right to Left)
Note: Optional Flanged units available.
HOW IT WORKS
WU450 universal connectors remain permanently installed
in the piping system. The convenient 2-bolt mounting system
allows the trap module to be replaced quickly and easily using
a socket or open-end wrench.
I N S TA L L AT I O N
F E AT U R E S
MAINTENANCE
• Universal connector with 2-bolt mounting allows for fast,
The strainer should be periodically cleaned by removal or use of
the optional blowdown valve. For full maintenance details see
Installation and Maintenance Manual.
easy replacement of trap module making it more costeffective than replacing conventional type steam traps
• All stainless steel construction
• Trap module can rotate 360º on the universal connector
allowing any orientation during installation
• Compatible with most other manufacturers’ trap modules
• Available with integral strainer and blowdown valve
S A M P L E S P E C I F I C AT I O N
The Universal Connector shall be all stainless steel construction
with a two-bolt 360 degree swivel mount flange design and
available with integral strainer and blowdown valve.
The universal connector can be installed in any position.
Installation should include isolation valves.
M AT E R I A L S
Body
Strainer
Blowdown Valve
Stainless Steel, AISI 316
40 Mesh Stainless Steel, AISI 304
Stainless Steel, AISI 303
HOW TO SIZE/ORDER
Specify universal connector. See following pages for
Steam Trap Modules.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
49
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
WU450 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Universal Connectors - Dimensions
WU450, WU450S, WU450SB, Universal Connectors
Connectors available in 1/2”, 3/4” and 1” sizes in NPT or Socket-Weld Connections
3.31 (1/2”, 3/4”)
6.06 (1”)
2.92 (1/2”, 3/4”)
5.66 (1”)
.29
.84
3.31 (1/2”, 3/4”)
6.06 (1”)
Note: Optional
Flange units
available.
.81
.84
.84
2.75
3.38
A
B
WU450
WU450S
WU450SB
(No Strainer)
(Strainer)
(Strainer & Blowdown)
DIMENSIONS – inches
50
Size
A
B
1/2”
1.50
1.97
3/4”
1.50
1.97
1”
1.75
3.35
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
WU450 Series
Universal Connectors - Dimensions
WU450S-LR & WU450SB-LR Universal Connectors
Connectors available in 1/2”, 3/4” and 1” sizes in NPT or Socket-Weld Connections
Note: Optional
Flange units
available.
Flow Direction - LEFT TO RIGHT
NPT or
SOCKET
WELD
3.31 (1/2”, 3/4”)
3.62(1”)
3.31 (1/2”, 3/4”)
3.62(1”)
1.00
3.4
3.9
WU450S-LR
(Strainer)
WU450SB-LR
(Strainer & Blowdown)
WU450S-RL & WU450SB-RL Universal Connectors
Connectors available in 1/2”, 3/4” and 1” sizes in NPT or Socket-Weld Connections
Note: Optional
Flange units
available.
Flow Direction - RIGHT TO LEFT
3.31 (1/2”, 3/4”)
3.62(1”)
1.00
NPT or
SOCKET
WELD
3.31 (1/2”, 3/4”)
3.62(1”)
3.4
3.9
WU450SB-RL
(Strainer & Blowdown)
WU450S-RL
(Strainer)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
51
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
WSIB450
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010
©2002 Watson McDaniel Company
Inverted Bucket Steam Trap Module (mounts to Universal Connectors)
Model
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WSIB450, WSIB450H
Fits WU450 Series universal connectors
Stainless Steel
450 PSIG*
800ºF
720 PSIG @ 100ºF
800ºF @ 400 PSIG
WSIB450
Inverted Bucket
Steam Trap
Module
*750ºF @ operating pressures below 400 PSIG. See installation note regarding using trap in
superheated applications.
Steam trap modules can be used with other manufacturers’
Universal Connectors.
OPTIONS
T Y P I C A L A P P L I C AT I O N S
Universal Connectors are available with an integral strainer
and blowdown valve. Connector is purchased separately.
See the WU450 Universal Connectors section for more information.
DRIP, TRACER: The WSIB450 inverted bucket steam trap
module, mounted to a universal connector, is typically used for
drip and tracing applications. Also used on process equipment
with light loads and where air removal is not critical. The
WSIB450 trap module mounts to any universal connector.
F E AT U R E S
• Trap module can be easily removed and replaced in
minutes without having to disconnect any piping
HOW IT WORKS
The universal connector is permanently installed into the pipeline
where the steam trap would normally be placed. The trap module
is bolted to the universal connector with two bolts and sealed
with a gasket. When a new trap module is needed, it can be
easily removed and replaced with a standard open-end or
socket wrench without disturbing the existing piping.
S A M P L E S P E C I F I C AT I O N
The steam trap shall be an all stainless steel modular design, inverted
bucket type with a frictionless valve lever assembly. The trap shall have
a 360 degree swivel mount on a stainless steel Universal Connector that
is available with integral strainer and blowdown valve options.
• Hardened stainless steel valves and seat
• Freeze resistant
• Connectors available with integral strainers and blowdown valves
• 360º swivel design for convenient installation
M AT E R I A L S
Body
Cover
Internals
Valve Plug & Seat
Bolts
Gasket
I N S TA L L AT I O N & M A I N T E N A N C E
Trap module must be installed in orientation shown.
Installation should include isolation valves. With superheated
steam, a check valve must be installed at inlet of trap. For full
maintenance details, see Installation and Maintenance Manual.
Stainless Steel GR CF3
304L Stainless Steel
300 Series Stainless Steel
420F Stainless Steel
ASTM A193 GR B7
Spiral-Wound 304 Stainless Steel with
Grafoil Filler
303 Stainless Steel
Swivel Flange
C A PA C I T I E S – Condensate (lbs/hr)
Model
WSIB450-20
Orifice PMO
Size (PSIG) 5
3/16” 20 450
10
560
15
640
20
690
25
30
40
50
Differential Pressure (PSI)
60
70
80 100 125
150
180
200
250
350
450
208
215
228
248
263
248
263
WSIB450-80
1/8”
80
300
350
400
440
460
500
550
580
635
660
WSIB450-150
#38
150
210
250
280
300
320
350
380
400
420
450
470
500
550
570
WSIB450-450
.057
450
31
50
70
84
95
105
120
133
145
152
160
174
187
198
WSIB450H-15
1/4”
15
830
950 1060
WSIB450H-30
3/16”
30
530
700
820
880
950 1000
WSIB450H-70
5/32”
70
380
500
560
620
680
710
770
840
900
950
WSIB450H-125
1/8”
125
285
375
440
485
530
560
620
670
720
780
800
860
950
WSIB450H-200
7/64” 200
205
265
315
350
385
410
465
500
580
590
620
650
700
810
840
860
WSIB450H-250
#38
250
155
205
240
270
295
320
360
400
500
530
550
580
630
660
690
710
760
WSIB450H-450
.057
450
31
50
70
84
95
105
120
133
145
152
160
174
187
198
208
215
228
52
690
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
WFT450
Float & Thermostatic Steam Trap Module (mounts to Universal Connectors)
Model
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WFT450
Fits WU450 Series universal connectors
Stainless Steel
225 PSIG
397ºF
720 PSIG @ 100ºF
800ºF @ 400 PSIG
Steam trap modules can be used with other manufacturers’
Universal Connectors.
WFT450
Float & Thermostatic
Steam Trap Module
T Y P I C A L A P P L I C AT I O N S
OPTIONS
PROCESS, DRIP: The WFT450 Float & Thermostatic trap module
mounted to a universal connector, is typically used on process
equipment that generate light condensate loads and require excellent
air handling capabilities. These low capacity float & thermostatic
trap modules can also be used in drip service on steam mains,
tracer systems and steam supply lines. The WFT450 trap module
mounts to any universal connector.
Universal Connectors are available with an integral strainer
and blowdown valve. Connector is purchased separately.
See the Universal Connectors section for more information.
HOW IT WORKS
• Hardened stainless steel valves and seat
• Freeze resistant
• Connectors available with integral strainers and blowdown valves
• 360º swivel design for convenient installation
F E AT U R E S
• Trap module can be easily removed and replaced in
minutes without having to disconnect any piping
The universal connector is permanently installed into the pipeline
where the steam trap would normally be placed. The trap module
is bolted to the universal connector with two bolts and sealed
with a gasket. When a new trap module is needed, it can be
easily removed and replaced with a standard open-end or socket
wrench without disturbing the existing piping.
S A M P L E S P E C I F I C AT I O N
M AT E R I A L S
The steam trap shall be an all stainless steel modular design,
float & thermostatic unit. The thermostatic air vent to be pressure
balanced welded bellows. The trap shall have a 360 degree swivel
mount on a stainless steel Universal Connector that is available with
integral strainer and blowdown valve options.
Body
Cover
Internals
Valve Disc
Valve Seat
Bolts
Gasket
I N S TA L L AT I O N & M A I N T E N A N C E
Trap module must be installed in orientation shown. Installation
should include isolation valves. For full maintenance details,
see Installation and Maintenance Manual.
Stainless Steel GR CF3
304L Stainless Steel
300 Series Stainless Steel
420F Stainless Steel
17-4 PH Stainless Steel
ASTM A193 GR B7
Spiral-Wound 304 Stainless Steel with
Grafoil Filler
303 Stainless Steel
Swivel Flange
C A PA C I T I E S –
Condensate (lbs/hr)
Differential Pressure (PSI)
20
30
40
50
PMO
(PSIG)
1/4
1/2
1
15
390
490
620
WFT450-65
65
115
155
205
270
390
520
610
685
810
910
995 1110
WFT450-145
145
55
75
100
135
200
270
320
365
435
490
540
WFT450-225
225
40
50
70
95
135
185
220
245
290
330
360
Model
WFT450-15
2
5
10
15
65
75
100
125
145
600
640
725
795
850
405
430
485
530
565
200
225
645
680
780 1050 1320 1500
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
53
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
WD450
&
WD450SM
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermodynamic Steam Trap Module (mounts to Universal Connectors)
Model
WD450SM, WD450LSM (Side Mount Style)
WD450, WD450L (Top Mount Style)
Fits WU450 Series
Universal Connectors
Connections
Body Material
PMO Max. Operating Pressure
Stainless Steel
450 PSIG
TMO Max. Operating Temperature
750ºF
PMA Max. Allowable Pressure
720 PSIG @ 100ºF
TMA Max. Allowable Temperature
800ºF @ 400 PSIG
WD450SM
WD450
Thermodynamic
Steam Trap Module
(Side Mount Style)
Thermodynamic
Steam Trap Module
(Top Mount Style)
Recommended for horizontal
piping installations only
so that cap can be
oriented upwards as shown.
For vertical or horizontal
piping installations.
Steam trap modules can be used with other manufacturers’
Universal Connectors.
T Y P I C A L A P P L I C AT I O N S
I N S TA L L AT I O N
DRIP, TRACER: The WD450SM & WD450 steam trap
modules mounted to a universal connector can be used anywhere
conventional thermodynamic steam traps are used. Used on drip,
tracing and light process applications where removal of air is not
critical. The WD450 & WD450SM trap modules mount to any
Universal Connector. The WD450 is recommended for horizontal
piping only so that cap can be oriented upwards, as shown.
Trap module must be installed in orientation shown. Isolation
valves should be installed before and after the universal
connector to facilitate maintenance. Trap module is attached
to the connector using two bolts and two sealing gaskets.
MAINTENANCE
HOW IT WORKS
The universal connector is permanently installed into the
pipeline where the steam trap would normally be placed. The
trap module is bolted to the universal connector with two bolts
and sealed with two gaskets. When a new trap module is
needed, it can be easily removed and replaced with a standard
open-end or socket wrench without disturbing the existing piping.
If the trap fails for any reason, replace only the trap module.
If universal connector is equipped with an integral strainer it
should be cleaned periodically. For full maintenance details
see Installation and Maintenance Manual.
OPTIONS
Universal Connectors are available with an integral strainer
and blowdown valve. Connector is purchased separately.
See the Universal Connectors section for more information.
F E AT U R E S
• Trap module can be easily removed and replaced in
M AT E R I A L S
• Trap modules can be used with most manufacturers’
Body
Disc
Cap
Insulation Cover
Bolts
Gaskets (2)
minutes without having to disconnect any piping
2-bolt universal connector
• All stainless steel construction with hardened seat
S A M P L E S P E C I F I C AT I O N
The steam trap module shall be designed to attach to the
industry standard two-bolt universal connector. Trap module
shall be of a thermodynamic design. Universal connector shall
conform to the two bolt industry standard with integral strainer
and blowdown options.
C A PA C I T I E S –
54
Stainless Steel, AISI 420
Stainless Steel, AISI 420
Stainless Steel, AISI 416
Stainless Steel, AISI 304
Steel, ASTM A193 GR B7
Spiral Wound 304 Stainless Steel
with Grafoil Filler
Condensate (lbs/hr)
Differential Pressure (PSI)
50
75
100
Model
4
10
15
20
25
30
40
WD450L
WD450LSM
140
215
242
270
295
320
355
390
455
WD450
WD450SM
247
370
420
475
520
560
625
685
800
150
200
250
300
350
400
450
510
600
670
730
790
840
880
925
900
1060
1185
1300
1400
1485
1560
1630
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
WD600LSM-HP
High-Pressure Thermodynamic Steam Trap Module (mounts to Universal Connectors)
Model
WD600LSM-HP (Side Mount Style)
Connections
Fits WU450 Series
Universal Connectors
Stainless Steel
600 PSIG
750ºF
720 PSIG @ 100ºF
800ºF @ 600 PSIG
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WD600LSM-HP
HIGH PRESSURE
Thermodynamic
Steam Trap Module
(Side Mount Style)
Units: Inches
Steam trap modules can be used with other manufacturers’
Universal Connectors.
2.56
T Y P I C A L A P P L I C AT I O N S
DRIP, TRACER: The WD600LSM-HP steam trap module mounted
to a universal connector can be used anywhere conventional
thermodynamic steam traps are used. Used on drip, tracing
and light process applications where removal of air is not
critical. The WD600LSM-HP trap module mounts to any
Universal Connector.
2.58
1.50
WD600LSM-HP Thermodynamic
Steam Trap Module
HOW IT WORKS
The universal connector is permanently installed into the pipeline
where the steam trap would normally be placed. The trap module
is bolted to the universal connector with two bolts and sealed
with two gaskets. When a new trap module is needed, it can be
easily removed and replaced with a standard open-end or socket
wrench without disturbing the existing piping.
I N S TA L L AT I O N
Isolation valves should be installed before and after the universal
connector to facilitate maintenance. Trap module is attached to
the connector using two bolts and two sealing gaskets.
F E AT U R E S
MAINTENANCE
• Trap module can be easily removed and replaced in
minutes without having to disconnect any piping
If the trap fails for any reason, replace only the trap module.
If universal connector is equipped with an integral strainer it
should be cleaned periodically. For full maintenance details
see Installation and Maintenance Manual.
• Trap modules can be used with most manufacturers’
2-bolt universal connector
• All stainless steel construction with hardened seat
S A M P L E S P E C I F I C AT I O N
The steam trap module shall be designed to attach to the
industry standard two-bolt universal connector. Trap module
shall be of a thermodynamic design. Universal connector shall
conform to the two bolt industry standard with integral strainer
and blowdown options.
C A PA C I T I E S –
Condensate (lbs/hr)
Model
150
Differential Pressure (PSI)
200
250
300
450
WD600LSM-HP
465
500
550
600
675
600
730
OPTIONS
Universal Connectors are available with an integral strainer
and blowdown valve. Connector is purchased separately.
See the Universal Connectors section for more information.
M AT E R I A L S
Body
Disc
Cap
Insulation Cover
Bolts
Gaskets (2)
Stainless Steel, AISI 420
Stainless Steel, AISI 420
Stainless Steel, AISI 416
Stainless Steel, AISI 304
Steel, ASTM A193 GR B7
Spiral Wound 304 Stainless Steel
with Grafoil Filler
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
55
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
WT450
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermostatic Steam Trap Module (mounts to Universal Connectors)
Model
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WT450
Fits WU450 Series Universal Connectors
Stainless Steel
450 PSIG
Saturated Steam Temp.
720 PSIG @ 100ºF
800ºF @ 400 PSIG
WT450
Thermostatic
Steam Trap
Module
Steam trap modules can be used with other manufacturers’
Universal Connectors.
T Y P I C A L A P P L I C AT I O N S
DRIP, TRACER, PROCESS: The WT450 steam trap module
mounted on a universal connector can be used anywhere
conventional thermostatic steam traps are used. Used on drip,
tracing and light process applications. The WT450 trap module
mounts to any universal connector.
HOW IT WORKS
The universal connector is permanently installed into the pipeline
where the steam trap would normally be placed. The trap module
is bolted to the universal connector with two bolts and sealed
with two gaskets. When a new trap module is needed, it can
be easily removed and replaced with a standard open-end or
socket wrench without disturbing the existing piping.
F E AT U R E S
Isolation valves should be installed before and after the universal
connector to facilitate maintenance. Trap module is attached to
the connector using two bolts and two sealing gaskets.
MAINTENANCE
When a new trap module is needed, it can be easily removed
and replaced with a standard open-end wrench without
disturbing the existing piping. If the universal connector
is equipped with an integral strainer it should be cleaned
periodically. For full maintenance details see Installation
and Maintenance Manual.
OPTIONS
• Trap module can be easily removed and replaced in
Universal Connectors are available with an integral strainer
and blowdown valve. Connector is purchased separately.
See the Universal Connectors section for more information.
minutes without having to disconnect any piping
• Trap modules can be used with most manufacturers’
2-bolt universal connector
• All stainless steel construction with hardened seat
M AT E R I A L S
Body
Thermal Element
Disc & Seat
Insulation Cover
Bolts
Gaskets (2)
S A M P L E S P E C I F I C AT I O N
The steam trap module shall be designed to attach to the
industry standard two-bolt universal connector. Trap module
shall be of a thermostatic design. The universal connector
shall conform to the two-bolt industry standard with integral
strainer and blowdown options.
C A PA C I T I E S –
I N S TA L L AT I O N
Stainless Steel, AISI 420
Stainless Steel, AISI 302
Stainless Steel, AISI 420
Stainless Steel, AISI 304
Steel, ASTM A193 GR B7
Spiral Wound 304 Stainless Steel
with Grafoil Filler
Condensate (lbs/hr)
Model
Orifice
Size
5
10
20
50
WT450
3/16”
441
625
882
1391
Steam Inlet Pressure (PSIG)
100
125
150
200
250
300
350
400
450
1827
2483
2636
2777
2903
3019
1969
2095
2305
Note: 5/64” low capacity orifice is available upon request.
Back Pressure as
Percentage of Inlet Pressure
Percent Decrease in
Trap Capacity
56
10
20
25
30
40
50
60
70
80
90
0
0
0
2
5
12
20
30
40
55
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
Bi-Metallic Steam Trap Module
Model
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WB450
(mounts to Universal Connectors)
WB450
Fits WU450 Series
Universal Connectors
Stainless Steel
450 PSIG
662˚F
720 PSIG @ 100˚F
800ºF @ 400 PSIG
WB450
Bi-Metallic
Steam Trap
Module
Steam trap modules can be used with other manufacturers’
Universal Connectors.
T Y P I C A L A P P L I C AT I O N S
M AT E R I A L S
The WB450 Series Bi-Metallic Module is used in steam tracing
applications (process lines, instrumentation and winterization,
general steam jacketing) and small process applications where
accurate control of condensate discharge temperature is required
to provide maximum usage of energy.
Body and Cover
Bimetal Element
Valve Seat
Gaskets (2)
HOW IT WORKS
Valve Stem
Stainless Steel, A-351, Gr. CF8
GB14
420 Stainless Steel
Spiral Wound 304 Stainless Steel with
Grafoil Filler
Stainless Steel with Grafoil Filler
Bi-Metallic plates of dissimilar metals respond to steam
temperature variations, whereby the metals are relaxed at
relatively cool conditions, such as start-up, and the trap is
open for the discharge of condensate. As temperature nears
the preset subcool temperature below saturation, the metals
react and expand, closing the trap and preventing the loss of
live steam. Field adjustability of the bimetal element allows
precise control of the condensate discharge temperature.
Units: Inches
2.00
F E AT U R E S
• Excellent for various steam tracing and small process
4.50
applications where maximum energy usage is desired
• Field-adjustable bimetal element allows precise control
of condensate discharge temperature, providing maximum
use of additional energy in the condensate
• Internal screen and seat/plug design help prevent pipe
scale and debris from accumulating on seating surfaces
to provide trouble-free operation
Maximum Trap Capacities at Various Inlet Pressures and Set Temperatures – Condensate (lbs/hr)
Notes:
Set Temperature
15
30
50
100
Steam Inlet Pressure (PSIG)
125
150
200
250
300
350
400
450
220˚F
56
70
102
144
161
177
204
228
250
270
289
306
240˚F
116
164
212
300
336
368
425
475
520
562
600
637
260˚F
134
190
245
346
387
424
490
548
600
648
693
735
280˚F
143
202
261
370
413
453
523
584
640
691
739
784
1) Capacities in chart are based on discharging condensate to atmosphere with a condensate temperature of 200˚ F.
2) Maximum discharge capacity up to 970 lbs/hr, depending on operating condition requirements.
3) Contact factory for additional information including other condensate set and discharge temperatures.
4) To ensure proper operation and eliminate possible steam loss, the Set Temperature should be lower than 27 ˚F subcool
(degrees below inlet steam saturation temperature).
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
57
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
450 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
WT450 & WD450 Steam Traps with Universal Connectors - Dimensions
WT450 Trap Module with Universal Connectors
Connectors available in 1/2”, 3/4” and 1” sizes in NPT and Socket-Weld Connections
Units: inches
3.31 (1/2”, 3/4”)
6.06 (1”)
4.38
Note: Optional
Flange units
available.
3.31 (1/2”, 3/4”)
6.06 (1”)
4.38
4.38
2.75
3.38
.75
2.92 (1/2”, 3/4”)
5.66 (1”)
WT450 Trap Module
with
WU450 Connector
WT450 Trap Module
with WU450SB Connector
(Strainer & Blowdown)
WT450 Trap Module
with WU450S Connector
(Strainer)
WD450 Trap Module with Universal Connectors
Connectors available in 1/2”, 3/4” and 1” sizes in NPT and Socket-Weld Connections
Units: inches
3.31 (1/2”, 3/4”)
6.06 (1”)
3.31 (1/2”, 3/4”)
6.06 (1”)
2.69
Note: Optional
Flange units
available.
2.69
2.69
2.75
3.38
.75
2.92 (1/2”, 3/4”)
5.66 (1”)
WD450 Trap Module
with WU450 Connector
58
WD450 Trap Module
with WU450S Connector
(Strainer)
WD450 Trap Module
with WU450SB Connector
(Strainer & Blowdown)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
450 Series
WSIB450 Steam Traps with Universal Connectors - Dimensions
Note: Optional
Flange units
available.
WSIB450 Trap Module with Universal Connectors
Connectors available in 1/2”, 3/4” and 1” sizes in NPT or Socket-Weld Connections
Units: inches
WSIB450
Trap Module
WU450
CONNECTOR
WSIB450
Trap Module
WU450S
CONNECTOR
Strainer
360˚
Swivel
2.92 (1/2”, 3/4”)
5.66 (1”)
CONNECTOR
Strainer & Blowdown
360˚
Swivel
360˚
Swivel
3.31 (1/2”, 3/4”)
6.06 (1”)
WSIB450
Trap Module
WU450SB
3.31 (1/2”, 3/4”)
6.06 (1”)
A
A
A
.75
2.75
3.34
3.34
3.34
3.38
3.00
3.00
3.00
WSIB450
A-Dimension = 5.81”
WSIB450H A-Dimension = 6.81”
WU450S-LR
CONNECTOR
Strainer
3.31 (1/2”, 3/4”)
3.62 (1”)
WSIB450
Trap Module
WU450SB-LR
CONNECTOR
Strainer & Blowdown
3.31 (1/2”, 3/4”)
3.62 (1”)
WSIB450
Trap Module
3.4
3.9
A
A
3.50
3.50
3.00
3.00
WSIB450
A-Dimension = 6.12”
WSIB450H A-Dimension = 7.12”
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
59
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
450 Series
WFT450 Steam Trap Modules with Universal Connectors - Dimensions
WFT450 Trap Module with Universal Connectors
Connectors available in 1/2”, 3/4” and 1” sizes in NPT or Socket-Weld Connections
Note: Optional
Flange units
available.
Units: inches
WFT450
Trap Module
WFT450
Trap Module
3.31 (1/2”, 3/4”)
6.06 (1”)
2.92 (1/2”, 3/4”)
5.66 (1”)
3.50
3.50
.75
7.40
2.75 (WU450S)
3.38 (WU450SB)
WU450
WU450SB
CONNECTOR
CONNECTOR
Strainer & Blowdown
7.40
WFT450
Trap Module
3.31 (1/2”, 3/4”)
3.62 (1”)
3.50
3.4 (WU450S-LR)
3.9 (WU450SB-LR)
RIGHT to LEFT Flow
(as shown)
LEFT to RIGHT Flow
(as shown)
7.56
60
WU450SB-RL
WU450SB-LR
CONNECTOR
Strainer & Blowdown
CONNECTOR
Strainer & Blowdown
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
UNIVERSAL STYLE STEAM TRAPS
450 Series
WD450SM/
WB450 & WD600LSM-HP Steam Trap Modules with Universal Connectors - Dimensions
Note: Optional
Flange units
available.
WB450 Trap Module with Universal Connectors
Connectors available in 1/2”, 3/4” and 1” sizes in NPT and Socket-Weld Connections
Units: inches
WB450
Steam Trap
5.34
2.92 (1/2”, 3/4”)
5.66 (1”)
5.34
5.34
2.75
3.38
3.31 (1/2”, 3/4”)
6.06 (1”)
3.31 (1/2”, 3/4”)
6.06 (1”)
WU450
WU450S
WU450SB
CONNECTOR
CONNECTOR
Strainer
CONNECTOR
Strainer & Blowdown
WD450SM & WD600LSM-HP Trap Module with Universal Connectors
Connectors available in 1/2”, 3/4” and 1” sizes in NPT and Socket-Weld Connections
Units: inches
3.56
A
A
Note: Optional
Flange units
available.
1.17
1.17
B
C
WD450SM
or
WD600LSM-HP
Steam Trap
DIMENSIONS – inches
Size
A
B
C
1/2”
3/4”
1”
3.31
3.31
3.62
3.25
3.25
3.44
3.78
3.78
3.95
WU450S-LR
WU450SB-LR
CONNECTOR
Strainer
CONNECTOR
Strainer & Blowdown
3.56
A
A
1.17
1.17
B
C
WD450SM
or
WD600LSM-HP
Steam Trap
WU450SB-RL
WU450S-RL
CONNECTOR
Strainer & Blowdown
CONNECTOR
Strainer
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
61
STEAM TRAPS
STEAM TRAPS
FDA400 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermostatic Clean Steam Trap (Repairable)
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
FDA401, FDA402, FDA403
1/2”, 3/4”
Tri-clamp
Stainless Steel
90 PSIG
Saturated Steam Temperature
145 PSIG up to 338ºF
350ºF @ 132 PSIG
FDA402
Sanitary
Clamp for
Trap Body
shown
M AT E R I A L S
T Y P I C A L A P P L I C AT I O N S
the inlet or outlet capable of 360˚ orientation.
Body
Gasket
Element Plate
Thermal Element
Clamp
HOW IT WORKS
C A PA C I T I E S –
DRIP, PROCESS: The FDA400 Series thermostatic steam traps
are used on clean steam applications as drip traps on piping
runs as well as drainage for CIP/SIP systems and various process
vessels. The FDA400 Series allows for a 90˚ connection on either
Stainless Steel, AISI 316L
Teflon Coated Elastomer
Stainless Steel, AISI 316L
Stainless Steel, AISI 316L
Stainless Steel, AISI 304
Condensate (lbs/hr)
Differential Pressure (PSI)
10
20
50
75
90
140
240
400
690
850
950
850
1200
1695
2690
3165
3400
Orifice Size
The thermostatic trap contains a welded 316L stainless steel
thermal element that expands when heated and contracts when
cooled. When air and condensate are present the trap is in the
open discharge position. When steam reaches the trap the
element expands closing the trap tightly.
Note: Capacities at 10˚F below saturation.
F E AT U R E S
S A M P L E S P E C I F I C AT I O N
• Universal horizontal connection swivels to any angle
• All wetted parts are 316L stainless steel
• Electro-polish finish of 20-25 microinches RA on internal body
• Electro-polish finish of 25-32 microinches RA on external body
• Operates close to saturation curve to minimize
condensate back-up
• Completely self-draining in the vertical downward flow
orientation
The Steam Trap shall be all 316L stainless steel thermostatic type
with a balanced pressure bellows that operates close to saturated
steam temperatures. Inlet, outlet or both connections must contain
a 90˚ swivel arrangement capable of 360˚ orientation. Internal body
parts shall have an electro-polish finish of 20-25 microinches
RA internally and a 25-32 finish externally. The unit shall have
a split-body sanitary clamp design for easy maintenance. Trap
shall be completely self-draining when mounted vertically.
(inches)
5
9/64
5/16
I N S TA L L AT I O N & M A I N T E N A N C E
Trap is designed for installation in a vertical, downward flow orientation
to ensure that the self-draining clean steam requirement is satisfied.
For full maintenance details see Installation and Maintenance Manual.
FDA400 Series
Connections: 1/2” & 3/4”
Units: inches
FLOW
360˚
Swivel
1.80
1.80
FLOW
1.50
360˚
Swivel
FLOW
3.45
4.2
2.77
3.38
2.85
3.0
360˚
Swivel
3.3
FDA401 Inlet: 90˚ Angle
Outlet: 90˚ Angle
62
FDA402 Inlet: 90˚ Angle
Outlet: Straight
FDA403 Inlet: Straight
Outlet: 90˚ Angle
STEAM TRAPS
STEAM TRAPS
FDA500
Thermostatic Clean Steam Trap (Repairable)
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
FDA500, FDA510
1/2”, 3/4”, 1”
Tri-clamp, NPT, Tube Weld
Stainless Steel
90 PSIG
Saturated Steam Temperature
145 PSIG up to 338ºF
350ºF @ 132 PSIG
Sanitary
Clamp for
Trap Body
T Y P I C A L A P P L I C AT I O N S
DRIP, PROCESS: The FDA500 Series thermostatic steam traps
are used on clean steam applications as drip traps on piping
runs as well as drainage for CIP/SIP systems and various
process vessels.
HOW IT WORKS
The thermostatic trap contains a welded 316L stainless steel
thermal element that expands when heated and contracts when
cooled. When air and condensate are present the trap is in the
open discharge position. When steam reaches the trap the
element expands closing the trap tightly.
M AT E R I A L S
Body
Gasket
Element Plate
Thermal Element
Clamp
Stainless Steel, AISI 316L
Teflon/Encapsulated Viton
Stainless Steel, AISI 316L
Stainless Steel, AISI 316L
Stainless Steel, AISI 304
C A PA C I T I E S –
Condensate (lbs/hr)
Differential Pressure (PSI)
10
20
50
75
90
140
240
400
690
850
950
850
1200
1695
2690
3165
3400
F E AT U R E S
Model
Orifice
(inches)
5
• All wetted parts are 316L stainless steel
• Electro-polish finish of 20-25 microinches RA on internal body
• Electro-polish finish of 25-32 microinches RA on external body
• Operates close to saturation curve to minimize
FDA500
9/64
FDA510
5/16
Note: Capacities at 10˚F below saturation.
FLOW
condensate back-up
• Completely self-draining in the vertical downward flow
orientation
S A M P L E S P E C I F I C AT I O N
The steam Trap shall be all 316L stainless steel thermostatic
type with a balanced pressure bellows that operates close to
saturated steam temperatures. Internal body parts shall have
an electro-polish finish of 20-25 microinches RA internally and a
25-32 finish externally. The unit shall have a split-body sanitary
clamp design for easy maintenance. Trap shall be completely
self-draining when mounted vertically.
4.2
Tube
2.6
4.6
Sanitary
NPT
I N S TA L L AT I O N
Trap is designed for installation in a vertical, downward
flow orientation to ensure that the self-draining clean steam
requirement is satisfied. Isolation valves should be installed
for maintenance purposes. For welded installations, removal
of the body gasket and thermal element is necessary.
MAINTENANCE
Dirt is the most common cause of premature failure. Therefore,
the upstream strainer should be periodically inspected and
cleaned. For full maintenance details see Installation and
Maintenance Manual.
2.6
2.1
1.6
Units: inches
Connections
1/2”, 3/4”, 1”
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www.watsonmcdaniel.com
63
STEAM TRAPS
STEAM TRAPS
FDA600
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermostatic Clean Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
FDA600
1/2”, 3/4”, 1”
Tri-clamp, NPT, Tube Weld
Stainless Steel
110 PSIG
Saturated Steam Temperature
145 PSIG up to 338ºF
350ºF @ 132 PSIG
T Y P I C A L A P P L I C AT I O N S
M AT E R I A L S
DRIP, PROCESS: The FDA600 Steam Traps are used on clean
steam applications as drip traps on piping runs as well as
drainage for CIP/SIP systems and various process vessels.
Body
Thermal Element
O-Ring, FDA Grade
Nuts & Bolts
HOW IT WORKS
The thermostatic trap contains a welded 316L stainless steel
thermal element that expands when heated and contracts when
cooled. When air and condensate are present the trap is in the
open discharge position. When steam reaches the trap the
element expands closing the trap tightly.
F E AT U R E S
• All wetted parts are 316L stainless steel
• Operates close to saturation curve to minimize
condensate back-up
• Completely self-draining in the vertical downward flow
orientation
S A M P L E S P E C I F I C AT I O N
Stainless Steel, AISI 316L
Stainless Steel, AISI 316L
Teflon Coated Silicone/FEP
Stainless Steel, AISI 316L
HOW TO SIZE/ORDER
Size/Model: FDA600, Specify pipe size and connections.
C A PA C I T I E S –
Condensate (lbs/hr)
Condensate
Temp Below
Saturation
1
5
Differential Pressure (PSI)
10
20
50
10 ˚F
32
105
175
75
110
290
615
805
1160
20 ˚F
42
115
225
440
1060
1500
1850
Cold Water
735
1070
1375
1900
3100
3500
4600
The Steam Trap shall be all 316L stainless steel thermostatic
type with a balanced pressure bellows that operates close to
saturated steam temperatures. The unit shall have a split-body
design for easy maintenance. Trap shall be completely
self-draining when mounted vertically.
FLOW
I N S TA L L AT I O N
The trap is designed for installation in a vertical, downward
flow orientation to ensure that the self-draining clean steam
requirement is satisfied. Isolation valves should be installed
for maintenance purposes. For welded installations, removal
of the body gasket and thermal element is necessary.
3.2
NPT
1.9
4.2
Sanitary
Tube
MAINTENANCE
Dirt is the most common cause of premature failure. Therefore,
the upstream strainer should be periodically cleaned. For full
maintenance details see Installation and Maintenance Manual.
Units: inches
64
3.2
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
FDA800
Thermodynamic Clean Steam Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
FDA800
1/2”
Tri-Clamp, NPT, Tube Weld
Stainless Steel
150 PSIG
500ºF
230 PSIG @ 850ºF
850ºF @ 230 PSIG
NPT
Tri-Clamp
T Y P I C A L A P P L I C AT I O N S
M AT E R I A L S
DRIP, PROCESS: The FDA800 Series Thermodynamic Clean
Steam Traps are used in sanitary systems as drip traps on
steam mains as well as for drainage on various process
vessels such as separators and filters.
Body
Disc
Cap
Stainless Steel, AISI 316L
Stainless Steel, AISI 316L
Stainless Steel, AISI 316L
HOW IT WORKS
HOW TO SIZE/ORDER
The thermodynamic trap has a cyclic on/off operation with a
disc that is pushed open when condensate is present and pulled
closed when steam tries to escape.
Size/Model: 1/2” FDA800, Specify connections.
F E AT U R E S
• Small and compact
• All 316L stainless steel components
• Works in any position (horizontal preferred)
S A M P L E S P E C I F I C AT I O N
The steam trap shall be a thermodynamic disc type with an
all 316L stainless steel construction and integral seat design.
Unit shall be capable of installation in any orientation and
self-draining when mounted vertically.
I N S TA L L AT I O N
The trap can be installed in any position; however, horizontal is
preferred. For self-draining or freezeproof requirements, the trap
may be installed vertically. Installation should include a strainer
and isolation valves for maintenance purposes.
1.38
2.6 Sanitary
2.6 NPT
MAINTENANCE
Dirt is the most common cause of premature failure. Therefore,
the upstream strainer should be periodically cleaned. For full
maintenance details see Installation and Maintenance Manual.
C A PA C I T I E S –
Units: Inches
Condensate (lbs/hr)
Size
3.5
5
10
15
20
1/2”
180
185
190
195
200
Differential Pressure (PSI)
25
30
215
220
40
50
75
100
150
230
250
310
375
500
Note: Maximum back pressure not to exceed 80% of inlet pressure.
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www.watsonmcdaniel.com
65
STEAM TRAPS
STEAM TRAPS
WPN Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Bi-Metallic Steam Traps
Model
Sizes
WPN-40
1”, 11/2”, 2”
WPN-63
1/ ”, 3/ ”,
2
4
Connections
Body & Cover Material
PMO Max Operating Pressure (PSIG)
TMO Max Operating Temperature (˚F)
Max Press. Drop for Press. Controller (PSI)
Pressure Controller
1/ ”, 3/ ”,
2
4
NPT, FLG, SW, Butt-weld
C22.8
SA105
470
482
470
R32
Model
Sizes
325
725
325
R22
220
842
190
R13
520
572
470
R32
470
635
325
R22
825
923
1325/880
R90/R60
690 660
662 842
680
R46
590
932
400
986
880
R60
1470 910
950 986
1620
R130
735
662
470
R32
660
842
470
R32
1/ ”, 3/ ”,
2
4
FLG, SW, Butt-weld
SA182 F22
2250
932
825
572
825
R56
WPN-250
1”
1/ ”, 3/ ”,
2
4
FLG, SW, Butt-weld
SA182 F12
1325
842
1325
R90
825
572
FLG, SW, Butt-weld
SA182 F12
WPN-160
1”
1/ ”, 3/ ”,
2
4
Connections
Body & Cover Material
PMO Max. Operating Pressure (PSIG)
TMO Max. Operating Temperature (˚F)
Max Press. Drop for Press. Controller (PSI)
Pressure Controller
FLG, SW, Butt-weld
SA182 F12
420
842
190
R13
WPN-100
1”
11/2”, 2”
1”
FLG, SW, Butt-weld
SA182 F22
515
1022
2700
932
2260 1580
950 986
2260
R154
1190
1022
DRIP, TRACER, PROCESS: The WPN Series of Bi-Metallic Steam
Traps are use in steam tracing, steam main drips and non-critical
process equipment. They can be used in outdoor applications
that are subject to freezing. Bi-Metallic traps will back up some
condensate into the system and should only be used when this
condition is permissible.
lbs/hr
T Y P I C A L A P P L I C AT I O N S
1) = 18˚ F SUB-COOL
2) = 50˚ F SUB-COOL
3) = COLD
HOW IT WORKS
When the system is cold the trap is wide open discharging air and
cold condensate. When the bimetallic plates inside the trap heat up,
they pull the seat closed and the flow becomes restricted. When
steam temperature is reached the trap shuts off tightly.
Differential pressure (PSI)
F E AT U R E S
• Excellent for high pressure and superheated
WPN-40 1/2”, 3/4”, 1” – R22 & R32 Controller
S A M P L E S P E C I F I C AT I O N
Steam trap shall be Watson McDaniel WPN Series Bi-Metallic
Steam Trap. Trap must be capable of being completely serviced
while still in line.
I N S TA L L AT I O N
lbs/hr
steam applications
• Freezeproof and resistant to water hammer
• Suitable for superheated steam with check valve installed at inlet
• In-line repairable
• Trap can be welded into line
1) = 18˚ F SUB-COOL
2) = 50˚ F SUB-COOL
3) = COLD
The trap can be installed in a vertical or horizontal plane.
See Installation and Maintenance Manual.
Differential pressure (PSI)
WPN-40 1/2”, 3/4”, 1” – R13 Controller
66
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
WPN Series
Bi-Metallic Steam Traps
19800
88000
15400
66000
11000
44000
6600
OL
-CO
B
U
FS
50˚
L
COO
UBS
F
27˚
4400
2200
lbs/hr
lbs/hr
LD
CO
22000
-COOL
50˚ F SUB
11000
OOL
27˚ F SUB-C
Differential pressure (PSI)
Differential pressure (PSI)
WPN-40 11/2”, 2” R13, R22 & R32 Controller
WPN-63 1/2”, 3/4”, 1”
11000
8800
6600
22500
11000
LD
CO
4400
OL
-CO
SUB
F
˚
50
7500
4400
27˚ F
2200
1760
1540
1320
1100
lbs/hr
15400
lbs/hr
COLD
L
-COO
SUB
2200
1750
1320
1100
1000
650
COLD
B-COOL
50˚ F SU
COOL
SUBF
˚
8
1
450
Differential pressure (PSI)
Differential pressure (PSI)
WPN-100 – 1/2”, 3/4”, 1”
WPN-63 – 11/2”, 2”
17600
11000
13200
8800
6600
8800
6600
COLD
D
COL
4400
50˚ F SUB-COOL
B-COOL
18˚ F SU
880
lbs/hr
lbs/hr
4400
2200
1750
1320
2200
1750
1320
50˚ F SUB-COOL
18˚ F SUB-COOL
880
440
Differential pressure (PSI)
WPN-160 1/2”, 3/4”, 1”
Differential pressure (PSI)
WPN-250 – 1/2”, 3/4”, 1”
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www.watsonmcdaniel.com
67
STEAM TRAPS
STEAM TRAPS
WPN Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Bi-Metallic Steam Traps
DIMENSIONS & WEIGHTS –
Model
WPN-40
Connection
L
H
H1
H2
H3
Weight (lbs)
1/ ”, 3/ ”
2
4
FLG #150/300
6.0
3.92
2.48
.96
2.8
7.7
1”
FLG #150/300
8.4
3.92
2.48
.96
2.8
9.2
11/2”, 2”
FLG #150/300
9.2
5.76
-
-
3.6
25.0
1/ ”, 3/ ”
2
4
NPT, SW
3.92
3.92
2.48
.96
2.8
3.7
1”
NPT, SW
4.12
4.12
2.20
.52
2.8
4.6
11/2”
NPT, SW
5.2
5.76
-
-
3.6
17.6
17.6
2”
1/ ”, 3/ ”,
2
4
11/2”, 2”
1”
1/ ”, 3/ ”,
2
4
11/2”
1”
2”
WPN-63
1/ ”, 3/ ”,
2
4
11/2”
1”
2”
1/ ”, 3/ ”,
2
4
11/2”, 2”
WPN-100
inches/pounds
Size
1”
NPT, SW
8.4
5.76
-
-
3.6
Butt-weld
10.0
3.92
2.48
.96
2.8
5.0
Butt-weld
10.0
5.76
-
-
3.6
21.0
17.6
FLG #600
8.4
4.16
1.68
-
2.8
FLG #600
10.4
5.76
-
-
3.6
29
FLG #600
12.0
5.76
-
-
3.6
30.8
SW
6.4
4.16
1.68
-
2.8
10.0
SW
5.2
5.76
-
-
3.6
17.6
SW
8.4
5.76
-
-
3.6
17.6
Butt-weld
6.4
4.16
1.68
-
2.8
10.0
Butt-weld
10.0
5.76
-
-
3.6
21
1/ ”, 3/ ”
2
4
FLG #600
8.4
4.16
1.68
-
2.8
14.0
1”
FLG #600
9.2
4.16
1.68
-
2.8
20.5
1”
SW
6.4
4.16
1.68
-
2.8
10.0
1”
1/ ”, 3/ ”,
2
4
1/ ”, 3/ ”,
2
4
Butt-weld
6.4
4.16
1.68
-
2.8
10.0
1/ ”, 3/ ”
2
4
FLG #900/1500
8.4
4.16
1.68
-
2.8
14.0
WPN-160 *
1”
FLG #900/1500
9.2
4.16
1.68
-
2.8
21.0
WPN-250 *
1/ ”, 3/ ”,
2
4
1/ ”, 3/ ”,
2
4
1”
SW
6.4
4.16
1.68
-
2.8
10.3
1”
Butt-weld
6.4
4.16
1.68
-
2.8
10.3
* WPN-160 FLG is 900#; WPN-250 FLG is 1500#.
68
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
WPN Series
STEAM TRAPS
STEAM TRAPS
Bi-Metallic Steam Traps
WPN-40
WPN-40/63
1/2”, 3/4”, 1”
11/2”, 2”
L
H3
H3
H
H
FLOW
H1
FLOW
H2
L
L
L
L
NPT
Butt-weld
SW
NPT
SW
Butt-weld
WPN-63/100/160/250
1/2”, 3/4”, 1”
H3
Butt-weld
H
FLG
SW
FLOW
H1
L
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www.watsonmcdaniel.com
69
STEAM TRAPS
STEAM TRAPS
FM/FSM Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Manifolds
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
Pressure/Temperature Rating
FM
1/2”, 3/4”
NPT, SW
Fabricated Carbon Steel
720 PSIG
720 PSIG @ 508ºF
FSM
1/2”, 3/4”
NPT, SW
Forged Steel
600 PSIG
600 PSIG @ 500ºF
T Y P I C A L A P P L I C AT I O N
The FM / FSM Manifolds are used for steam distribution to the
tracing system and for condensate collection. Typically used in
chemical plants, petrochemical plants, textile industries, rubber
plants and general industry. Manifolding your distribution and
condensate collection system not only cuts down on installation
and maintenance time, but also provides freeze protection.
FM
Manifold
(Carbon Steel)
DESCRIPTION FM
The FM Manifold is equipped with threaded or socket welded
mount holes for ease of installation. Condensate collection
manifolds are provided with a built-in siphon tube to minimize
bi-phase flow, which reduces water hammer, and allows flash
steam space to prevent isolation station freeze damage.
FSM
Manifold
(Forged Steel)
DESCRIPTION FSM
The FSM Manifold has a sealing system that utilizes an
austenitic stainless steel piston that slides into two rings, one
upper made of reinforced graphite, and one lower made of
graphite interposed with thin stainless steel plates. The sealing
surface is the surface of the piston. By tightening the bonnet nuts
that are on the spring washers, a constant load on the upper ring
is obtained, securing a tight seal to atmosphere. The same load,
through the upper ring and the lantern, is applied to the lower
ring that by expanding toward the body wall and toward the
surface of the piston when the valve is in the closed position,
ensures a perfect seal of the valve against the flow of the fluid.
F E AT U R E S
• Compact design saves valuable plant space
• Available in 4, 6, 8 & 12 branch designs
• Available with preassembled steam trap stations
• Standard designs or custom built manifolds available
• Provides freeze protection
• Reduces installation and maintenance time
• On FSM Model valve bonnets are long neck type to allow
M AT E R I A L S – F M
Body
Carbon Steel
M AT E R I A L S – F S M
Body
Hand Wheel
Bonnet
Valve ring above
Valve ring below
Piston
Forged Steel, A105
Sheet Metal
Forged Steel, A105
Graphite
Graphite/Stainless Steel
Stainless Steel, A304
for installation of insulation, keeping surface temperatures
low for protection of personnel
70
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM TRAPS
STEAM TRAPS
FM Series
Carbon Steel Manifolds
DIMENSIONS & WEIGHTS –
FM Series
Description
Vertical Coll. Manifold w/ 4 Side
Conn. 1/2" NPT Carbon Steel
Vertical Coll. Manifold w/ 4 Side
Conn. 1/2" SW Carbon Steel
Vertical Coll. Manifold w/ 4 Side
Conn. 3/4" NPT Carbon Steel
Vertical Coll. Manifold w/ 4 Side
Conn. 3/4" SW Carbon Steel
Vertical Coll. Manifold w/ 4 Side & 2
Front Conn. 1/2" NPT Carbon Steel
Vertical Coll. Manifold w/ 4 Side & 2
Front Conn. 1/2" SW Carbon Steel
Vertical Coll. Manifold w/ 4 Side & 2
Front Conn. 3/4" NPT Carbon Steel
Vertical Coll. Manifold w/ 4 Side & 2
Front Conn. 3/4" SW Carbon Steel
Vertical Coll. Manifold w/ 8 Side
Conn. 1/2" NPT Carbon Steel
Vertical Coll. Manifold w/ 8 Side
Conn. 1/2" SW Carbon Steel
Vertical Coll. Manifold w/ 8 Side
Conn. 3/4" NPT Carbon Steel
Vertical Coll. Manifold w/ 8 Side
Conn. 3/4" SW Carbon Steel
Vertical Coll. Manifold w/ 8 Side & 4
Front Conn. 1/2" NPT Carbon Steel
Vertical Coll. Manifold w/ 8 Side & 4
Front Conn. 1/2" SW Carbon Steel
Vertical Coll. Manifold w/ 8 Side & 4
Front Conn. 3/4" NPT Carbon Steel
Vertical Coll. Manifold w/ 8 Side & 4
Front Conn. 3/4" SW Carbon Steel
Vertical Coll. Manifold w/ 12 Side
Conn. 1/2" NPT Carbon Steel
Vertical Coll. Manifold w/ 12 Side
Conn. 1/2" SW Carbon Steel
Vertical Coll. Manifold w/ 12 Side
Conn. 3/4" NPT Carbon Steel
Vertical Coll. Manifold w/ 12 Side
Conn. 3/4" SW Carbon Steel
inches / pounds
Condensate Inlet Connection
CI. 3000 Per ANSI B16.11
A
# Conn. # Conn. Conn.
Size
Type
on Side on Front
Total
6”
B
Length
Weight
(lbs)
1/2"
NPT
4
0
4
24
25
1/2"
SW
4
0
4
24
25
3/4"
NPT
4
0
4
24
27
3/4"
SW
4
0
4
24
27
1/2"
NPT
4
2
6
24
27
1/2"
SW
4
2
6
24
27
3/4"
NPT
4
2
6
24
29
3/4"
SW
4
2
6
24
29
1/2"
NPT
8
0
8
40
40
1/2"
SW
8
0
8
40
40
41/2”
3”
21/4”
21/2” Typ.
Outlet
Connection
2”
6”
A
Inlet
Conn.
8” Typ.
4” Typ.
3/4"
NPT
8
0
8
40
42
3/4"
SW
8
0
8
40
42
1/2"
NPT
8
4
12
40
46
1/2"
SW
8
4
12
40
46
3/4"
NPT
8
4
12
40
48
3/4"
SW
8
4
12
40
48
1/2"
NPT
12
0
12
56
56
1/2"
SW
12
0
12
56
56
3/4"
NPT
12
0
12
56
58
3/4"
SW
12
0
12
56
58
3/4” Siphon Pipe
Diameter
16”
B
21/2”
Tube Diameter
Pipe Cap
Drain Connection
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
71
STEAM TRAPS
STEAM TRAPS
FSM Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Forged Steel Manifolds
DIMENSIONS & WEIGHTS –
L
H
D
C
O
I
S
S1
S2
A
A1
B
B1
No. of
Valves
No. of
Holes
Weight
(lbs)
4.33"
4.33"
4.33"
1.61"
1.61"
1.61"
3.94"
3.94"
3.94"
8.97"
8.97"
8.97"
10.63"
10.63"
10.63"
6.30"
6.30"
6.30"
13.03"
-
28.1"
-
36.22"
2.79"
2.79"
2.79"
1.22"
1.22"
1.22"
3.23"
3.23"
3.23"
2.79"
2.79"
2.79"
4
8
12
2 (M12)
4 (M12)
6 (M12)
23
49
72
Model
FSM-4
FSM-8
FSM-12
inches/pounds
O
D
TYP.
I
TYP.
C
OPEN
CLOSED
B
B1
A1
A
H
S
M12 THREAD
MTG. HOLES
(FSM-4)
S1
L
1/2”
SW
CONN.
(FSM-8)
S2
(FSM-12)
11/2” SW
CONNECTION
C A PA C I T I E S
Pressure
(PSIG)
Condensate
(lbs/hr) 1
Steam
(lbs/hr) 2
25
50
75
100
125
150
200
250
300
400
500
600
1850
1000
840
610
660
620
570
535
510
470
460
440
160
310
460
730
760
900
1200
1500
1800
2350
3000
3550
1
Saturated condensate discharging into 20 PSI back pressure
Saturated Steam flow @ 5000 ft/min velocity
2
72
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www.watsonmcdaniel.com
Condensate Return Pumps
PUMPS
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
73
PUMPS
Condensate Return Pumps
Stand Alone Pressure Motive Pumps
The stand alone Pressure Motive Pump (PMP) consists of the pump tank, the internal
operating mechanism, and a set of inlet and outlet check valves. Depending on the
particular model, pump tanks can be made from Ductile Iron, Fabricated Steel or
Stainless Steel. In most installations an additional receiver or reservoir tank and possibly
a high capacity steam trap may be required to complete the system.
Introduction
74
Page No.
Pressure Motive Pump (PMP) Series
76-89
76-81
PMPC
Basic Pumping Applications up to 200 PSIG
• Ductile Iron body (PMO 200 PSIG)
• Patented Snap-Assure Mechanism with
Inlet and Outlet Check Valves
82
PMPF
Basic Pumping Applications up to 200 PSIG
• Fabricated Carbon Steel body (PMO 200 PSIG)
• Patented Snap-Assure Mechanism with
Inlet and Outlet Check Valves
83
PMPSS
Corrosive Applications up to 150 PSIG
• Fabricated Stainless Steel body (PMO 150 PSIG)
• Patented Snap-Assure Mechanism with
Inlet and Outlet Check Valves
84
PMPLS
Low-Profile Applications up to 150 PSIG
• Fabricated Carbon Steel body (PMO 150 PSIG)
• Patented Snap-Assure Mechanism with
Inlet and Outlet Check Valves
85
PMPM
Extremely Low-Profile Applications up to 150 PSIG
• Cast Iron body (PMO 150 PSIG)
• Internal Pump Mechanism with
Inlet and Outlet Check Valves
86
PMPBP
High-Capacity Applications up to 150 PSIG
• Fabricated Carbon Steel body (PMO 150 PSIG)
• Internal Pump Mechanism with
Inlet and Outlet Check Valves
87
PMPSP
Sump Drainer
88-89
• Fabricated Carbon Steel body (PMO 150 PSIG)
• These non-electric sump drainers are designed to drain
unwanted water from sumps, pits, underground tunnels
and low lying areas
• Patented Snap-Assure Mechanism with
Inlet and Outlet Check Valves
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Condensate Return Pumps
Pumps with Receiver Tanks
Page No.
Simplex, Duplex, Triplex & Quadraplex Systems
90-91
Standardized Simplex, Duplex, Triplex, and Quadraplex packaged
systems include the Stand Alone Pumps and check valves with receiver
tank mounted on a steel base and frame. Multiple pumping units can
be used for increased capacity or for system redundancy. The units are
available in Ductile Iron, Carbon Steel and Stainless Steel.
Additional options such as sight glasses, insulation jackets, cycle counters,
motive and vent piping, pressure regulators, steam traps, strainers and
ASME code stamps, etc., are available.
Pump & Trap Combinations
Models PMPT & WPT
92-97
Pump & trap combinations are used for draining condensate
from a single piece of heat transfer equipment. Model PMPT
has an internal steam trap inside the pump body. The WPT Series
have an appropriately sized external steam trap attached to the
pump and are mounted on a common base.
ACCESSORIES & OPTIONS for Stand Alone Units
98-99
Custom Tanks, Insulation Jackets, Gauge Glasses, Cycle Counters,
Pre-piped Accessories, Mechanisms, Check Valves, etc.
SIZING & SELECTION for All Non-Electric Pumps & Systems
Pump Capacities
PMP, Receiver & Vent, Pump-Trap & Reservoir Sizing
100-101
102-109
Customized Skid Packages
Watson McDaniel’s fully equipped ASME qualified fabrication facility
stands ready to assist you with all your fabrication needs. Our engineering
staff specializes in the design of pressure motive condensate pumping
systems for both industrial and institutional applications. We offer either
standard packages, or specialized systems to meet your specific needs.
110-111
Electric Condensate Pumps
Models W4100 & W4200
112-115
Electric condensate pumps are available for condensate temperatures up
to 190˚F. Carbon Steel and Cast Iron Tanks available. Available options include
receivers, NEMA control panels, mechanical and electrical alternators,
magnetic starters, gauge glasses, and more.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
75
Pumps NON-ELECTRIC CONDENSATE PUMPS
PUMPS
Why use a Pressure Motive Pump (PMP)?
The primary function of the non-electric PMPs is to return condensate back to the boiler. They are an excellent
alternative to standard electric pumps that are prone to seal failure when pumping hot condensate in excess of
195˚ F. They also significantly improve the performance and efficiency of heat exchangers by helping to drain
condensate from the heat exchanger during system stall conditions.
Information Required for Proper Selection and Sizing of Pressure Motive Pump (PMP) Systems
Although Pressure Motive Pumps can be supplied as stand-alone units, the vast majority of industrial condensate
transfer applications require a complete system of components to function both properly and efficiently. This section
is intended to familiarize the user with the information and components required to provide an efficient system.
Considerations for PMP System Sizing and Selection
1) Is a PMP required for the situation? Is there sufficient line pressure for adequate transfer of condensate,
or is a PMP required to overcome lift and/or condensate return line pressure?
2) Should you choose a Stand-alone pump or Pump with Receiver Tank (PMP System)? The vast majority of pump
applications require some type of receiver or reservoir upstream of the unit for several possible reasons:
• To allow proper operation of the PMP by providing adequate liquid head above
the PMP (Fill Height). Liquid fill head is required to ensure gravity drainage of
condensate so that the PMP tank may fill completely on each cycle.
• To enable the condensate to collect while the pump is in the discharge cycle
(i.e. not filling), thus preventing liquid backup into the equipment being drained.
• In an open loop system, a vented receiver must accommodate both high
pressure/temperature condensate as well as the flash steam generated from
that condensate. Sizing of both the receiver and vent connection are critical
to proper function of the system.
3) Application – OPEN LOOP (Vented Receiver) or CLOSED LOOP (Pressurized Reservoir)?
ATMOSPHERIC
VENT
INLET FOR MULTIPLE
CONDENSATE SOURCES
OPEN LOOP (Vented Receiver)
MOTIVE STEAM OR
AIR SUPPLY
PUMP EXHAUST
ALTERNATE
CONDENSATE
INLET
VENTED
RECEIVER
12” SEAL
ON
OVERFLOW
RETURN
LINE
PRESSURE
FILLING
HEAD
12” Preferred
6” Min.
This PMP System is intended for the
drainage of multiple condensate sources.
For these applications, a vented receiver
will be required for the equalization of the
various pressure sources. The flash steam
generated by the hot condensate in the
receiver tank can be used for supplementing other low pressure steam
systems or vented to atmosphere.
LIFT (ft.)
WD 600
TRAP
PRESSURE
MOTIVE
PUMP
76
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Pumps NON-ELECTRIC CONDENSATE PUMPS
CLOSED LOOP (Pressurized Reservoir)
STALL CONDITION WITH MODULATED STEAM FLOW
PUMPS
When a modulating valve is used to control product temperature in heat transfer equipment, the valve will open
and close as necessary to meet the variable demand of the system to maintain the product at constant temperature
(Figure 1). Therefore, when maximum heating is required, the supply valve will be fully open to satisfy the high steam
demand requirement. At this point, pressure is also being supplied at its highest level, which may be sufficient to
overcome total system back pressure.
As the product temperature is satisfied, demand decreases and the valve correspondingly begins to close reducing
pressure differential. If demand is satisfied, the valve modulates to its fully closed position. Inlet supply pressure will
eventually fall below system back pressure, resulting in system stall. This leads to poor heat transfer and water hammer as
condensate backs up in the heat transfer equipment. To prevent this situation, a pressure motive pump (PMP) and steam
trap is added to the system (Figure 2). Any condensate forming inside the heat transfer equipment will drain by
gravity into the pump tank. The condensate will accumulate in the pump tank until the float mechanism reaches
its trip point. The “tripping” of the mechanism opens the motive valve to allow high pressure steam into the tank to
drive the condensate from the tank to the condensate return line.
Figure 2
Figure 1
STEAM CONTROL
VALVE
STEAM
STEAM CONTROL
VALVE
STEAM
AIR
VENT
VACUUM
BREAKER
CONDENSATE
RETURN
STEAM
HEAT
EXCHANGER
CONDENSATE
RETURN LINE
HOT
OUTLET
HEAT EXCHANGER
COLD
INLET
HOT
OUTLET
COLD
INLET
VACUUM
BREAKER
AIR
VENT
LIFT
RESERVOIR
FILLING HEAD
VENT
STEAM
INLET
THERMODYNAMIC
DISC TRAP
F&T
TRAP
PRESSURE
MOTIVE
PUMP
INLET
CHECK VALVE
Heat Exchanger System
without PMP
F&T
TRAP
OUTLET
CHECK VALVE
Heat Exchanger System with PMP & Separate Trap
(Closed Loop System)
-
4) Height or spatial limitations – Is the equipment to be drained low to the ground or are there other size limitations?
It is important that minimum fill head requirements are met to ensure proper operation of the PMP. In addition,
changes in fill head will affect capacity.
5) Standard Simplex/Duplex/Triplex/Quadraplex or Custom System – This is generally dictated by sizing requirements
and application parameters, but a cost-effective standard system should be selected when possible. Custom
fabricated systems are designed to meet a wide variety of specific application requirements. Note: The sizing of
the receiver and vent connection on standard systems must be specified per the application parameters.
6) Back pressure – For proper sizing and selection of a PMP system, the total back pressure of the system must be known.
The total back pressure generally consists of:
• The vertical height the condensate must be raised (Every 1 foot of vertical lift equals 0.433 PSI pressure.)
• Any line pressure in the condensate return piping
7) Motive Gas and Pressure – Is the gas (steam, air, other) appropriate for the application and is the available pressure
sufficient to provide the necessary flow against the total back pressure? (For closed loop systems, only steam is
appropriate as a motive.)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
77
NON-ELECTRIC CONDENSATE PUMPS
PMP Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PUMPS
Pressure Motive Pumps
T Y P I C A L A P P L I C AT I O N S
The Watson McDaniel PMP Series of Pressure Motive Pumps
are designed to transfer hot condensate (as well as other liquids)
without the use of electrical energy. The primary application
for the PMP is pumping condensate from a process application
or condensate collection area back to the condensate return
system.
Hot Condensate The mechanical seals in standard electric
Several choices of pump body materials, types and
configurations are available to meet specific customer
applications:
Ductile Iron Tanks Ductile Iron is far superior to cast iron in
handling higher pressures and temperatures. Ductile iron is also
extremely corrosion resistant to condensate and water and
can last in excess of 50 years before tank replacement is required.
Our ductile iron tanks can be ASME coded on request.
condensate return pumps begin to have difficulty when handling
condensate in excess of 195˚ F. Seal failure is virtually
guaranteed when condensate temperatures reach 203˚ F due to
flashing of the condensate across the seal face. It is therefore
required to cool condensate in order to prevent seal failure prior
to pumping using electric pumps. PMPs do not have seals and
therefore will handle condensate well in excess of these
temperatures.
Fabricated Carbon Steel Carbon steel has a higher
pressure and temperature rating than ductile iron. Certain industrial
facilities such as chemical and petrochemical refineries request
carbon steel only. Our carbon steel tanks are standard ASME
coded.
T Y P I C A L C O N F I G U R AT I O N S
Low Profile Low profile tanks are often required when draining
STAND ALONE UNITS:
All stand alone units are furnished with pump tank, check valves:
and internal pumping mechanism.
• PMPC • PMPF • PMPSS • PMPLS • PMPM • PMPBP
PUMPS WITH RECEIVER TANKS:
One or more stand alone pump units connected to an
appropriately sized receiver tank mounted on a common base.
Additional pumping units can be used for increased capacity or
pump redundancy in case of failure.
Simplex: One Pumping unit with check valves and receiver
tank, mounted on frame and skid base.
Duplex: Two Pumping units with check valves and receiver
tank, mounted on frame and skid base.
Triplex: Three Pumping units with check valves and receiver
tank, mounted on frame and skid base.
Quadraplex: Four Pumping units with check valves and
receiver tank, mounted on frame and skid base.
PUMP & STEAM TRAP COMBINATIONS:
Stand alone pump combined with Internally or Externally
configured Steam Trap.
• PMPT
(Internal Steam Trap)
• WPT Series (External Steam Trap)
SUMP DRAINER:
Stand alone Sump Drainer with check valves is designed for
pumping water out of low lying areas or pits. Excellent solution
where there is no access to electricity.
• PMPSP
C U S T O M C O N F I G U R AT I O N S
Watson McDaniel’s fully-qualified fabrication facility is ASME
code certified. Our engineers can design and build complete
custom systems to meet all your requirements.
78
Fabricated Stainless Steel Stainless steel (304L) tanks are the
most corrosion resistant and can be used in extremely harsh
environments.
condensate from process equipment when positioned close to the
ground which limits filling head. Low profile units are available in
both fabricated steel and cast iron.
Sump Drainers Sump drainers are similar to the standard PMP
models except that they discharge the condensate vertically
upwards. This piping configuration allows them to easily fit
into below ground sump pits with limited space.
F E AT U R E S
• Seal-less – The PMP contains no seals. The weak point in
conventional electric pumps is seal failure due to flashing
hot condensate across the seal face.
• Non-Electric – Since no electricity is required they can be
used in remote locations or NEMA 4,7 & 9 hazardous areas.
Can operate using steam, air, nitrogen or other pressurized
gases as the motive force.
• Ductile-Iron – Pump tanks are standard in Ductile Iron
which is far superior to Cast Iron for pressure and
temperature rating and safety. Can be ASME coded and
can last in excess of fifty years prior to replacement.
• Carbon Steel – Pump tanks available in ASME coded
carbon steel.
• Stainless Steel – Pump tank options include 304L for
applications in harsh environments.
OPTIONS
• Pump cycle counter used for predicting maintenance intervals
as well as calculating the volume of condensate pumped.
• Insulation jackets are available to stop heat losses
through the pump body and provide personal protection.
• Sight glass for monitoring liquid level inside pump body.
• Customized systems – ASME code-certified fabrication facility
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
PMP Series
Pressure Motive Pumps
PUMPS
S TA N D A L O N E U N I T S
All stand alone units are furnished with pump tank, check valves and internal pumping mechanism.
PMPC
DUCTILE IRON
The Model PMPC pressure motive
pump body & cover are manufactured
from ductile iron. ASME “UM” code
stamp is available.
PMPSS
STAINLESS STEEL
The Model PMPSS pressure motive
pump body & cover are manufactured
from 304L stainless steel. These tanks
are designed to be used in harsh
corrosive environments and
receive the ASME “UM” code stamp.
PMPF CARBON STEEL HIGH-PRESSURE
The Model PMPF pressure motive pump
is designed for high pressure applications.
Pump body & cover are manufactured from
carbon steel and receive the ASME “UM”
code stamp.
PMPBP CARBON STEEL HIGH-CAPACITY
The PMPBP is an extremely high-capacity
pressure motive pump for applications
requiring large transfer of condensate or
other liquids. The internal operating
mechanism functions identically to other
pumps in the PMP series. ASME “U” code
stamp is available.
PMPM CAST IRON LOW PROFILE
PMPLS
The Model PMPM pressure motive
pump has an extremely
low profile. These low-profile tanks
are required when draining condensate
from process equipment positioned
close to the ground which limits the
filling head of the pump.
The Model PMPLS pressure motive pumps are
low profile. These tanks are often required when
draining condensate from process equipment
positioned close to the ground which limits the
filling head of the pump. Pump body & cover
are manufactured from carbon steel and receive
the ASME “UM” code stamp.
PUMP & TRAP COMBINATIONS
with Internal Steam Trap
with External Steam Trap
PMPT
WPT
The Model PMPT low-profile
pressure motive pump comes
with an Internal Steam Trap.
It is an excellent choice for
drainage of various modulating
process equipment. The
internal steam trap allows
condensate discharge under
all operating conditions of
modulating equipment,
including vacuum.
The WPT Series are stand
alone pump units with an
appropriately sized External
Steam Trap preassembled at
the factory and mounted on a
common base plate, allowing
for easy installation. Available
in several sizes and capacities.
Used when load requirement
exceeds that of the PMPT.
CARBON STEEL LOW PROFILE
PUMPS WITH
RECEIVER TANKS
SUMP DRAINER
PMPSP
Watson McDaniel manufactures
PMPs with receiver tanks. Pumps
are available in Ductile Iron, Cast
Iron or Fabricated Steel. Receiver
tank manufactured from Carbon
Steel. Available in Simplex,
Duplex, Triplex and Quadraplex.
The Model PMPSP sump
drainer body & cover are
manufactured from Carbon
Steel. The Model PMPSP
Sump Drainer is designed
for pumping out and
draining pits.
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www.watsonmcdaniel.com
79
NON-ELECTRIC CONDENSATE PUMPS
PMP Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Pressure Motive Pumps
PUMPS
Operation of PMP Pressure Motive Pump
VENT TO
ATMOSPHERE
PUMP
EXHAUST
PUMP MOTIVE
PRESSURE
VENT
OUTLET
(open)
RETURN LINE
PRESSURE
MOTIVE
INLET
(closed)
CONDENSATE
VENTED
RECEIVER
DRIP TRAP
MOTIVE
GAS
INLET
FILLING HEAD
VENT
RETURN LINE
LIFT PRESSURE
IN PSI
(FEET X 0.433)
Open
Closed
TO DRAIN
OR VENT
PUMP
INLET
CHECK VALVE
INLET
OUTLET
OPEN
CLOSED
FLOW
OUTLET
CHECK VALVE
1 Condensate flows from the receiver tank thru the inlet check valve and fills
the pump tank. During the filling cycle the float inside the tank rises.
VENT TO
ATMOSPHERE
PUMP
EXHAUST
PUMP MOTIVE
PRESSURE
VENT
OUTLET
(closed)
RETURN LINE
PRESSURE
CONDENSATE
MOTIVE
INLET
(open)
VENTED
RECEIVER
DRIP TRAP
MOTIVE
GAS
INLET
FILLING HEAD
VENT
RETURN LINE
LIFT PRESSURE
IN PSI
(FEET X 0.433)
Closed
Open
INLET
OUTLET
CLOSED
OPEN
TO DRAIN
OR VENT
FLOW
PUMP
INLET
CHECK VALVE
OUTLET
CHECK VALVE
2 When the pump tank has filled to the trip point, the mechanism triggers,
opening the motive gas inlet valve and simultaneously closing the vent valve.
This allows motive pressure to enter the pump body, which drives the condensate
thru the outlet check valve into the condensate return line. During the discharge
cycle, the liquid level and the float inside the pump tank drop.
VENT TO
ATMOSPHERE
PUMP
EXHAUST
PUMP MOTIVE
PRESSURE
RETURN LINE
PRESSURE
CONDENSATE
MOTIVE
INLET
(closed)
VENTED
RECEIVER
DRIP TRAP
FILLING HEAD
VENT
MOTIVE
GAS
INLET
PUMP
INLET
CHECK VALVE
RETURN LINE
Open
Closed
LIFT PRESSURE
IN PSI
(FEET X 0.433)
TO DRAIN
OR VENT
80
VENT
OUTLET
(open)
OUTLET
CHECK VALVE
INLET
OUTLET
OPEN
CLOSED
FLOW
3 At the lower trip point, the mechanism triggers and the motive gas inlet valve to the
pump tank closes and simultaneously the vent valve opens. The fill and discharge
cycle then repeats itself.
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www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
PMP Series
Pressure Motive Pump Internal Mechanism
1” NPT
OUTLET
VENT
PUMPS
1/2” NPT
INLET
ALL STAINLESS
STEEL
INTERNALS
COVER
Patented
SNAP-ASSURE™
Feature
INLET AND VENT VALVES
Made from heat-treated
17-4 stainless steel; adds
durability for extended life.
Guaranteed to
extend pump life
even in the most
demanding
applications.
INCONEL-X-750
DUAL COMPRESSION SPRINGS
Designed to minimize
stresses and last indefinitely.
PINS AND
WEAR POINTS
Pivot pins and wear
points are made
from heat-treated
stainless steel with a
heavy layer of hard
chrome plating.
SUPPORT
BRACKET
FLOAT
I N T E R N A L M E C H A N I S M F E AT U R E S
• Equipped with our Patented “Snap-Assure” feature, found only
on Watson McDaniel’s mechanisms. “Snap-Assure” extends the
useful life of the pump by assuring that the internal toggle
action triggers at every fill and discharge cycle
• All Stainless Steel components eliminate corrosion and rusting
• Hard chrome-plated pivot pins and wear points substantially
reduce the rate of wear on critical components
• 17-4 heat-treated stainless steel inlet and vent valve (Hardened
seats have proven themselves to last years longer in service)
• Dual compression springs made from Inconel-X-750 minimize
stress and corrosion and are designed to last indefinitely
• Precision manufactured mechanisms never require
field adjustments
• Watson McDaniel “Snap-Assure” mechanisms can be purchased
separately and will fit other manufacturers’ pump tanks
I N T E R N A L M E C H A N I S M M AT E R I A L S
Cover
Cover Gasket
Cover Bolts
Inlet Valve
Vent Valve
Mechanism Yoke
Ball Float
Springs
Other Internal Parts
Material for cover same as tank material
Garlock / Grafoil
Grade B5
Hardened Stainless Steel, Rc 40
Hardened Stainless Steel, Rc 40
304 Stainless Steel
Stainless Steel
Inconel-X-750
Stainless Steel
Snap-Assure Patent No. 6572340
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
81
NON-ELECTRIC CONDENSATE PUMPS
PMPC
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
CAST DUCTILE IRON TANK
PUMPS
Pressure Motive Pump
Model
Body
Cover
Check Valves
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
PMPC
Ductile Iron
Ductile Iron
Stainless Steel
200 PSIG
388ºF
200 PSIG @ 650˚F
650ºF @ 200 PSIG
Note: ASME “UM” code stamp available.
T Y P I C A L A P P L I C AT I O N S
The PMPC pressure motive pump body & cover are
manufactured from ductile iron. ASME “UM” code stamp is
available. This pump is typically used when liquids
must be moved to higher elevation, higher pressure
or extended distances.
F E AT U R E S
• Equipped with our Patented “Snap-Assure” Mechanism
which extends the useful life of the pump
• Mechanism incorporates heat-treated stainless steel
wear items
• All stainless steel internals for ultimate corrosion resistance
• Dual compression springs made from Inconel-X-750 for
high-temperature corrosive service
• Operates using steam, air, nitrogen or other pressurized
gases as the motive force
• Non-Electric – can be used in remote locations or
NEMA 4, 7, 9 & hazardous areas
S A M P L E S P E C I F I C AT I O N
The non-electric pressure powered pump shall be capable of operating
with a maximum motive pressure of 200 PSIG provided by steam, air
or other gas supply. The pump body shall be cast ASTM A-395 Ductile
Iron capable of an ASME “UM” code stamp if requested. The pump
mechanism shall be float operated with a patented “Snap-Assure”
feature constructed of all stainless steel materials with all load bearing
points hardened for extended service life. The mechanism shall feature
two Inconel springs used in compression with motive & vent valves
hardened to 40c Rockwell.
82
DIMENSIONS –
inches / pounds
Size (Inlet x Outlet)
A
B
C
Weight (lbs)
1” x 1”
11/2” x 1”
11/2” x 11/2”
291/2
303/4
311/4
6
71/2
71/2
6
6
71/2
360
365
367
2” x 1”
31
8
6
370
2” x 11/2”
2” x 2”
3” x 2”
321/2
323/4
351/4
8
8
91/4
71/2
8
8
380
385
390
M AT E R I A L S
Body & Cover
Cover Gasket
Cover Bolts
Inlet Valve
Vent Valve
Mechanism Yoke
Ball Float
Check Valves
Springs
Other Internal Components
Ductile Iron
Grafoil
Steel
Hardened Stainless Steel 40 Rc
Hardened Stainless Steel 40 Rc
304 Stainless Steel
304 Stainless Steel
Stainless Steel
Inconel-X-750
Stainless Steel
Snap-Assure Patent No. 6572340
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
PMPF
FABRICATED STEEL TANK
Pressure Motive Pump
PUMPS
Model
Body
Cover
Check Valves
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
PMPF
Carbon Steel
Carbon Steel
Stainless Steel
200 PSIG
388ºF
250 PSIG @ 650˚F
T Y P I C A L A P P L I C AT I O N S
The PMPF pressure motive pump body & cover are manufactured
from carbon steel. These tanks are fabricated with 1/8” corrosion
allowance and receive the ASME “UM” code stamp. This pump
is typically used when liquids must be moved to higher elevation,
higher pressure or extended distances.
F E AT U R E S
• Equipped with our Patented “Snap-Assure” Mechanism
which extends the useful life of the pump
• Mechanism incorporates heat-treated stainless steel
wear items
• All stainless steel internals for ultimate corrosion resistance
• Dual compression springs made from Inconel-X-750 for
high-temperature corrosive service
• Operates using steam, air, nitrogen or other pressurized
gases as the motive force
• Non-Electric – can be used in remote locations or
NEMA 4, 7, 9 & hazardous areas
S A M P L E S P E C I F I C AT I O N
The non-electric pressure powered pump shall be capable of operating
with a maximum motive pressure of 200 PSIG provided by steam, air or
other gas supply. The pump body shall be fabricated carbon steel and
certified with the ASME “UM” code stamp. The pump mechanism shall
be float operated with a patented “Snap-Assure” feature constructed of
all stainless steel materials with all load bearing points hardened for
extended service life. The mechanism shall feature two Inconel springs
used in compression with motive & vent valves hardened to
40c Rockwell.
DIMENSIONS –
inches / pounds
Size (Inlet x Outlet)
A
B
C
Weight (lbs)
1” x 1”
11/2” x 1”
11/2” x 11/2”
301/2
6
71/2
71/2
6
71/2
6
215
220
223
313/4
321/4
2” x 1”
32
8
6
225
2” x 11/2”
331/2
8
2” x 2”
3” x 2”
333/4
351/4
8
91/4
71/2
8
230
235
8
240
M AT E R I A L S
Body & Cover
Cover Gasket
Cover Bolts
Inlet Valve
Vent Valve
Mechanism Yoke
Ball Float
Check Valves
Springs
Other Internal Components
Carbon Steel
Grafoil
Steel
Hardened Stainless Steel 40 Rc
Hardened Stainless Steel 40 Rc
304 Stainless Steel
304 Stainless Steel
Stainless Steel
Inconel-X-750
Stainless Steel
Snap-Assure Patent No. 6572340
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
83
NON-ELECTRIC CONDENSATE PUMPS
PMPSS
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
STAINLESS STEEL TANK
PUMPS
Pressure Motive Pump
Model
Body
Cover
Check Valves
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
PMPSS
304L Stainless Steel *
Carbon Steel
Stainless Steel
150 PSIG
366 ºF
150 PSIG @ 650˚F
* For special 316L SS, consult factory.
T Y P I C A L A P P L I C AT I O N S
The PMPSS pressure motive pump body & cover are
manufactured from 304L Stainless Steel. These pumps receive
the ASME “UM” code stamp. This pump is designed to be
used in harsh and corrosive environments.
F E AT U R E S
• Equipped with our Patented “Snap-Assure” Mechanism
which extends the useful life of the pump
• Mechanism incorporates heat-treated stainless steel
wear items
• All stainless steel internals for ultimate corrosion resistance
• Dual compression springs made from Inconel-X-750 for
high-temperature corrosive service
• Operates using steam, air, nitrogen or other pressurized
gases as the motive force
• Non-Electric – can be used in remote locations or
NEMA 4, 7, 9 & hazardous areas
S A M P L E S P E C I F I C AT I O N
The non-electric pressure powered pump shall be capable of operating
with a maximum motive pressure of 150 PSIG provided by steam, air or
other gas supply. The pump body shall be 304L Stainless Steel and
certified with the ASME “UM” code stamp. The pump mechanism shall
be float operated with a patented “Snap-Assure” feature constructed of
all stainless steel materials with all load bearing points hardened for
extended service life. The mechanism shall feature two Inconel springs
used in compression with motive & vent valves hardened to
40c Rockwell.
84
DIMENSIONS –
inches / pounds
Size (Inlet x Outlet)
A
B
C
Weight (lbs)
1” x 1”
11/2” x 1”
11/2” x 11/2”
301/2
6
71/2
71/2
6
71/2
6
215
220
223
313/4
321/4
2” x 1”
32
8
6
225
2” x 11/2”
2” x 2”
3” x 2”
331/2
333/4
351/4
8
8
91/4
71/2
8
8
230
235
240
M AT E R I A L S
Body & Cover
Cover Gasket
Cover Bolts
Inlet Valve
Vent Valve
Mechanism Yoke
Ball Float
Check Valves
Springs
Other Internal Components
304L Stainless Steel
Grafoil
Steel
Hardened Stainless Steel 40 Rc
Hardened Stainless Steel 40 Rc
304 Stainless Steel
304 Stainless Steel
Stainless Steel
Inconel-X-750
Stainless Steel
Snap-Assure Patent No. 6572340
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
CARBON STEEL LOW-PROFILE TANK
PMPLS
Pressure Motive Pump
PUMPS
Model
Body
Cover
Check Valves
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
PMPLS
Carbon Steel
Carbon Steel
Stainless Steel
150 PSIG
366ºF
150 PSIG @ 650˚F
Note: Optional 200 PSIG PMA/PMO. Consult Factory.
T Y P I C A L A P P L I C AT I O N S
The PMPLS pressure motive pump is a lower profile than the
standard PMPF model and is sometimes required when draining
condensate from process equipment that is positioned close to the
ground which limits the filling head of the pump. Pump & body
cover are manufactured from carbon steel and receive the
ASME “UM” code stamp.
F E AT U R E S
DIMENSIONS –
inches / pounds
Size (Inlet x Outlet)
A
B
C
Weight (lbs)
1” x 1”
11/2” x 1”
11/2” x 11/2”
291/2
55/8
55/8
303/4
321/8
7
7
55/8
7
200
205
210
• Equipped with our Patented “Snap-Assure” Mechanism
which extends the useful life of the pump
• Mechanism incorporates heat-treated stainless steel
wear items
• All stainless steel internals for ultimate corrosion resistance
• Dual compression springs made from Inconel-X-750 for
high-temperature corrosive service
• Operates using steam, air, nitrogen or other pressurized
gases as the motive force
• Non-Electric – can be used in remote locations or
NEMA 4, 7, 9 & hazardous areas
S A M P L E S P E C I F I C AT I O N
The non-electric pressure powered pump shall be capable of operating
with a maximum motive pressure of 150 PSIG provided by steam, air or
other gas supply. The pump body shall be fabricated carbon steel and
certified with the ASME “UM” code stamp. The pump mechanism shall
be float operated with a patented “Snap-Assure” feature constructed of
all stainless steel materials with all load bearing points hardened for
extended service life. The mechanism shall feature two Inconel springs
used in compression with motive & vent valves hardened to
40c Rockwell.
M AT E R I A L S
Body & Cover
Cover Gasket
Cover Bolts
Inlet Valve
Vent Valve
Mechanism Yoke
Ball Float
Check Valves
Springs
Other Internal Components
Carbon Steel
Grafoil
Steel
Hardened Stainless Steel 40 Rc
Hardened Stainless Steel 40 Rc
304 Stainless Steel
304 Stainless Steel
Stainless Steel
Inconel-X-750
Stainless Steel
Snap-Assure Patent No. 6572340
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
85
NON-ELECTRIC CONDENSATE PUMPS
PMPM
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
CAST IRON MINI-PUMP
PUMPS
Pressure Motive Pump
Model
Body
Cover
Sizes
Check Valves
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
PMPM
Cast Iron
Cast Iron
1”, 11/4”
Stainless Steel
150 PSIG
366ºF
150 PSIG @ 450˚F
T Y P I C A L A P P L I C AT I O N S
The Model PMPM pressure motive pump has an extremely
low profile. These low-profile tanks are required when draining
condensate from process equipment positioned close to the
ground which limits the filling head of the pump.
F E AT U R E S
• Mechanism incorporates heat-treated stainless steel
wear items for extended service life
• All stainless steel internals for ultimate corrosion resistance
• Dual springs made from Inconel-X-750 for
high-temperature corrosive service
• Operates using steam, air, nitrogen or other pressurized
gases as the motive force
• Low-profile design
• Non-Electric – can be used in remote locations or
C A PA C I T I E S – Condensate (lbs/hr)
Motive
Pressure
(PSIG)
Back
Pressure
(PSIG)
25
25
50
50
50
50
75
75
75
100
100
100
100
150
150
150
15
5
40
25
15
5
60
40
25
60
40
25
15
100
80
60
6” Filling Head
Steam Motive
Air Motive
1”
11/4”
1”
11/4”
1200
1970
1200
1480
1860
2240
1160
1640
1960
1415
1825
1985
2175
1120
1220
1570
1800
2955
1800
2220
2790
3360
1740
2460
2960
2122
2732
2977
3262
1680
1830
2355
1720
2265
1640
1980
2220
2485
1935
2185
2340
2020
2280
2420
2455
1456
1525
1885
2580
3398
2460
2970
3330
3728
2903
3278
3510
3030
3420
3630
3683
2184
2288
2828
NEMA 4, 7, 9 & hazardous areas
SIZING
M AT E R I A L S
Body & Cover
Cover Gasket
Cover Bolts
Inlet Valve
Vent Valve
Mechanism Yoke
Ball Float
Check Valves
Springs
Other Internal Components
86
Cast Iron
Garlock
Steel
Hardened Stainless Steel 40 Rc
Hardened Stainless Steel 40 Rc
304 Stainless Steel
304 Stainless Steel
Stainless Steel
Inconel-X-750
Stainless Steel
The capacity of the PMPM is based on the inlet steam pressure,
the system back pressure, and the amount of filling head
available. The trap used in a pump-trap combination must
be sized to handle the instantaneous discharge of the pump.
Choose a F&T trap that will pass the condensate load at a 1/4
PSI differential pressure. The PMO of the steam trap must be
higher than the motive inlet steam pressure. Consult factory for
proper choice of steam trap.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
CARBON STEEL HIGH-CAPACITY TANK
PMPBP
Pressure Motive Pump
PUMPS
Model
Body
Cover
Check Valves
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
PMPBP
Carbon Steel
Carbon Steel
Stainless Steel & Steel
150 PSIG
366ºF
150 PSIG @ 470˚F
T Y P I C A L A P P L I C AT I O N S
The PMPBP is an extremely high-capacity pressure motive
pump for applications requiring large transfer of condensate or
other liquids. The internal operating mechanism functions
identically to other pumps in the PMP series. ASME “U” code
stamp is available.
M AT E R I A L S
Body & Cover
Cover Gasket
Cover Bolts
Inlet Valve
Vent Valve
Mechanism Yoke
Ball Float
Check Valves
Springs
Other Internal Components
Carbon Steel
Non-Asbestos
Steel
Stainless Steel
Stainless Steel
304 Stainless Steel
304 Stainless Steel
Stainless Steel & Steel
Stainless Steel
Stainless Steel
OPTIONS
• Cycle counter for measuring the amount of condensate flow
through the pump.
F E AT U R E S
• All stainless steel internals for ultimate corrosion resistance
• Operates using steam, air, nitrogen or other pressurized
•
Insulation jackets are available to stop heat losses through
the pump body.
•
Sight glass for monitoring liquid level inside pump body.
gases as the motive force
• Non-Electric – can be used in remote locations or
NEMA 4, 7, 9 & hazardous areas
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
87
NON-ELECTRIC CONDENSATE PUMPS
PMPSP “The Pit Boss”
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PUMPS
Sump Drainer
Model
Body
Cover
Check Valves
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
PMPSP
Carbon Steel
Ductile Iron
Stainless Steel
150 PSIG
366ºF
150 PSIG @ 650˚F
Connection Sizes
NPT
Inlet
Outlet
1
1 /2” x
11/2”
2”
x
2”
3”
x
2”
OUTLET
Stainless Steel
Check Valve
T Y P I C A L A P P L I C AT I O N S
The PMPSP Sump Drainer uses the identical internal mechanism as the standard
PMP models. The piping configuration is such that the liquid is discharged vertically
upwards as opposed to horizontally out the side. This allows the unit to be easily
positioned inside of a sump area. Condensate or water from the sump enters the
tank through a stainless steel low resistance check valve.
INLET
Stainless Steel
Check Valve
F E AT U R E S
• Equipped with our Patented “Snap-Assure” Mechanism which
extends the useful life of the pump
• Mechanism incorporates heat-treated stainless steel wear items
• All stainless steel internals for ultimate corrosion resistance
• Dual compression springs made from Inconel-X-750 for
high-temperature corrosive service
• Operates using steam, air, nitrogen or other pressurized gases as the
motive force
• Non-Electric – can be used in remote locations or NEMA 4, 7, 9
& hazardous areas
• Built-in strainer screen
88
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
PMPSP
Sump Drainer
PUMPS
“The Pit Boss”
MOTIVE STEAM
or AIR
DISCHARGE LINE
VENT
DISC TRAP
PMPSP
SUMP
DRAINER
SCREENED INLET
Water enters the inlet check valve thru a
screened area at bottom of pump. After
the pump fills, the internal mechanism is
actuated and the pump is discharged by
the motive steam or compressed air.
Other compressed gases such as
nitrogen can also be used.
18”
MINIMUM
DIAMETER
C A PA C I T I E S – Water (GPM) for 11/2” x 11/2” Size
Motive
Pressure
(PSIG)
Capacity
Correction Factors
2” x 2” 3” x 2”
Back Pressure (PSIG)
0
10
20
40
10
20
40
70
100
2.5
1.8
1.9
1.7
1.6
3
2.4
2.4
2.4
2
11.7
12.5
13.1
12.9
12.3
70
9.2
10.4
11.0
10.6
8.7
9.4
9.4
7.1
7.5
5.4
125
150
1.6
1.6
2
2
11.6
10.7
10.1
9.5
.9.0
8.8
7.5
7.2
5.6
5.7
100
4.3
4.5
Note: Capacities in above chart are for the 1-1/2” x 1-1/2” model. To determine capacities for the
2” x 2” & 3” x 2” models, multiply capacity in chart by appropriate correction factor.
Snap-Assure Patent No. 6572340
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
89
NON-ELECTRIC CONDENSATE PUMPS
Pumps with Receiver Tanks
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2002 Watson McDaniel Company
PUMPS
Pressure Motive Pumps
Standard Skid Mounted Systems
F E AT U R E S
SIMPLEX SYSTEMS – Models PMPC & PMPF
• Easy to install with only four
connections to be made in the field
• Dramatically reduces installation
costs with all system elements
pre-piped
• Utilizing Watson McDaniel’s years of
experience will ensure that vented
receivers or pressurized reservoirs
are properly sized for optimum
system performance
• Watson McDaniel’s fully-qualified
fabrication facility is ASME code
certified. Our engineers can design
and build complete custom systems
to meet all your requirements
30.0
NOTES:
1. SIZING DEPENDS ON CONDENSATE LOAD,
INLET MOTIVE PRESSURE & FILLING HEAD.
2. THE SIZING OF THE RECEIVER AND VENT
CONNECTION IS BASED ON APPLICATION
PARAMETERS WHEN USED AS OPEN LOOP
(VENTED) SYSTEM.
VENT 4” 150#
RF FLANGE
40.0
CONNECTS TO
PUMP EXHAUST
11/2” NPT
VENT
21 GAL.
RECEIVER
AUXILIARY
INLET, 2” NPT
GAUGE GLASS
1/2” NPT
CONDENSATE
INLET 3” NPT
RECEIVER
PUMP EXHAUST 1” NPT
MOTIVE STEAM INLET
1/2” NPT
TYPICAL OPTIONS
CONDENSATE
OUTLET
• Gauge glass assembly
• Cycle counter
• Insulation covers
• Motive steam drip trap
• Overflow pipe connection
• Pressure regulator for motive
62.6
DRAIN
1” NPT
55.6
27.75 PMPC
32.00 PMPF
PMPC
or
PMPF
7.5 PMPC
12 PMPF
supply line
DUPLEX SYSTEMS – Models PMPC & PMPF
NOTES:
1. SIZING DEPENDS ON CONDENSATE LOAD,
INLET MOTIVE PRESSURE & FILLING HEAD.
2. THE SIZING OF THE RECEIVER AND VENT
CONNECTION IS BASED ON APPLICATION
PARAMETERS WHEN USED AS OPEN LOOP
(VENTED) SYSTEM.
40.0
44.0
VENT 6” 150#
FLANGE
48 GAL.
RECEIVER
CONNECTS TO
PUMP EXHAUST
11/2” NPT
AUXILIARY
INLET 3” NPT
CONDENSATE
INLET 3” NPT
PUMP EXHAUST
1” NPT
GAUGE GLASS
1/2” NPT
RECEIVER
MOTIVE STEAM INLET
1/2” NPT
CONDENSATE
OUTLET
68.0
59.0
27.75 PMPC
32.00 PMPF
7.5 PMPC
12 PMPF
90
INSPECTION
OPENING
2” NPT
PMPC
or
PMPF
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
DRAIN
1” NPT
NON-ELECTRIC CONDENSATE PUMPS
Pumps with Receiver Tanks
Pressure Motive Pumps
PUMPS
TRIPLEX SYSTEMS – Models PMPC & PMPF
NOTES:
1. SIZING DEPENDS ON CONDENSATE LOAD,
INLET MOTIVE PRESSURE & FILLING HEAD.
2. THE SIZING OF THE RECEIVER AND VENT
CONNECTION IS BASED ON APPLICATION
PARAMETERS WHEN USED AS OPEN LOOP
(VENTED) SYSTEM.
75 GAL.
RECEIVER
40
64
VENT 6”
150#
FLANGE
CONNECTS TO
PUMP EXHAUST
11/2” NPT
11/2” NPT
AUXILIARY
INLET,
4” 150# FLG
CONDENSATE
INLET 3” NPT
PUMP EXHAUST
1” NPT
RECEIVER
MOTIVE STEAM INLET
1/2” NPT
GAUGE GLASS
1/2” NPT
INSPECTION
OPENING
2” NPT
68.4
CONDENSATE
OUTLET
59.0
DRAIN
1” NPT
27.75” PMPC
32.00” PMPF
7.5” PMPC
12” PMPF
PMPC
or
PMPF
QUADRAPLEX SYSTEMS – Models PMPC & PMPF
64.0
NOTES:
1. SIZING DEPENDS ON CONDENSATE LOAD,
INLET MOTIVE PRESSURE & FILLING HEAD.
2. THE SIZING OF THE RECEIVER AND VENT
CONNECTION IS BASED ON APPLICATION
PARAMETERS WHEN USED AS OPEN LOOP
(VENTED) SYSTEM.
60.0
VENT
8” 150#
FLANGE
116 GAL.
RECEIVER
CONNECTS TO
PUMP EXHAUST
11/2” NPT
AUXILIARY
INLET,
4” 150# FLG
CONDENSATE
INLET 3” NPT
PUMP EXHAUST
1” NPT
RECEIVER
MOTIVE STEAM INLET
1/2” NPT
GAUGE GLASS
1/2” NPT
INSPECTION
OPENING
2” NPT
72.5
CONDENSATE
OUTLET
27.75 PMPC
32.00 PMPF
11/2” NPT
63.0
DRAIN
1” NPT
PMPC
or
PMPF
7.5 PMPC
12 PMPF
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
91
PUMPS
NON-ELECTRIC CONDENSATE PUMPS
Pump & Trap
Combinations
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Why use a Pump-Trap?
A Pump-Trap Combination is used when draining condensate from a single piece of heat
transfer equipment whose steam flow is being controlled with a modulating type valve. When
a modulating valve controls the flow of steam to a heat exchanger, a stall condition can develop.
Stall occurs when the modulating valve closes and steam pressure downstream of the valve
is unable to push the condensate into the return line and it backs up into the heat exchanger.
A Pump-Trap combination will eliminate this problem.
Pump-Traps with either Internal or External Steam Trap designs are available
to suit individual application requirements.
Pump with Internal Steam Trap
Pump with External Steam Trap
PMPT
WPT
The Model PMPT low-profile pressure motive pump
has an internal Steam Trap for applications requiring
compact design due to spatial constraints. It is an
excellent choice for drainage of various modulating
process equipment.
The WPT Series are stand-alone pump units with an
appropriately sized Steam Trap preassembled at the factory
and mounted on a common base plate, allowing for simple
installation. Pump-trap combos with an external trap are
suitable when capacity requirements exceed internal steam
trap designs. Available in several sizes and capacities.
The Pump-Trap Combination allows condensate discharge under all operating conditions
of modulating equipment, including vacuum.
92
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
PMPT & WPT
Pressure Motive Pump & Trap Combinations
PUMPS
Problem:
Stalled Heat Exchanger
DESCRIPTION:
STALL CONDITION WITH MODULATED
STEAM FLOW
STEAM CONTROL
VALVE
When a modulating valve is used to control product
temperature in heat transfer equipment, the valve will
open and close as necessary to meet the variable
demand of the system to maintain the product at
constant temperature. Therefore, when maximum
heating is required, the supply valve will be fully
open to satisfy the high steam demand requirement.
At this point, pressure is also being supplied at its
highest level, which may be sufficient to overcome
total system back pressure.
CONDENSATE
RETURN LINE
HEAT EXCHANGER
HOT
OUTLET
COLD
INLET
As the product temperature is satisfied, demand
decreases and the valve correspondingly begins
to close, reducing pressure differential. If demand
is satisfied, the valve modulates to its fully closed
position. Inlet supply pressure will eventually fall
below system back pressure, resulting in system
stall. This leads to poor heat transfer and water
hammer as condensate backs up in the heat
transfer equipment.
Solution:
VACUUM
BREAKER
AIR
VENT
STEAM
F&T
TRAP
Heat Exchanger System
without PMP
Use PMP & Steam Trap Combination
DESCRIPTION:
USE A PRESSURE MOTIVE PUMP
AND STEAM TRAP COMBINATION
(Available in INTERNAL and EXTERNAL
Steam Trap designs)
When the supply valve is fully open and
inlet pressure exceeds back pressure,
condensate forming in the heat transfer
equipment will be pushed through the pump
and steam trap into the condensate return
line. As the supply valve begins to close
and the back pressure exceeds inlet
pressure, any condensate forming inside the
heat transfer equipment will drain by gravity
into the pump tank. The condensate will
accumulate in the pump tank until the float
mechanism reaches its trip point. The
“tripping” of the mechanism opens the
motive valve to allow high pressure steam
into the tank to drive the condensate from
the tank to the condensate return line.
Note: A larger steam trap than normally
required to drain the heat transfer equipment
must be used to handle the high instantaneous discharge rate of the pump. See
additional information in this catalog for
sizing guidelines.
STEAM CONTROL
VALVE
AIR
VENT
VACUUM
BREAKER
STEAM
CONDENSATE
RETURN
STEAM
HEAT
EXCHANGER
HOT
OUTLET
COLD
INLET
LIFT
RESERVOIR
FILLING HEAD
VENT
STEAM
INLET
THERMODYNAMIC
DISC TRAP
PMPT
INLET
CHECK VALVE
PRESSURE
MOTIVE
PUMP/TRAP
COMBINATION
OUTLET
CHECK VALVE
Heat Exchanger System with PMP & Internal Trap (PMPT)
(Closed Loop System)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
93
NON-ELECTRIC CONDENSATE PUMPS
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PMPT
PUMPS
Pressure Motive Pump & Trap Combination (Internal Trap)
Model
Body
Cover
Sizes
Check Valves
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
PMPT
Ductile Iron
Stainless Steel
1”, 11/2”
Stainless Steel
125 PSIG
366ºF
150 PSIG @ 450˚F
T Y P I C A L A P P L I C AT I O N S
M AT E R I A L S
The Model PMPT low-profile pressure motive pump has an internal
Steam Trap for applications requiring compact design due to spatial
constraints. It is an excellent choice for drainage of various
modulating process equipment.
Body
Cover
Cover Gasket
Cover Bolts
Inlet Valve
Vent Valve
Ball Float
Check Valves
Springs
Other Internal Components
The PMPT allows condensate discharge under all operating
conditions of modulating equipment, including vacuum.
F E AT U R E S
• Compact, low-profile design allows for drainage of
equipment positioned close to the floor
• The PMPT provides provides condensate drainage for
modulating equipment, preventing inefficient and dangerous
system stall
• Equipped with our proven, Patented “Snap-Assure”
mechanism which extends the useful life of the pump
• Internal mechanism can be removed from the top of the
pump while pump remains piped in line
• Mechanism incorporates heat-treated stainless steel
wear items
• Dual compression springs made from Inconel-X-750 for
Ductile Iron SA-395
Stainless Steel CF8
Garlock
Steel
Hardened Stainless Steel 40 Rc
Hardened Stainless Steel 40 Rc
300 Stainless Steel
Stainless Steel 316SS CF3
Inconel-X-750
Stainless Steel
OPTIONS
• Horizontal pipe reservoir (recommended)
• Motive and vent piping
• Motive piping components such as steam trap,
strainer and regulator
• Packaged systems available with reservoir, base and skid
• ASME Code Stamp available upon request
high-temperature, corrosive service
Patent Pending
94
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
PMPT
Pressure Motive Pump & Trap Combination (Internal Trap)
Capacity Operating in Trap Mode
C A PA C I T I E S – Condensate (lbs/hr) Using steam as a motive pressure
Check Valve Size
Motive
Pressure
(PSIG)
Total Back
Pressure
(PSIG)
1” x 1”
6” Head
11/2” x 11/2”
6” Head
5
10
10
25
25
25
50
50
50
75
75
75
100
100
100
100
125
125
125
125
125
125
2
5
2
15
10
5
40
25
10
60
40
15
80
60
40
15
115
100
80
60
40
15
150
302
409
791
1020
1224
839
1012
1318
810
1122
1241
490
969
1209
1318
146
371
634
961
1054
1046
258
523
704
1380
1780
2110
1470
1770
2280
1420
1970
2150
859
1700
2100
2260
256
649
1110
1680
1830
1780
TRAP CAPACITIES
Differential
Pressure
(PSI)
Capacity Condensate
(lbs/hr)
5
10
20
30
3470
4126
4907
5430
40
50
65
75
100
125
5835
6170
6588
6828
7337
7758
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
95
PUMPS
Capacity Operating in Pump Mode
NON-ELECTRIC CONDENSATE PUMPS
WPT Series
WPT1 - 1” x 1” (PMPM with 11/2” FTE-200)
PUMPS
Pressure Motive Pump & Trap
Combination (External Trap)
1” FNPT INLET
VENT
1/2” FNPT
WPT Series Pump-Trap Combinations simplify
Selection & Installation of Pressure Motive Pumps
25”
• 5 size ranges available
• Up to 13,000 lbs/hr of condensate load
MOTIVE
1/2” FNPT
T Y P I C A L A P P L I C AT I O N S
The Watson McDaniel WPT Pump-Trap Combinations are excellent for draining
heat exchangers or other equipment that is being fed by a temperature regulator
or a temperature control valve. In these applications, the steam pressure in the
heat exchanger may not be sufficient to overcome the back pressure in the
condensate return line. When this condition occurs, the pressure powered pump
takes over and uses high pressure steam supplied to the pump to discharge the
condensate through the trap. When sufficient pressure does exist, the system
functions like a standard steam trap.
P U M P - T R A P F E AT U R E S
• Pump and Steam Trap are pre-mounted together on a single base
•
1” FNPT OUTLET
PMPM
11/2” FTE-200 TRAP
141/8”
4”
for easy installation
Engineering and selection is simplified
NOTE: Reservoir - The majority of Pump-Trap Combination applications require a
reservoir above the pump to accommodate any condensate back-up during
the discharge cycle of the pump. Consult Reservoir Sizing Guidelines or
contact factory for additional information.
28”
C A PA C I T I E S – Condensate (lbs/hr) Using steam as a motive pressure
Motive
Pressure
(PSIG)
Total Back
Pressure
(PSIG)
WPT1
1” x 1”
6” Head
WPT2
11/4” x 11/4”
6” Head
WPT3
11/2” x 11/2”
12” Head
WPT4
2” x 2”
12” Head
WPT5
3” x 2”
12” Head
5
10
10
25
25
25
50
50
50
75
75
75
100
100
100
100
125
125
125
125
125
125
150
150
150
150
150
150
2
5
2
15
10
5
40
25
10
60
40
15
80
60
40
15
115
100
80
60
40
15
120
100
80
60
40
15
185
370
502
958
1240
1490
1010
1220
1600
993
1380
1550
612
1210
1540
1720
195
488
836
1280
1420
1470
588
977
1060
1340
1420
1450
335
648
898
1590
2090
2570
1610
1970
2680
1560
2190
2580
951
1900
2440
2840
301
753
1300
2000
2270
2440
904
1510
1640
2100
2260
2390
1310
1760
2350
2700
3020
3780
2090
3620
4080
2250
3470
4390
2620
3390
4310
4620
2280
2880
3520
4110
4910
5120
2560
3020
3630
4230
4830
5230
2320
3740
5640
4690
5970
6850
3410
6650
7140
3730
6010
7920
4390
5780
6940
8000
3490
4420
5700
6880
7800
8420
3640
4610
5780
6910
7930
8590
4270
6230
9450
7230
9370
11400
5040
10200
11500
5660
8770
12400
6140
8120
10000
12300
4440
5720
7630
9390
11100
12900
5100
6270
8140
9920
11700
13300
Consult factory for motive pressures up to 200 PSIG
96
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
WPT2 - 11/4” x 11/4” (PMPM with 2” FTE-200)
WPT3 - 11/2” x 11/2” (PMPLS with 2” FTE-200)
11/2” FNPT INLET
11/4” FNPT INLET
PUMPS
VENT
1/2” FNPT
VENT
1” FNPT
25”
25”
MOTIVE
1/2” FNPT
MOTIVE
1/2” FNPT
11/4” FNPT OUTLET
2” FTE-200 TRAP
11/2” FNPT OUTLET
PMPM
PMPLS
141/8”
31/2”
2” FTE-200 TRAP
24”
31/2”
28”
28”
WPT4 - 2” x 2” (PMPC with 2” FTE-200)
WPT5 - 3” x 2” (PMPC with 21/2” FTE-200)
2” FNPT INLET
3” FNPT INLET
VENT
1” FNPT
VENT
1” FNPT
25”
25”
MOTIVE
1/2” FNPT
MOTIVE
1/2” FNPT
2” FNPT OUTLET
2” FNPT OUTLET
PMPC
PMPC
25 9/16”
2” FTE-200
TRAP
21/2” FTE-200
TRAP
25 9/16”
8”
28”
51/4”
28”
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
97
NON-ELECTRIC CONDENSATE PUMPS
Accessories & Options
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PUMPS
Pressure Motive Pumps
Receiver Tanks
Pre-Piped PRV & Drip Leg
Four standard condensate receiver sizes are available for our Pressure
Motive Pump Systems: 21, 48, 75 and 116 gallons. Custom Receiver
fabrication is available with our ASME certified fabrication facility.
A fully-assembled Pre-piped PRV, Drip Leg, or PRV and
Drip Leg Assembly guarantees proper installation of
your PMP System. It assures that your skid package
performs to optimum levels.
Cycle
Counter
Gauge Glass
“T-Bone”
Connection
Pump Tanks are available with gauge glass
to show condensate level inside the tank.
(bronze or stainless steel retainer)
Cycle Counter
• The cycle counter option allows you to
calculate and measure condensate flow
through the pump on vented systems. This also
gives an indication when maintenance and
repairs to your mechanism may be required.
Gauge • Proper selection of the appropriate cycle
Glass
counter is required: consult factory.
• The low-differential pressure cycle counter must
be selected for applications where total pump
back pressure is below 15 PSIG.
Outlet
Check
Valve
Vertical
Discharge
Pump
Vertical Discharge
Pump with “T-Bone”
connection allows inlet
and outlet condensate
hook-ups to be made
above the pump. This
is an advantage when
space is limited around
the base of the pump
due to equipment or
piping obstructions.
Inlet
Check
Valve
• Special cycle counter required when used
on Closed Loop Systems.
Product Description
GAUGE GLASS:
Model Code
Standard Bronze
for PMPC, PMPF, PMPLS, 21 Gallon Receiver
for PMPT
for PMPM Mini Pump (extremely low profile)
for 48 Gallon Receiver
for 75 Gallon Receiver
for 116 Gallon Receiver
Stainless Steel
for PMPSS
Gauge
Gauge
Gauge
Gauge
Gauge
Gauge
Glass
Glass
Glass
Glass
Glass
Glass
1
PMPT
PMPM
1
1
1
Gauge Glass SS
Following Options are available for gauge glasses. Contact factory.
Auto Drain (self-drain) Stainless Steel Armored
Reflex Gauge for PMPC, PMPF, PMPLS, 21 Gallon Receiver
Gauge Glass 1A
Gauge Glass - 1HP
CYCLE COUNTER:
Digital Cycle Counter (fits all PMPs)
Low Pressure Cycle Counter (fits all PMPs)
ASME Code Stamp:
Specify open or closed system
for PMPC, PMPT & PMPBP Pump Tank
(Contact Factory)
(Standard on 21, 48, 75, 116 Gallon Receivers and PMPF, PMPLS, PMPSS pump tanks)
INSULATION JACKET:
for
for
for
for
for
for
for
for
for
for
PMPC Ductile Iron Pump
PMPF Fabricated Steel Pump
PMPLS Low Profile Pump
PMPBP High Capacity Pump
PMPT Pump-Trap
PMPM Mini Pump (extremely low profile)
21 Gallon Receiver
48 Gallon Receiver
75 Gallon Receiver
116 Gallon Receiver
INSUL-CRV-PMPC
INSUL-CRV-PMPF
INSUL-CRV-PMPLS
INSUL-CRV-PMPBP
INSUL-CRV-PMPT
INSUL-CRV-PMPM
INSUL-CRV-21
INSUL-CRV-48
INSUL-CRV-75
INSUL-CRV-116
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
98
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
Accessories & Options
Pressure Motive Pumps
PUMPS
Patented “Snap-Assure” Feature
• Patented “Snap-Assure” feature is found only
on Watson McDaniel’s pump mechanisms.
“Snap-Assure” extends the useful life of the pump
by assuring the internal mechanism toggles at every
fill and discharge.
• “Snap-Assure” is supplied standard in Models PMPC,
PMPF, PMPT, PMPLS, PMPSS & PMPSP.
• “Snap-Assure” mechanisms will also fit other
manufacturers’ pump tanks.
• Mechanisms are simple and easy to replace, and are a
cost-effective way to make your pump as good as new.
Insulation Jacket
Insulation Jackets
conserve energy by
reducing heat loss. They
also improve safety by
protecting personnel from
hot surfaces. Jackets
have velcro closures
for easy installation or
removal. Fits tightly
around pump tanks
and receivers.
Snap-Assure Patent No. 6572340
Product Description
Model Code
PRE-PIPED ACCESSORIES:
Pre-piped
Pre-piped
Pre-piped
Pre-piped
MECHANISMS:
Pressure Regulating Valve (PRV) for motive steam or air
Drip Leg Station with Steam Trap
Drip Leg Station with Steam Trap and PRV
Exhaust Line
PRV1
PRV2
PRV3
PRV4
New Mechanism Assembly with Cover
for PMPF
for PMPC, PMPLS
for PMPBP
for PMPT
for PMPM (cover not required)
900-03
910-03
900-02
921-03
911-03
for PMPF
for PMPC, PMPLS
for PMPT
900-03R
910-03R
921-03R
Stainless Steel: 1/2” - 3” NPT
See WSSCV Page
REBUILT MECHANISMS: *
CHECK VALVES:
* Note for Rebuilt Mechanisms:
The exchange program is for mechanisms with two years of service or less. The old mechanism must be returned along with the
order for the rebuilt mechanism. Orders without old mechanisms will be invoiced at the new mechanism price.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
99
NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Pressure Motive Pumps - Capacities
PUMPS
C A PA C I T I E S – Condensate (lbs/hr)
Motive
Pressure
(PSIG)
Total Back
Pressure
(PSIG)
PMPLS
1” X 1”
6” Head
5
10
10
25
25
25
50
50
50
75
75
75
100
100
100
100
125
125
125
125
125
125
150
150
150
150
150
150
2
5
2
15
10
5
40
25
10
60
40
15
80
60
40
15
115
100
80
60
40
15
120
100
80
60
40
15
1,760
1,870
2,200
1,650
1,980
2,300
1,650
1,980
2,300
1,540
1,980
2,420
1,650
1,870
2,090
2,420
1,430
1,540
1,760
1,980
2,200
2,420
1,590
1,640
1,860
2,080
2,300
2,520
1,860
2,200
3,030
3,130
3,600
4,700
2,280
4,050
4,700
2,400
3,780
5,130
2,750
3,600
4,700
5,400
2,380
2,980
3,430
4,170
5,100
5,850
2,650
3,150
3,800
4,500
5,290
6,100
175
175
175
175
175
175
200
200
200
200
200
200
140
120
100
60
40
15
160
140
100
80
40
15
-
2,600
3,100
3,600
4,850
6,200
7,500
2,400
3,100
4,200
4,700
6,800
8,400
Using steam as a motive pressure
PMPC, PMPF, PMPSS*
2” X 1”
2” X 11/2”
2” X 2”
12”Head
12”Head
12”Head
3” x 2”
12”Head
3” x 2”
Duplex
3” x 2”
Triplex
3” x 2”
Quadraplex
PMPBP
4” x 4”
24”Head
1,920
2,450
3,370
3,480
3,990
5,200
2,530
4,500
5,240
2,660
4,190
5,700
3,060
4,000
5,210
6,010
2,640
3,330
4,100
4,850
5,950
6,660
2,940
3,490
4,230
5,000
5,870
6,820
2,860
4,350
6,880
4,990
6,560
7,970
3,370
6,800
7,970
3,600
5,920
8,580
4,160
5,560
6,880
8,740
3,270
4,140
5,400
6,600
7,760
9,240
3,400
4,320
5,490
6,660
7,920
9,450
3,180
4,840
7,650
5,550
7,290
8,860
3,750
7,560
8,860
4,000
6,580
9,540
4,630
6,180
7,650
9,720
3,640
4,600
6,000
7,340
8,630
10,270
3,780
4,800
6,100
7,400
8,800
10,500
3,540
5,380
8,500
6,170
8,100
9,850
4,170
8,4400
9,850
4,440
7,320
10,600
5,150
6,870
8,500
10,800
4,050
5,130
6,670
8,160
9,590
11,420
4,200
5,350
6,770
8,240
9,780
11,680
5,000
7,210
11,110
8,230
10,780
13,350
5,670
11,550
13,440
6,340
9,870
14,330
6,860
9,100
11,270
14,330
4,960
6,390
8,540
10,530
12,500
15,100
5,690
7,000
9,100
11,120
13,220
15,500
10,000
14,420
22,220
16,460
21,560
26,700
11,340
23,100
26,880
12,680
19,740
28,660
13,720
18,200
22,540
28,660
9,920
12,780
17,080
21,060
25,000
30,200
11,380
14,000
18,200
22,240
26,440
31,000
15,000
21,630
33,330
24,690
32,340
40,050
17,010
34,650
40,320
19,020
29,610
42,990
20,580
27,300
33,810
42,990
14,880
19,170
25,620
31,590
37,500
45,300
17,070
21,000
27,300
33,360
39,660
46,500
20,000
28,840
44,440
32,920
43,120
53,400
22,680
46,200
53,760
25,360
39,480
57,320
27,440
36,400
45,080
57,320
19,840
25,560
34,160
42,120
50,000
60,400
22,760
28,000
36,400
44,480
52,880
62,000
16,600
19,000
22,600
33,200
40,300
46,200
33,300
40,100
47,000
32,900
39,400
47,200
27,200
35,100
42,100
48,000
19,500
25,300
32,200
38,500
44,000
49,200
21,600
29,000
34,500
40,300
44,700
49,500
2,900
3,400
4,000
5,400
6,900
8,350
2,700
3,400
4,650
5,250
7,550
9,350
3,800
4,400
5,100
6,900
8,900
10,600
3,500
4,400
5,950
6,750
9,700
12,000
4,200
4,850
5,700
7,700
9,850
11,900
3,800
4,900
6,600
7,500
10,800
13,300
4,650
5,400
6,300
8,550
10,950
13,200
4,300
5,400
7,350
8,300
11,950
14,800
6,200
7,200
8,400
11,400
14,600
17,600
5,700
7,200
9,800
11,100
15,950
19,700
12,400
14,400
16,800
22.800
29,200
35,200
11,400
14,400
19,600
22,200
31,900
39,400
18,600
21,600
25,200
34.200
43,800
52,800
17,100
21,600
29,400
33,300
47,850
59,100
24,800
28,800
33,600
45,600
58,400
70,400
22,800
28,800
39,200
44,400
63,800
78,800
-
11/2” X 1” 11/2” X 11/2”
12”Head
12”Head
* PMPSS is rated to only 150 PSIG.
Capacity Correction Factors for Alternate Filling Heads
Pump
Inlet Size
1”
11/2”
2”
3”
4”
6”
1.00
12”
1.10
0.70
0.70
0.84
1.00
1.00
1.00
Filling Head
18”
24”
36”
1.20
1.30
1.50
1.10
1.10
1.04
0.80
1.20
1.20
1.08
1.00
1.35
1.35
1.20
1.10
48”
60”
1.15
1.20
NOTE: When the filling head differs from the standard filling height, the capacity
of the pressure power pumps are either increased or decreased. For example,
a pump with a 3” inlet that has a filling head of 36” as opposed to a standard
filling head of 12”, will have a capacity increase of 20%. Multiply the value
found in the Capacity Table above by 1.2.
100
Capacity Correction Factors for Gas as Motive Pressure
Pump
Inlet Size 10%
% Back Pressure relative to Motive Pressure
20% 30% 40% 50% 60% 70% 80%
90%
1”
1.00
1.13
1.16
11/2”
2”
3”
4”
1.04
1.04
1.04
1.06
1.06
1.06
1.08
1.08
1.08
1.20
1.25
1.30
1.35
1.40
1.45
1.10 1.12 1.15
1.10 1.12 1.15
1.10 1.12 1.15
No Capacity Change
1.18
1.18
1.18
1.23
1.23
1.23
1.28
1.28
1.28
Note: For slow-fill or low specific gravity applications,
consult factory.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
Pressure Motive Pumps - Capacities
PUMPS
Model PMPM - Pressure Motive Pump
C A PA C I T I E S – Condensate (lbs/hr)
Motive
Pressure
(PSIG)
Back
Pressure
(PSIG)
25
25
50
50
50
50
75
75
75
100
100
100
100
150
150
150
15
5
40
25
15
5
60
40
25
60
40
25
15
100
80
60
6” Filling Head
Steam Motive
Air Motive
1”
11/4”
1”
11/4”
1200
1970
1200
1480
1860
2240
1160
1640
1960
1415
1825
1985
2175
1120
1220
1570
1800
2955
1800
2220
2790
3360
1740
2460
2960
2122
2732
2977
3262
1680
1830
2355
1720
2265
1640
1980
2220
2485
1935
2185
2340
2020
2280
2420
2455
1456
1525
1885
2580
3398
2460
2970
3330
3728
2903
3278
3510
3030
3420
3630
3683
2184
2288
2828
WPT Series - Pump-Trap Combinations
C A PA C I T I E S – Condensate (lbs/hr); using steam as a motive pressure
Motive
Pressure
(PSIG)
Total Back
Pressure
(PSIG)
WPT1
1” x 1”
6” Head
WPT2
11/4” x 11/4”
6” Head
WPT3
11/2” x 11/2”
12” Head
WPT4
2” x 2”
12” Head
WPT5
3” x 2”
12” Head
5
10
10
25
25
25
50
50
50
75
75
75
100
100
100
100
125
125
125
125
125
125
150
150
150
150
150
150
2
5
2
15
10
5
40
25
10
60
40
15
80
60
40
15
115
100
80
60
40
15
120
100
80
60
40
15
185
370
502
958
1240
1490
1010
1220
1600
993
1380
1550
612
1210
1540
1720
195
488
836
1280
1420
1470
588
977
1060
1340
1420
1450
335
648
898
1590
2090
2570
1610
1970
2680
1560
2190
2580
951
1900
2440
2840
301
753
1300
2000
2270
2440
904
1510
1640
2100
2260
2390
1310
1760
2350
2700
3020
3780
2090
3620
4080
2250
3470
4390
2620
3390
4310
4620
2280
2880
3520
4110
4910
5120
2560
3020
3630
4230
4830
5230
2320
3740
5640
4690
5970
6850
3410
6650
7140
3730
6010
7920
4390
5780
6940
8000
3490
4420
5700
6880
7800
8420
3640
4610
5780
6910
7930
8590
4270
6230
9450
7230
9370
11400
5040
10200
11500
5660
8770
12400
6140
8120
10000
12300
4440
5720
7630
9390
11100
12900
5100
6270
8140
9920
11700
13300
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101
NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PUMPS
Pressure Motive Pumps
Sizing & Selection
The capacity of a Pressure Motive Pump is
determined by the Model and the size of the inlet
and outlet check valves. The larger the check valves
used, the more capacity the pump can handle.
For example: The 3” x 2” pump has a 3” inlet check
valve and a 2” outlet check valve.
STAND-ALONE PUMPS are furnished with pump tank,
check valves and internal pumping mechanism.
PUMPS WITH RECEIVER TANKS include the standalone pump(s), check valves, and receiver tank
mounted together on a frame. These are available in
Simplex, Duplex, Triplex and Quadraplex systems.
When sizing and selecting a Pressure Motive Pump,
five system conditions are required:
(See Diagram on following page)
1 Condensate Load
2 Condensate Pressure
3 Motive Steam, Air or other Gas Pressure available
for operating the pump
4 Available Filling Head between the bottom of the
receiver tank and the top of the pump tank
5 Total System Back Pressure (BP)
a) Condensate Return Line Pressure (5A)
b) Vertical Height condensate must be lifted (5B)
SAMPLE SYSTEM CONDITIONS
Open Loop with Vented Receiver
(When draining condensate from multiple sources)
For PMP Sizing:
Consult PMP Sizing Capacity Chart using 100 PSIG
inlet pressure and 40 PSIG back pressure. A 2" x 2" pump
has a capacity of 8,500 lbs/hr and is an appropriate
selection. Pump choices are models PMPC, PMPF
and PMPSS.
For Receiver and Vent Connection Sizing:
Refer to the Vented Receiver Sizing Chart for guidelines
on how to calculate the flash steam generated and use
this value to size the receiver and vent connection.
Closed Loop with Pressurized Reservoir
(When draining condensate from a single piece of
heat transfer equipment)
For PMP and Trap Sizing:
Reference PMPT and WPT Pump-Trap Combination
Capacity Charts for an estimation of the unit required.
Contact factory for more accurate sizing.
For Reservoir Pipe Sizing
Refer to the Reservoir Pipe Length Chart for guidelines
on determining the appropriate diameter and length
of pipe required for condensate back-up.
HOW TO ORDER
SPECIFY:
EXAMPLE:
1) Model or Pumps
PMPC
1 Condensate Load
8,000 lbs/hr
2) Size of Pump(s)
2” x 2”
2 Condensate Pressure
50 PSIG
3 Motive Steam Pressure
Steam @ 100 PSIG
4 Filling Head
12"
3) Stand-alone Pump or
Simplex or Duplex
Pump with Receiver Tank
(Note: Size of Receiver Tank must be specified when
ordering Pump with Receiver Tank)
5 Total Back Pressure = a + b
a) Line Pressure
b) Vertical Lift
30 PSIG
23 ft. (convert to PSIG)
4) Options
Calculation of Total Back Pressure:
Gauge glass
5) When ordering a Customized
Skid System, please confirm
and specify Receiver size.
To find the pressure required to lift condensate in PSIG,
multiply the lift in feet by 0.433.
Pressure required to lift Condensate
10 PSIG
(0.433 x 23 ft.)
Pressure in Return Pipe
+ 30 PSIG
Total Back Pressure
= 40 PSIG
102
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NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
Pressure Motive Pumps
1
CONDENSATE LOAD:
CAN BE FROM SINGLE OR MULTIPLE
CONDENSATE SOURCES
2
CONDENSATE PRESSURE
TOTAL BACK PRESSURE
CONDENSATE
INLET
5A
CONDENSATE RETURN
LINE PRESSURE
ATMOSPHERIC
VENT SIZE
(OPEN LOOP ONLY)
CLOSED LOOP - PRESSURIZED
RECEIVER TANK
FILLING HEAD
(12” PREFERRED)
PSIG
PUMP
EXHAUST
OPEN LOOP - VENTED RECEIVER
4
PUMPS
PMP Sizing & Selection
MOTIVE STEAM
OR GAS
PRESSURE
AVAILABLE
3
5B
LIFT
HEIGHT
PMP:
SIMPLEX
OR
MULTIPLEX
FT. X 0.433 =
PSIG
5
PSIG
= TOTAL BP
5
=
5A +
5B = TOTAL BP
STEAM TRAP
(REQUIRED FOR CLOSED LOOP
PMP SYSTEM ONLY)
Simplex or Multiplex PMP System
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103
NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
PUMPS
Pressure Motive Pumps
Closed Loop System
(Pressurized Reservoir)
R E S E RV O I R S I Z I N G
RESERVOIR PIPE LENGTH in feet (ft)
When sizing Pressure Motive Pumps for closed loop return
systems, a condensate reservoir should be installed on the
inlet side of the pump and below the equipment to be drained.
This will enable the condensate to collect while the pump is
in the discharge cycle, thus preventing liquid backup into the
equipment. The Reservoir Sizing Table (at right) gives the
minimum pipe size & length to produce the required reservoir
volume to accommodate the condensate load.
Condensate
Load
(lbs//hr)
0-500
1,000
1,500
2,000
3,000
4,000
5,000
6,000
7,000
8,000
9,000
10,000
20,000
How to select: Determine the total condensate load to be
pumped. Find that load value or greater in the table and
move right to read the pipe lengths in feet with the diameters
indicated above.
Customized reservoirs can be designed to accommodate
specific space and dimensional requirements. It is critical for
these designs to have adequate vapor space for condensate to
collect. When the volume required is known, from the table at
right, optional pipe diameters and lengths can be selected to
provide the same or greater volume. This table will allow you
to convert required volumes to customized sizes needed.
Watson McDaniel can furnish customized Pressure Motive
Pump Packages to fit your needs.
Reservoir Pipe Size (Diameter)
3”
2’
2’
3’
3.5’
4”
2’
2’
3’
4’
6’
6”
1’
2’
2’
3’
3’
3’
4’
4.5’
5’
8”
10”
1’
2’
2’
2’
2’
3’
3’
5.5’
2’
2’
4’
Note: When back pressure against the pump outlet is less than 50% of
the steam pressure to the heat exchanger, the above pipe lengths
can be reduced by half.
DATA REQUIRED FOR SIZING PMP IN A CLOSED LOOP SYSTEM (pressurized reservoir)
Single Condensate Source
STEAM
Condensate Load produced by Heat Transfer
Equipment (i.e. heat exchangers, tank coils,
jacketed kettles, etc.)
_______ lbs/hr
STEAM CONTROL
VACUUM
VALVE
BREAKER
AIR
VENT
(If this information is not readily available, consult
Engineering Section in the back of this catalog for
additional methods of load determination.)
STEAM
Motive Steam Pressure (Steam Motive Only):
____PSIG
CONDENSATE
RETURN
Total Back Pressure = a + b
a) Pressure required to lift condensate:
Vertical height in ft. x 0.433 = ___ PSIG
b) Pressure in condensate return line:
PSIG
HEAT
EXCHANGER
HOT
OUTLET
COLD
INLET
LIFT
RESERVOIR
FILLING HEAD
12” Preferred
STEAM
INLET
VENT
THERMODYNAMIC
DISC TRAP
PRESSURE
MOTIVE
PUMP
F&T
TRAP
INLET
CHECK VALVE
OUTLET
CHECK VALVE
Is there enough clearance under the equipment
and/or piping to allow for the installation of the
Reservoir and PMP with the Preferred Filling Head
of 12” as illustrated?
To size the PMP and Trap combination, see PMPT
or WPT Capacity charts for general reference.
(For additional information on the effect of the
steam trap in a closed loop application, refer to
expanded information later in this section. For more
accurate sizing of Pump-Trap systems to account
for system stall conditions, consult factory.)
To size the Reservoir, see Reservoir
Pipe Length chart.
104
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NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
Pressure Motive Pumps
PUMPS
Open Loop System
(Vented Receiver)
RECEIVER & VENT SIZING
When sizing a Pressure Motive Pump for an
Open-Loop atmospheric return system, the amount
of flash steam to be vented from the receiver must be
calculated. Vent sizing is critical to maintain 0 PSIG
in the receiver tank to allow free drainage of low
pressure systems. Undersized vents will cause
gradual pressure increase in the receiver. This impedes
drainage from the condensate source, and can
cause waterlogging of the system.
Usually the condensate load to be pumped comes
from multiple sources. For each source determine
VENTED RECEIVER SIZING
Receiver
Diameter
Receiver
Length
Vent Line
Diameter
75
150
300
600
900
1200
2000
3000
4000
5000
6000
7000
8000
4”
6”
8”
10”
12”
16”
20”
24”
26”
28”
30”
32”
36”
36”
36”
36”
36”
36”
36”
60”
60”
60”
60”
72”
72”
72”
1”
2”
3”
4”
6”
6”
8”
8”
10”
10”
12”
12”
14”
PERCENT (%) FLASH STEAM
Produced when condensate is discharged to atmosphere or into a
flash tank controlled at various pressures
(inches)
Quantity of
Flash Steam
(lbs/hr)
the pressure and load. Then go into the Percent Flash Steam table with
the condensate pressure and move right until under the appropriate flash
tank pressure to read the percentage of condensate that will flash into
steam. Take the source load and multiply it by the decimal value of the
percentage to calculate the amount (lbs/hrs) of flash steam. Repeat this for
all condensate sources. Enter the Vented Receiver Sizing table with the
total flash steam load to determine the correct sizes for receiver and vent.
Condensate
Pressure
(PSIG)
0
5
10
Flash Tank Pressure (PSIG)
20
30
40
60
80
100
5
10
15
20
30
40
60
80
100
125
150
200
250
300
350
400
1.6
2.9
3.9
4.9
6.5
7.8
10.0
11.8
13.3
14.9
16.3
18.7
20.8
22.5
24.1
25.6
0.0
1.3
2.4
3.3
5.0
6.3
8.5
10.3
11.8
13.5
14.9
17.3
19.4
21.2
22.8
24.2
0.0
1.1
2.1
3.7
5.1
7.3
9.1
10.6
12.3
13.7
16.2
18.2
20.0
21.7
23.1
0.0
1.7
3.0
5.3
7.1
8.7
10.4
11.8
14.3
16.4
18.2
19.9
21.4
0.0
1.4
3.7
5.5
7.1
8.8
10.3
12.8
14.9
16.8
18.4
19.9
0.0
2.3
4.2
5.8
7.5
9.0
11.5
13.7
15.5
17.2
18.7
0.0
1.9
3.5
5.3
6.8
9.4
11.5
13.4
15.1
16.7
0.0
1.6
3.4
4.9
7.6
9.8
11.7
13.4
15.0
0.0
1.8
3.3
6.0
8.2
10.2
11.9
13.5
DATA REQUIRED FOR SIZING PMP IN AN OPEN LOOP SYSTEM (vented receiver)
Multiple Condensate Sources
ATMOSPHERIC
VENT
MULTIPLE
CONDENSATE SOURCES
MOTIVE STEAM, AIR OR
OTHER GAS SUPPLY
Motive Gas and Pressure:
(Steam, Air, Other) @ ____ PSIG
ALTERNATE
CONDENSATE
INLET
PUMP EXHAUST
VENTED
RECEIVER
12” SEAL
ON
OVERFLOW
Source 1: _____ lbs/hr @ ____ PSIG
Source 2: _____ lbs/hr @ ____ PSIG
RETURN
LINE
PRESSURE
STEAM
INLET
FILLING
HEAD
12” Preferred
6” Min.
LIFT (ft.)
VENT
PRESSURE
MOTIVE
PUMP
WD 600
TRAP
Total Back Pressure = a + b
a) Pressure required to lift condensate:
Vertical height ___ ft. x 0.433 = ___ PSIG
b) Pressure in return pipe: ___ PSIG
Is there enough clearance under the
equipment and/or piping to allow for the
installation of the Receiver and PMP with
the Preferred Filling Head of 12” as illustrated?
To size the PMP, see Pump Capacity chart.
To size the Receiver and Vent connection,
see Vented Receiver Sizing chart.
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105
NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PUMPS
Pressure Motive Pumps
Problem:
Stalled Heat Exchanger
DESCRIPTION:
STALL CONDITION WITH MODULATED
STEAM FLOW
STEAM CONTROL
VALVE
When a modulating valve is used to control
product temperature in heat transfer equipment,
the valve will open and close as necessary to
meet the variable demand of the system to
maintain the product at constant temperature.
Therefore, when maximum heating is required,
the supply valve will be fully open to satisfy the
high steam demand requirement. At this point,
pressure is also being supplied at its highest
level, which may be sufficient to overcome
total system back pressure.
CONDENSATE
RETURN LINE
HEAT EXCHANGER
HOT
OUTLET
COLD
INLET
As the product temperature is satisfied, demand
decreases and the valve correspondingly begins
to close, reducing pressure differential. If demand
is satisfied, the valve modulates to its fully closed
position. Inlet supply pressure will eventually fall
below system back pressure, resulting in system
stall. This leads to poor heat transfer and water
hammer as condensate backs up in the heat
transfer equipment.
Solution:
VACUUM
BREAKER
AIR
VENT
STEAM
F&T
TRAP
Heat Exchanger System
without PMP
Use PMP & Steam Trap Combination
DESCRIPTION:
USE A PRESSURE MOTIVE PUMP
AND STEAM TRAP COMBINATION
(Available in INTERNAL and EXTERNAL
Steam Trap designs)
When the supply valve is fully open
and inlet pressure exceeds back pressure,
condensate forming in the heat transfer
equipment will be pushed through the pump
and steam trap into the condensate return
line. As the supply valve begins to close
and the back pressure exceeds inlet
pressure, any condensate forming inside
the heat transfer equipment will drain by
gravity into the pump tank. The condensate
will accumulate in the pump tank until the
float mechanism reaches its trip point. The
“tripping” of the mechanism opens the
motive valve to allow high pressure steam
into the tank to drive the condensate from
the tank to the condensate return line.
Note: A larger steam trap than normally
required to drain the heat transfer equipment
must be used to handle the high instantaneous discharge rate of the pump. See
additional information in this catalog for
sizing guidelines.
106
STEAM CONTROL
VALVE
AIR
VENT
VACUUM
BREAKER
CONDENSATE
RETURN
STEAM
STEAM
HEAT
EXCHANGER
HOT
OUTLET
COLD
INLET
LIFT
RESERVOIR
FILLING HEAD
VENT
STEAM
INLET
THERMODYNAMIC
DISC TRAP
PMPT
INLET
CHECK VALVE
PRESSURE
MOTIVE
PUMP/TRAP
COMBINATION
OUTLET
CHECK VALVE
Heat Exchanger System with PMP & Internal Trap (PMPT)
(Closed Loop System)
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NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
Pressure Motive Pumps
PUMPS
CLOSED LOOP SYSTEMS –
SIZING CONSIDERATIONS for PUMP-TRAP COMBINATION
What is Stall?
STALL is the condition of a modulating system where inlet pressure can no longer overcome back pressure,
preventing condensate drainage and resulting in poor heat transfer and waterhammer.
Although Pressure Motive Pumps can be supplied as stand-alone units, the vast majority of industrial condensate
transfer applications require a complete system of components to function both properly and efficiently. This section
is intended to familiarize the user with the information and components required to provide an efficient system:
The Solution to Stall
Install a Watson McDaniel Pump and Steam Trap Combination – available in both Internal and External Steam Trap designs.
The PMPT Pump with Internal Steam Trap should be considered for compactness, while the WPT Series Pump-Trap
Combination with External Steam Trap should be considered when capacities exceed the capability of the PMPT.
Why is a Steam Trap necessary after the PMP in a Closed Loop system?
Because this type of system operates with a modulating supply valve as described above, the pressure may, at times,
both exceed or fall below system back pressure. The pump is only required during stall loads. Therefore, a steam trap is still
required to prevent steam from discharging into the return line at times when the supply pressure exceeds the back pressure.
When properly sized and installed, these two components will automatically work in conjunction with each other requiring no
manual operation.
It is important to note that sizing the steam trap in a pump-external trap* combination application differs from sizing a
steam trap alone. Please refer to additional information below.
* Although the steam trap is internal in the PMPT Series, it is still appropriate to follow the guidelines below for sizing confirmation.
Sizing of a Pump-Trap Combination for a Closed Loop System
Although the PMP and Steam Trap operate in conjunction with each other, each component must be considered individually,
as there are specific considerations for closed loop systems. See below for detailed explanation and appropriate guidelines
for sizing of both the PMP and Trap components of the Pump-Trap Combination:
Proper Sizing of the PMP in a Pump-Trap Application
When required for drainage of heat transfer equipment supplied by a modulating control valve, the PMP need only be sized for
the stall load, which is often considerably less than equipment design load leading to a smaller PMP being required. The point
at which stall occurs can be calculated using either Stall Charts or appropriate formulas as shown on the following pages.
Proper Sizing of the Steam Trap in a Pump-Trap Application
In such an application, the steam trap must be sized not only to handle the full design load, but also sized to handle the high
instantaneous flow rates from the discharge of the pump at stall conditions – which can be well in excess of 3 times the
steady-state load of the pump! Therefore, it is appropriate to size the steam trap for both sets of conditions using the
following guidelines:
• Steam Trap sizing based on Full Design Load of the Heat Transfer Equipment:
Full Design Load X appropriate Safety Load Factor = Total Load for Steam Trap Sizing
• Steam Trap sizing based on Instantaneous Discharge of the PMP – at stall conditions:
Stall Load (as determined) at 1/4 PSI differential for Steam Trap Sizing
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107
NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PUMPS
Pressure Motive Pumps
Predicting Stall
Stall can be predicted with relative accuracy by either plotting values on a Stall Chart or by calculation using appropriate
formulas. These methods are then used to determine the percentage of heat load at stall. Examples of each method are
offered so the user may choose the method with which they are most comfortable.
The example below is for a typical heat transfer application**, such as a heat exchanger where steam may be used to
heat a constant flow of water at a fixed temperature. The parameters of such an application can be summarized as:
• The flow of the fluid to be heated is constant
• The desired outlet temperature of the heated fluid is to remain constant
• The steam for heating is to be supplied with a modulating valve (i.e. varying inlet pressure)
** Applications with alternate parameters will require different equations and guidelines for prediction of stall conditions.
Consult factory for other such applications.
Example:
Consider a heat exchanger supplied with 40 PSIG steam through a modulating valve that is designed to heat a
constant water flow of 145 GPM from 60 ˚F to 140 ˚F. Condensate will need to be lifted 23 ft. into a return
line that has approximately 5 PSIG back pressure.
Before the charts or formulas can be consulted, some additional conversions are first required:
1) The Saturated Temperature of the incoming steam: In this example, consult the Saturated Steam Table
(included in the Engineering Section of this catalog) to determine the Saturated Temperature
of 40 PSIG steam is 287 ˚F.
2) The equivalent Saturated Temperature of the total BACK PRESSURE: The total back pressure is equal
to the lift height equivalent pressure, plus any pressure that may exist in the return line.
• 23 ft. Lift Height x 0.433 = 10 PSIG
• Return Line Pressure = 5 PSIG
Therefore, the total BACK PRESSURE in this example is 15 PSIG. Consulting the Saturated Steam Table,
the saturated temperature of 15 PSIG steam is 250 ˚F.
DETERMINING PERCENTAGE OF HEAT LOAD AT STALL
The parameters required for determining stall can now be summarized as follows:
•
•
•
•
•
Inlet Steam Pressure at Full (100%) Load
Inlet Steam Temperature at Full (100%) Load
Outlet Temperature of Heated Fluid
Back Pressure (lift height + line pressure)
Back Pressure equivalent saturated steam temperature
=
=
=
=
=
40 PSIG (PS)
287 ˚F (TS)
140 ˚F (T2)
15 PSIG (Pb)
250 ˚F (Tb)
Mathematical Solution
% Heat Load at Stall
=
=
=
=
Tb – T2 x 100%
TS – T2
250 – 140 x 100%
287 – 140
110 x 100%
147
74.8 %
Graphical Solution (see Figure No. 1)
1) On the Left Vertical Axis, plot the Inlet Steam Temperature (TS): 287 ˚F.
2) On the Left Vertical Axis, find the Outlet Temperature of the fluid to be heated (T2): 140 ˚F.
Plot this point directly across on the Right Vertical Axis. Draw line between points TS and T2.
3) On the Right Vertical Axis, plot the Back Pressure: 15 PSIG. Draw a horizontal line from this
point to the Left Vertical Axis.
4) Locate the point at which the above lines intersect. Draw vertical line from this point to the Bottom
Horizontal Axis to determine the Percentage of Load at which Stall occurs – 75% in this example.
108
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
Sizing & Selection
1
40 PSIG STEAM
(Ts) = 287 ˚F
INLET TO STEAM
SUPPLY VALVE
STEAM TRAP REQUIRED
PUMPS
PRESSURE PSIG
Pressure Motive Pumps
3
INCHES
VACUUM
TEMPERATURE ˚F
15 PSIG
BACK PRESSURE
PMP REQUIRED
2
OUTLET WATER
TEMPERATURE (T2)
3
Figure No. 1
STALL CHART
4
75% HEAT LOAD
AT STALL
DETERMINING LOAD AT STALL
The load was not specified in the example provided. However, sufficient information was provided for its calculation.
Here is what is known:
•
•
•
Steam Supply Pressure
Constant Water Flow
Water Heating Requirements
=
=
=
40 PSIG
145 GPM
60 ˚F to 140 ˚F
Consulting the Engineering Section in the back of this catalog, the following equation for steam load requirements at heat
exchanger full load can be used:
Steam Load in lbs/hr
=
=
=
GPM x Temp. Rise ˚F
2
145 x (140-60)
2
5,800 lbs/hr
At 100% open, the inlet steam valve will supply 5,800 lbs/hr for heating. We can now determine the stall load to be used for
proper sizing of the Pump-Trap Combination. From the previous section, stall was determined to occur at 75% of the full load.
Therefore:
Stall Load = 5,800 lbs/hr X 0.75 = 4,350 lbs/hr
Finally, using the guidelines previously noted within this section, the PMP and Steam Trap can be properly sized and selected.
As always, consult the factory for additional information and sizing assistance when needed.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
109
NON-ELECTRIC CONDENSATE PUMPS
Customized Skid Packages
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PUMPS
Pressure Motive Condensate Pumping Systems
Custom Fabricated Units
Watson McDaniel’s fully equipped ASME
qualified fabrication facility stands ready
to assist you with all of your fabrication
needs. Our engineering staff specializes in
the design of Pressure Motive Condensate
Pumping Systems for both industrial and
institutional applications. You can order
either standard packages, available from
stock, or specialized systems to meet
your specific needs.
ASME
Certified
110
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NON-ELECTRIC CONDENSATE PUMPS
Custom Skid Packages
Pressure Motive Condensate Pumping Systems
This “Closed Loop” Duplex Pump
package utilizes two PMPF Pumps, two
FTE Steam Traps, and one 65 gallon
receiver tank equipped with a safety
relief valve. The Receiver is vented to
take the flash steam away at 29 PSIG
for usage elsewhere in the plant. To
accomplish this, our pilot-operated
back pressure regulator (BPR) is
mounted just off the vent line and set
to maintain the 29 PSIG pressure. If
pressure exceeds the set, the BPR unit
will dump to atmosphere thru the
supply acoustic silencer.
Another custom feature is an overflow
circuit utilizing a custom flash tank
equipped with a Temperature Regulator
for cooling applications. In the event of a
pump failure, the flooded receiver will
overflow the hot condensate into the
flash vessel where steam will vent to
atmosphere while the condensate gets
injected with cold water to safely dump
to drain.
PUMPS
DESCRIPTION OF
CUSTOM SYSTEM
SAFETY
RELIEF VALVE
FLASH STEAM
OUTLET
BACK
PRESSURE
REGULATOR
(BPR)
ACOUSTIC
SILENCER
FLASH VESSEL &
CONDENSATE
COOLER
RECEIVER
TEMPERATURE
REGULATING
VALVE
PMPF
WAFER
STYLE
CHECK
VALVES
COMMON
OUTLETS
FTE SERIES
STEAM TRAP
OVERFLOW
TO DRAIN
COOLED
BELOW
140 ˚F
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111
ELECTRIC PUMPS
W4100 & W4200
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PUMPS
Electric Condensate Pump
Model
Tank Sizes
Connections
Tank Material
Max Disch. Press.
TMO/TMA
Options
W4100
W4200
8/15/30/45/60/95 Gal.
6/15/24/36/50 Gal.
NPT
NPT
Fabricated Carbon Steel
Cast Iron
50 PSIG *
50 PSIG *
190˚F
190˚F
Mechanical & electrical alternators; gauge glass;
thermometer; discharge pressure gauges; isolation
valves; magnetic starters; 1750 RPM motors;
control panels; oversized or stainless steel receivers;
high temperature components
* Optional higher ratings available.
Float
Switch
Motor
Receiver
Tank
Pump
T Y P I C A L A P P L I C AT I O N S
I N S TA L L AT I O N
The primary purpose of the W4100 and W4200 electric
condensate pumps are to return condensate back to the boiler.
Pumping condensate over 190ºF is not recommended with
these pumps due to potential mechanical seal failure.
Place on an elevated, level and substantial foundation in a
clean, dry and accessible area. Locate receiver tank inlet below
lowest point of the condensate return lines.
HOW IT WORKS
The float, which is connected to the switch assembly rises when
condensate enters the receiver tank. When the float rises above
its set point, it energizes the motor on the pump. Once started,
the pump will continue to run until the water level drops below
the bottom position of the float switch. There it will de-energize
the motor to shut off the pump. This cycle repeats as condensate
begins to fill the receiver tank.
F E AT U R E S
• Fabricated steel receivers (W4100) or
cast iron receivers (W4200)
• Simplex and duplex packages
• Bronze-fitted centrifugal pumps
• Energy-efficient 3450 RPM motors
• Automatic venting
• Ceramic pump seal
• Heavy-duty float switch
• All steel receivers, and iron receivers over 24 gallons
MAINTENANCE
At regular intervals, check the motor lubrication, unless the motor
is equipped with a permanently lubricated bearing.
OPTIONS
• Mechanical and electrical alternators
• Gauge glass
• Thermometer
• Discharge pressure gauges
• Isolation valves
• Magnetic starters with HOA selector switch
• 1750 RPM motors, larger pumping capacities & higher
discharge pressures
• Wide variety of control panels
• Oversized receivers (45, 60 & 95 gallons)
• Stainless Steel receivers
• High Temperature (250˚F) Components
include a threaded NPT overflow port
HOW TO ORDER
S A M P L E S P E C I F I C AT I O N
Pump(s) shall be of the centrifugal type with two-piece
enclosed brass impeller, cast iron housing and stainless steel
motor shaft. The float switch shall be two-pole with plastic
case, stainless steel float and shafting, and double-break silver
contacts. A flat perforated brass strainer shall be provided in
the inlet of the pump from the tank.
112
Specify the discharge pressure, gallons per minute and
voltage requirements when ordering.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
ELECTRIC PUMPS
W4100 & W4200
Electric Condensate Pump
PUMPS
G NPT INLET
LOCATION ON
24-50 GAL.
C.I. RECEIVER
G
FLOAT SWITCH
LOCATION ON
6, 24-50 GAL.
C.I. RECEIVER
INLET
(NPT)
H
INLET
(NPT)
F
DUPLEX PUMP LOCATION
13.5 GALLON C.I. RECEIVER
D
C
A
B
J
5
E
PUMP OUTLET
L
K
DRAIN
OUTLET
(NPT)
DUPLEX PUMP
LOCATION ON 24-50
GAL. C.I. RECEIVER &
15-95 GAL.
STEEL RECEIVER
PUMP OUTLET
G-SERIES 3/4 NPT
J-SERIES 11/2 NPT
W4100 (Steel Receiver) Dimensions
Series Receiver Size
G
J
– inches
A
B
C
D
E
F
G
8 gallon
123/4
101/2
121/2
121/2
18
211/2
2
15 gallon
143/8
123/8
17
15
201/2
231/4
2
30 gallon
183/8
161/8
22
18
231/2
28
21/2
3/4
45 gallon
263/8
241/8
22
18
---
295/16
21/2
11/2
60 gallon
283/8
261/8
28
18
---
295/16
21/2
95 gallon
283/8
261/8
---
395/16
21/2
28
W4200 (Cast Iron Receiver) Dimensions
Series Receiver Size
G
J
28
H
J
K
L
3/4
11/2
1
41/8
31/4
1/2
1/2
3/4
11/2
11/2
– inches
A
B
C
D
E
F
G
H
J
K
L
6 gallon
41/2
121/2
141/2
125/8
181/4
207/16
2
3/4
43/32
3/4
3/4
15 gallon
147/8
131/8
181/2
131/2
191/8
24
2
1
33/4
1/2
3/4
24 gallon
191/8
155/8
257/8
15
201/32
2213/16
2
1
41/8
3/4
3/4
36 gallon
185/8
151/8
2721/64
221/2
2717/32
313/4
3
1
41/8
3/4
3/4
36 gallon
185/8
151/8
2721/64
221/2
---
353/8
3
1
43/8
3/4
11/2
50 gallon
185/8
151/8
2721/64
31
---
437/8
3
1
43/8
3/4
11/2
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www.watsonmcdaniel.com
113
ELECTRIC PUMPS
W4100
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PUMPS
Electric Condensate Pump with Steel Receiver
C A PA C I T I E S
EDR
8000
2000
4000
6000
8000
10000
15000
20000
25000
30000
40000
50000
2000
4000
6000
8000
10000
15000
20000
25000
30000
40000
50000
2000
4000
6000
8000
10000
15000
20000
25000
30000
40000
50000
2000
4000
6000
8000
10000
15000
20000
25000
30000
40000
50000
Discharge
Pressure
(PSIG)
20
20
20
20
20
20
20
20
20
20
20
20
30
30
30
30
30
30
30
30
30
30
30
40
40
40
40
40
40
40
40
40
40
40
50
50
50
50
50
50
50
50
50
50
50
Flow
Rate
(GPM)
12
3
6
9
12
15
22.5
30
37.5
45
60
75
3
6
9
12
15
22.5
30
37.5
45
60
75
3
6
9
12
15
22.5
30
37.5
45
60
75
3
6
9
12
15
22.5
30
37.5
45
60
75
Motor
HP
1/3
1/3
1/3
1/3
1/3
1/2
1/2
3/4
3/4
1
11/2
2
1/2
1/2
1/2
1/2
3/4
1
1
1
11/2
2
3
1
1
1
1
1
11/2
11/2
11/2
2
2
3
2
2
2
2
2
2
3
3
3
5
5
Receiver
Capacity
(gallons)
8
15
15
15
15
30
30
30
45
45
60
95
15
15
15
15
15
30
30
45
45
60
95
15
15
15
15
15
30
30
45
45
60
95
15
15
15
15
15
30
30
45
45
60
95
Simplex
Model
#
W4028G
W4122G
W4124G
W4126G
W4128G
W41210G
W41215G
W41220G
W41225J
W41230J
W41240J
W41250J
W4132J
W4134J
W4136J
W4138J
W41310J
W41315J
W41320J
W41325J
W41330J
W41340J
W41350J
W4142J
W4144J
W4146J
W4148J
W41410J
W41415J
W41420J
W41425J
W41430J
W41440J
W41450J
W4152J
W4154J
W4156J
W4158J
W41510J
W41515J
W41520J
W41525J
W41530J
W41540J
W41550J
Weight
(lbs)
90
125
125
125
125
190
190
200
285
285
335
385
180
180
180
180
185
230
230
285
290
340
395
190
190
190
190
190
240
240
290
295
240
395
195
195
195
195
195
245
255
305
305
370
430
Duplex
Model
#
N/A
W4122GD
W4124GD
W4126GD
W4128GD
W41210GD
W41215GD
W41220GD
W41225JD
W41230JD
W41240JD
W41250JD
W4132JD
W4134JD
W4136JD
W4138JD
W41310JD
W41315JD
W41320JD
W41325JD
W41330JD
W41340JD
W41350JD
W4142JD
W4144JD
W4146JD
W4148JD
W41410JD
W41415JD
W41420JD
W41425JD
W41430JD
W41440JD
W41450JD
W4152JD
W4154JD
W4156JD
W4158JD
W41510JD
W41515JD
W41520JD
W41525JD
W41530JD
W41540JD
W41550JD
Notes: 1) EDR = Square Feet of Equivalent Direct Radiation
2) Capacity of Steam (lbs/hr) = EDR x 0.25
114
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Weight
(lbs)
N/A
185
185
185
185
240
240
250
350
350
405
460
250
250
250
250
250
300
300
350
355
410
470
270
270
270
270
270
310
310
355
360
410
470
275
275
275
275
275
320
330
385
385
500
500
ELECTRIC PUMPS
W4200
Electric Condensate Pump with Cast Iron Receiver
PUMPS
C A PA C I T I E S
EDR
2000
4000
6000
8000
10000
15000
20000
25000
30000
40000
50000
2000
4000
6000
8000
10000
15000
20000
25000
30000
40000
50000
2000
4000
6000
8000
10000
15000
20000
25000
30000
40000
50000
2000
4000
6000
8000
10000
15000
20000
25000
30000
40000
50000
Discharge
Pressure
(PSIG)
20
20
20
20
20
20
20
20
20
20
20
30
30
30
30
30
30
30
30
30
30
30
40
40
40
40
40
40
40
40
40
40
40
50
50
50
50
50
50
50
50
50
50
50
Flow
Rate
(GPM)
3
6
9
12
15
22.5
30
37.5
45
60
75
3
6
9
12
15
22.5
30
37.5
45
60
75
3
6
9
12
15
22.5
30
37.5
45
60
75
3
6
9
12
15
22.5
30
37.5
45
60
75
Motor
HP
1/3
1/3
1/3
1/3
1/2
1/2
3/4
3/4
1
11/2
2
1/2
1/2
1/2
1/2
3/4
1
1
1
11/2
2
3
1
1
1
1
1
11/2
11/2
11/2
2
2
3
2
2
2
2
2
2
3
3
3
5
5
Receiver
Capacity
(gallons)
6
6
15
15
15
24
36
36
36
50
50
6
6
15
15
15
24
36
36
36
50
50
6
6
15
15
15
24
36
36
36
50
50
6
6
15
15
15
24
36
36
36
50
50
Simplex
Model
#
W4222G
W4224G
W4226G
W4228G
W42210G
W42215G
W42220G
W42225J
W42230J
W42240J
W42250J
W4232J
W4234J
W4236J
W4238J
W42310J
W42315J
W42320J
W42325J
W42330J
W42340J
W42350J
W4242J
W4244J
W4246J
W4248J
W42410J
W42415J
W42420J
W42425J
W42430J
W42440J
W42450J
W4252J
W4254J
W4256J
W4258J
W42510J
W42515J
W42520J
W42525J
W42530J
W42540J
W42550J
Weight
(lbs)
150
150
260
260
260
300
410
350
355
420
425
165
165
295
295
300
305
355
355
360
425
435
170
170
295
295
295
310
360
360
365
425
435
175
175
315
315
315
330
370
370
370
445
445
Duplex
Model
#
N/A
N/A
W4226GD
W4228GD
W42210GD
W42215GD
W42220GD
W42225JD
W42230JD
W42240JD
W42250JD
N/A
N/A
W4236JD
W4238JD
W42310JD
W42315JD
W42320JD
W42325JD
W42330JD
W42340JD
W42350JD
N/A
N/A
W4246JD
W4248JD
W42410JD
W42415JD
W42420JD
W42425JD
W42430JD
W42440JD
W42450JD
N/A
N/A
W4256JD
W4258JD
W42510JD
W42515JD
W42520JD
W42525JD
W42530JD
W42540JD
W42550JD
Weight
(lbs)
N/A
N/A
295
295
295
335
445
420
430
500
510
N/A
N/A
360
360
365
380
430
430
440
510
525
N/A
N/A
360
360
360
390
440
440
450
510
525
N/A
N/A
395
395
395
415
460
460
460
535
535
Notes: 1) EDR = Square Feet of Equivalent Direct Radiation
2) Capacity of Steam (lbs/hr) = EDR x 0.25
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
115
PILOT-OPERATED
REGULATING VALVES
116
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Pilot-Operated Regulating Valves
REGULATING VALVES
www.watsonmcdaniel.com
117
PILOT-OPERATED
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
HD Series
Pilot-Operated Regulators
PILOT-OPERATED REGULATORS
Pilot-Operated Regulators are more accurate and offer higher capacities than standard direct-operated regulators.
They will maintain constant set outlet pressure even when inlet pressure fluctuates or variations in flow occur. With the
proper selection of pilots, these regulators will accurately control temperature, pressure, or a combination of both.
Steam Service The HD-Series Regulator features Ductile Iron construction for increased pressure
& temperature rating, a large full-port strainer with blow-down valve on pilot adapter which keeps dirt
from entering control pilots, and field reversible pilot-mounting for versatile and easy installation.
Page No.
REGULATING VALVES
PILOT-OPERATED
HD-Series
HD Series Pilot-Operated Regulating Valve
DUCTILE IRON BODY
HD Regulators are used in conjunction with the
appropriate Pilot(s) to control Steam Pressure
or Process Temperature
PILOTS for HD Regulators
124-135
“P” & “P5”
Pressure Pilots - The “P” is the standard spring-loaded pressure pilot.
The “P5” is used for special applications requiring 0.5 PSI accuracy.
124
“BP”
Back Pressure Pilot - Controls system back pressure.
125
“T”
Temperature Pilot - Used for controlling temperature.
126-127
“A”
Air Pilot - Normally used for controlling steam pressure using an air signal.
Also used for temperature control when used in conjunction with the “PTR”
or “PTL” temperature controller.
128-129
“PTR” & “PTL” Temperature Controllers
(used with “A” Air Pilot) - The “PTR” or “PTL” will control
a wider temperature range than the standard “T” Pilot.
130-131
“TRP”
Temperature Pilot - Special purpose temperature pilot for controlling low temperatures
outside the range of the standard “T” Pilot. Also available with special sensing bulbs.
132
“S”
Solenoid Pilot - Used in conjunction with any of the above pilots for electrical on/off
control of HD Regulators.
133
“DP”
DP Pilot - Differential Pressure pilot – used when trying to balance two different
media sources that are being blended
134
Over Pressure Protection Methods
118
120-123
135
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
HD Series Regulators (with commonly used Pilots)
HDP
Pressure Regulator
136-143
136-137
(HD Regulator with “P” Pressure Pilot)
138-139
(HD Regulator with “T” Temperature Pilot)
HDA
Air Controlled Pressure Regulator
REGULATING VALVES
Temperature Regulator
140-141
(HD Regulator with “A” Air Pilot)
HDP T
Pressure & Temperature Regulator
(HD Regulator with “P” Pressure & “T” Temperature Pilot)
142-143
HSP Series Pilot-Operated Pressure Regulating Valve
CAST STEEL BODY
The Watson McDaniel HSP Pilot-operated Regulating Valve
is constructed of Cast Carbon Steel for higher pressure &
Noise Attenuation
- Reduces
noise in pressure reducing applications
temperature
ratings.
144-145
148-151
Noise Attenuators for Pressure Regulators – Series A, H & S
146-149
Capacities for Sizing of HD & HSP Series Regulators
150-151
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119
PILOT-OPERATED
HDT
R E G U L AT O R S
HD Series
Pilot-Operated Regulating Valve
Ductile Iron
REGULATING VALVES
PILOT-OPERATED
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
Design Pressure/
Temperature Ratings
TMA/PMA
HD-Series
1/2” – 6”
Threaded 1/2” - 2”
Flanged 150# 1” - 6”
Flanged 300# 1” - 6”
Ductile Iron
300 PSIG
NPT
450 PSIG @ 650˚ F
150# FLG 150 PSIG @ 566˚ F
300# FLG 450 PSIG @ 650˚ F
T Y P I C A L A P P L I C AT I O N S
The Watson McDaniel HD-Series pilot operated regulators were
designed for extremely accurate control of temperature and
pressure in steam service applications. The HD-Series is made of
Ductile-iron for extended pressure and temperature ratings. These
regulators use several different control pilots, which can be attached
to the valve to control pressure, temperature, or a combination of
both. The different control pilots can be added or removed from the
regulator body. This modular design adds to the versatility of this
product. The most common options include the P-Pilot for pressure
reducing, and the T-Pilot for temperature control.
• Ductile Iron body for higher pressures
• Full port strainer & blowdown
valve on pilot adapter for ultimate
protection from dirt & scale
• Hardened stainless steel trim
for extended life
• Pre-mounted tubing & field reversible
pilot adapter
• Optional reduced port trim
• Low differential pressure option
• Low inlet pressure option
Right or Left
Pilot Mounting
Available
(Non-standard
left mounted
shown)*
Ductile Iron Body
Hardened
SST (55 Rc)
Seat & Disk
Full Port Pilot
Strainer with
built-in
Blowdown
Valve
INLET
Self-cleaning
stem guide
Spring
protected
from steam
High Tensile
Diaphragm
120
* Standard pilot mounting is
on the right side of the
regulator when looking
into the outlet port. Pilot
mounting on HD
regulators are field
reversible.
F E AT U R E S
• No external power source is required.
This simplifies the valve and minimizes
installation and maintenance costs.
• Pressure and temperature pilots can be used
in combination eliminating the need for a
separate pressure and temperature regulator
• Ductile iron for higher pressure ranges and
increased safety. Ductile Iron is a better choice
than cast iron for steam applications.
• Full port strainer and blowdown valve on
pilot adapter for ultimate protection against
dirt and scale
• Hardened stainless steel trim (55 Rc) for
extended life even in the most demanding
applications
• The innovative design allows the pilot to be
mounted on either side of the regulator and
is easily field reversible
• Comes fully assembled with tubing and pilot
adapter. The control pilot requires only four
bolts to complete the installation.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R S
HD Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Pilot-Operated Regulating Valve
TYPICAL PILOTS
T Y P I C A L A P P L I C AT I O N S
• Pressure Regulating
• Temperature Regulating
TEMPERATURE
Pilot
SOLENOID
Pilot
REGULATING VALVES
AIR
Pilot
CONTROL PILOTS
Pilot Mounting
On-Off
Standard pilot mounting is on the right side of the regulator
when looking into the outlet port (see diagrams on
next page which are all right mounted). For opposite
mounting, please specify when ordering. Pilot mounting
on HD regulators are field reversible.
On-off control of the regulator is possible by using the S-Solenoid
Pilot. The S-Pilot allows the regulator to be shut off or turned
on electrically. Normally the regulator is equipped with either
a P-Pressure Pilot or T-Temperature Pilot in addition to the
S-Solenoid Pilot.
Pressure
P r e s s u r e - Te m p e r a t u r e
When controlling pressure there are several options you can use
for a pilot. The P-Pilot and the P5-Pilot are both spring adjusted
pressure pilots. The P-Pilot is used on typical general-purpose
pressure reducing applications. The P5-Pilot is used when higher
accuracy is required and is capable of maintaining a control
pressure window of less then 1 PSI. The A-Pilot is air controlled
and generally used when adjustment of the regulator and
pressure reducing station is done remotely.
The PT-Pilot combination is used when it is desirable to control both
the pressure and temperature of a system with only one regulating
valve. The unique features of this modular valve allow this to be
accomplished quite easily. When the PT-Pilot combination is used, the
downstream pressure is limited to a maximum setting by the pressure
pilot, while the temperature pilot maintains the correct temperature.
Te m p e r a t u r e
The T-Pilot is used to control temperature. The T-Pilot is filled
with a temperature sensitive liquid, which expands when heated.
The expansion of this liquid actuates a bellows that controls
the temperature-regulating valve. The T-Pilot is equipped with
an overheat bellows that protects the pilot in case of an over
temperature condition. The T-Pilot controls temperature through
a range of 60-260˚F. Spec: ANSI/FCI 70-2 Class IV shut-off.
Back Pressure
When controlling the back pressure in a steam system, the BP-Pilot
is used in conjunction with the HD-Series Regulator. This controls
the pressure on the upstream side of the regulator.
Differential Pressure
The DP-Pilot is used when trying to balance two different media
sources that are being blended.
C O M B I N AT I O N P I L O T S
One of the advantages of the HD-Series regulating valve is
that it can be used with many different variations of control pilots.
Up to three pilots can be used simultaneously to control the
operation of these valves. The most common is the “PT” PressureTemperature combination pilots. In addition to these pilots being
used together the S-Solenoid Pilot can be used for turning the
system on and off. (See next page for combination examples.)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
121
PILOT-OPERATED
PRESSURE
Pilot
• Pressure-Temperature Control
• Back Pressure Control
• Differential Pressure Control
R E G U L AT O R S
HD Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Pilot-Operated Regulating Valve
TYPICAL REGULATOR & PILOT COMBINATIONS
HDA
HDP
HDT
Regulator
with
Pressure Pilot
Regulator
with
Temperature
Pilot
REGULATING VALVES
PILOT-OPERATED
Regulator
with
Air Pilot
HDS
Regulator
with
Solenoid Pilot
HDPS
Regulator
with
Pressure & Solenoid
Pilots
HDPT
HDPTS
Regulator
with
Pressure &
Temperature
Pilots
Regulator
with
Pressure,
Temperature &
Solenoid Pilots
HDTS
Regulator
with
Temperature &
Solenoid Pilots
OTHER PILOT CONFIGURATIONS
USED WITH HD REGULATOR
• Air / Solenoid
• Air / Pneumatic Temperature Controller
• Air / Solenoid / Pneumatic Temperature
Controller
• Back Pressure
• Back Pressure / Solenoid
• Differential Pressure
Watson McDaniel’s Pilots will fit other
Manufacturers’ Regulators.
122
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R S
HD Series
Pilot-Operated Regulating Valves
H D - S e r i e s D I M E N S I O N S – inches / pounds
B
51/2
51/2
61/4
73/8
73/8
81/4
9
87/8
107/8
141/8
C
33/8
33/8
31/2
47/8
47/8
53/8
53/4
63/4
71/2
10
D
61/2
61/2
7
83/4
83/4
107/8
113/4
131/4
143/4
193/4
Weight (lbs)
NPT 150# 300#
18
18
23
40
45
43
43
55
60
65
75
85
100
105
130
145
215
235
420
470
Minimum Inlet Pressure (for Valve):
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve)
REGULATING VALVES
(A) Face-To-Face
NPT 150# 300#
43/8
43/8
53/8
51/2
6
1
6 /2
71/4
67/8
73/8
1
1
7 /2
8 /2
9
93/8
10
10
103/4
7
11 /8 121/2
151/8
16
Minimum Differential Pressure (for Valve):*
10 PSI (Standard Main Valve)
3 PSI
(Low Pressure Main Valve)
* Not required for Temperature Pilot applications
Option: Stainless diaphragms and external tubing - consult factory
M AT E R I A L S
Body
Cover
Gasket
Cover Screws
Pilot Adapter
Screen
Tubing
Valve Seat
Valve Disc
Diaphragm
HOW TO ORDER
REGULATOR BODY
Specify: • HD regulator body
• Regulator size or capacity of steam required
• End connections
(threaded, 150/300# flanged)
Ductile Iron
Ductile Iron
Grafoil
Steel
Ductile Iron/Cast Steel
Stainless Steel
Copper
Hardened SST (55Rc)
Hardened SST (55Rc)
Phosphor Bronze
PILOT REQUIRED TO OPERATE THIS VALVE
Note: See “How to Order” in specific Pilot Section
• T Temperature Pilot
• P Pressure Pilot
• A Air Pilot
• S Solenoid Pilot
• BP Back Pressure Pilot
• PD Differential Pressure
A
FLG
A
NPT
Pilot mounting
surface
C
FLOW
OUT
Standard pilot mounting is on
the right side of the regulator
when looking into the outlet
port (as shown). Pilot
mounting on HD regulators
are field reversible.
B
D
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
123
PILOT-OPERATED
Size
1/2”
3/4”
1”
11/4”
11/2”
2”
21/2”
3”
4”
6”
MINIMUM OPERATING PRESSURES
PILOTS
“ P ” & “ P5 ”
Pilot
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Pressure Pilot for HD Regulating Valves
REGULATING VALVES
PILOT-OPERATED
Pressure Pilot
• Max Inlet Pressure: 300 PSIG
• Reduced Outlet Pressure Range: 3-200 PSIG
• Minimum Inlet Pressures:
15 PSIG when used with standard main valve
5 PSIG when used with low pressure main valve
• P-Pilot (Standard) + 1 PSIG accuracy
• P5-Pilot (Special) + 0.5 PSIG accuracy
PRESSURE-ADJUSTING SPRING RANGES
“P” Pressure Range
“P5” Pressure Range
Identifying Colors
3-25 PSIG
20-100 PSIG
80-200 PSIG
1-10 PSIG
10-25 PSIG
–
yellow
blue
red
M AT E R I A L S
Pilot Body & Cover
Gasket
Diaphragm
Head & Seat Assembly
Ductile Iron or Cast Steel
Grafoil
Phosphor Bronze
Hardened SST (55 Rc)
T Y P I C A L A P P L I C AT I O N S
The “P” & “P5” Pressure Pilots are used with the HD Regulator
to control steam pressure in steam mains or for process
equipment. Pilot operated regulators will maintain constant
downstream pressure even when the inlet pressure to the valve
fluctuates or steam usage varies.
F E AT U R E S
• The “P” Pilot can maintain downstream pressure to ±1 PSIG
• “P5” Pilot can maintain downstream pressure to ±0.5 PSIG
• Choices of three overlapping pressure ranges
• Pressure control spring can be changed in line
• Pilot is easily installed using only four bolts
• Full port strainer and blowdown valve on pilot adapter for
HOW TO ORDER
“P”, “P5” PRESSURE PILOT
Specify:
• Reduced pressure range –
Example:
“P” Pilot at 3-25 PSIG, yellow
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity
• End connections (threaded, 150/300# flanged)
ultimate protection from dirt and scale
• Can be used with temperature and solenoid control pilot
• Solid floating diaphragm is more failure resistant
• Watson McDaniel's pilots can be used with other
manufacturers’ regulators
OPTIONS
91/2
• Pressure pilot can be used with temperature pilot to eliminate
the need for two separate regulators
• Solenoid pilot can be added for remote on/off control
of regulator
• “P5” Pilot will maintain + 0.5 PSIG accuracy
12
Steam Sensing Line
Connection
1/4” NPT
M I N I M U M O P E R AT I N G P R E S S U R E S
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve)
Minimum Differential Pressure:
10 PSI (Standard Main Valve)
3 PSI (Low Pressure Main Valve)
124
5
Units: inches
8
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
“P”
“P5”
PILOTS
“ BP ” Pilot
Back Pressure Pilot for HD Regulating Valves
Back Pressure
Pilot
REGULATING VALVES
15 PSIG when used with standard main valve
5 PSIG when used with low pressure main valve
PRESSURE-ADJUSTING SPRING RANGES
Pressure Range
Identifying Colors
10-25 PSIG
20-100 PSIG
80-200 PSIG
yellow
blue
red
T Y P I C A L A P P L I C AT I O N S
The “BP” Back-Pressure Pilot used with the HD regulator,
maintains upstream pressure in steam systems. These regulators
are commonly used to supply flash steam to low pressure mains.
F E AT U R E S
• The “BP” Pilot can maintain upstream pressure to ±1 PSIG
• Choices of three overlapping pressure ranges
• Pressure adjusting spring can be changed with
regulator in line
M AT E R I A L S
Pilot Body & Cover
Gasket
Diaphragm
Head & Seat Assembly
Ductile Iron
Grafoil
Phosphor Bronze
Hardened SST (55 Rc)
HOW TO ORDER
“BP” BACK PRESSURE PILOT
Specify:
• Reduced pressure range –
Example:
“BP” Pilot at 20-100 PSIG, blue
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity
• End connections (threaded, 150/300# flanged)
• Pilot is easily installed using only four bolts
• Full port strainer and blowdown valve on pilot adapter for
ultimate protection from dirt and scale
• Solid floating diaphragm is more failure resistant
• Watson McDaniel's pilots can be used with other
manufacturers’ regulators
OPTIONS
• Can be used with solenoid pilot for on/off control
91/2
M I N I M U M O P E R AT I N G P R E S S U R E S
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve)
Steam Sensing Line
Connection
1/4” NPT
Minimum Differential Pressure:
10 PSI (Standard Main Valve)
3 PSI (Low Pressure Main Valve)
Units: inches
5
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
125
PILOT-OPERATED
• Max Inlet Pressure: 300 PSIG
• Back Pressure Range: 10-200 PSIG
• Minimum Inlet Pressures:
PILOTS
“ T ” Pilot
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Temperature Pilot for HD Regulating Valves
REGULATING VALVES
PILOT-OPERATED
Temperature Pilot
• Max Inlet Pressure: 300 PSIG
• Temperature Control Range: 60-260 F
• Minimum Inlet Pressures:
15 PSIG when used with standard main valve
5 PSIG when low pressure temperature pilot is used
with low pressure main valve
Low Pressure Temperature Pilot must be used
in conjunction with a low pressure main valve
for applications where inlet steam pressure is
less than 15 PSIG. SPECIFY WHEN ORDERING.
T E M P E R AT U R E - A D J U S T I N G R A N G E S
T Y P I C A L A P P L I C AT I O N S
The “T” Temperature Pilot is used with the HD regulator
to control temperature in various processes and systems.
Some examples are:
• Oil heaters
• Ovens
• Process heaters
• Vats
• Dryers
• Jacketed Kettles
F E AT U R E S
• Temperature adjustment made simple and easy by rotating
an adjustment knob to the desired temperature setting
• Thermostatic sensing bulb comes with an 8-ft. or 15-ft.
length capillary
• Capillary is armor-protected to resist damage
• Overheat protection bellows is incorporated into sensing
bulb; 200˚F overheat protection up to 350˚F
• Full port strainer and blowdown valve on pilot adapter for
ultimate protection from dirt and scale
OPTIONS
•
•
•
•
•
•
Temperature Pilot can be combined with Pressure and
Solenoid pilots
Additional capillary lengths can be ordered in 5-ft. increments;
up to 25-ft. maximum length
Wells* for isolating sensing bulb from process liquid are
available in 316 stainless steel or brass
Extended length wells are available
316 Stainless Steel Sensing Bulb
Other options available; consult factory
* Thermowells:
Wells isolate sensing bulb from the process liquid and are
available in Brass or Stainless Steel. When placed on the
side of a tank or vessel, the sensing bulb can be removed
without having to drain the process fluid.
126
Temperature Ranges*
Identifying Colors
60 - 120 °F (16 - 49 °C)
yellow
100 - 160 °F (38 - 71 °C)
black
120 - 180 °F (49 - 82 °C)
blue
160 - 220 °F (71 - 104 °C)
red
200 - 260°F (93 - 127 °C)
green
* Other ranges available; consult factory.
M AT E R I A L S
Body
Head & Guide
Seat
Sensing Bulb:
T
TU
TUBW
TUSW
TBW
TSW
Ductile Iron/Cast Steel
Stainless Steel
Stainless Steel
Copper Bulb
Copper Bulb w/Brass Union Hub
Copper Bulb w/Brass Well
Copper Bulb w/Stainless Steel Well
Copper Bulb w/Brass Well & Grommet
Copper Bulb w/Stainless Steel Well & Grommet
Pressure & Temperature
Pilot
combination
Controls downstream
pressure and process
temperature, eliminating
the need for a separate
pressure regulator
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PILOTS
“ T ” Pilot
Temperature Pilot for HD Regulating Valves
S E N S I N G B U L B S AVA I L A B L E
Units: inches
T
Plain copper bulb
TU
Union connected copper bulb that can be
screwed into the side of tank
* most common selection
81/2
T
5/8
5/8
3/4” NPT
TUSW Type TU bulb with a corrosion resistant stainless
steel well. The well, which isolates bulb from
process fluid, can be placed in the side of a tank
allowing the sensing bulb to be removed without
having to drain the tank of liquid
57/8
TUBW
3/4
3/4” NPT
TBW
Type T bulb with an extended length brass
well. The extended well allows deeper insertion
of sensing bulb into tanks.
TSW
Type T bulb with extended length stainless
steel well. The extended well allows deeper
insertion of sensing bulb into tanks.
61/8
TUSW
3/4
3/4” NPT
18
TBW
REGULATING VALVES
TU
Other options available; consult factory.
3/4
3/4” NPT
HOW TO ORDER
18
TSW
3/4
“T” TEMPERATURE PILOT
Specify:
• Temperature range from the chart or indicate the
temperature of the process you wish to control
• The length of capillary required; 8-ft. is standard
• Bulb type needed:
T, TU, TUBW, TUSW, TBW & TSW
3/4” NPT
Diagram below shows “T” Pilot TU Option for Bulb
Example: TU, 8 FT CAP, 60-120˚F, yellow
Union
Nut
Union Hub
3/4” NPT
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity of steam required
• End connections (threaded, 150/300# flanged)
6 3/4
MINIMUM OPERATING PRESSURES
See bulb
chart above
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve with
Low Pressure Temperature Pilot)
Low Pressure Temperature Pilot must be used in
conjunction with a Low Pressure Main Valve for
applications where inlet steam pressure is below
15 PSIG. SPECIFY WHEN ORDERING.
Units: inches
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
127
PILOT-OPERATED
*Most common
51/2
TUBW Type TU bulb with a brass well. The well, which
isolates bulb from process fluid, can be placed
in the side of a tank allowing the sensing bulb to
be removed without having to drain the tank of
liquid
PILOTS
“A” Pilot
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Air Pilot for HD Regulating Valves
Controls Pressure & Temperature
REGULATING VALVES
PILOT-OPERATED
Air Pilot
• Max Inlet Pressure: 300 PSIG
• Reduced Outlet Pressure Range: 3-200 PSIG
• Minimum Inlet Pressures:
15 PSIG when used with standard main valve
5 PSIG when used with low pressure main valve
Note: Temperature Range: 0-350 F when used with
PTL & PTR temperature controllers
MAXIMUM CONTROL AIR PRESSURE ON AIR PILOT IS 125 PSIG
T Y P I C A L A P P L I C AT I O N S
PRESSURE ADJUSTING RANGES
The “A” Air Pilot is used with the HD Regulator to control
steam pressure on steam mains and process equipment.
The “A” Air Pilot can also be used in conjunction with the
PTL or PTR pneumatic temperature controllers for controlling
temperature in process applications. The principal advantage
the “A” Air Pilot over standard spring loaded pilots is that
pressure adjustments to the regulator can be made from a
remote location. A regulator that is placed in a difficult to
reach or inaccessible location can be adjusted by a remote
control panel board placed in an accessible location.
HOW IT WORKS
When air pressure is applied to the upper chamber of the air
pilot it exerts a downward force on the air pilot’s diaphragm.
This force controls the outlet pressure of the steam through
the regulating valve. The control process is similar to a spring
loaded pressure pilot except that the air pressure takes the place
of the spring. There are three separate models of air pilots that
make up the complete range depending on the steam pressure
that needs to be controlled and the control air pressure available.
See Pressure Adjusting Ranges chart.
Model
Pressure
Ranges
A1
3-125 PSIG
1:1 ratio of steam pressure
to control air pressure
A4
3-200 PSIG
4:1 ratio of steam pressure
to control air pressure
A6
20-200 PSIG
6:1 ratio of steam pressure
to control air pressure
Description
The larger Diaphragm area of the “A4” & “A6” Air Pilots
allow the use of lower control air pressure to regulate higher
pressure steam.
M AT E R I A L S
Pilot Body & Cover
Gasket
Cover Screws
Head & Seat Assembly
Ductile Iron
Grafoil
Steel, GR5
Hardened SST (55 Rc)
F E AT U R E S
• Pressure adjustments to the regulator can be done from
Control Air Connection
1/4” NPT
a remote location using an air signal
• Air-operated pilot ensures instant response and extremely
accurate control
• Full port strainer and blowdown valve on pilot adapter for
ultimate protection from dirt and scale
• Controls pressure settings within ±1 PSIG
D I M E N S I O N S – inches
128
Model
A
B
A1
51/4
5
A4
51/4
7 7/8
A6
51/4
91/2
B
Steam
Sensing Line
Connection
1/4” NPT
A
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PILOTS
“A” Pilot
Controls Pressure & Temperature
Air Pilot for HD Regulating Valves
HOW TO ORDER
REMOTE CONTROL PANEL BOARDS
REGULATING VALVES
VALVES
REGULATING
AIR SUPPLY
AIR SIGNAL
“A” AIR PILOT
Specify:
• Air Pilot A1, A4 or A6
• Remote Control Panel Board
PL1, PL2 or PL3
PILOT-OPERATED
Three different options of remote control panel boards can be used along
with the "A" Air Pilots. Supply air is fed directly through the control panel
board to the air pilot. You can choose one of the three options of control
panel boards when using the air piloted regulators. Minimum 5 PSIG air
supply pressure is required.
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity and pressure range
of steam required
• End connections (threaded, 150/300# flanged)
STEAM PRESSURE
AIR SIGNAL
AIR SUPPLY AIR SIGNAL
PL1
PL3
PL2
PL1
The PL1 is made up of an air pressure regulator with adjustment knob
and pressure gauge that measures the amount of air pressure going to
the pilot (air signal). Steam pressure of the system is controlled by
adjusting the air pressure regulator.
MINIMUM OPERATING PRESSURES
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve)
Minimum Differential Pressure:
10 PSI (Standard Main Valve)
3 PSI (Low Pressure Main Valve)
PL2
The PL2 is the same as the PL1 with the addition of an extra air pressure
gauge for measuring the air supply pressure to the control panel board.
PL3
The PL3 is the same as the PL2 with the addition of a Steam
Pressure Gauge for measuring steam pressure on the outlet side
of the regulating valve.
CONTROL AIR PRESSURE RANGE
A-Pilot Control Pressure:
3-125 PSIG (depending on pilot selected and
desired outlet pressure)
Pressure Reducing Station Using HD Regulator with an Air Pilot
INLET
STEAM
AIR SIGNAL
(control air)
BYPASS
AIR SUPPLY
PL2
SENSING LINE
SLOPED DOWN
FROM PILOT
AIR PILOT
HD
REGULATOR
HDA
(REGULATOR
with AIR PILOT)
OUTLET
STEAM
D E S C R I P T I O N O F O P E R AT I O N
The “A” Air Pilot is being used in conjunction
with the PL2 Control Panel Board to regulate
steam pressure. A small air regulator on the
panel board can be adjusted to control the air
pressure to the pilot. One gauge on the panel
board measures air line pressure to the panel
board and the other gauge shows the air
pressure being sent to the pilot. Steam pressure
at the outlet of the regulator is controlled by the
air pressure signal to the pilot. Depending on
the air pilot model chosen (A1, A4, A6), there
will be a 1:1, 4:1, or 6:1 ratio of outlet steam
pressure to air pressure.
FLOW
STEAM TRAP
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
129
PILOTS
PTL & PTR Controller
Pneumatic Temperature Controller
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
(used with Air Pilot)
REGULATING VALVES
PILOT-OPERATED
Pneumatic Temperature
Controller
• Max Inlet Pressure: 300 PSIG
• Temperature Range: PTR: 0-300 F
PTL: 50-350 F
• Minimum Inlet Pressures:
PTL
(mounts directly on
tank or vessel)
15 PSIG when used with standard main valve
5 PSIG when used with low pressure main valve
T Y P I C A L A P P L I C AT I O N S
The PTL and PTR Pneumatic Temperature
Controllers operate over a wider temperature
range than our standard “T” temperature pilot.
These temperature controllers also react quicker to
temperature change which make them an excellent
choice for instantaneous hot water applications.
PTR
(mounts remotely
with 4-ft. Capillary)
HOW IT WORKS
The PTL and PTR Pneumatic Temperature
Controllers are used in conjunction with an
“A” Air Pilot to control the operation of the HD
Regulator. The PTL uses a bimetallic element to
sense temperature and the PTR uses a hydraulically
filled bulb with a 4-ft. capillary to sense temperature.
The air supply is connected to the inlet of the controller
and the air output signal is fed directly to an Air Pilot,
which controls the opening and closing of the steam
regulating valve.
F E AT U R E S
Model
Temperature Adjustment Range
Maximum Air Supply Pressure
Sensing Bulb
Max. Pressure
Max. Temperature
Material
Optional Material
Capillary Length
PTL
50 - 350 ˚F
35 PSIG
Bi-Metallic
250 PSIG
400˚F
Copper
Stainless Steel
N/A
PTR
0 - 300 ˚F
35 PSIG
Hydraulic Fill
250 PSIG
350˚F
Copper
Stainless Steel
4-ft.
• Accurate and rapid response to temperature
changes
• Covers control temperature range of 0-350 ˚F
MINIMUM OPERATING PRESSURES
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve)
HOW TO ORDER
PTL & PTR PNEUMATIC TEMPERATURE CONTROLLER
Specify:
• PTL or PTR controller model (air pilot required for operation)
AIR PILOT
Specify:
• A1, A4 or A6 Air Pilot model (refer to Air Pilot section)
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity
• End connections (threaded, 150/300# flanged)
130
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PILOTS
PTL & PTR Controller
Pneumatic Temperature Controller
SERIES HDA-PTL
PNEUMATIC
TEMPERATURE
REGULATOR
DESCRIPTION OF
O P E R AT I O N
AIR
SIGNAL
LINE
VACUUM
BREAKER
AIR
REGULATOR
AIR
VENT
AIR
INLET
SEMI-INSTANTANEOUS
HEATER
COLD
WATER
INLET
“PTL”
CONTROLLER
REGULATING VALVES
HOT
WATER
OUTLET
The PTL Pneumatic Temperature
Controller senses outlet water
temperature on a semiinstantaneous hot water heater.
When the outlet water temperature
falls below the set point, the PTL
pneumatic temperature controller
sends an air signal to the A1 Air
Pilot which opens the regulator,
allowing steam to heat the tank.
When the water reaches the
desired set temperature, the PTL
pneumatic temperature controller
shuts off the air signal to the A1
Air Pilot and the regulator closes,
cutting off steam to the heater.
STEAM
TRAP
Model PTL (direct mounted)
TEMPERATURE SET POINT ADJUSTMENT KNOB
WELL
7/8
111/8
11/2
3/4” NPT
3 5/8
1/8”
NPT
111/2
27/8
Units: inches
Model PTR (remote mounted)
WELL
2-1/4
TEMPERATURE SET POINT ADJUSTMENT KNOB
13/32
111/8
3/4” NPT
3 5/16
COPPER
61/2
23/4
STAINLESS STEEL
WITH RELAY
1/8”
NPT
21/8
51/4
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
131
PILOT-OPERATED
STEAM
INLET
BYPASS LINE
(used with Air Pilot)
PILOTS
“TRP” Pilot
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Temperature Pilot for HD Regulating Valves
REGULATING VALVES
PILOT-OPERATED
Temperature Pilot
• Max Inlet Pressure: 300 PSIG
• Temperature Control Range: 20-250 F
• Min Inlet Pressures: 15 PSIG standard main valve
5 PSIG low pressure main valve
T Y P I C A L A P P L I C AT I O N S
The “TRP” Temperature Pilot is used with the HD Regulator to
control temperature in various processes and systems. Some
examples are: Oil heaters, Ovens, Process Heaters, Vats, Dryers
and Jacketed Kettles.
The “TRP” will control
lower temperatures
than the standard
“T” Pilot
F E AT U R E S
• Ductile Iron pilot body
• Stainless steel valve and seat
• Standard capillary is copper with 316 stainless steel
armor in 10 feet length
OPTIONS
• Additional Capillary Length: Available up to 25-ft. in
5-ft. increments.
M AT E R I A L S
Pilot Body
Valve and Seat
Ductile Iron
Stainless steel
Support Bracket
Bulb & Capillary
All Other Parts
Aluminum
Copper (optional stainless steel)
Brass
• Special Materials: Sensing bulb, wells, and capillary are
available in special corrosion resistant materials.
- 316 stainless steel capillary
- 316 stainless steel armor with standard capillary
- Kynar-covered capillary
• Finned Bulb: Special finned sensing bulb for improved
temperature sensitivity when controlling air temperature in
heating ducts
• Thermowell or Separable Socket: Available in
stainless steel or copper
• Temperature Sensing Dial: Indicates temperature of
process being controlled
HOW TO ORDER
“TRP” TEMPERATURE PILOT
Specify:
• Temperature range from the chart or indicate the temperature
of the process you wish to control
• The length of capillary required
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity of steam required
• End connections (threaded, 150/300# flanged)
D I M E N S I O N S – inches
Std. Bulb
Range
˚F
40-65°
65-85°
85-110°
110-135°
135-160°
160-190°
190-210°
210-245°
245-275°
275-310°
305-365°
365-415°
415-435°
132
Bulb
Bulb
Length Diameter
A
B
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
121/4
1.0
Body Height
C
w/Dial w/o Dial
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
111/4 1611/64
Thermowell or
Separable Socket
D
E
13
1.1
13
1.1
13
1.1
13
1.1
13
1.1
13
1.1
13
1.1
13
1.1
13
1.1
13
1.1
13
1.1
13
1.1
13
1.1
4” minimum
length
THERMOWELL
1” NPT
1” NPT
Hub
C
D
A
B
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
E
PILOTS
“S” Pilot
Electric Pilot for On/Off Control of HD Regulating Valves
Solenoid
Pilot
PILOT-OPERATED
REGULATING
REGULATING VALVES
VALVES
•For Electrical On-Off Control
of Regulating Valves
•Max Inlet Pressure: 250 PSIG
T Y P I C A L A P P L I C AT I O N S
STANDARD SOLENOID PILOTS AVAILABLE
Typically used for automatic operation, remote control,
programmed cycling, sequential function interlocks with other
equipment, and emergency shut-off in case of power failure.
Steam Inlet Pressure
HOW IT WORKS
NEMA Ratings
The “S” Solenoid Pilot can be used in conjunction with
Pressure, Temperature, or Air Pilots to electrically control on/off
operation of the HD Regulator. When the solenoid pilot is used,
the regulator can be turned on or off by electrically activating
or de-activating the solenoid.
Voltage
Normally Closed (nc) – Standard
The normally closed Solenoid Pilot remains closed in the
non-activated state. The regulating valve will remain closed
until an electrical signal is sent to the solenoid pilot. This is
known as a fail-safe condition.
Normally Open (no) – Optional
The normally opened Solenoid Pilot remains open in the
non-activated state. The regulating valve will function normally
unless an electrical signal is used to shut-off the solenoid pilot.
0-180 PSIG
180-250 PSIG
NEMA 1 – Standard
NEMA 4 – Waterproof (optional)
NEMA 7 – Explosion-proof (optional)
110 Volts AC (standard)
24 Volts AC (optional)
220 Volts AC (optional)
240 Volts AC (optional)
M AT E R I A L S
Pilot Body & Cover
Gasket
Cover Screws
Internals
Ductile Iron
Grafoil
Steel, GR5
Stainless Steel
HOW TO ORDER
F E AT U R E S
• Available normally opened (no) or normally closed (nc)
• Full-port strainer and blow-down valve on pilot adapter to
eliminate failure caused by contaminated steam systems
OPTIONS
• Normally open solenoid
• NEMA Ratings: NEMA 4 and NEMA 7
• Voltage: 24 VAC, 220 VAC, 240 VAC
M I N I M U M O P E R AT I N G P R E S S U R E S
“S” SOLENOID PILOT
Specify:
• Inlet Steam Pressure range:
0-180 PSIG or 180-250 PSIG
• NEMA rating: NEMA 1, NEMA 4 or NEMA 7
(if not specified NEMA 1 Standard will be supplied)
• Control Voltage: 24, 110, 220 or 240 VAC
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity of steam required
• End connections (threaded, 150/300# flanged)
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve)
Minimum Differential Pressure:
10 PSI (Standard Main Valve)
3 PSI (Low Pressure Main Valve)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
133
PILOTS
“ DP ” Pilot
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Differential Pressure Pilot for HD Regulating Valves
REGULATING VALVES
PILOT-OPERATED
Differential Pressure Pilot
• Max Inlet Pressure: 300 PSIG
• Reduced Outlet Pressure Range: 3-200 PSIG
• Min Inlet Pressures: 15 PSIG standard main valve
5 PSIG low pressure main valve
• DP-Pilot + 2 PSIG accuracy
PRESSURE-ADJUSTING SPRING RANGES
“DP” Pressure Range
Identifying Colors
3-25 PSIG
20-100 PSIG
80-200 PSIG
yellow
blue
red
T Y P I C A L A P P L I C AT I O N S
The “DP” Differential Pressure Pilot is used with the HD
Regulator to maintain steam pressure at a balanced differential
pressure above another media source. This is typical on an oil
burner where steam used for atomization is injected into the oil
burner at a set pressure above the incoming oil supply. Therefore,
as oil pressure fluctuates based on demand, the steam pressure
will be maintained at a differential pressure above the oil pressure.
F E AT U R E S
• The “DP” Differential Pressure Pilot is used to maintain
downstream steam pressure to a set differential pressure
above loading pressure
• Accuracy to within ±2 PSIG
• 3 overlapping spring ranges to choose from
• Pilot is installed using only four bolts
• Full port strainer and blowdown valve on pilot adapter for
ultimate protection from dirt and scale
• Solid floating diaphragm
• Watson McDaniel's pilots can be used with other
manufacturers’ regulators
OPTIONS
M AT E R I A L S
Pilot Body & Cover
Gasket
Diaphragm
Head & Seat Assembly
Ductile Iron & Cast Steel
Grafoil
Phosphor Bronze
Hardened SST (55 Rc)
HOW TO ORDER
“DP” DIFFERENTIAL PRESSURE PILOT
Specify:
• Reduced pressure range –
Example:
“DP” Pilot at 3-25 PSIG, yellow
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity
• End connections (threaded, 150/300# flanged)
9.27
• Solenoid pilot can be added for remote on/off control of
regulator
M I N I M U M O P E R AT I N G P R E S S U R E S
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve)
Minimum Differential Pressure:
10 PSI (Standard Main Valve)
3 PSI (Low Pressure Main Valve)
134
Units: inches
5.00
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PILOTS
Over Pressure Protection Methods
Using “P” and “BP” Pilots
Back Pressure Regulators for Boiler Overload Protection
REGULATING VALVES
STEAM TO ESSENTIAL SERVICES
SAFETY
VALVE
DRIP PAN
ELBOW
PILOT-OPERATED
BACK PRESSURE
REGULATOR
STEAM TO
NON-ESSENTIAL
SERVICES
PILOT-OPERATED
PRESSURE REDUCING
AND BACK PRESSURE
REGULATOR
BOILER
STEAM
SUPPLY
STEAM TO
NON-ESSENTIAL
SERVICES
HEADER
FTT
TRAP
Pressure Override Protection of Regulator Supply Lines
On multi-stage pressure reducing applications where a rise in control pressure due to failure of the final supply regulator could result in
equipment damage and/or personnel injury, a secondary pressure pilot may be added to provide override protection of a steam supply
line. During normal operation, the main pressure pilot on the 1st stage regulator provides intermediate pressure control while the
additional “monitor” pilot senses final control pressure and remains open due to a slightly higher setting than the final control pressure
setting. Should the 2nd stage regulator fail for any reason, increasing supply pressure will begin to close the monitor pressure pilot of
the 1st stage regulator, thus overriding the main control pilot preventing final supply pressure from increasing. This overpressure
protection can similarly be offered on single-stage reducing valves by protecting against failure of the main control pilot.
MAIN
PRESSURE
PILOT
PRESSURE
PILOT
(Monitor)
PRESSURE
PILOT
OUTLET
INLET
1st Stage HD REGULATOR
2nd Stage HD REGULATOR
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
135
PILOT-OPERATED
In steam systems with several applications of varying importance, a back pressure regulator may be used to prevent overloading of the
boiler by isolating non-essential loads from critical processes in the event steam demand exceeds boiler output. When steam demand
is greater than the capacity the boiler can generate, pressure in the boiler will drop, possibly upsetting the control balance in the boiler
resulting in the generation of wet steam. Using back pressure regulators on the non-essential application supply lines allows isolation
of these applications at times of peak demand by shutting off steam flow to areas deemed non-essential. This ensures that boiler
demand is not exceeded and steam flow is maintained to critical processes until demand subsides and the boiler is able to catch up.
R E G U L AT O R & P I L O T
HDP
Pilot-Operated Pressure Regulating Valve
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
REGULATING VALVES
PILOT-OPERATED
HD Regulating Valve
with “P” Pressure Pilot
• Max Inlet Pressure: 300 PSIG
• Reduced Outlet Pressure Range: 3-200 PSIG
• Min Inlet Pressures:
15 PSIG standard main valve
5 PSIG low pressure main valve
T Y P I C A L A P P L I C AT I O N S
The HD Regulator with the “P” Pressure Pilot is used
for reducing steam pressure in piping mains and
process applications. Pilot-operated regulators will
maintain constant downstream pressure even when the
inlet pressure to the regulator fluctuates or steam usage
varies.
F E AT U R E S
• The “P” Pilot can maintain downstream pressure
to ±1 PSIG
• Optional “P5” pilot can maintain pressure
to ±0.5 PSIG
• Choices of three overlapping pressure ranges
• Pressure adjusting spring can be changed with
regulator in line
• Pilot is easily installed using only four bolts
• Full port strainer and blowdown valve on pilot
adapter for ultimate protection from dirt and scale
• Watson McDaniel’s pilots can be used with other
manufacturers’ regulators
OPTIONS
• Pressure and temperature pilots can be combined
on the same regulator
• Solenoid pilot can be added for electrical on/off
control of the regulator
• Can be used with solenoid and temperature pilots
MINIMUM OPERATING PRESSURES
PRESSURE-ADJUSTING SPRING RANGES “P”
Pressure Ranges
Identifying Colors
3-25 PSIG
20-100 PSIG
80-200 PSIG
yellow
blue
red
PRESSURE-ADJUSTING SPRING RANGES “P5”
1-10 PSIG
yellow
10-25 PSIG
blue
M AT E R I A L S
Body
Cover
Gasket
Cover Screws
Pilot Adapter
Screen
Tubing
Valve Seat
Valve Disc
Diaphragm
Ductile Iron
Ductile Iron
Grafoil
Steel
Ductile Iron/Cast Steel
Stainless Steel
Copper
Hardened SST (55 Rc)
Hardened SST (55 Rc)
Phosphor Bronze
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve)
Minimum Differential Pressure:
10 PSI (Standard Main Valve)
3 PSI (Low Pressure Main Valve)
136
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R & P I L O T
HDP
Pilot-Operated Pressure Regulating Valve
D I M E N S I O N S H D - S e r i e s – inches / pounds
C*
117/8
117/8
117/8
117/8
117/8
117/8
117/8
117/8
117/8
121/2
D
61/2
61/2
7
83/4
83/4
107/8
113/4
131/4
143/4
193/4
E**
73/4
73/4
73/4
81/4
81/4
81/2
81/2
91/2
101/2
113/4
Standard P-Pilot = 5”
P5-Pilot = 8”
(lbs)
FLG
C
REGULATING VALVES
B
51/2
51/2
61/4
73/8
73/8
81/4
9
87/8
107/8
141/8
Weight
NPT
18
18
23
43
43
65
35
60
85
105
145
235
470
B
For P5 Pilot:
* For sizes 1/2” to 11/2” add 21/2” to “C” dimension;
For sizes 2” to 6” add 5” to “C” dimension.
** Add 11/2” to “E” dimension for all sizes.
E
D
HOW TO ORDER
P or P5 PRESSURE PILOT
Specify:
• Reduced pressure range
(P5 Pilot requires a special adapter block on 3” & 4” valves)
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity and pressures
of steam required
• End connections
(threaded, 150/300# flanged)
Pressure
Adjusting Screw
PRESSURE PILOT
Adjusting Spring
Downstream
Pressure
Sensing LIne
Pilot
Diaphragm
Bleed
Orifice
Pilot Valve
Control
Pressure
Line
Main Valve
Inlet
Outlet
Diaphragm
Orifice with
Clean-out Wire
HOW IT WORKS
The purpose of the pressure pilot is to control the
operation of the pressure regulating valve. A pressure
sensing line connects the pressure pilot to the
downstream side of the regulator. The pressure in the
sensing line is directed under the diaphragm in the
pressure pilot. When the pressure in the system
reaches the adjusting spring set point it pushes the
diaphragm upwards against the force of the adjusting
spring and closes the pilot valve. When the pilot valve
is shut, steam can no longer pass through to the
underside of the regulator diaphragm and the main
valve closes. When the steam pressure falls below
its set point, the pilot valve opens allowing steam
to lift the main valve diaphragm which opens up
the regulating valve.
Main Valve Diaphragm
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
137
PILOT-OPERATED
Size
1/2”
3/4”
1”
11/4”
11/2”
2”
21/2”
3”
4”
6”
Face-To-Face
NPT 150# 300#
43/8
43/8
53/8
51/2
6
1
6 /2
71/4
67/8
73/8
1
1
7 /2
8 /2
9
93/8
10
10
103/4
7
11 /8 121/2
151/8
16
R E G U L AT O R & P I L O T
HDT
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Pilot-Operated Temperature Regulating Valve
REGULATING VALVES
PILOT-OPERATED
HD Regulating Valve with
“T” Temperature Pilot
• Inlet Pressure Max: 300 PSIG
• Temperature Control Range: 60–260 F
• Min Inlet Pressures:
15 PSIG standard main valve with standard temperature pilot
5 PSIG low pressure main valve with low pressure temp. pilot
Low Pressure Temperature Pilot must be used
in conjunction with a low pressure main valve
for applications where inlet steam pressure is
less than 15 PSIG. SPECIFY WHEN ORDERING.
T Y P I C A L A P P L I C AT I O N S
The HD Regulator with the “T” Temperature Pilot is
used for controlling temperature in various processes
and systems, such as Oil Heaters, Ovens, Process
Heaters, Vats, Dryers and Jacketed Kettles.
T E M P E R AT U R E - A D J U S T I N G R A N G E S
Temperature Ranges *
Identifying Colors
60 - 120 °F (16 - 49 °C)
yellow
100 - 160 °F (38 - 71 °C)
black
F E AT U R E S
120 - 180 °F (49 - 82 °C)
blue
• Temperature adjustment made simple and easy
160 - 220 °F (71 - 104 °C)
red
200 - 260 °F (93 - 127 °C)
green
by rotating an adjustment knob to the desired
temperature setting
• Thermostatic sensing bulb comes with 8-ft. or
15-ft. capillary; optional lengths up to 25-ft. max
• Capillary is armor-protected to resist damage
• Optional stainless steel sensing bulb and capillary
• Overheat protection bellows is incorporated into
sensing bulb; 200˚F overheat protection up to 350˚F
• Can be used with Pressure Pilot for simultaneous
control of pressure and temperature
• Hardened stainless steel trim on regulator for
extended service life
• Full port strainer and blowdown valve on pilot
adapter for ultimate protection from dirt and scale
OPTIONS
• Temperature Pilot can be combined with Pressure
and Solenoid pilots
• Additional capillary lengths can be ordered in 5-ft.
increments; up to 25-ft. maximum length
• Wells* are available in 316 stainless steel
• Longer wells can be supplied
• Low pressure (under 15 PSIG) temperature pilot
• Consult factory for other options
138
* Other ranges available; consult Factory.
M AT E R I A L S
Body
Cover
Gasket
Cover Screws
Pilot Adapter
Screen
Tubing
Valve Seat
Valve Disc
Diaphragm
Ductile Iron
Ductile Iron
Grafoil
Steel
Ductile Iron/Cast Steel
Stainless Steel
Copper
Hardened SST (55 Rc)
Hardened SST (55 Rc)
Phosphor Bronze
* Thermowells:
Wells isolate sensing bulb from the process liquid and
are available in Brass or Stainless Steel. When placed
on the side of a tank or vessel, the sensing bulb can
be removed without having to drain the process fluid.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R & P I L O T
HDT
Pilot-Operated Temperature Regulating Valve
D I M E N S I O N S H D - S e r i e s – inches / pounds
B
51/2
51/2
61/4
73/8
73/8
81/4
9
87/8
107/8
141/8
C
91/4
91/4
91/4
91/4
91/4
91/4
91/4
91/4
91/4
93/4
D
61/2
61/2
7
83/4
83/4
107/8
113/4
131/4
143/4
193/4
E
61/2
61/2
81/4
71/4
71/4
71/2
73/4
81/2
91/2
103/4
Weight
NPT
18
18
23
43
43
65
(lbs)
FLG
C
REGULATING VALVES
VALVES
REGULATING
Face-To-Face
NPT 150# 300#
43/8
43/8
53/8
51/2
6
1
6 /2
71/4
67/8
73/8
1
1
7 /2
8 /2
9
93/8
10
10
103/4
7
11 /8 121/2
151/8
16
PILOT-OPERATED
Size
1/2”
3/4”
1”
11/4”
11/2”
2”
21/2”
3”
4”
6”
35
60
85
105
145
235
470
B
E
D
HOW TO ORDER
“T” TEMPERATURE PILOT
Specify:
• Temperature range from the chart or indicate the set temperature
of the process you wish to control
• The length of capillary required. 8-ft. or 15-ft. standard;
Maximum length: 25-ft. in 5-ft. increments
• Bulb type needed:
T, TU, TUBW, TUSW, TBW & TSW
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity
• End connections (threaded, 150/300# flanged)
HOW IT WORKS
The temperature pilot controls the operation of
the temperature regulating valve. The temperature
sensing bulb, which is filled with a temperature
sensitive liquid, is placed in the process fluid that is
being heated. When the temperature of the process
fluid reaches its set point, the bellows expands and
closes off the pilot valve. When the pilot valve is shut,
steam can no longer pass thru to the underside of the
regulator diaphragm, and the main valve closes.
When the process fluid cools below the set
temperature, the main valve reopens.
Temperature
Adjustment
Knob
TEMPERATURE PILOT
Bellows
Temperature
Sensing Bulb
M I N I M U M O P E R AT I N G P R E S S U R E S
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve with
Standard Temperature Pilot)
5 PSIG (Low Pressure Main Valve with
Low Pressure Temperature Pilot)
Control
Pressure
Line
Pilot Valve
Bleed
Orifice
Outlet
Inlet
Low Pressure Temperature Pilot must be used in conjunction with a
Low Pressure Main Valve for applications where inlet steam pressure
is less than 15 PSIG. SPECIFY WHEN ORDERING.
Diaphragm
Orifice with
Clean-out Wire
Main Valve
Main Valve Diaphragm
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www.watsonmcdaniel.com
139
R E G U L AT O R & P I L O T
HDA
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Air-Operated Pilot Regulating Valve
REGULATING VALVES
PILOT-OPERATED
HD Regulating Valve
with “A” Air Pilot
• Max Inlet Pressure: 300 PSIG
• Reduced Outlet Pressure Range: 3-200 PSIG
• Min Inlet Pressures:
15 PSIG standard main valve
5 PSIG low pressure main valve
Note: Temperature Range: 0-350 F when used with
PTL & PTR temperature controllers
T Y P I C A L A P P L I C AT I O N S
The HD Regulator with the “A” Air Pilot is used
for reducing steam pressure on steam mains and
process equipment. The “A” Air Pilot can also be
used in conjunction with the PTL and PTR Pneumatic
Temperature Controllers for controlling temperature in
process applications. The principal advantage of the
“A” Air Pilot over standard spring-loaded pilots is that
pressure adjustments to the regulator can be made from
a remote location. A regulator placed in a difficult to
reach or inaccessible location can be adjusted by a
remote control panel board placed in an accessible
location.
MAXIMUM CONTROL AIR PRESSURE ON AIR PILOT IS 125 PSIG
PRESSURE-ADJUSTING RANGES
Model
Pressure
Ranges
Description
A1
3-125 PSIG
1:1 ratio of steam pressure to control air pressure
Example:
With the A1 air pilot, 10 PSIG of air pressure
maintains 10 PSIG of steam pressure
A4
3-200 PSIG
4:1 ratio of steam pressure to control air pressure
Example:
With the A4 air pilot, 10 PSIG of air pressure
maintains 40 PSIG of steam pressure
A6
20-200 PSIG
6:1 ratio of steam pressure to control air pressure
Example:
With the A6 air pilot, 10 PSIG of air pressure
maintains 60 PSIG of steam pressure
F E AT U R E S
• Air Pilot can be used with PTL or PTR Pneumatic
Temperature Controller
• Pressure adjustments of the regulator can be done
from a remote location
• Air-operated pilot insures instant response and
very accurate control
• Full port strainer and blowdown valve on pilot
adapter for ultimate protection from dirt and scale
• Controls pressure settings within ±1 PSIG
OPTIONS
• Solenoid Pilot (S-Pilot) can be added for
Electrical On/Off Operation of the regulator
M I N I M U M O P E R AT I N G P R E S S U R E S
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve)
5 PSIG (Low Pressure Main Valve)
Minimum Differential Pressure:
10 PSI (Standard Main Valve)
3 PSI (Low Pressure Main Valve)
CONTROL AIR PRESSURE RANGE
A-Pilot Control Pressure:
3-125 PSIG (depending on pilot selected and
desired outlet pressure)
140
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R & P I L O T
HDA
Air-Operated Pilot Regulating Valve
D I M E N S I O N S H D - S e r i e s – inches / pounds
B
51/2
51/2
61/4
73/8
73/8
81/4
9
87/8
107/8
141/8
C*
71/2
71/2
71/2
71/2
71/2
71/2
71/2
71/2
71/2
81/4
D
61/2
61/2
7
83/4
83/4
107/8
113/4
131/4
143/4
193/4
E**
73/4
73/4
73/4
83/8
83/8
83/4
83/4
91/2
101/2
113/4
Weight
NPT
18
18
23
43
43
65
(lbs)
FLG
C
REGULATING VALVES
Face-To-Face
NPT 150# 300#
43/8
43/8
53/8
51/2
6
1
6 /2
71/4
67/8
73/8
1
1
7 /2
8 /2
9
93/8
10
10
103/4
7
11 /8 121/2
151/8
16
35
60
85
105
145
235
470
B
* Add 21/2” to “C” dimension for A4 or A6 Air Pilots on 2” thru 4” valves.
** Add 11/2” to “E” dimension for A4, and 21/4”” for A6.
E
D
M AT E R I A L S
HOW IT WORKS
Body
Cover
Gasket
Cover Screws
Pilot Adapter
Screen
Tubing
Valve Seat
Valve Disc
Diaphragm
Ductile Iron
Ductile Iron
Grafoil
Steel
Ductile Iron/Cast Steel
Stainless Steel
Copper
Hardened SST (55 Rc)
Hardened SST (55 Rc)
Phosphor Bronze
When air pressure is applied to the upper chamber
of the air pilot it exerts a downward force on the
air pilot’s diaphragm. The lower chamber of the air
pilot is connected to the outlet side of the regulator
using a sensing line. The purpose of the sensing
line is to sense the pressure on the outlet side of
the regulator. When the intended set pressure is
reached, the pilot valve closes which then closes
off the flow path of steam to the underside of the
diaphragm chamber in the regulator body. The
regulator modulates maintaining the desired
downstream pressure regardless of the amount
of steam being used.
Air Control
Line
AIR PILOT
Downstream
Pressure
Sensing LIne
Pilot
Diaphragm
Pilot Valve
Control
Pressure
Line
Main Valve
Bleed
Orifice
Inlet
Outlet
HOW TO ORDER
“A” AIR PILOT
Specify:
• Air Pilot A1, A4 or A6
• Remote Control Panel Board: PL1, PL2 or PL3
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity and pressures of steam required
• End connections (threaded, 150/300# flanged)
Diaphragm
Orifice with
Clean-out Wire
Main Valve Diaphragm
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
141
PILOT-OPERATED
Size
1/2”
3/4”
1”
11/4”
11/2”
2”
21/2”
3”
4”
6”
R E G U L AT O R & P I L O T
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
HDPT
REGULATING VALVES
PILOT-OPERATED
Pilot-Operated Pressure & Temperature Regulating Valve
HD Regulating Valve
with “P” Pressure &
“T” Temperature Pilots
•
•
•
•
Max Inlet Pressure: 300 PSIG
Reduced Outlet Pressure Range: 3-200 PSIG
Temperature Control Range: 60-260 F
Min Inlet Pressures:
15 PSIG standard main valve with standard temperature pilot
5 PSIG low pressure main valve with low pressure temp. pilot
Low Pressure Temperature Pilot must be
used in conjunction with a low pressure
main valve for applications where inlet
steam pressure is less than 15 PSIG.
SPECIFY WHEN ORDERING
T E M P E R AT U R E - A D J U S T I N G R A N G E S
Temperature Ranges *
Identifying Colors
60 - 120 °F (16 - 49 °C)
yellow
T Y P I C A L A P P L I C AT I O N S
100 - 160 °F (38 - 71 °C)
black
The HD Regulator with both the “P” Pressure Pilot and
“T” Temperature Pilot is used to simultaneously control
both pressure and temperature in process applications.
120 - 180 °F (49 - 82 °C)
blue
160 - 220 °F (71 - 104 °C)
red
200 - 260 °F (93 - 127 °C)
green
Using both the temperature and pressure pilot on the
same regulator eliminates the need for two separate
regulators to control temperature and pressure.
F E AT U R E S
• Pressure and temperature pilot combination
eliminates the need for two separate regulators
• Choice of three overlapping pressure ranges
• Pilot is installed using only four bolts
• Full port strainer and blowdown valve on pilot
adapter for ultimate protection from dirt and scale
• Watson McDaniel's pilots can be used with other
manufacturers’ valves
OPTIONS
• Solenoid Pilot can be added for electrical On/Off
control of the regulator
142
* Other ranges available; consult Factory.
PRESSURE-ADJUSTING SPRING RANGES
Pressure Ranges
Identifying Colors
3-25 PSIG
20-100 PSIG
80-200 PSIG
yellow
blue
red
MINIMUM OPERATING PRESSURES
Minimum Inlet Pressure:
15 PSIG (Standard Main Valve with
Standard Temperature Pilot)
5 PSIG (Low Pressure Main Valve with
Low Pressure Temperature Pilot)
Minimum Differential Pressure:
10 PSI (Standard Main Valve)
3 PSI (Low Pressure Main Valve)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R & P I L O T
HDPT
Pilot-Operated Pressure & Temperature Regulating Valve
D I M E N S I O N S H D - S e r i e s – inches / pounds
B
51/2
51/2
61/4
73/8
73/8
81/4
9
87/8
107/8
141/8
C
141/2
141/2
141/2
141/2
141/2
141/2
141/2
141/2
141/2
15
D
61/2
61/2
7
83/4
83/4
107/8
113/4
131/4
143/4
193/4
E
101/4
101/4
101/4
103/4
103/4
111/4
111/4
12
13
141/4
Weight (lbs)
NPT
FLG
18
18
23
35
43
43
60
65
85
105
145
235
470
REGULATING VALVES
Face-To-Face
NPT 150# 300#
43/8
43/8
53/8
51/2
6
1
6 /2
71/4
67/8
73/8
1
1
7 /2
8 /2
9
93/8
10
10
103/4
7
11 /8 121/2
151/8
16
C
B
M AT E R I A L S
Body
Cover
Gasket
Cover Screws
Pilot Adapter
Screen
Tubing
Valve Seat
Valve Disc
Diaphragm
Ductile Iron
Ductile Iron
Grafoil
Steel
Ductile Iron/Cast Steel
Stainless Steel
Copper
Hardened SST (55 Rc)
Hardened SST (55 Rc)
Phosphor Bronze
E
D
HOW IT WORKS
A pressure pilot and temperature pilot can be used
together to control the operation of the regulator.
The pressure pilot limits the outlet pressure of the
regulator when the temperature pilot calls for steam.
The temperature pilot senses the temperature of the
process that is being controlled and opens or closes
the regulator accordingly. Using a pressuretemperature pilot combination eliminates having
to use two separate valves.
Temperature
Sensing Bulb
Temperature Adjustment Knob
Pressure
PRESSURE Adjusting Screw
PILOT
HOW TO ORDER
“T” TEMPERATURE PILOT
Specify:
• Temperature range from the chart or indicate the set
temperature of the process you wish to control
• The length of capillary required; 8-ft. is standard
• Bulb type needed: T, TU, TUBW, TUSW, TBW & TSW
“P” PRESSURE PILOT
Specify:
• Pressure range from the chart
REGULATOR BODY
Specify:
• HD regulator body
• Regulator size or capacity and pressures of steam required
• End connections (threaded, 150/300# flanged)
Pressure
Pilot
Diaphragm
TEMPERATURE
PILOT
Pilot Valve
Temperature
Pilot Valve
Bleed
Orifice
Outlet
Inlet
Control
Pressure
Line
Main Valve
Main Valve Diaphragm
Diaphragm
Orifice with
Clean-out Wire
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
143
PILOT-OPERATED
Size
1/2”
3/4”
1”
11/4”
11/2”
2”
21/2”
3”
4”
6”
R E G U L AT O R S
HSP Series CAST STEEL
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
REGULATING VALVES
PILOT-OPERATED
Pilot-Operated Pressure Regulating Valve
Model
HSP Series
Sizes
1”, 11/2”, 2”, 3”, 4”
Connections
150#/300# Flange
Body Material
Cast Steel
PMO
450 PSIG
Max. Operating Pressure
TMO Max. Operating Temperature
650˚F
PMA Max. Allowable Pressure
550 PSIG @ 650˚F
TMA Max. Allowable Temperature
650˚F @ 550 PSIG
PRESSURE-ADJUSTING SPRING RANGES
Pressure Ranges
Identifying Colors
10-40 PSIG
25-100 PSIG
75-300 PSIG
yellow
blue
red
T Y P I C A L A P P L I C AT I O N S
The HSP-Series Main Valve with integral Pressure Pilot reduces
steam pressure in steam system piping mains and process
applications. This pilot-operated regulator is specifically used
in applications where the properties and benefits of Cast Steel
are desired and/or specified. Using steel as the material of
construction for the main valve body extends the temperature
ranges of the regulator. A unique two-bolt pilot adapter design
and field-reversible tubing offer even greater versatility to this
type of regulator, further reducing maintenance downtime.
These valves share the same design and proven reliability of
the Watson McDaniel HD-Series Regulators, providing extremely
accurate control of downstream system pressure even when
inlet pressure to the regulator fluctuates or steam usage varies.
F E AT U R E S
• Cast Steel body for higher pressure and temperature ratings
• New, convenient bolt-on pilot design simplifies installation
• New diaphragm design improves performance and
extends life
• Hardened stainless steel trim for extended life
• Optional Stellite trim available
• Full port strainer and blowdown valve on pilot adapter
for ultimate protection from dirt and scale
• Maintains downstream pressure + 1.0 PSIG
• Choice of three overlapping spring ranges
• Pre-mounted pilot & tubing simplifies installation
CONTROL PILOTS
Pilot Mounting
Standard pilot mounting is on the right side of the regulator
when looking into the outlet port (see diagram on opposite
page which is right mounted). For opposite mounting, please
specify when ordering. Pilot mounting on HSP regulators are
field reversible.
Pressure
The spring-adjusted Pilot is used for general purpose pressure
reducing applications.
M AT E R I A L S
Body
Cover
Diaphragm Cover
Pilot
Gaskets
Seat
Disc
Diaphragm
Mfg. Bolts
Spring
Stem
ASTM A-216 GR WCB
ASTM A-216 GR WCB
ASTM A-216 GR WCB
ASTM A-216 GR WCB
Garlock 3400/grafoil SLS
420F SS
(optional Stellite seat, consult factory)
420F SS
300 SS
SA-193 GR B7
302 SS
416 SS
LOTS
144
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R S
HSP Series CAST STEEL
Pilot-Operated Pressure Regulating Valve
D I M E N S I O N S H S P S e r i e s – inches / pounds
B
61/4
73/8
81/4
87/8
107/8
C
31/2
47/8
53/8
63/4
71/2
D
7
83/4
107/8
131/4
143/4
Weight (lbs)
NPT 150# 300#
x
40
45
x
55
60
x
75
85
x
130
145
x
215
235
Minimum Inlet Pressure:
15 PSIG (standard Main Valve)
5 PSIG (low pressure Main Valve)
REGULATING VALVES
(A) Face-To-Face
NPT 150# 300#
x
51/2
6
x
67/8
73/8
x
81/2
9
x
10
103/4
x
117/8 121/2
Minimum Differential Pressure:
10 PSIG (standard Main Valve)
3 PSIG (low pressure Main Valve)
HOW TO ORDER
REGULATOR BODY
Specify: • HSP regulator body
• Regulator size or capacity of steam required
• End connections (150#/300# flanged)
PILOT REQUIRED TO OPERATE THIS VALVE
• Pressure Pilot (Specify Range)
Specify:
10-40 PSIG - Yellow
25-100 PSIG - Blue
75-300 PSIG - Red
Example: 2” HSP, 150# FLG, 10-40 PSIG (yellow)
A
FLOW
OUT
B
C
Standard pilot mounting
is on the right side of the
regulator when looking
into the outlet port (as
shown). Pilot mounting
on HD regulators are
field reversible.
D
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
145
PILOT-OPERATED
Size
1”
11/2”
2”
3”
4”
MINIMUM OPERATING PRESSURES
NOISE ATTENUATORS
Series-A
Watson McDaniel
McDaniel reserves
reserves the
the
Watson
right to
to change
change the
the designs
designs
right
and/or materials
materials of
of its
its
and/or
products without
without notice.
notice.
products
©2010 Watson
Watson McDaniel
McDaniel Company
Company
©2002
ORIFICE PLATE
for Pressure Regulating Valves
Noise Attenuation Equipment is used to reduce unwanted or excessive noise that
commonly occurs in pressure reducing stations.
REGULATING VALVES
PILOT-OPERATED
Series-A ORIFICE PLATE
Noise Reduction Capability: 5-10 dBA
HOW IT WORKS
The Series-A Orifice Plate with its drilled orifice pattern is
installed after the pressure regulating valve to smooth out
turbulence caused by the pressure drop across the regulator.
Noise reduction levels of 5-10 dBA can typically be achieved.
I N S TA L L AT I O N
The Series-A Orifice Plate is installed between ANSI flanges
immediately after the regulator. If the regulator is a flanged unit,
the orifice plate is placed at the flange outlet connection.
Series-A
Orifice Plate
Series-A Typical Hook-up
Series A Dimensions
Orifice Plate installed
between flanges
Sensing Line
For Regulator
FLOW
A DIa.
SERIES-A
ORIFICE
PLATE
FLOW
Pressure
Reducing
Valve
.75
Series-A DIMENSION (A) – inches
Pipe Size
125# Flange
250# Flange
2”
6
7
71/2
9
11
43/16
415/16
511/16
615/16
911/16
21/2”
3”
4”
6”
Note: Other sizes available. Consult factory.
146
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NOISE ATTENUATORS
ACOUSTIC SILENCER
Series-H
for Pressure Regulating Valves
Noise Attenuation Equipment is used to reduce unwanted or excessive noise that
commonly occurs in pressure reducing stations.
Series-H ACOUSTIC SILENCER
REGULATING VALVES
Series-H Dimensions
A1
Series-H
Acoustic Silencer
B
A
Inlet
C
HOW IT WORKS
Series-H DIMENSIONS – inches
The Series-H Acoustic Silencer incorporates a Dual Diffuser
tube design. The inner tube has a drilled orifice pattern and
the outer tube contains an integral layer of sound absorbing
insulation. Noise reduction levels of 20-30 dBA can typically
be achieved.
I N S TA L L AT I O N
Model
A1
A
B
C
LCV-8
LCV-10
LCV-12
4
6
6
8
10
12
14
16
18
57
71
81
Weight
(lbs)
145
210
295
Note: Other sizes available. Consult factory.
The Series-H Diffuser Tube should be installed immediately
downstream of the regulator, as shown below.
Series-H Typical Hook-up
Pressure
Sensing Line
Gate
Valve
Gate
Valve
Separator
FLOW
Strainer
PRV
To Trap
SERIES-H
ACOUSTIC
SILENCER
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
147
PILOT-OPERATED
Noise Reduction Capability: 20-30 dBA
NOISE ATTENUATORS
Series-S
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
ACOUSTIC DIFFUSER
for Pressure Regulating Valves
Series-S ACOUSTIC DIFFUSER
REGULATING VALVES
PILOT-OPERATED
Noise Reduction Capability: 10-15 dBA
HOW IT WORKS
The Series-S Acoustic Diffuser incorporates a single tube with
a drilled orifice pattern which reduces downstream turbulence.
Noise reduction levels of 10-15 dBA can typically be achieved.
I N S TA L L AT I O N
Series-S
Acoustic Diffuser
The Series-S Diffuser Tube should be installed immediately
downstream of the regulator, as shown below.
Series-S Typical Hook-up
Gate
Valve
Pressure
Sensing Line
Gate
Valve
Separator
FLOW
Strainer
PRV
SERIES-S
ACOUSTIC
DIFFUSER
To Trap
Model Selection Chart for Series-S Diffuser
Steam
Capacity
(lbs/hr)
Valve Inlet Pressure
(PSIG)
15
20
25
30
40
1000
S-3
S-3
S-3
S-3
S-3
1500
S-3
S-3
S-3
S-3
S-3
2000
S-4
S-4
S-4
S-4
S-4
3000
S-4
S-4
S-4
S-4
S-4
4000
S-5
S-5
S-5
S-5
S-5
6000
S-6
S-6
S-6
S-6
S-6
8000
S-8
S-8
S-8
S-8
S-8
10000
S-8
S-8
S-8
S-8
S-8
Note: For higher capacity models, S-10 & S-12, consult factory.
148
50
60
75
90
100
125
150
175
200
225
250
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
S-3
S-3
S-4
S-5
S-5
S-6
S-8
S-8
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
NOISE ATTENUATORS
ACOUSTIC DIFFUSER
Series-S
for Pressure Regulating Valves
NPT x Weld
S e r i e s - S D i m e n s i o n s – inches
Inlet (A)
Model
S-5
S-6
S-8
S-10
S-12
Notes:
21/2
21/2
3
21/2
3
4
21/2
3
4
6
21/2
3
4
6
FLG/BW
B
C
D
2
2
4
4
4
4
4
4
4
4
4
4
4
6
6
6
6
6
8
8
8
8
8
12
12
12
12
12
12
12
12
12
51/2
51/2
61/2
61/2
61/2
61/2
61/2
61/2
61/2
61/2
61/2
61/2
61/2
8
8
8
8
8
10
10
10
10
10
12
12
12
12
12
12
12
12
12
131/2
131/2
131/2
131/2
131/2
131/2
131/2
161/2
161/2
161/2
161/2
161/2
161/2
14
14
14
14
14
17
17
17
17
17
14
14
14
14
14
21
21
21
21
23/8
23/8
41/2
41/2
41/2
41/2
41/2
41/2
41/2
41/2
41/2
41/2
41/2
55/8
55/8
55/8
55/8
55/8
85/8
85/8
85/8
85/8
85/8
123/4
123/4
123/4
123/4
123/4
123/4
123/4
123/4
123/4
1)150# & 300# flanges available.
2) Other sizes available; consult factory.
C
B
D
A
NPT
REGULATING VALVES
S-4
3/4
1
3/4
1
11/4
11/2
2
3/4
1
11/4
11/2
2
21/2
11/4
11/2
2
21/2
3
11/2
2
21/2
3
4
2
21/2
3
4
6
21/2
3
4
6
FLG
NPT x Weld Dimensions
Flanged x Weld
A
Flanged
NPT x Flanged
A
NPT
Flanged x Flanged
A
Flanged
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
149
PILOT-OPERATED
S-3
NPT
Outlet
R E G U L AT O R S
HD & HSP Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Full Port Regulating Valves – Capacities
C A PA C I T I E S – Steam (lbs/hr)
REGULATING VALVES
PILOT-OPERATED
Inlet
Pressure
(PSIG)
Outlet
Pressure
(PSIG)
FULL PORT
1/2"
3/4"
1"
11/4"
11/2"
2"
21/2"
3"
4"
6"
Cv Factors
3.8
6.7
11
15
21
37
55
71
113
241
5
85
80
115
105
90
150
140
100
160
140
125
190
175
140
210
190
170
250
225
200
275
250
225
350
300
250
400
350
275
475
425
300
575
475
400
675
575
425
750
700
500
925
825
625
1100
925
650
1275
1000
750
1450
1300
1075
1575
1450
1350
1750
1650
1200
2045
1945
1780
150
140
200
180
160
260
240
175
280
240
200
325
300
250
375
325
300
450
425
350
500
450
375
600
500
425
700
650
500
850
775
525
1000
825
700
1200
1000
750
1300
1200
875
1650
1475
1100
1900
1600
1150
2250
1800
1300
2500
2300
1900
2800
2500
2400
3100
2900
2100
3605
3425
3140
250
230
325
300
275
425
400
300
475
400
375
550
500
400
625
550
500
775
700
600
800
750
650
1000
850
700
1200
1100
800
1350
1250
850
1650
1350
1150
1950
1700
1200
2100
2000
1400
2700
2400
1800
3100
2700
1900
3700
2900
2100
4200
3700
3100
4600
4200
3900
5100
4700
3500
5920
5625
5155
350
310
450
400
375
575
550
400
600
550
500
750
700
500
850
750
675
1050
975
800
1100
1000
850
1350
1150
1000
1650
1500
1100
1900
1700
1200
2300
1900
1600
2700
2300
1700
3000
2700
1900
3700
3300
2500
4300
3600
2600
5000
4000
2900
5700
5100
4300
6200
5700
5300
6900
6500
4800
8075
7670
7030
500
440
600
575
525
850
800
600
900
800
700
1000
900
800
1200
1000
950
1500
1300
1100
1500
1400
1200
1900
1600
1400
2300
2000
1500
2600
2400
1600
3200
2600
2200
3700
3200
2300
4100
3800
2700
5200
4600
3500
6000
5100
3600
7100
5600
4100
8000
7100
6000
8700
8000
7400
9700
9100
6700
11310
10740
9840
800
770
1100
1000
900
1500
1400
1000
1600
1400
1200
1800
1700
1300
2100
1800
1600
2600
2400
2000
2700
2500
2100
3300
2800
2500
4100
3600
2700
4600
4300
2900
5600
4600
3900
6600
5700
4100
7300
6700
4800
9100
8200
6200
10600
9000
6400
12500
9900
7300
14100
12600
10600
15400
14100
13100
17100
16000
11900
19220
18925
17340
1200
1100
1650
1500
1300
2200
2100
1600
2400
2100
1900
2700
2500
2000
3100
2700
2500
3800
3600
3000
4100
3800
3200
5000
4200
3700
6000
5400
4100
6900
6400
4300
8300
6900
5800
9800
8500
6100
10800
10000
7100
14000
12200
9200
15800
13400
9500
18600
14700
10800
21000
18700
15700
22900
21000
19500
25500
23800
17600
29610
28130
25780
1600
1500
2100
2000
1800
2800
2700
2000
3100
2700
2400
3500
3200
2600
4000
3500
3200
5000
4600
3900
5200
4900
4100
6400
5400
4700
7800
6900
5200
8900
8200
5600
10800
8900
7400
12700
10900
7900
14000
12900
9200
17500
15700
11900
20400
17400
12300
24000
18900
14000
27100
24100
20300
29500
27200
25200
32900
30800
22800
38230
36320
33275
2600
2400
3600
3100
2800
4600
4300
3200
4900
4300
3800
5600
5200
4200
6400
5600
5100
7900
7300
6200
8300
7800
6500
10300
8700
7600
12400
11000
8300
14200
13100
8900
17200
14100
11800
20200
17400
12600
22200
20500
14700
28000
25000
19000
32400
27700
19600
38200
30100
22200
43100
38400
32300
47000
43300
40100
53400
49000
36200
60840
57800
52960
5500
5100
7800
6700
6000
9900
9100
6900
10300
9100
8200
12000
11100
8900
13700
12000
10800
16900
15600
13200
17800
16600
14000
21900
18500
16100
26500
23600
17800
30300
27900
19000
36600
30100
25200
43100
37100
27000
47500
43800
31300
59500
53500
40400
69100
59000
41900
81400
64300
47500
92000
81900
68900
100200
92300
85500
111800
104600
77300
129750
123270
112950
7
10
12
15
20
25
30
40
50
60
75
90
100
125
150
175
200
225
250
300
0
2
0
2
3
0
2
5
0
4
7
0-3
5
8
0-5
10
12
0-7
10
15
0-12
15
20
0-18
25
30
0-20
30
40
0-30
35
50
0-35
50
60
0-45
60
75
0-50
60
80
0-60
75
100
0-75
100
125
0-85
125
150
0-100
125
150
0-120
150
175
0-130
150
200
0-160
175
200
Note: For inlet pressures in shaded area, use low pressure main valve and low pressure temperature pilot.
150
R E G U L AT O R S
HD & HSP Series
Reduced Port Regulating Valves – Capacities
C A PA C I T I E S – Steam (lbs/hr)
Inlet
Pressure
(PSIG)
Outlet
Pressure
(PSIG)
Cv Factors
10
12
15
20
25
30
40
50
60
75
90
100
125
150
175
200
225
250
300
3/4"
1"
11/4"
11/2"
2"
21/2"
3"
4"
6"
1.4
3.3
5.6
7.8
13.3
18.8
25.9
41.7
74
163
15
13
21
20
19
29
28
25
35
33
29
43
41
37
57
51
47
70
67
59
81
76
66
105
99
78
135
118
88
153
143
98
195
164
132
229
197
146
255
235
176
322
294
221
381
329
243
449
360
265
509
459
389
560
493
416
628
588
441
755
715
655
35
32
48
46
44
70
68
60
83
78
68
102
98
88
134
120
111
166
158
139
190
180
155
248
199
183
318
277
208
360
338
230
460
387
312
540
465
345
600
554
416
760
693
518
900
775
575
1060
849
625
1200
1082
917
1319
1162
980
1480
1386
1040
1775
1690
1550
59
53
82
79
74
117
115
102
141
133
115
173
166
149
227
204
188
282
269
235
323
305
263
420
367
311
539
470
353
611
573
390
780
657
529
916
789
585
1018
940
706
1290
1176
882
1527
1315
975
1800
1440
1060
2037
1836
1556
2238
1972
1663
2511
2352
1764
3015
2865
2625
82
75
115
110
104
164
160
142
197
185
160
241
232
208
317
284
262
393
375
328
450
426
366
585
511
433
751
655
491
851
798
543
1086
916
737
1277
1100
815
1419
1310
983
1796
1638
1229
2128
1831
1385
2505
2006
1476
2837
2557
2167
3117
2747
2316
3498
3276
2457
4200
3990
3655
140
128
195
187
177
279
274
242
335
316
272
410
395
354
541
483
447
670
640
559
768
726
625
998
872
739
1280
1117
838
1451
1361
926
1853
1561
1257
2177
1874
1389
2419
2234
1676
3063
2793
2095
3628
3123
2316
4272
3421
2518
4838
4360
3695
5360
4684
3950
5964
5586
4190
7160
6800
6235
197
181
276
265
250
395
387
342
473
446
385
580
558
500
764
684
632
948
905
790
1085
1025
883
1410
1232
1044
1809
1579
1184
2051
1924
1309
2619
2207
1777
3077
2648
1964
3419
3158
2367
4329
3948
2961
5128
4414
3274
6939
4835
3558
6838
6164
5223
7514
6621
5583
8431
7896
5922
10120
9615
8810
272
249
381
365
344
544
533
471
653
615
530
800
769
690
1053
942
870
1305
1246
1088
1495
1413
1216
1943
1698
1439
2492
2175
1632
2826
2651
1804
3608
3040
2448
4239
3649
2705
4710
4351
3263
5964
5439
4079
7065
6081
4510
8320
6661
5606
9420
8492
7195
10351
9121
7692
11614
10878
8159
13945
13250
12140
438
401
613
587
554
876
858
758
1051
990
854
1287
1238
1111
1696
1517
1401
2102
2006
1751
2408
2275
1958
3128
2734
2317
4013
3502
2627
4550
4268
2904
5809
4895
3941
6825
5874
4357
7584
7006
5254
9603
8757
6568
11376
9791
7261
13396
10725
7893
15168
13672
11584
16667
14686
12384
18700
17514
13136
22450
21330
19545
777
712
1088
1042
983
1554
1523
1346
1865
1758
1515
2284
2198
1972
3009
2692
2486
3730
3561
3108
4273
4037
3475
5551
4852
4111
7121
6216
4662
8074
7573
5154
10308
8687
6993
12112
10425
7731
13458
12432
9324
17041
15540
11655
20187
17374
12885
23771
19032
14008
26916
24262
20557
29577
26061
21976
33184
31080
23310
39840
37850
34680
1712
1569
2396
2296
2165
3423
3354
2964
4108
3873
3336
5031
4841
4343
6629
5929
5477
8215
7843
6846
9411
8892
7654
12227
10688
9056
15686
13692
10269
17786
16682
11353
22706
19135
15404
26680
22962
17029
29644
27384
20538
37536
34230
25672
44467
38270
28382
52362
41923
30855
59288
53442
45232
65150
57405
48409
73095
68460
51345
87760
83370
76400
REGULATING VALVES
7
0
2
0
2
3
0
2
5
0
4
7
0-3
5
8
0-5
10
12
0-7
10
15
0-12
15
20
0-18
25
30
0-20
30
40
0-30
35
50
0-35
50
60
0-45
60
75
0-50
60
80
0-60
75
100
0-75
100
125
0-85
125
150
0-100
125
150
0-120
150
175
0-130
150
200
0-160
175
200
1/2"
Note: For inlet pressures in shaded area, use low pressure main valve and low pressure temperature pilot.
151
PILOT-OPERATED
5
REDUCED PORT
Direct-Operated Pressure & Temperature
Regulating Valves
DIRECT-OPERATED
Pressure
Regulators
REGULATING VALVES
Temperature
Regulators
Relief Valves
152
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Direct-Operated Pressure & Temperature
Regulating Valves
Direct-Operated Regulators are used for controlling pressure and temperature in a variety of applications.
PRESSURE REGULATORS
O Series
Cast Iron
3/8” – 2”
The O Series, with Cast Iron body and Hardened Stainless internals, is our most popular and
economical solution for reducing pressure in STEAM systems. It is also suitable for Air, Water, Oil
as well as other Liquids and Gases.
The B-Series is primarily used for reducing pressure in WATER systems. It is also suitable for Air, Oil,
as well as other Liquids and Gases. The B-Series offers higher capacity than the O-Series.
The 402 & 403 are pilot-operated, piston-actuated, pressure regulators primarily used for reducing pressure
in STEAM systems. This regulator can be equipped with an optional internal sensing line which simplifies
installation. The 403 Series has all stainless steel internals for high-pressure applications up to 450 PSIG.3
162-163
Relief & Back Pressure Valves - Water, Liquids & Air
The R Series & 10691 Series are economically-priced Back Pressure Relief Valves for
Liquid service. Relief Valves/Back Pressure Valves are used to maintain a specific
back pressure or to protect systems from an over-pressure condition.
164-165
Relief & Back Pressure Valves - Water, Liquids & Air
The 3040 Back Pressure Relief Valve offers a much higher capacity than the R Series.
Used for Liquid service. Relief Valves protect systems from over-pressurized conditions.
TEMPERATURE REGULATING VALVES
W91 & W94 Series
166-183
Self-Operating Temperature Regulating Valves - Heating/Cooling
The W91/W94 Series Temperature Regulating Valves are used for controlling
temperatures in industrial and HVAC applications.
W91/W94 Design & Operation
Typical Applications
How to Order
Specifications & Options
Bronze, Cast Iron
1/2” – 4”
166-170
171
172
173-183
153
DIRECT-OPERATED
160-161
Pressure Regulating Valve - STEAM & Air
3040 Series
Bronze,
Cast Iron
1/2” – 2”
REGULATING VALVES
The 455 is ideally suited for reducing pressure in STEAM applications and requires only 5 PSIG
minimum inlet pressure. Excellent for use in steam systems that contain large amounts of scale
that may cause failure in pilot-operated regulators.
With a slight modification to the internal mechanism, the 455 can be used for Liquid systems.
BACK PRESSURE-RELIEF VALVES
R Series & 10691 Series
Bronze
1/2” – 3”
158-159
Pressure Regulating Valve - STEAM, Air, Water & other Gases
402 & 403 Series
Ductile Iron
1/2” – 4”
156-157
Pressure Regulating Valve - WATER, Air, Oil, other Liquids & Gases
455 Series
Bronze,
Cast Iron
1/2” – 4”
154-155
Pressure Regulating Valve - STEAM, Water, Air, Oil, other Liquids & Gases
B Series
Bronze,
Cast Iron
1/2” – 4”
Page No.
R E G U L AT O R S
“ O” Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Model
Service
Sizes
Connections
Body Material
Seat & Disc
Diaphragm
“O” Series
Steam, Air, Water & Other Liquids
3/8”, 1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”
NPT
Cast Iron
Hardened 420 Stainless Steel
Phosphor Bronze - Steam
Neoprene/Nylon (composition) - Water, Air & Oil (250˚F max)
Viton (optional) - Water, Air & Oil (300˚F max)
Max. Inlet Pressure
Min. Inlet Pressure
Max. Diff. Pressure
Min. Diff. Pressure
250 PSIG
15 PSIG
125 PSI
15 PSI
DESIGN PRESSURE/TEMPERATURE RATING – PMA/TMA
NPT
250 PSIG @ 450˚F
T Y P I C A L A P P L I C AT I O N S
The “O” Series Pressure Regulating Valves are used for reducing
pressure in steam, air and water systems. Commonly used in
heating and other process applications.
F E AT U R E S & O P T I O N S
• Hardened stainless steel seat and disc for extended
HOW TO SIZE/ORDER
service life (55 Rc)
• Neoprene & Nylon (composition) fiber diaphragm for water,
oil and air service; 250˚F maximum temperature
• Viton diaphragm for up to 300ºF service for water, oil
& air service
• Phosphor Bronze diaphragm for steam service;
Neoprene for water, oil & air
• Double spring available for extended outlet pressure range
stainless steel strainer on 3/4” HC, 1”,
• Integral
11/4”, 11/2” & 2”
From the Capacity chart, find the inlet pressure and required
regulator outlet pressure. Follow across chart to nearest capacity of
application service medium that meets or slightly exceeds demand
requirements. Follow vertically up to determine appropriate size.
When exact application values are not shown, interpolation
between values is acceptable. From the Spring Ranges chart,
select the ideal spring range that accommodates the required
outlet set pressure, confirm that system pressure requirements
can be accommodated by valve. Example:
Application: 200 lbs/hr of 100 PSIG Steam reduced to 30 PSIG
Size/Model: 1/2” “O” Series, 10-50 PSIG spring range
P R E S S U R E - A D J U S T I N G S P R I N G R A N G E S – Spring No. & Color Code
Size
3/4” HC
3
red
4
green
1”
7
red/green
8
red/blue
11/4”
7
red/green
8
red/blue
11/2”
8
red/blue
9
red/yellow
2”
8
red/blue
9
red/yellow
14
black/yellow
–
–
–
–
–
–
–
–
–
–
5
blue
6
yellow
9
red/yellow
10
green/blue
9
red/yellow
10
green/blue
10
green/blue
11
green/yellow
10
green/blue
11
green/yellow
9
red/yellow
10
green/blue
9
red/yellow
10
green/blue
9
red/yellow
10
green/blue
–
–
–
–
–
–
–
–
–
–
0-75
–
–
–
30-130
–
–
–
7, red/green
8, red/blue
8, red/blue
9, red/yellow
Outlet
Pressure
3/8”
13
blue/yellow
1/2”
13
blue/yellow
3/4”
13
blue/yellow
10-30
–
–
–
10-50
14
black/yellow
14
black/yellow
30-50
–
40-85
40-100
Single Spring
0-10
100-200
Double
Spring
DIRECT-OPERATED
REGULATING VALVES
Pressure Regulating Valve
8, red/blue
8, red/blue
8, red/blue
8, red/blue
9, red/yellow
9, red/yellow
9, red/yellow
9, red/yellow
9, red/yellow
9, red/yellow
9, red/yellow
9, red/yellow
10, green/blue 10, green/blue 10, green/blue 10, green/blue
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
154
www.watsonmcdaniel.com
R E G U L AT O R S
“ O” Series
Pressure Regulating Valve
DIMENSIONS & WEIGHTS –
Double Spring
Outline
inches/pounds
Size
A
B
C
C
Double Spring
Weight
(lbs)
3/8"
1/2"
3/4"
3/4" HC
1"
11/4"
11/2"
2"
41/4
35/8
35/8
35/8
41/2
41/2
61/2
61/2
61/2
61/2
61/2
8
81/2
81/2
83/4
83/4
8
8
8
10
101/2
101/2
12
12
121/2
13
13
141/2
141/2
8
8
8
15
18
18
40
40
B
C
C A PA C I T I E S – Steam (lbs/hr); *Air (SCFM); *Water (GPM)
Inlet Outlet
3/8”, 1/2”, 3/4”
Press. Press. Steam
Air
Water
15
20
30
50
100
125
150
200
250
2
5
5
10
15
5
10
20
5
25
40
30
50
70
30
50
70
100
30
50
70
100
120
30
50
70
100
50
70
125
46
38
65
61
45
83
83
71
121
121
87
214
214
195
261
261
261
201
307
307
307
298
239
401
401
401
401
494
494
494
26
21
36
34
25
46
46
40
67
67
49
119
119
109
145
145
145
112
171
171
171
166
133
222
222
222
222
274
274
274
6
4
8
6
4
10
10
6
13
10
6
17
14
11
19
17
15
10
22
20
18
14
11
26
24
23
20
28
27
22
3/4” HC **
Steam
Air
Water
92
75
130
123
90
167
167
142
242
242
174
428
428
275
522
522
522
402
615
615
615
596
478
802
802
802
802
988
988
988
51
42
72
69
51
93
93
79
134
134
97
238
238
154
290
290
290
225
341
341
341
333
267
445
445
445
445
549
549
549
11
9
15
13
9
20
18
13
27
20
13
33
28
18
39
35
30
20
44
40
36
28
22
52
49
46
40
57
54
45
Steam
1”
Air
Water
130
106
184
174
128
236
236
201
342
342
247
607
607
390
739
739
739
569
871
871
871
844
677
1135
1135
1135
1135
1400
1400
1400
73
59
102
97
72
131
131
112
190
190
138
337
337
218
410
410
410
318
484
484
484
471
378
630
630
630
630
777
777
777
16
13
22
18
13
28
25
18
38
28
18
47
40
25
55
49
42
28
62
57
51
40
31
74
69
65
57
80
76
63
Inlet/Outlet Pressures (PSIG)
Steam
11/4”
Air
Water
145
119
205
194
143
264
264
225
382
382
276
678
678
436
826
826
826
636
974
974
974
943
756
1269
1269
1269
1269
1565
1565
1565
81
66
114
109
80
147
147
126
212
212
154
376
376
244
458
458
458
355
540
540
540
527
422
705
705
705
705
869
869
869
18
14
25
20
14
32
28
20
42
32
20
53
45
28
62
55
47
32
69
63
57
45
35
83
78
72
63
90
85
71
* Air and water capacities are based on using elastomeric diaphragms.
** 3/4” HC is high-capacity version of standard 3/4” valve.
Note: For capacities of other gases multiply the air capacities by the following factors: Argon–0.85
Steam
11/2”
Air
Water
Steam
2”
Air
Water
180
147
254
241
177
327
327
278
473
473
341
839
839
540
1021
1021
1021
787
1204
1204
1204
1167
935
1570
1570
1570
1570
1935
1935
1935
100
82
141
134
99
181
181
155
263
263
191
466
466
301
567
567
567
440
668
668
668
652
523
871
871
871
871
1074
1074
1074
22
18
30
25
18
39
35
25
53
39
25
66
55
35
76
68
58
39
86
78
70
55
43
102
96
89
78
111
105
88
199
163
281
266
196
362
362
308
523
523
377
928
928
597
1130
1130
1130
871
1332
1332
1332
1291
1035
1737
1737
1737
1737
2141
2141
2141
111
91
156
149
109
201
201
172
291
291
211
515
515
333
627
627
627
486
740
740
740
721
578
964
964
964
964
1189
1189
1189
25
19
34
27
19
43
39
27
58
43
27
73
61
39
84
75
64
43
95
87
78
61
47
113
106
99
87
123
116
97
CO2 –0.81
Helium–2.69
Nitrogen–1.02
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
155
DIRECT-OPERATED
A
REGULATING VALVES
FLOW
R E G U L AT O R S
B Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Pressure Regulating Valve
Model
Service
Sizes
Connections
Body Material
Disc
DIRECT-OPERATED
REGULATING VALVES
Diaphragm
Max. Inlet Pressure
Min. Inlet Pressure
Max. Diff. Pressure
Min. Diff. Pressure
B Series
Water, Air, Oil, Other Gases & Liquids
1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”,
21/2”, 3”, 4”
NPT, 125# & 250# Flanged
1/2”– 21/2” Bronze
3”& 4”
Cast Iron
Neoprene (standard) - 200˚F max
Viton (optional) - 300˚F max
Neoprene/Nylon - 200˚F max
Viton (optional) - 300˚F max
250 PSIG
10 PSIG
125 PSI
20% of Inlet Pressure
DESIGN PRESSURE/TEMPERATURE RATING – PMA/TMA
NPT
125# FLG
250# FLG
250 PSIG @ 400˚F
125 PSIG @ 450˚F
250 PSIG @ 450˚F
PRESSURE-ADJUSTING SPRING RANGES
T Y P I C A L A P P L I C AT I O N
Outlet Pressure (PSIG)
Spring No.
1-12
5-35
20-70
40-125
4*
3
2
1
The B Series Pressure Regulating Valves are used for reducing
pressure in air and water systems. These regulators are
commonly found in industrial plants, apartment buildings,
water supply systems, schools and underground water
distribution systems.
* 1/2” – 1” only
F E AT U R E S & O P T I O N S
• Diaphragm, disc and cup packing available in Viton for
300ºF service (optional)
• Balanced pressure regulator allows accurate control even
when incoming pressure fluctuates
• Internally senses pressure – no external sensing
line required
• Soft disc in Neoprene or Viton for Class-V shut-off rating
C
D
HOW TO SIZE/ORDER
From the Capacity chart, find the inlet pressure and required
regulator outlet pressure. Follow across chart to nearest capacity of
application service medium that meets or slightly exceeds demand
requirements. Follow vertically up to determine appropriate size.
When exact application values are not shown, interpolation
between values is acceptable. From the Spring Ranges chart,
select the ideal spring range that accommodates the required
outlet set pressure. Confirm that system pressure requirements
can be accommodated by valve. Example:
Application: 35 GPM of 70 PSIG Water reduced to 20 PSIG
Size/Model: 1” B-Series, 5-35 PSIG spring range
156
B
FLOW
A
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R S
B Series
Pressure Regulating Valves
DIMENSIONS & WEIGHTS –
Size
1/2", 3/4”
1"
11/4"
11/2"
2"
NPT
Threaded
33/8
35/8
41/4
43/4
57/8
21/2"
61/2
Face-to-Face
A
125#
Flanged
101/4
3"
4"
inches/pounds
11
135/8
13
B
C
17/8
21/4
23/8
21/2
33/8
9
91/2
101/2
103/4
115/8
D
Spring Case
Dia. (in.)
5
5
63/4
63/4
63/4
41/4
123/4
63/4
30
41/2
211/2
53/4
23
91/4
91/4
125
182
250#
Flanged
Weight
(lbs)
7
8
13
15
20
Inlet Outlet
1/2”
Press. Press. Water
Air
10
20
30
50
70
100
125
150
200
250
5
5
10
15
5
10
20
5
25
40
10
30
50
30
50
70
30
50
100
30
50
100
125
70
100
125
100
125
5.5
9.8
8.0
5.5
12.5
11.3
8.0
16.8
12.5
8.0
19.3
15.8
11.3
21.0
17.5
13.8
24.3
21.5
12.5
27.5
25.0
17.5
12.5
28.5
25.0
21.5
30.8
28.0
25
48
43
30
68
63
48
98
88
63
128
125
95
175
165
135
213
213
140
250
250
205
153
325
263
223
403
393
3/4”
Water Air
10
18
14
10
23
20
14
30
23
14
35
28
20
38
32
25
44
39
23
50
45
32
23
51
45
39
55
50
45
86
77
54
122
113
86
176
158
113
230
225
171
315
297
243
383
383
252
450
450
369
275
585
473
401
725
707
1”
Water
Air
13
23
19
13
30
27
19
40
30
19
46
38
27
50
42
33
58
52
30
66
60
42
30
68
60
52
74
67
60
114
102
72
162
150
114
234
210
150
306
300
228
420
396
324
510
510
336
600
600
492
366
780
630
534
966
942
Inlet/Outlet Pressures (PSIG)
11/4”
Water
Air
11/2”
Water
Air
Water
Air
22
39
32
22
50
45
32
67
50
32
77
63
45
84
70
55
97
86
50
110
100
70
50
114
100
86
123
101
33
59
48
33
75
68
48
101
75
48
116
95
68
126
105
83
146
129
75
165
150
105
75
171
150
129
185
168
55
98
80
55
125
113
80
168
125
80
193
158
113
210
175
138
243
215
125
275
250
175
125
285
250
215
308
280
250
475
425
300
675
625
475
975
875
625
1275
1250
950
1750
1650
1350
2125
2125
1400
2500
2500
2050
1525
3250
2625
2225
4025
3925
100
190
170
120
270
250
190
390
350
250
510
500
380
700
660
540
850
850
560
1000
1000
820
610
1300
1050
890
1610
1570
150
285
255
180
405
375
285
585
525
375
765
750
570
1050
990
810
1275
1275
840
1500
1500
1230
915
1950
1575
1335
2415
2355
2”
Note: For capacities of other gases multiply the air capacities by the following factors: Argon–0.85
21/2”
Water
Air
Water
Air
Water
Air
88
156
128
88
200
180
128
268
200
128
308
252
180
336
280
220
388
344
200
440
400
280
200
456
400
344
492
448
132
234
192
132
300
270
192
402
300
192
462
378
270
504
420
330
582
516
300
660
600
420
3000
684
600
516
738
672
600
1140
1020
720
1620
1500
1140
2340
2100
1500
3060
3000
2280
4200
3960
3240
5100
5100
3360
6000
6000
4920
3660
7800
6300
5340
9660
9420
176
312
256
176
400
360
256
536
400
256
616
504
360
672
560
440
776
688
400
880
800
560
400
912
800
688
984
896
800
1520
1360
960
2160
2000
1520
3120
2800
2000
4080
4000
3040
5600
5280
4320
6800
6800
4480
8000
8000
6560
4880
10400
8400
7120
12880
12560
CO2 –0.81
400
760
680
480
1080
1000
760
1560
1400
1000
2040
2000
1520
2800
2640
2160
3400
3400
2240
4000
4000
3280
2440
5200
4200
3560
6440
6280
3”
4”
Helium–2.69
Nitrogen–1.0
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
157
DIRECT-OPERATED
REGULATING VALVES
C A PA C I T I E S – Water (GPM); Air (SCFM)
R E G U L AT O R S
455 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Pressure Regulating Valve
DIRECT-OPERATED
REGULATING VALVES
Model
Service
Sizes
Connections
Body Material
455 Series
Steam, Water, Air & Other Gases
1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”, 21/2”, 3”, 4”
NPT, 125# & 250# Flanges
1/2”– 11/2” Bronze
2”– 4” Cast Iron
Stainless Steel
Neoprene/Nylon
250 PSIG
5 PSIG
125 PSI
20% of Inlet Pressure
Seat & Disc
Diaphragm
Max. Inlet Pressure
Min. Inlet Pressure
Max. Diff. Pressure
Min. Diff. Pressure
DESIGN PRESSURE/TEMPERATURE RATING – PMA/TMA
NPT
125# FLG
250# FLG
250 PSIG @ 400˚F
125 PSIG @ 450˚F
250 PSIG @ 450˚F
F E AT U R E S
PRESSURE-ADJUSTING SPRING RANGES
Size
1/ ”
2
– 11/2”
2” – 4”
Outlet
Pressure (PSIG)
Spring
No.
Spring
Case Dia. (in.)
1-6
5-20
15-45
40-70
60-125
1-6
5-20
15-45
40-70
60-125
5
3
2
1
1
4
4
3
3
2
6
6
6
6
5
13
9
9
7
7
• Operates with minimum inlet pressures of 5 PSIG
• Stainless steel internals
• Excellent for use in steam systems that contain large
amounts of scale and other contamination
• Balance valve for more precise control of downstream
pressure
Sensing Line
Connection
T Y P I C A L A P P L I C AT I O N S
The 455 Series are balanced, Externally-Sensed Pressure
Regulating Valves are used for reducing pressure in steam,
air and water systems. Commonly used in heating and other
process applications. Externally-sensed regulators are often more
accurate than internally-sensed regulators because the sensing
line is connected close to the process it is intending to control
and is far enough away from the outlet of the regulator to not be
affected by turbulence.
C
HOW TO SIZE/ORDER
From the Capacity chart, find the inlet pressure and required
regulator outlet pressure. Follow across chart to nearest capacity
of application service medium that meets or slightly exceeds
demand requirements. Follow vertically up to determine
appropriate size. When exact application values are not shown,
interpolation between values is acceptable. From the Spring
Ranges chart, select the ideal spring range that accommodates
the required outlet set pressure. Confirm that system pressure
requirements can be accommodated by valve. Example:
Application: 1000 lbs/hr of 20 PSIG Steam reduced to 5 PSIG
Size/Model: 11/2” 455-Series, 1-6 PSIG spring range
158
B FLOW
A
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R S
455 Series
Pressure Regulating Valve
DIMENSIONS & WEIGHTS –
Size
NPT
Threaded
1/2"
3/4"
1"
11/4"
41/4
41/4
41/8
5
11/2"
2"
21/2"
51/4
91/2
Face-to-Face
A
125#
Flanged
250#
Flanged
B
C
Sensing
Line
Connection
NPT
23/8
23/8
23/8
31/8
101/4
101/4
101/4
103/4
1/4”
1/4”
1/4”
1/4”
15
15
15
18
Weight
(lbs)
107/8
111/4
33/8
53/4
61/4
11
181/2
183/4
1/4”
3/8”
3/8”
20
75
95
107/8
121/2
115/8
131/8
71/8
81/4
191/4
20
3/8”
3/8”
135
158
C A PA C I T I E S – Steam (lbs/hr); Water (GPM)
Inlet Outlet
1/2”
3/4”
1”
Press. Press. Steam Water Steam Water Steam Water
5
10
20
30
50
75
100
125
150
200
250
2
53
2
95
5
73
0-5
157
10
125
0-10 200
20
145
25
107
0-20 295
30
245
40
185
0-30 402
50
327
60
255
0-50 522
60
455
80
325
0-60 635
70
575
100 420
0-70 750
100 612
125 435
0-100 977
125 850
0-125 1180
4.3
7.1
5.6
9.7
7.9
11.2
7.9
5.6
13.7
11.2
7.9
16.8
12.5
9.7
17.7
15.8
11.2
20.2
18.5
12.5
22.4
17.7
12.5
25.0
21.7
28.0
95
171
131
283
225
360
261
193
531
441
333
724
589
459
940
819
585
1143
1035
756
1350
1102
783
1759
1530
2124
7.8
12.7
10.1
17.4
14.2
20.1
14.2
10.1
24.6
20.1
14.2
30.2
22.5
17.4
31.8
28.5
20.1
36.3
33.4
22.5
40.2
31.8
22.5
45.0
39.0
50.3
191
342
263
565
450
720
522
385
1062
882
666
1447
1177
918
1879
1638
1170
2286
2070
1512
2700
2203
1566
3517
3060
4248
15.6
25.0
20.0
35.0
28.0
40.0
28.0
20.0
49.0
40.0
28.0
60.0
45.0
35.0
64.0
57.0
40.0
73.0
67.0
45.0
80.0
64.0
45.0
90.0
78.0
101
Inlet/Outlet Pressures (PSIG)
11/4”
Steam Water
11/2”
Steam Water
276
494
380
816
650
1040
754
556
1534
1274
962
2090
1700
1326
2714
2366
1690
3302
2990
2184
3900
3182
2262
5080
4420
6136
403
722
555
1193
950
1520
1102
813
2242
1862
1406
3055
2485
1938
3967
3458
2470
4826
4370
3192
5700
4651
3306
7425
6460
8968
22.5
37.0
29.0
50.0
41.0
58.0
41.0
29.0
71.0
58.0
41.0
87.0
65.0
50.0
92.0
82.0
58.0
105
96.0
65.0
116
92.0
65.0
130
113
145
2”
21/2”
3”
4”
Steam Water Steam Water Steam Water Steam Water
33.0 572
54.0 1026
42.0 788
75.0 1696
60.0 1350
85.0 2160
60.0 1566
42.0 1156
104 3186
85.0 2646
60.0 1998
127 4342
95.0 3532
74.0 2754
134 5638
120 4914
85.0 3510
153 6858
141 6210
95.0 4536
170 8100
134 6610
95 4698
190 10552
165 9180
212 12744
47.0
76.0
60.0
105
85.0
121
85.0
60.0
148
121
85.0
181
135
105
191
171
121
218
200
135
241
191
135
270
234
302
890
1596
1226
2638
2100
3360
2436
1798
4956
4116
3108
6754
5494
4284
8770
7644
5460
10668
9660
7056
12600
10282
7308
16414
14280
19824
73.0
119
94.0
163
133
188
133
94.0
230
188
133
282
210
163
297
266
188
339
311
210
376
297
210
420
364
470
1166 95.0 1484
2090 156 2660
1606 123 2044
3454 213 4396
2750 174 3500
4400 246 5600
3190 174 4060
2354 123 2996
6490 301 8260
5390 247 6860
4070 174 5180
8844 369 11256
7194 275 9156
5610 213 7140
11484 389 14616
10010 348 12740
7150 246 9100
13970 443 17780
12650 408 16100
9240 275 11760
16500 492 21000
13464 389 17136
9570 275 12180
21494 550 27356
18700 476 23800
25960 615 33040
121
198
157
271
221
313
221
157
383
313
221
470
350
271
495
443
313
564
519
350
626
495
350
700
606
783
Note: Air in SCFM (Standard Cubic Feet per Minute) = Steam (lbs/hr) x 0.36
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
159
DIRECT-OPERATED
103/8
105/8
REGULATING VALVES
3"
4"
inches/pounds
R E G U L AT O R S
402 & 403 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Pressure Regulating Valve
DIRECT-OPERATED
REGULATING VALVES
Model
Service
Sizes
Connections
Body Material
Seat & Disc
Max. Inlet Pressure
Min. Inlet Pressure
Max. Diff. Pressure
Min. Diff. Pressure
402
403
Steam & Air
1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”, 21/2”, 3”, 4”
NPT, 150# & 300# Flanged
Ductile Iron
Hardened 420 Stainless Steel (55 Rc)
250 PSIG
450 PSIG
20 PSIG
20 PSIG
150 PSI
250 PSI
15% of Inlet Pressure (10 PSI min)
DESIGN PRESSURE/TEMPERATURE RATING – PMA/TMA
NPT
150# FLG
300# FLG
450 PSIG @ 650˚F
150 PSIG @ 566˚F
450 PSIG @ 650˚F
T Y P I C A L A P P L I C AT I O N S
The 402 and 403 Series Internally Pilot-Operated Pressure
Regulating Valves are used for pressure reduction on steam
mains and other process equipment. Pilot-operated regulators
will maintain a constant and accurate downstream pressure
regardless of fluctuations in supply pressure or usage. These
regulators can be supplied with an internal sensing option
eliminating the external sensing line.
402/403
Flanged
PRESSURE-ADJUSTING SPRING RANGES
Springs
Outlet
Pressure (PSIG)
Spring
No.
Identifying
Colors
Single
0-10
10-50
40-100
100-200
200-280
13
14
9
10
special
14
9
9
10
blue/yellow
black/yellow
red/yellow
green/blue
bellville washers
black/yellow
red/yellow
red/yellow
green/blue
F E AT U R E S & O P T I O N S
• Internal pilot minimizes outlet pressure fluctuations.
30-125
Double
Outlet pressure remains constant even when load varies
• Internal Sensing option (If requested the regulator can be
modified to internally sense pressure eliminating the
need for an external sensing line)
• Ductile Iron body to handle increased pressure
and temperature
• Hardened stainless steel seat and disc (55 Rc)
• 403 Series regulators use stainless steel wear parts for
a higher operating pressure rating (PMO of 450 PSIG)
50-200
B
HOW TO SIZE/ORDER
From the Capacity chart, find the inlet pressure and required
regulator outlet pressure. Follow across chart to nearest capacity
of application service medium that meets or slightly exceeds
demand requirements. Follow vertically up to determine appropriate
size. When exact application values are not shown, interpolation
between values is acceptable. From the Spring Ranges chart, select
the ideal spring range that accommodates the required outlet set
pressure. Select valve model suitable for system pressure
requirements. Specify Internal or External (Remote) sensing.
Example:
C
FLOW
Application: 12,500 lbs/hr of 300 PSIG Steam reduced to 125 PSIG
Size/Model: 2” 403 Series Valve, 100-200 PSIG spring range,
Specify internal or external sensing
160
A
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
R E G U L AT O R S
402 & 403 Series
Pressure Regulating Valve
DIMENSIONS & WEIGHTS –
Size
41/2
41/2
41/2
83/16
83/16
83/4
Centerline to Top
B
Single
Double
Spring
Spring
300#
Flanged
12
12
12
123/4
123/4
13
133/4
143/4
16
83/4
93/4
101/2
14
143/8
143/8
143/8
151/8
151/8
153/8
161/8
161/8
183/8
Overall Height
C
Single
Double
Spring
Spring
143/8
143/8
143/8
161/8
161/8
171/8
181/4
193/4
24
163/4
163/4
163/4
181/2
181/2
191/2
205/8
221/8
263/8
Weight
(lbs)
19
19
19
36
36
50
70
82
170
C A PA C I T I E S – Steam (lbs/hr); Air (SCFM)
Inlet Outlet
1/2”, 3/4”
Press. Press. Steam
Air
20
30
50
100
125
150
200
250
300
400
450
Inlet/Outlet Pressures (PSIG)
1”
Steam
Air
11/4”
Steam
Air
11/2”
Steam
Air
2”
Steam
Air
21/2”
Steam
Air
Steam
Air
3”
4”
Steam
Air
0-10
0-10
20
0-20
30
0-50
60
175
270
203
385
343
690
637
60
88
67
130
116
231
214
425
655
493
935
833
1675
1547
145
213
162
315
281
561
519
600
924
696
1320
1176
2364
2184
204
300
228
444
396
792
732
850
1309
986
1870
1666
3349
3094
289
425
323
629
561
1122
1037
1300
2002
1508
2860
2548
5122
4732
442
650
494
962
858
1716
1586
2750
4235
3190
6050
5390
10835
10010
935
1375
1045
2035
1815
3630
3355
3850
5929
4466
8470
7546
15169
14014
1309
1925
1463
2849
2541
5082
4697
4900
7546
5684
10780
9604
19306
17836
1666
2450
1862
3626
3234
6468
5978
80
0-60
70
100
455
865
805
588
151
287
270
196
1105
2100
1955
1428
366
697
655
476
1560
2964
2760
2016
516
984
924
672
2210
4199
3910
2856
731
1394
1309
952
3380
6422
5980
4368
1118
2132
2002
1456
7150
13585
12650
9240
2365
4510
4235
3080
10010
19019
17710
12936
3311
6314
5929
4312
12740
24206
22540
16464
4214
8036
7546
5488
0-70
100
125
0-100
150
175
1019
858
609
1337
1001
739
343
287
214
445
333
245
2474
2083
1479
3247
2431
1794
833
697
519
1080
808
595
3492
2940
2088
4584
3432
2532
1176
984
732
1524
1140
840
4947
4165
2958
6494
4862
3587
1666
1394
1037
2159
1615
1190
7566
6370
4524
9932
7436
5486
2548
2132
1586
3302
2470
1820
16005
13475
9570
21010
15730
11605
5390
4510
3355
6985
5225
3850
22407
18865
13398
29414
22022
16247
7546
6314
4697
9779
7315
5390
28518 9604
24010 8036
17052 5978
37436 12446
28028 9310
20678 6860
0-125
175
200
0-150
1652
1358
1138
2016
550
452
378
665
4012
3298
2763
4896
1335
1097
918
1615
200
250
0-200
280
2016
1250
2657
2146
665
417
875
711
4896
3035
6452
5211
1615
1012
2125
1726
5664
4656
3900
6912
6912
4284
1884
1548
1296
2280
2280
1428
8024
6596
5525
9792
9792
6069
2669
2193
1836
3230
3230
2023
12272
10088
8450
14976
14976
9282
4082
3354
2808
4940
4940
3094
25960 8635 36344 12089 46256 15386
21340 7095 29876 9933 38024 12642
17875 5940 25025 8316 31850 10584
31680 10450 44352 14630 56448 18620
31680 10450 44352 14630 56448 18620
19635 6545 27489 9163 34986 11662
9108
7356
3000
2436
12903
10421
4250
3451
19734
15938
6500
5278
41745 13750 58443 19250 74382 24500
33715 11165 47201 15631 60074 19894
0-225
280
2975
2975
984
984
7225
7225
2389
2389
10200
3372
14450
4777
22100
7306
46750 15455 65450 21637 83300 27538
10200
3372
14450
4777
22100
7306
46750 15455 65450 21637 83300 27538
Note: For capacities of other gases multiply the air capacities by the following factors: Argon–0.85
CO2 –0.81
Helium–2.69
Nitrogen–1.02
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www.watsonmcdaniel.com
161
DIRECT-OPERATED
81/4
91/8
93/4
131/2
inches/pounds
REGULATING VALVES
1/2"
3/4"
1"
11/4"
11/2"
2"
21/2"
3"
4"
Face-to-Face
A
NPT
150#
Threaded
Flanged
B A C K P R E S S U R E - R E L I E F VA L V E S
R Series
&
10691
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Relief & Back-Pressure Regulating Valves
Model
Service
Sizes
Connections
Body & Seat Material
Valve Material
R Series & *10691 Series
Liquids
1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”, 3”
NPT
Body: Bronze Seat: Bronze or EPDM*
Stainless Steel (1/2” – 11/2”)
Bronze (2” – 3”)
300 PSIG
Max. Inlet Pressure
Series 10691
Relief Valve has
Soft EPDM Seat for
tight shut-off in sizes
1/2”, 3/4” & 1”
* For tight shut-off, use Model 10691 with EPDM soft seat.
Available in 1/2”, 3/4” & 1” sizes only.
DIRECT-OPERATED
REGULATING VALVES
DESIGN PRESSURE/TEMPERATURE RATING – PMA/TMA
NPT
300 PSIG @ 180˚F
PRESSURE-ADJUSTING SPRING RANGES
Relief Pressure (PSIG)
Spring No. – Color
1-6 (R only)
5-35
25-100
75-300
4, yellow*
3, silver
2, blue
1, red
*1/2” – 11/2” only
D
D
T Y P I C A L A P P L I C AT I O N S
The R Series & 10691 Series Back Pressure Relief Valves are
used in the following applications:
• Water pump bypass for irrigation, sprinkler systems on
golf courses, fountains and fire protection systems
• Fuel oil pump bypass on commercial systems or large
residential systems
Caution:
Not to be used as an emergency or safety
relief valve.
C
C
F E AT U R E S & O P T I O N S
• Four Springs – easily interchanged to cover pressures
from 1 to 300 PSIG
• Heavy-duty bronze valve body
• 10691 Series has EPDM Seat for tight shut-off (1/2” - 1”)
FLOW
FLOW
B
B
2” & 3”
1/2” thru 11/2”
PRESSURE ADJUSTMENT
To adjust set pressure of valve, remove top cap, loosen lock
nut and adjust pressure with steel setting screw. Rotating the
screw clockwise increases the compression on the spring thereby
increasing the set pressure. Rotating the screw counter-clockwise
lowers the set pressure. Tighten the lock nut and replace top cap
and gasket when desired set pressure is reached.
HOW TO SIZE/ORDER
Specify:
• Regulator: R-Series or 10691
• Size based on capacity chart
• Spring range or relief pressure
Examples: 1” R-Series – 5-35 PSIG relief pressure range
1” R-Series – 20 PSIG (factory set)
Note: Units are not factory set unless specified.
162
DIMENSIONS & WEIGHTS –
inches /pounds
Size
1/2"
3/4"
B
11/8
13/8
C
11/2
13/4
D
35/8
51/2
Weight (lbs)
1.5
2
1"
11/4"
11/2"
2"
3"
15/8
17/8
23/16
21/2
37/8
21/4
23/8
25/8
25/16
41/8
6
6
3
6
8
10
25
Note: Model 10691 available only in sizes 1/2” thru 1”.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
67/8
83/4
107/8
B A C K P R E S S U R E - R E L I E F VA L V E S
R Series
10691
&
Relief & Back-Pressure Regulating Valves
C A PA C I T I E S – Water (GPM)
At 10% Over Set Pressure
Set
Pressure
(PSIG)
3
10
20
50
25-100
75-300
75-300
75
100
200
Spring
Range
(PSIG)
1-6
5-35
Set
Pressure
(PSIG)
3
10
5-35
25-100
25-100
75-300
75-300
1/2”
3/4”
1”
11/4”
11/2”
2”
3”
1.2
0.3
0.6
1.0
2.2
0.4
0.7
1.3
3.2
0.4
0.8
1.6
4.3
0.5
1.0
1.8
5.4
0.5
1.1
2.2
0.6
1.3
2.6
0.7
1.6
3.2
1.4
1.9
3.4
1.9
2.5
4.4
2.3
3.2
5.8
2.8
3.8
6.9
3.4
4.6
8.2
4.0
5.4
9.7
5.0
6.9
12.3
1/2”
3/4”
1”
11/4”
11/2”
2”
3”
2.2
0.6
3.4
0.8
4.6
1.1
5.8
1.3
7.1
1.4
1.8
2.2
20
50
75
1.4
1.8
2.3
1.9
2.0
3.2
2.4
3.1
4.0
3.0
3.8
4.8
3.4
4.4
5.6
4.1
5.4
6.9
4.8
6.4
8.1
100
200
3.6
6.5
4.2
7.6
5.0
9.0
6.3
11.2
7.0
12.4
7.3
13.1
8.9
16.0
REGULATING VALVES
At 20% Over Set Pressure
The R Series Relief Valve water capacities at both 10% and 20% over “Set Pressure” are tabulated in the above table. Enter the chart at the desired
“Set Pressure” in the gray column and read the capacity in GPM to determine proper Valve Size. Select a spring with a relief range that includes the
“Set Pressure” required. Example: A 1” valve set at 50 PSIG will pass 3.1 GPM if the system pressure exceeds the set point by 20%.
HOW IT WORKS
Optional Tank or
Suction Side of Pump
The Relief Valve is actuated by the
system pressure on the inlet side of
the valve. Valve loading is provided
by a spring. The adjustment is done
by removing the cap and rotating the
screw clockwise or counter-clockwise.
R-Series
or
10691
Flow
Outlet
Spring load balances against the
opening force of the upstream
(or relief) pressure. Valve will open
at the slightest increase in pressure
above the spring set point, and will
close when the excess pressure
has been relieved.
The higher the system pressure is
above the relief set point pressure,
the more flow the valve will pass.
It is therefore typical to specify the
maximum capacity of a back pressure
relief valve at 10% & 20% over set
pressure.
R-Series
or
10691
Outlet
Inlet
Inlet
Pump
Suction
A Relief Valve allows water to recirculate through
the pump even when the discharge valve on the
pump is completely closed. As a rule, a minimum
of 20% of the pump capacity must recirculate to
prevent overheating of the pumped liquid.
Pressurized
System
(liquid)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
163
DIRECT-OPERATED
Spring
Range
(PSIG)
1-6
5-35
5-35
25-100
B A C K P R E S S U R E R E L I E F VA L V E S
3040 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Relief & Back Pressure Regulating Valve
Model
Service
Sizes
Connections
Body Material
Disc Material
Diaphragm
DIRECT-OPERATED
REGULATING VALVES
Max. Inlet Pressure
3040 Series
Water, Oil, other Liquids, Air
1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”
NPT, 125# & 250# Flanged
Bronze - 1/2”– 11/2” Threaded
Cast Iron - 2” Threaded
Cast Iron - 2” Flanged
Buna-N/Teflon - 200ºF max
Viton (optional) - 300ºF max
Neoprene/Nylon - 200ºF max
Viton (optional) - 300ºF max
250 PSIG
DESIGN PRESSURE/TEMPERATURE RATING – PMA/TMA
NPT
125# FLG
250# FLG
300 PSIG @ 200˚F
125 PSIG @ 200˚F
250 PSIG @ 200˚F
PRESSURE-ADJUSTING SPRING RANGES
T Y P I C A L A P P L I C AT I O N S
The 3040 Series Back Pressure Valves relieve upstream
pressure in a variety of processes. Automatically
maintains desired maximum pressure in a vessel or
system by relieving excess pressure into lower pressure
return line or to atmosphere. Ideally suited for use as
pump bypass control valve by maintaining constant
pump discharge pressures. Used as a continuously
operating valve for protection against overpressure
conditions.
CAUTION: Not to be used as an emergency or
safety relief valve.
F E AT U R E S & O P T I O N S
• Soft Seat for tight shut-off
• Easy maintenance
• Self-contained
• Fast response
• Accurate control
• Optional Viton trim for 300ºF service
Relief Pressure (PSIG)
Spring No.
1-12
5-35
20-70
40-125
4*
3
2
1
* 1/2” – 1” only
DIMENSIONS & WEIGHTS –
Size
NPT
Threaded
1/2"
3/4"
1"
11/4"
11/2"
2"
41/8
41/8
41/8
413/16
53/16
91/2
Face-to-Face
A
125#
Flanged
103/8
inches/pounds
B
C
Weight
(lbs)
25/16
25/16
25/16
31/4
31/2
51/2
9
9
9
123/4
131/4
163/4
10
10
10
15
17
45
250#
Flanged
107/8
Adjustment
Screw
PRESSURE ADJUSTMENT
Rotating the adjustment screw clockwise increases
the compression on the spring, thereby increasing the
set pressure. Rotating the adjustment screw counterclockwise, lowers the set pressure. Tighten lock nut
after adjustment.
C
HOW TO SIZE/ORDER
Specify:
• Regulator 3040 Series
• Size based on capacity chart
• Spring range or relief pressure
Example:
FLOW
B
2” 3040 Series – 5-35 PSIG spring range
A
164
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
B A C K P R E S S U R E R E L I E F VA L V E S
3040 Series
Relief & Back Pressure Regulating Valve
C A PA C I T I E S – Water (GPM)
C A PA C I T I E S – Air (SCFM)
At 10% Over Set Pressure
At 10% Over Set Pressure
1/2”
3/4”
1”
11/4”
11/2”
2”
1/2”
3/4”
1”
11/4”
11/2”
2”
1-12
5-35
5-35
20-70
40-125
5
10
20
50
75
4.0
5.7
8.1
12.7
15.6
8.0
11.4
16.2
25.4
31.2
10.0
14.3
20.3
31.8
39.0
–
29
41
64
78
–
43
61
95
117
–
71
101
159
195
31
39
56
106
148
55
70
100
191
266
111
141
201
381
532
–
203
290
551
768
–
297
424
805
1123
–
422
603
1144
1596
40-125
40-125
100
125
18.0
20
36.0
40
45.0
50
90
100
135
150
225
250
190
231
341
416
682
833
986
1203
1441
1758
2047
2499
Spring
Range
(PSIG)
Set Pressure
(PSIG)
1/2”
3/4”
1”
11/4”
11/2”
2”
1/2”
3/4”
1”
11/4”
11/2”
2”
1-12
5-35
5-35
20-70
40-125
40-125
5
10
20
50
75
100
4.4
6.3
8.9
14.0
17.2
19.8
8.8
12.5
17.8
27.
34.3
39.6
11.2
16.0
22.7
35.6
43.7
50.4
–
32
45
71
87
101
–
47
67
105
129
149
–
79
113
177
217
250
32
41
59
114
159
205
57
73
106
204
287
369
113
146
212
409
573
737
–
211
306
591
828
1065
–
308
447
863
1210
1556
–
438
635
1226
1719
2212
40-125
125
22
44
56
112
166
278
250
451
901
1302
1903
2704
At 20% Over Set Pressure
At 20% Over Set Pressure
The 3040 Series Relief Valve water and air capacities at both 10% and 20% over “Set Pressure” are tabulated in the above tables. Enter the chart at
the desired “Set Pressure” in the gray column and read the capacity in GPM or SCFM to determine proper Valve Size. Select a spring with a relief range
that includes the “Set Pressure” required. Example: A 1” valve set at 50 PSIG will pass 35.6 GPM water or 409 SCFM air if the system pressure
exceeds the set point by 20%.
HOW IT WORKS
The 3040 Series Back Pressure
Valve senses upstream pressure
acting on the underside of the
diaphragm through a port in the
bottom diaphragm case.
An increase in the upstream
pressure above the set point will
compress the spring and allow
the valve to open. The spring
will close the valve as the
upstream pressure decreases
to the set point.
Flow
3040
Series
3040
Series
Optional Tank
or Suction Side
of Pump
Pressurized
System
The higher the system
pressurizes above the relief
set point pressure, the more
flow the valve will pass. It is
therefore typical to specify the
maximum capacity of a back
pressure relief valve at 10%
& 20% over set pressure.
Outlet
Inlet
Pump
Suction
A Relief Valve allows water to recirculate through
the pump even when the discharge valve on the
pump is completely closed. As a rule, a minimum
of 20% of the pump capacity must recirculate to
prevent overheating of the pumped liquid.
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165
DIRECT-OPERATED
Set Pressure
(PSIG)
REGULATING VALVES
Spring
Range
(PSIG)
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Self-Operated Temperature Regulators
Design & Operation
W91 – Non-Indicating
W94 – Dial Thermometer
CAPILLARY TUBING
DIRECT-OPERATED
REGULATING VALVES
CONNECTION
DIAL THERMOMETER
(Model W94)
BELLOWS
OVERRANGE
PROTECTION SPRING
SENSING BULB
RANGE ADJUSTMENT SPRING
CAP
ADJUSTMENT SCREW
BUSHING
ADJUSTING BAR
YOKE
TEMPERATURE
ADJUSTMENT SCREW
SET POINT SCALE
JAM NUTS
PACKING NUT
TEFLON V-RING PACKING
BONNET NUT
VALVE STEM
VALVE PLUG
STAINLESS STEEL SEATS
VALVE BODY
Housing Assembly
The housing consists of a cap and yoke constructed from precision die cast aluminum. This assembly
ensures permanent alignment with the valve body, while protecting the bellows assembly. The yoke
includes a set point scale used to reference the setting of the temperature adjustment screw. The entire
housing is finished in a corrosion resistant, baked blue epoxy.
166
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T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Self-Operated Temperature Regulators
Design & Operation
Description
The W91/W94 Self-Operating Temperature Regulator is a mechanically operated device designed to regulate
system temperature by modulating the flow of a heating or cooling fluid in response to temperature changes.
Principles of Operation
Direct-Acting – HEATING
Direct-Acting actuators are designed to move the valve stem closed (in-to-close) as the
control signal (temperature) increases.
Reverse-Acting – COOLING
Reverse-Acting actuators are designed to move the valve stem open (in-to-open) as the
control signal (temperature) increases.
Selecting a Temperature Regulator
The W91/W94 Temperature Regulator is recommended for controlling the flow on relatively stable
systems, where small valve stroke modulations will correct temperature drift. Where sudden or large
load changes, or rapid temperature changes occur, a pneumatically or electrically powered Control
Valve should be specified. Please consult the Control Valves section of this catalog.
Actuator
The actuator consists of the following assemblies: housing, bellows and spring return, and thermal
system. Two actuator models are available:
• Model W91 is non-indicating.
• Model W94 is equipped with an integral dial thermometer to indicate sensing bulb temperature.
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167
DIRECT-OPERATED
REGULATING VALVES
The W91/W94 Temperature Regulator is a fully self-contained unit, requiring no external power source
(i.e., compressed air or electricity). Regulation takes place when the sensing element (bulb) of the thermal
system is exposed to changes in temperature. The thermal system is charged with a predetermined
amount of vapor fill, which, when heated, will cause a bellows within the unit’s actuator housing to
expand. As the bellows expands, it compresses a return spring while simultaneously moving the valve
stem downward to stroke the valve. When the process temperature decreases (or in the event of thermal
system failure), the return spring will move the valve stem upward to the “out” position. The choice of
valve action (stem In-To-Close for Heating or stem In-To-Open for Cooling) will determine the system
failure position.
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Self-Operated Temperature Regulators
Design & Operation
Bellows & Spring Return Assembly
The accordion type bellows is corrosion resistant to provide accurate response for the life of the
regulator. An adjusting bar is provided to turn the brass temperature adjustment screw, which
compresses or expands the range adjustment spring, thereby setting the control point of the unit.
DIRECT-OPERATED
REGULATING VALVES
Thermal System Assembly
The thermal system (sensing bulb and capillary tubing) is available in copper (for best heat transfer)
or 316 stainless steel (for corrosive applications) and can be ordered with a variety of protective
coverings, including Teflon or stainless steel spiral armor. Capillary tubing lengths can be specified
from 8 to 52 feet.
Sensing Bulb Installation:
Integral Dial Thermometer
The integral dial thermometer (Model W94) displays the temperature
at the sensing bulb. This allows for easy adjustment of the temperature
set point, as well as continuous monitoring of the application, without
the installation of an additional thermometer. The thermometer has a
31/2" dialface and can be rotated and tilted for maximum readability.
Temperature Range
Nominal ranges from 20°F (-10°C) through 440°F (225°C) are available.
The nominal range defines the entire temperature range of the unit.
The service conditions and choice of valve style and action will
determine the actual operating range (recommended working span) of
the unit. The nominal range should be selected so that the set point
falls within the recommended working span for the specified valve style
and action. Models W91/W94 include an overrange protection spring,
which allows the sensing bulb to be heated 100°F above the upper limit
of the unit’s nominal range for system cleaning or temporary situations.
Care must be taken to ensure
that entire length of the sensing
bulb is immersed into the
medium at the sensing location.
Partial immersion will result in
faulty control. When the sensing
bulb is installed into a pipeline,
constant flow must be continued
through the line in order to
maintain an active thermal signal
to the bulb. Should a closed
valve cause stoppage of flow to
the bulb, a reduced bypass flow
must be installed to maintain the
thermal signal.
The sensing bulb is designed to
be installed in either a horizontal
position or a vertical position
with the tip down. If the tip must
be installed upwards, please
specify when ordering, as a
special bulb construction is
required.
Accuracy
The W91/W94 Temperature Regulator is a “set-and-forget” regulating device. Once the proper control
point setting has been achieved, the unit requires virtually no adjustments and very little maintenance.
Control point accuracy is dependent upon the sensing bulb location, load change size and speed, and
valve size. The sensing bulb must be installed in an area within the process that is most representative of
overall process conditions. Care should be taken not to locate the bulb in close proximity to the valve, as
the regulator might respond to temperature changes before the process has had time to reach the control
point. Where sudden or large load changes occur, a pneumatically or electrically powered Control Valve
should be specified. Please consult the Control Valves section of this catalog.
168
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T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Self-Operated Temperature Regulators
Design & Operation
Accuracy
(continued)
Valve sizing also plays a major part in regulator performance. A valve that is too small will not be able to
provide the desired capacity during peak load conditions, while a valve that is too large may overshoot the
control point and operate with the valve plug too close to the seat, resulting in undue wear of the plug and
seat. As part of a well-designed system, a properly sized valve (operating in the 60-90% open position)
can control to within 2 to 5 °F.
Valve
W91/W94 Temperature Regulators are available with a wide variety of globe valves in
various styles, materials, connections and sizes.
• Single-Seated Balanced Valves are designed for heating applications where
tighter shut-off is required. The leakage rate is approximately 0.1% of the
maximum capacity.
• Double-Seated Balanced Valves are designed for cooling applications
where a slight amount of leakage is normally acceptable. Since temperature
fluctuations may cause expansion and contraction across the seats, tight
shut-off is not always possible. The leakage rate can be up to approximately
0.5% of the maximum capacity.
• 3-Way Valves are used for mixing two flows together, or for diverting a flow
to or around a device (bypass). In order to produce consistent flow quantity
for stable operation, the pressure drop across both flow paths (inlet to outlet)
must be nearly equal.
CAUTION:
3-Way Valves are not
designed for use in
steam applications.
3-Way Valves are of the Sleeve-Type (common port on the bottom). This
type is most commonly used for diverting applications; however, due to its
design it can also be used for mixing applications. The Sleeve-Type design
is constructed with an O-ring around the sleeve. This O-ring is suitable for
water or glycol type service, up to a maximum of 300˚F. A higher temperature
O-ring for use with other fluids, such as oil, or for temperatures up to 410˚F,
is available. Consult factory.
Thermowell
For applications in which the process media may be corrosive or contained under
pressure, the use of a thermowell is required to prevent damage to the sensing bulb.
A thermowell will also facilitate the removal of the sensing bulb and thermal system
from the operating process. Thermowells are available in a variety of connection
styles, materials and lengths.
Note: to ensure
minimum response
time, Heat Transfer
Paste should be applied
to the sensing portion
of the bulb before
installation.
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169
DIRECT-OPERATED
W91/W94 Regulator Valves are offered in single-seated, double-seated and
three-way designs:
REGULATING VALVES
Style
CAUTION:
Temperature Regulators
are not considered
shut-off valves. A
pressure surge may
force a single seated
valve plug open. The
W91/W94 Temperature
Regulator is a balanced
equilibrium system at
the set point and
provides no power to
tightly seat the valve
plug. A separate power
driven or hand actuated
valve is required to
ensure tight shut-off
when necessary.
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Self-Operated Temperature Regulators
Design & Operation
Action
Single-Seated Valves are available as stem In-To-Close (Normally Open) for Heating applications.
Double-Seated Valves are available as stem In-To-Open (Normally Closed) for Cooling applications.
3-Way Valves can be plumbed for either mixing or diverting service.
DIRECT-OPERATED
REGULATING VALVES
Temperature Regulator Valve Action
Application
Stem Action
Normal (Fail) Position
Heating
In-To-Close
Normally Open
Cooling
In-To-Open
Normally Closed
Body & Material and Connection
W91/W94 Temperature Regulators are available with bronze and cast iron valve bodies with
Union, Flanged and Threaded connections.
Trim
Valve trim is composed of the stem and plug assembly, and the seats within the ports. Single and
double-seated bronze bodied valves employ a stainless steel, tapered plug for enhanced modulation.
The valve plug is both top and bottom guided to ensure positive seating alignment. 3-Way valves
use a stainless steel sleeve and brass seating surface to change flow direction within the body.
Packing
Valves feature a self-energizing Teflon V-Ring packing, which reduces leakage around the valve stem.
V-Ring packing is spring loaded to maintain proper compression and does not require manual adjustment.
Size
The proper sizing of a regulating valve is one of the most important factors in its selection. A valve that
is too small will not be able to provide the desired capacity during peak load conditions, while a valve that
is too large may overshoot the control point and operate with the valve plug too close to the seat, resulting
in undue wear of the plug and seat. The valve coefficient (Cv) is used to
determine the maximum capacity of a valve. From this value, a valve body
Valve Coefficient (Cv):
with the appropriate port size can be selected. Port sizes from 1/8" through
The rated valve coefficient
is used to describe the
4" and connection sizes from 1/2" through 4" are available. Please consult
relative flow capacity
the Valve Selection section of this catalog.
of the valve based on
standard test conditions.
Please refer to the Valve
Selection Section for
detailed information.
170
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T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Self-Operated Temperature Regulators
Typical Applications for Temperature Regulators
W94 Elevating Temperature Of A Plating Or Finishing Tank
W94 Heating Fuel Oil To Proper Temperature
Steam Supply
W94
Bypass
Temperature
Sensing Bulb
Steam Supply
W94
Bypass
Heat
Exchanger
F&T
Trap
F&T
Trap
Temperature
Sensing Bulb
W91 Used for Regulating Steam Flow In An
Autoclave/Sterilizer
Thermostatic
W94 Used In A Drying Oven Application
Air Vent
W94
W91
Steam
Supply
Relief
Valve
Temperature
Sensing Bulb
Heat
Coil
Autoclave
Steam
Exhaust Air
Outside
Air
Fan
Bypass
Heating
Coil
Finned Bulb for
Improved Heat
Transfer
Air Flow
Drying Oven
Conveyor
F&T
Trap
W91 Used To Control Water Flow In A Grinding Mill For
Temperature Reduction
W91 Used to Reduce Oil Temperature In
A Heat Exchanger
Cold
Water
Inlet
W91
W91
Cooling
Water
Inlet
Water
Flow
Bypass
Hot Oil
Inlet
Cool Oil
Outlet
Heat Exchanger
Oil Cooler
Temperature
Sensing Bulb
Cooling
Water
Outlet
Temperature
Sensing
Bulb
Grinding
Mill
Cooling Water Outlet
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171
DIRECT-OPERATED
Fuel Oil
Storage Tank
REGULATING VALVES
Pump
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Self-Operated Temperature Regulators
Self-Operating Design
Indicating & Non-Indicating
Models Available
Heavy Duty Die Cast
Aluminum Housing
Indicating Dial
(Model W94 only)
/ " thru 4" Valve Sizes
1 2
Fully Enclosed Bellows
DIRECT-OPERATED
REGULATING VALVES
Internal Overrange protection
The W91 & W94 Self-Operating
Temperature Regulators are the preferred
choice of original equipment manufacturers,
mechanical contractors and specifying
engineers. These regulators require no
external power source and are ideal for
regulating the temperature of tanks, process
streams and various types of industrial
equipment. The Actuator is noted for its
rugged die-cast aluminum housing, fully
enclosed bellows assembly and internal
overrange protection.
Thermal System:
Capillary &
Sensing Bulb
Actuator
Model W91 (without indicating dial)
features a lower profile and should be
specified where space constraints may
be an issue.
Model W94 (with indicating dial)
will allow the operator to verify the
process temperature and to aid in
temperature adjustment.
Thermowells:
For applications in which the process media
may be corrosive or contained under pressure,
the use of a thermowell is required to prevent
damage to the sensing bulb. A thermowell will
also facilitate the removal of the sensing bulb
and thermal system from the operating
process.
Valve
Body
How to write proper model number:
Explanation of
Model Number:
W91 06
08
S15 175-13
model
cap.
length
bulb
type
Model Number:
W910608S15175-13
temp.
range
valve
body
HOW TO ORDER
Models
W91
W94
Temperature Range
Non-Indicating
Indicating Dial
01 – 14
Refer to Temperature
Range Chart
Capillary Length
Bulb
Valve Body Selection
08
12
16
20
24
S15 (brass bulb)
(standard)
Refer to Valve Body Section
8 Feet (std)
12 Feet
16 Feet
20 Feet
24 Feet
S16 (stainless bulb)
(Omit this selection
if purchasing Actuator only)
Note: Thermowells are ordered separately.
See page 175 for model numbers & lengths.
172
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T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Self-Operated Temperature Regulators
Model
Service
Sizes
Connections
W91/W94
Water, Steam, Other Liquids
1/2”– 4”
Threaded, Union Ends, 125# FLG
250# FLG (optional)
1/2” – 11/2” Bronze/Stainless Steel
2”
Cast Iron (Direct-acting)
2”
Bronze (Reverse-acting)
21/2” – 4”
Cast Iron
Stainless Steel
250 PSIG
Body Material
Seat Material
Max. Inlet Pressure
Dimensions: inches [mm]
Non-Indicating
Actuator
Indicating
Actuator
Ø3.67
[93]
4.92
[125]
9.00
[228]
9.00
[228]
Ø3.63
Ø3.63
[92]
[92]
Specifications
Actuator Models
Dial Thermometer
31/2" dial, stainless steel case,
swivel and angle adjustment
(Model W94 only)
W91 - Non-Indicating
W94 - Indicating Dial
Housing
Die cast aluminum, epoxy powder
coated blue finish
Bellows
High pressure brass, corrosion
resistant, tin plated finish
Overrange Protection
Upper range limit +100°F for
temporary situations
Approximate Shipping Weight
Actuator
W91
W94
6.0 lbs [2.7 kg]
6.6 lbs [3.0 kg]
Valve
See Valve Selection tables
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173
DIRECT-OPERATED
W94
REGULATING VALVES
W91
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Self-Operated Temperature Regulators
Temperature Range Chart
W91 & W94 Actuators
DIRECT-OPERATED
REGULATING VALVES
Range
Code
Nominal
Range
Recommended
Working Span *
01
20 to 70 °F
-10 to 20 °C
40 to 65 °F
5 to 20 °C
02*
40 to 90 °F
5 to 30 °C
65 to 85 °F
20 to 30 °C
03
30 to 115 °F
0 to 45 °C
85 to 110 °F
30 to 45 °C
04
50 to 140 °F
10 to 60 °C
110 to 135 °F
45 to 60 °C
05
75 to 165 °F
25 to 70 °C
135 to 160 °F
60 to 70 °C
06
105 to 195 °F
40 to 90 °C
160 to 190 °F
70 to 90 °C
07
125 to 215 °F
55 to 100 °C
190 to 210 °F
90 to 100 °C
09
155 to 250 °F
70 to 120 °C
210 to 245 °F
100 to 120 °C
10
200 to 280 °F
95 to 135 °C
245 to 275 °F
120 to 135 °C
11
225 to 315 °F
110 to 155 °C
275 to 310 °F
135 to 155 °C
12
255 to 370 °F
125 to 185 °C
305 to 365 °F
155 to 185 °C
13
295 to 420 °F
145 to 215 °C
365 to 415 °F
185 to 215 °C
14
310 to 440 °F
155 to 225 °C
415 to 435 °F
215 to 225 °C
* The recommended working span typically falls within the upper third of the nominal range.
Bulb & Capillary Style
ORDER
CODE
Connection Style
& Material
Bulb
Material
Capillary
Tubing Material
S15
Brass
Union Hub
Copper
Copper with
Stainless Steel
Spiral Armor
A
U
S16
Stainless Steel
Union Hub
Stainless
Steel
Stainless Steel
with Stainless Steel
Spiral Armor
A
U
Capillary Length in Ft.
8, 12, 16
20
24
13”
16”
20”
12.25”
15.25” 19.25”
13”
12.25”
16”
15.25”
20”
19.25”
Other Options available. Consult Factory.
Bulb Installation: (refer to diagram below)
The 1” NPT Union Hub is not physically attached to the bulb. The 1” NPT Union Hub is threaded into a tank or
vessel. The bulb slides thru the 1” NPT Union Hub and is held in place and sealed with the Union Nut, which
freely turns on the stainless steel armor protected capillary. When using a Thermowell, the 1” NPT Union Hub is
discarded and the Union Nut threads into the Thermowell.
UNION NUT
“A” INSERTION LENGTH
“U” BULB LENGTH
1.00
STAINLESS STEEL ARMOR
PROTECTED CAPILLARY
174
UNION HUB
1” NPT
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T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Self-Operated Temperature Regulators
Thermowell Selection
Dimensions (inches)
BULB
“A” INSERTION LENGTH
UNION NUT
“U” BULB LENGTH
1.00
STAINLESS STEEL ARMOR
PROTECTED CAPILLARY
* Included with Bulb;
discard when using Thermowell
UNION HUB 1” NPT (is not permanently fastened to Bulb)*
BULB inside THERMOWELL
“A” INSERTION LENGTH
1.13
11/4” NPT HUB
For applications in which the process media may be corrosive or contained under pressure, the use of a thermowell
is required to prevent damage to the sensing bulb. A thermowell will also facilitate the removal of the sensing bulb and
thermal system from the operating process. Because the sensing bulb is isolated from the fluid, this allows the sensing
bulb to be removed without having to drain the liquid below the bulb insertion point.
THERMOWELLS - Model Numbers & Lengths
Brass
Model No.
536-S2
536-SE2
536-WE2
Notes:
Stainless Steel
Model No.
536-S6
536-SE6
536-WE6
Nominal
Length
13"
16"
20"
“A” INSERTION LENGTH (in.)
BULB
THERMOWELL
Capillary Length
in Feet
12.25
15.25
19.25
13.00
16.00
20.00
8, 12 or 16
20
24
1) Other connections and lengths may be available, consult factory.
2) External pressure rating on Brass is 500 PSI max.
3) External pressure rating on 316 SS is 1000 PSI max.
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175
DIRECT-OPERATED
Note: to ensure
minimum response
time, Heat Transfer
Paste should be applied
to the sensing portion
of the bulb before
installation.
11/4” NPT HUB (is part of Thermowell)
REGULATING VALVES
THERMOWELL
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
HEATING
Single Seated Valve Bodies
Single Seat • 1/2” – 4”
Dimensions in inches
Stem In-To-Close
for Heating
Actuator
Mounting
Surface
Actuator
Mounting
Surface
UNION
NUT
DIRECT-OPERATED
REGULATING VALVES
C
C
FLOW
FLOW
B
B
A
(NPT)
A
(UNION)
A
THREADED & UNION
FLANGED
Specifications
Body Material
1/2”- 11/2” Bronze/Stainless
2” Cast Iron
2” - 4” Cast Iron
Trim Material
Stainless Steel
Stainless Steel
Stainless Steel
Connection
Threaded or Malleable Iron Union Ends
Threaded
125# Flanged
250# Flanged
Pressure & Temperature Rating
125 PSI @ 450°F
250 PSI @ 450°F
125 PSI @ 450°F
250 PSI @ 450°F
Valve Body Selection
Valve Body Number
(In-To-Close Heating)
NPT
175-12-N
175-13-N
175-14-N
175-15-N
175-16-N
175-17-N
Union
175-12-U
175-13-U
175-14-U
175-15-U
175-16-U
FLANGED
125#
250#
175-17-125
175-17-250
175-18-125
175-18-250
175-19-125
175-19-250
175-20-125
175-20-250
Size
Connection Capacity
NPT
Cv
1/2"
3.2
3/4"
6.3
1"
10.8
11/4"
15.9
11/2"
22.4
2"
33.1
Maximum
Close-Off Pressure
(PSI ΔP)
250
250
200
200
200
150
Dimensions
A
A
A
Threaded 125# FLG 250# FLG
4.125
x
x
4.125
x
x
4.125
x
x
4.81
x
x
5.19
x
x
9.50
x
x
A
Union
6.50
6.50
7.00
7.50
8.00
x
B
C
2.375
2.375
2.375
3.25
3.50
5.75
2.12
2.12
2.12
2.50
2.69
4.75
Approx.
Ship. Wt.
(lbs) [kg]
14 [6.35]
14 [6.35]
14 [6.35]
17 [7.7]
18 [8.2]
50 [22.7]
x
x
x
x
5.75
7.00
8.00
8.75
4.75
5.00
5.75
6.50
80 [36.3]
96 [43.6]
110 [49.9]
160 [72.6]
Valve Type
2"
21/2"
3"
4"
33.1
47.5
68.2
109.5
Standard
150
65
50
40
Special
–
150
150
150
x
x
x
x
10.375
10.625
10.875
10.50
10.875
11.25
11.625
13.125
Note: For 21/2” - 4” sizes, consult factory for proper actuators.
176
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Capacity Chart for Single Seated Valves
C A PA C I T I E S – Steam (lbs/hr)
Inlet
Pressure
(PSIG)
SINGLE SEATED VALVES
Size & Valve Body Number
11/4"
11/2"
2"
21/2"
3"
4"
175-17
175-18
175-19
175-20
640
946
1357
1949
3129
722
1066
1530
2197
3527
1/2"
3/4"
1"
175-12
175-13
175-14
175-15
175-16
1
91
180
309
454
3
103
203
348
512
226
387
570
803
1187
1703
2445
3926
283
486
715
1007
1488
2135
3066
4922
15
173
341
584
859
1211
1789
2568
3686
5919
20
202
398
682
1004
1415
2090
3000
4307
6915
25
231
455
780
1149
1618
2392
3432
4928
7912
30
260
513
879
1294
1822
2693
3864
5548
8908
40
319
627
1075
1583
2230
3295
4729
6790
10,901
50
377
742
1272
1872
2638
3898
5593
8031
12,894
60
435
857
1468
2162
3045
4500
6458
9272
14,887
70
493
971
1665
2451
3453
5102
7322
10,513
16,880
80
552
1086
1861
2740
3861
5705
8187
11,755
18,873
90
610
1200
2058
3030
4268
6307
9051
12,996
20,866
100
668
1315
2255
3319
4676
6910
9916
14,237
22,859
125
814
1602
2746
4043
5695
8416
12,077
17,340
27,841
150
959
1888
3237
4766
6714
9922
14,238
20,443
32,823
175
1105
2175
3729
5490
7734
4220
6213
8753
200
1250
2462
250
1542
3035
Notes: 1) For reduced-port 1/2” valves, consult factory. 2) All steam capacities based on Critical Drop (Choked Flow).
C A PA C I T I E S – Water (GPM)
Pressure
(PSI ΔP)
1
3
5
10
15
20
25
30
40
50
60
70
80
90
100
125
150
175
200
250
1/2”
175W-12
3/4”
175W-13
1”
175W-14
3.2
5.5
7.2
10
12
14
16
18
20
23
25
27
29
30
32
36
39
42
45
51
6.3
11
14
20
24
28
32
35
40
45
49
53
56
60
63
70
77
83
89
100
11
19
24
34
42
48
54
59
68
76
84
90
97
102
108
121
132
143
153
SINGLE SEATED VALVES
Size & Valve Body Number
11/4”
11/2”
2”
175W-15 175W-16 175W-17
16
28
36
50
62
71
80
87
101
112
123
133
142
151
159
178
195
210
225
22
39
50
71
87
100
112
123
142
158
174
187
200
213
224
250
274
296
317
33
57
74
105
128
148
166
181
209
234
256
277
296
314
331
370
405
21/2”
175W-18
3”
175W-19
4”
175W-20
48
82
106
150
184
212
238
260
300
336
368
397
425
451
475
531
582
68
118
152
216
264
305
341
374
431
482
528
571
610
647
682
762
835
110
190
245
346
424
490
548
600
693
774
848
916
979
1039
1095
1224
1341
Note: When 175 Type Single
Seated Valves are used with water,
add W to the Valve Body Number.
Example:
175-17-N becomes 175W-17-N
Note: Verify that Maximum
Close-Off Pressure for 2” - 4”
models does not exceed max
rating for selected Valve Body
Number and Type. (Refer to
Valve Body Number chart on
previous page)
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177
DIRECT-OPERATED
115
144
REGULATING VALVES
5
10
Note: Verify that
Maximum Close-Off
Pressure for 2” - 4”
models does not exceed
max rating for selected
Valve Body Number and
Type. (Refer to Valve
Body Number chart
on previous page)
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Steam Required for Heating Water
Steam flow required through a temperature regulator (lbs/hr)
to heat a specified number of gallons of water per hour (gal/hr)
DIRECT-OPERATED
REGULATING VALVES
TA B L E 1 Temp
Increase
(˚F)
25
5°
10°
15°
20°
25°
30°
40°
50°
60°
70°
80°
90°
100°
115°
130°
145°
160°
175°
200°
225°
250°
1
2
3
4
5
6
8
10
12
15
17
19
21
24
27
30
33
36
41
47
52
Steam Flow Required in Pounds Per Hour (lbs/hr)
`
50
2
4
6
8
10
12
16
21
25
29
33
38
42
48
54
60
66
72
83
94
104
100
4
8
12
17
20
25
33
42
50
58
67
75
83
95
108
120
133
145
166
187
207
200
8
16
25
33
42
50
66
83
100
116
133
149
166
191
216
241
266
290
332
374
415
Gallons of Water per Hour To Be Heated
300
500
700
1000
2000
4000
12
25
37
50
62
75
100
124
149
174
199
224
249
286
324
361
398
436
498
560
622
166
332
498
664
830
996
1328
1660
1992
2324
2656
2988
3320
3818
4316
4812
5312
5810
6640
7470
8300
21
41
62
83
104
124
166
207
249
290
332
373
415
477
539
601
664
726
830
934
1037
29
58
87
116
145
174
232
290
348
407
465
523
581
668
755
842
929
1017
1162
1307
1452
41
83
124
166
207
249
332
415
498
581
664
747
830
955
1079
1200
1328
1452
1660
1867
2075
83
166
249
332
415
498
664
830
996
1162
1328
1494
1660
1909
2158
2400
2656
2900
3320
3735
4150
10,000
415
830
1245
1660
2075
2490
3320
4150
4980
5810
6640
7470
8300
9544
10,790
12,030
13,280
14,524
16,600
18,680
20,750
20,000
830
1660
2490
3320
4150
4980
6640
8300
9960
11,620
13,280
14,940
16,600
19,088
21,580
24,060
26,560
29,048
33,200
37,360
41,500
Temp
Increase
(˚F)
5°
10°
15°
20°
25°
30°
40°
50°
60°
70°
80°
90°
100°
115°
130°
145°
160°
175°
200°
225°
250°
HEATING WATER: The amount of steam required to heat water can be found using chart above.
Example: To heat 1000 gallons per hour of water from 40˚F to 140˚F (Temp. increase 100˚F) requires 830 lbs/hr of steam.
HEATING FUEL OIL: The amount of steam required to heat fuel oil is half of that to heat water. Use half the value found in chart above.
Example: To heat 1000 gallons per hour of fuel oil from 40˚F to 140˚F (Temp. increase 100˚F) requires 415 lbs/hr of steam.
C A PA C I T Y F O R M U L A S F O R S T E A M L O A D S
When BTU Load is Known
When Square Feet Equivalent
Direct Radiation (EDR) is Known
When Heating Water with Steam
When Heating Fuel Oil with Steam
When Heating Air with Steam Coils
178
Capacity of
steam required
(lbs/hr)
Capacity of
steam required
(lbs/hr)
Capacity of
steam required
(lbs/hr)
Capacity of
steam required
(lbs/hr)
Capacity of
steam required
(lbs/hr)
=
BTU
1000
= Sq. ft. of EDR
4
=
GPM x Temp Rise °F
2
=
GPM x Temp Rise °F
4
=
CFM x Temp Rise °F
900
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
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T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
COOLING
Double Seated Valve Bodies
Dimensions in inches [mm]
Double Seat • 3/4” – 4”
Stem In-To-Open
for Cooling
Actuator
Mounting
Surface
Actuator
Mounting
Surface
C
C
C
C
BB
FLOW
WOLF
AA
3/4” – 2”
UNION
FLOW
FLOW
AA
2” – 4”
FLANGED
Specifications
Body Material
Trim Material
Trim Style Connection
Pressure & Temperature Rating
3/4” - 2” Bronze
21/2” - 4” Cast Iron
Stainless Steel
Stainless Steel
Threaded with Malleable Iron Union Ends
125# Flanged
250 PSI @ 410°F (210°C)
125 PSI @ 350°F (149°C)
Valve Body Selection – Threaded
Size
Nominal Port
Capacity
Cv
Maximum
Close-Off Pressure
(PSI ΔP)
3/4
3/4"
8
250
A33
1
1"
12
A44
11/4
11/4"
A55
11/2
A66
2
Valve Body Number
(In-To-Open Cooling)
Connection (NPT)
A24
A
Dimensions
B
C
Approximate
Shipping Wt.
(lbs) [kg]
5.6 [142]
2.3 [58]
2.3 [58]
5.0 lbs [2.25 kg]
250
6.0 [152]
2.3 [58]
2.3 [58]
6.1 lbs [2.75 kg]
21
250
7.2 [183]
2.6 [66]
2.6 [66]
10.1 lbs [4.55 kg]
11/2"
30
250
7.7 [196]
2.6 [66]
2.6 [66]
11.1 lbs [5.00 kg]
2"
47
250
8.6 [218]
3.1 [79]
3.1 [79]
17.0 lbs [7.65 kg]
A
Dimensions
B
C
Approximate
Shipping Wt.
(lbs) [kg]
Valve Body Selection – Flanged
Size
Maximum
Capacity Close-Off Pressure
(PSI ΔP)
Cv
Valve Body Number
(In-To-Open Cooling)
Connection
B74
21/2"
21/2"
69
65
7.8 [198]
4.8 [122] 5.4 [137]
45 lbs [20 kg]
B79
3"
3"
90
50
9.0 [229]
5.0 [127] 5.6 [142]
70 lbs [32 kg]
B84
4"
4"
196
40
11.4 [290] 6.3 [160] 6.5 [165]
100 lbs [45 kg]
Nominal Port
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179
DIRECT-OPERATED
REGULATING VALVES
B
B
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Capacity Chart for Double Seated Valves
COOLING
C A PA C I T I E S – Water (GPM)
DOUBLE SEATED VALVES
Size, Valve Body Number & Coefficient (Cv)
3/4”
1”
11/4”
11/2”
2”
21/2”
3”
4”
(PSI ΔP)
A24 ITO
Cv = 8
A33 IT0
Cv = 12
A44 IT0
Cv = 21
A55 IT0
Cv = 30
A66 IT0
Cv = 47
B74 ITO
Cv = 69
B79 ITO
Cv = 90
B84 ITO
Cv = 196
1
3
8
14
12
21
21
36
30
52
47
81
69
120
90
156
196
339
REGULATING VALVES
DIRECT-OPERATED
Pressure
Drop
5
18
27
47
67
105
154
201
438
10
25
38
66
95
149
218
285
620
15
31
46
81
116
182
267
349
759
20
36
54
94
134
210
309
402
877
25
40
60
105
150
235
345
450
980
30
44
66
115
164
257
378
493
1074
1240
40
51
76
133
190
297
436
569
50
57
85
148
212
332
488
636
60
62
93
163
232
364
70
67
100
176
251
393
80
72
107
188
268
420
90
76
114
199
285
446
100
80
120
210
300
470
125
89
134
235
335
525
150
98
147
257
367
576
175
106
159
278
397
622
200
113
170
297
424
665
225
120
180
315
450
705
250
126
190
332
474
743
ITO = In-to-Open
180
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
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T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
BRONZE
3-Way Valve Bodies
Dimensions in inches [mm]
3-Way • 1/2” – 2”
for Mixing or Diverting
MIXING FLOW DIAGRAM
DIVERTING FLOW DIAGRAM
STEM @ 0% IN
STEM @ 0% IN
Actuator
Mounting
Surface
STEM @ 50% IN
G
G
R
EPPU
UPPER
TPORT
ROP
)C(
(C)
LOWER
REWOL
TROP
PORT
(B))B(
FF
STEM @ 100% IN
STEM @ 100% IN
)A( TROP NOMMOC
COMMON
PORT (A)
EE
CAUTION: 3-Way Valves are not designed for use in steam applications.
To properly control the mixing of two flows, inlet pressures at ports B and C should be as equal as possible.
Specifications
Body Material
Trim Material
Bronze
Bronze
Connection
Pressure & Temperature Rating
Threaded with Malleable Iron Union Ends
250 PSI @ 300°F (149°C)
Valve Body Selection
Size
Maximum
Close-Off Pressure
(PSI ΔP)
E
Dimensions
F
G
Approximate
Shipping Wt.
Connection (NPT)
Nominal Port
Capacity
Cv
A18
1/2"
1/2"
2.8
250
4.8 [122]
1.8 [46]
1.8 [46]
2.9 lbs [1.31 kg]
A25
3/4"
3/4"
5.6
250
5.6 [142]
2.3 [58]
2.3 [58]
4.7 lbs [2.12 kg]
A34
1"
1"
8.4
250
6.0 [152]
2.3 [58]
2.3 [58]
5.7 lbs [2.57 kg]
A45
11/4"
11/4"
15
250
7.2 [183]
2.8 [71]
2.6 [66]
9.5 lbs [4.28 kg]
A56
11/2"
11/2"
21
250
7.7 [196]
3.5 [89]
2.6 [66]
11.1 lbs [5.00 kg]
A67
2"
2"
33
250
8.6 [218]
4.1 [104] 3.1 [79]
16.7 lbs [7.55 kg]
Valve Body Number
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www.watsonmcdaniel.com
181
DIRECT-OPERATED
REGULATING VALVES
STEM @ 50% IN
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
CAST IRON
3-Way Valve Bodies
Dimensions in inches [mm]
3-Way • 21/2” – 4”
for Mixing or Diverting
MIXING FLOW DIAGRAM
DIVERTING FLOW DIAGRAM
Actuator
Mounting
Surface
DIRECT-OPERATED
REGULATING VALVES
STEM @ 0% IN
STEM @ 0% IN
G
G
UPPERRT
PORT
(C)
LOWER
LOWER
PORT
PORT
(B)
(B)
STEM @ 50% IN
STEM @ 50% IN
FF
STEM @ 100% IN
STEM @ 100% IN
COMMON PORT
COMMON
PORT(A)(A)
EE
CAUTION: 3-Way Valves are not designed for use in steam applications.
To properly control the mixing of two flows, inlet pressures at ports B and C should be as equal as possible.
Specifications
Body Material
Trim Material
Connection
Pressure & Temperature Rating
Cast Iron
Bronze
125# Flanged
125 PSI @ 300°F (149°C)
Valve Body Selection
Size
Valve Body Number
182
Connection
Nominal Port
Maximum
Capacity Close-Off Pressure
(PSI ΔP)
Cv
E
Dimensions
F
G
Approximate
Shipping Wt.
B75
21/2"
21/2"
58
125
9.0 [229]
7.1 [180]
5.2 [132]
B80
3"
3"
72
125
10.0 [254]
8.0 [203]
6.0 [152]
80 lbs [36 kg]
B85
4"
4"
102
125
13.0 [330]
10.0 [254]
6.9 [175]
140 lbs [64 kg]
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
62 lbs [28 kg]
T E M P E R AT U R E R E G U L AT O R S
W91/W94 Series
Capacity Chart for 3-Way Valves
C A PA C I T I E S – Water (GPM)
Pressure
Drop
(PSI ΔP)
3-WAY VALVES
Size, Valve Body Number & Coefficient (Cv)
11/4”
11/2”
2”
21/2”
3”
4”
B75
Cv = 58
B80
Cv = 72
B85
Cv = 102
1/2”
3/4”
1”
A18
Cv = 2.8
A25
Cv = 5.6
A34
Cv = 8.4
A45
Cv = 15
A56
Cv = 21
1
2.8
5.6
8.4
15
21
33
58
72
102
3
4.8
10
15
26
36
57
100
125
177
228
A67
Cv = 33
13
19
34
47
74
130
161
8.9
18
27
47
66
104
183
228
323
15
11
22
33
58
81
128
225
279
395
20
13
25
38
67
94
148
259
322
456
25
14
28
42
75
105
165
290
360
510
30
15
31
46
82
115
181
318
394
559
40
18
35
53
95
133
209
367
455
645
50
20
40
59
106
148
233
410
509
721
60
22
43
65
116
163
256
449
558
790
70
23
47
70
125
176
276
485
602
853
80
25
50
75
134
188
295
519
644
912
90
27
53
80
142
199
313
550
683
968
100
28
56
84
150
210
330
580
720
1020
125
31
63
94
168
235
369
648
805
1140
150
34
69
103
184
257
404
175
37
74
111
198
278
437
200
40
79
119
212
297
467
225
42
84
126
225
315
495
250
44
89
133
237
332
522
Note: Oil service or high temperature service requires special O-ring.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
183
DIRECT-OPERATED
6.3
REGULATING VALVES
5
10
CONTROL
VALVES
Control Valves
W910 COMPACT
CONTROL VALVE
184
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Control Valves
TA901
I/P TRANSDUCER
TR890
ELECTRONIC
PID CONTROLLER
CONTROL
VALVES
ELECTRONIC
TEMPERATURE
SENSOR
RTD or THERMOCOUPLE
TA987
AIR FILTER/REGULATOR
Control Valves
W910 Series Compact Control Valve
Page No.
186-196
The W910 Series Pneumatic Control Valve offers high quality at an economical price,
incorporating many features found only on more expensive units. Models are available
to provide the proper flow response required by the application.
Controllers & Sensors
Understanding a Control Loop
Controllers – Design & Operation
TR890 Series Electronic PID Controller
TA901 Series Electropneumatic I/P Transducer
TA987 Air Filter/ Regulator (for TA901 Pneumatic Control Device)
Electronic Temperature Sensors (RTD or Thermocouple)
Thermowells (for Temperature Sensors)
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197-205
197
198-199
200-201
202
203
204
205
185
C O N T R O L VA LV E S
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
W910 Series
Compact Control Valve
Models
Service
Sizes
Connections
Body Material
Seat Material
Max. Inlet Pressure
W910A, W910B, W910C, W910TB,
W910EPA, W910EPC
Water, Steam, Other Liquids
1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”,
21/2”, 3”, 4”
Union Ends, 125# Flanged
250# Flanged (optional)
1/2” – 2” Bronze
21/2” – 4” Cast Iron
Stainless Steel
250 PSIG
DESIGN PRESSURE/TEMPERATURE RATING – PMA/TMA
CONTROL
VALVES
Union Ends 250 PSIG @ 450˚ F
125# FLG
125 PSIG @ 450˚ F
Description
A control valve is a device capable of modulating flow at varying
degrees between minimal flow and full capacity in response to a
signal from an external control device. The control valve, often
referred to as “the final control element,” is a critical part of any
control loop, as it performs the physical work and is the element
that directly affects the process.
Principles of Operation
A control valve is comprised of an actuator mounted to a valve.
The valve modulates flow through movement of a valve plug in
relation to the port(s) located within the valve body. The valve plug
is attached to a valve stem, which, in turn, is connected to the
actuator. The actuator, which can be pneumatically or electrically
operated, directs the movement of the stem as dictated by the
external control device.
Pneumatic/Diaphragm Actuated
Watson McDaniel Pneumatic Actuators are direct acting and
utilize an air signal from an external control device to create a
modulating control action. The force of the air signal is received
into the actuator through a top port and distributed across the full
area of the actuator’s diaphragm. The diaphragm presses down on
the diaphragm plate and spring return assembly, which then moves
the valve stem and plug assembly downward to stroke the valve.
This actuator will move to a stem-out position in the event of air
signal failure. The choice of valve action (stem-In-To-Close or
stem-In-To-Open) will determine its signal failure position.
186
The W910 Series Pneumatic Control Valve
offers high quality at an economical price,
incorporating many features found only on
more expensive units. The following Models are
available to provide the proper flow response
required by the application:
The W910A, W910B & W910C are used
for On/Off control applications, providing a
quick-opening flow response when used
with single or double seated valves.
The W910TB is used for proportional or
PID control applications, providing a throttling
flow response when used with double seated
or 3-way valves.
The W910EPA & W910EPC are used for
proportional or PID control applications,
providing equal percentage flow response
when used with single seated valves.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
C O N T R O L VA LV E S
W910 Series
Compact Control Valve
Specifications
Units: inches [mm]
Actuator
Model
Diaphragm Control
Size
Action
Input
Signal
W910A
7"
On/Off
15 PSIG
W910B
10"
On/Off
15 PSIG
W910C
12"
On/Off
15 PSIG
W910TB
10"
Throttling*
3-15 PSIG
W910EPA
7"
Equal
Percentage
3-15 PSIG
W910EPC
12"
Equal
Percentage
3-15 PSIG
A
AIR INLET
1/8” NPT
* Includes 3-Way Valves
Actuator Housing
Die cast aluminum, epoxy powder
coated blue finish.
B
Setting Scale
Integral to housing
Adjustment Screw
Brass
CONTROL
VALVES
Adjustment Screw Bushing
Lubricant impregnated sintered bronze
Range Adjustment Spring
Cadmium plated
Pressure Plate
Actuator Number
Aluminum
Diaphragm
Nylon reinforced EDPM
Air Pressure to Diaphragm
30 PSIG maximum
Air Pressure Connection
1/8
“ NPT Female
A
B
Approx. Shipping Weight
W910A
7.0 [178]
9.8 [249]
6.6 lbs [2.97 kg]
W910B
9.3 [236]
9.8 [249]
8.5 lbs [3.83 kg]
W910C
11.4 [290]
9.8 [249]
12.0 lbs [5.41 kg]
W910TB
9.3 [236]
9.8 [249]
9.6 lbs [4.32 kg]
W910EPA
7.0 [178]
9.8 [249]
7.6 lbs [3.42 kg]
W910EPC
11.4 [290]
9.8 [249]
13.1 lbs [5.90 kg]
Actuator
Operating Temperature
Ambient:
-40°F (-40°C) to 180°F (82°C)
Process Flow:
-40°F (-40°C) to 410°F (210°C)
HOW TO ORDER
Actuator
Model
W910A
W910B
W910C
Sample Order Number:
•
W910 Series Pneumatic Actuators are used in conjunction with
the W910 Series Control Valve. Choose the appropriate Actuator
model based on the intended service.
W910TB - A56
Control Action
Valve Body Number
On/Off
Refer to pages 188-190
W910TB
Throttling
Refer to pages 191-193
W910EPA
W910EPC
Equal Percentage
Refer to page 188
Procedure:
1. Determine the Actuator Model ( W910A, W910B, W910C,
W910TB, W910EPA or W910EPC) required.
Note: Refer to the maximum close-off pressure columns in
the Valve Body Selection tables to determine the Actuator size
required by your application.
2. Determine the Valve Body Number based on the Valve
Size, style and material required by the application.
Note: Consult the Valve Selection tables on the following
pages to determine the required Valve Body Number.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
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187
C O N T R O L VA LV E S
W910 Series
Valve Body for W910A, W910B, W910C, W910EPA & W910EPC
BRONZE
Single Seat • 1/2” – 2”
Stem In-To-Close
(normally open)
Stem In-To-Open
(normally closed)
Actuator
Mounting
Surface
CONTROL
VALVES
Actuator
Mounting
Surface
C
C
C
C
B
B
BB
FLOW
FLOW
A
A
AA
Specifications
Body Material
Trim Material
Trim Style
Connection
Pressure & Temperature Rating
Bronze
Stainless Steel
ML or EP
NPT with Malleable Iron Union Ends
250 PSI @ 410°F (210°C)
ML = Modified Linear (On/Off); EP = Equal Percentage
Valve Body Selection
In-To-Close
Maximum Close-Off Pressure (PSI ΔP)
(Normally Open)
Valve Body No.
ML
EP
A14
E14
Size
Connection (NPT)
Cv
W910A
1/2"
2.8
250
Actuator
W910B
W910C W910EPC
A
Dimensions
B
C
Approximate
Shipping Wt.
x
x
250
4.8 [122]
1.8 [46]
1.8 [46]
3.0 lbs [1.35 kg]
4.9 lbs [2.21 kg]
A19
E19
3/4"
5.6
250
x
x
250
5.6 [142]
2.3 [58]
2.3 [58]
A26
E26
1"
8.4
200
250
x
200
6.0 [152]
2.3 [58]
2.3 [58]
6.0 lbs [2.70 kg]
A36
E36
11/4"
15
100
250
x
150
7.2 [183]
2.6 [66]
2.6 [66]
9.7 lbs [4.37 kg]
A47
E47
11/2"
21
50
150
250
100
7.7 [196]
2.6 [66]
2.6 [66]
10.8 lbs [4.86 kg]
A58
E58
2"
33
25
50
250
50
8.6 [218]
3.1 [79]
3.1 [79]
16.3 lbs [7.34 kg]
A
Dimensions
B
C
Approximate
Shipping Wt.
In-To-Open
Maximum Close-Off Pressure (PSI ΔP)
(Normally Closed)
Valve Body No.
ML
EP
A15
E15
Size
Connection (NPT)
Cv
W910A
Actuator
W910B
W910C W910EPA
1/2"
2.8
250
x
x
250
4.8 [122]
1.8 [46]
1.8 [46]
3.0 lbs [1.35 kg]
3/4"
5.6
250
x
x
250
5.6 [142]
2.3 [58]
2.3 [58]
4.9 lbs [2.21 kg]
E30
1"
8.4
200
x
x
200
6.0 [152]
2.3 [58]
2.3 [58]
6.0 lbs [2.70 kg]
E41
11/4"
15
150
x
x
150
7.2 [183]
2.6 [66]
2.6 [66]
9.7 lbs [4.37 kg]
A52
E52
11/2"
21
100
x
x
100
7.7 [196]
2.6 [66]
2.6 [66]
10.8 lbs [4.86 kg]
A63
E63
2"
33
50
x
x
50
8.6 [218]
3.1 [79]
3.1 [79]
16.3 lbs [7.34 kg]
A22
E22
A30
A41
All dimensions are inches [mm].
188
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
C O N T R O L VA LV E S
W910 Series
BRONZE
Valve Body for W910A,W910B & W910C
Double Seat • 3/4” – 2”
Stem In-To-Close
(normally open)
Stem In-To-Open
(normally closed)
Actuator
Mounting
Surface
Actuator
Mounting
Surface
CC
C
C
BB
B
B
CONTROL
VALVES
FLOW
FLOW
A
A
A
A
Specifications
Body Material
Trim Material
Trim Style
Connection
Pressure & Temperature Rating
Bronze
Stainless Steel
Modified Linear
NPT with Malleable Iron Union Ends
250 PSI @ 410°F (210°C)
Valve Body Selection
In-To-Close
(Normally Open)
Size
Valve Body
Number
Connection (NPT)
Nominal Port
Cv
Maximum Close-Off Pressure (PSI ΔP)
Actuator
W910A
W910B
W910C
A
Dimensions
B
C
Approximate
Shipping Wt.
A21
3/4"
3/4"
8
250
x
x
5.6 [142]
2.3 [58]
2.3 [58]
5.0 lbs [2.25 kg]
A29
1"
1"
12
250
x
x
6.0 [152]
2.3 [58]
2.3 [58]
6.1 lbs [2.75 kg]
A39
11/4"
11/4"
21
250
x
x
7.2 [183]
2.6 [66]
2.6 [66]
10.1 lbs [4.55 kg]
A50
11/2"
11/2"
30
250
x
x
7.7 [196]
2.6 [66]
2.6 [66]
11.1 lbs [5.00 kg]
A61
2"
2"
47
200
x
x
8.6 [218]
3.1 [79]
3.1 [79]
17.0 lbs [7.65 kg]
A
Dimensions
B
C
Approximate
Shipping Wt.
5.0 lbs [2.25 kg]
In-To-Open
(Normally Closed)
Size
Valve Body
Number
Connection (NPT) Nominal Port
Cv
Maximum Close-Off Pressure (PSI ΔP)
Actuator
W910A
W910B
W910C
A24
3/4"
3/4"
8
250
x
x
5.6 [142]
2.3 [58]
2.3 [58]
A33
1"
1"
12
250
x
x
6.0 [152]
2.3 [58]
2.3 [58]
6.1 lbs [2.75 kg]
A44
11/4"
11/4"
21
250
x
x
7.2 [183]
2.6 [66]
2.6 [66]
10.1 lbs [4.55 kg]
A55
11/2"
11/2"
30
250
x
x
7.7 [196]
2.6 [66]
2.6 [66]
11.1 lbs [5.00 kg]
A66
2"
2"
47
200
x
x
8.6 [218]
3.1 [79]
3.1 [79]
17.0 lbs [7.65 kg]
All dimensions are inches [mm].
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
189
C O N T R O L VA LV E S
W910 Series
CAST IRON
Valve Body for W910A, W910B & W910C
Double Seat • 21/2” – 4”
Stem In-To-Close
(normally open)
Stem In-To-Open
(normally closed)
Actuator
Mounting
Surface
Actuator
Mounting
Surface
C
C
C
C
BB
CONTROL
VALVES
B
B
FLOW
FLOW
AA
A
Specifications
Body Material
Trim Material
Trim Style
Connection
Pressure & Temperature Rating
Cast Iron
Stainless Steel
Modified Linear
125# Flanged
125 PSI @ 350°F (176°C)
Valve Body Selection
In-To-Close
Valve Body
Number
(Normally Open)
Size
Connection Nominal Port
Cv
Maximum Close-Off Pressure (PSI ΔP)
Actuator
W910C
W910A
W910B
A
Dimensions
B
C
B73
21/2"
21/2"
69
125
x
x
7.8 [198]
4.8 [122] 5.4 [137]
45 lbs [20 kg]
B78
3"
3"
90
125
x
x
9.0 [229]
5.0 [127] 5.6 [142]
70 lbs [32 kg]
B83
4"
4"
196
125
x
x
11.4 [290]
6.3 [160] 6.5 [165]
100 lbs [45 kg]
In-To-Open
Valve Body
Number
(Normally Closed)
Size
Connection Nominal Port
Cv
Maximum Close-Off Pressure (PSI ΔP)
Actuator
W910A
W910B
W910C
A
Dimensions
B
C
Approximate
Shipping Wt.
B74
21/2"
21/2"
69
125
x
x
7.8 [198]
4.8 [122] 5.4 [137]
B79
3"
3"
90
125
x
x
9.0 [229]
5.0 [127] 5.6 [142]
70 lbs [32 kg]
B84
4"
4"
196
125
x
x
11.4 [290]
6.3 [160] 6.5 [165]
100 lbs [45 kg]
All dimensions are inches [mm].
190
Approximate
Shipping Wt.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
45 lbs [20 kg]
C O N T R O L VA LV E S
W910 Series
BRONZE
Valve Body for W910TB
Single or Double Seat
1/2” – 2”
Stem In-to-Open
(normally closed)
Stem In-to-Close
(normally open)
Single Seat
Single Seat
Actuator
Mounting
Surface
Actuator
Mounting
Surface
C
C
B
B
C
C
B
B
FLOW
FLOW
A
A
A
A
Stem In-to-Open
(normally closed)
Stem In-to-Close
(normally open)
Double Seat
Double Seat
CONTROL
VALVES
Actuator
Mounting
Surface
Actuator
Mounting
Surface
C
C
C
C
B
B
B
B
FLOW
FLOW
A
A
A
A
Specifications
Body Material
Trim Material
Trim Style
Connection
Pressure & Temperature Rating
Bronze
Stainless Steel
Modified Linear
NPT with Malleable Iron Union Ends
250 PSI @ 410°F (210°C)
Valve Body Selection
Valve Body Number
ITC
ITO
Normally Normally
Open
Closed
A02
A03
A05
A06
A08
A09
A11
A12
A14
A15
A21
A24
A29
A33
A39
A44
A50
A55
A61
A66
Size
Connection Nominal
(NPT)
Port
1/2"
1/8"
1/2"
3/16"
1/2"
1/4"
1/2"
3/8"
1/2"
1/2"
3/4"
3/4"
1"
1"
11/4"
11/4"
11/2"
11/2"
2"
2"
Number of
Seats
1
1
1
1
1
2
2
2
2
2
Cv
0.17
0.35
0.7
1.4
2.8
8
12
21
30
47
Maximum Close-Off Pressure
(PSI ΔP)
Actuator
W910TB
250
250
250
250
250
250
250
250
250
250
A
4.8 [122]
4.8 [122]
4.8 [122]
4.8 [122]
4.8 [122]
5.6 [142]
6.0 [152]
7.2 [183]
7.7 [196]
8.6 [218]
Dimensions
B
C
1.8 [46]
1.8 [46]
1.8 [46]
1.8 [46]
1.8 [46]
1.8 [46]
1.8 [46]
1.8 [46]
1.8 [46]
1.8 [46]
2.3 [58]
2.3 [58]
2.3 [58]
2.3 [58]
2.6 [66]
2.6 [66]
2.6 [66]
2.6 [66]
3.1 [79]
3.1 [79]
Approximate
Shipping Wt.
3.0 lbs [1.35 kg]
3.0 lbs [1.35 kg]
3.0 lbs [1.35 kg]
3.0 lbs [1.35 kg]
3.0 lbs [1.35 kg]
5.0 lbs [2.25 kg]
6.1 lbs [2.75 kg]
10.1 lbs [4.55 kg]
11.1 lbs [5.00 kg]
17.0 lbs [7.65 kg]
All dimensions are inches [mm].
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
191
C O N T R O L VA LV E S
W910 Series
BRONZE
Valve Body for W910TB
3-Way • 1/2” – 2”
for Mixing or Diverting
MIXING
FLOW DIAGRAM
DIVERTING
FLOW DIAGRAM
AIR
AIR
Actuator
Mounting
Surface
G
AIR
AIR
UPPER
PORT
LOWER
PORT
(C)
CONTROL
VALVES
(B)
F
AIR
AIR
E
COMMON
PORT
(A)
CAUTION: 3-Way Valves are not designed for use in steam applications.
To properly control the mixing of two flows, inlet pressures at ports B and C should be as equal as possible.
Specifications
Body Material
Trim Material
Trim Style
Connection
Pressure & Temperature Rating
Bronze
Bronze
Modified Linear
NPT with Malleable Iron Union Ends
250 PSI @ 300°F (149°C)
Valve Body Selection
Maximum Close-Off Pressure (PSI ΔP)
Mixing or Diverting
Valve Body
Number
Size
Connection (NPT) Nominal Port
Cv
Actuator
W910TB
E
Dimensions
F
G
A18
1/2"
1/2"
2.8
250
4.8 [122]
1.8 [46]
1.8 [46]
2.9 lbs [1.31 kg]
A25
3/4"
3/4"
5.6
250
5.6 [142]
2.3 [58]
2.3 [58]
4.7 lbs [2.12 kg]
A34
1"
1"
8.4
250
6.0 [152]
2.3 [58]
2.3 [58]
5.7 lbs [2.57 kg]
A45
11/4"
11/4"
15
250
7.2 [183]
2.8 [71]
2.6 [66]
9.5 lbs [4.28 kg]
A56
11/2"
11/2"
21
250
7.7 [196]
3.5 [89]
2.6 [66]
11.1 lbs [5.00 kg]
A67
2"
2"
33
250
8.6 [218]
4.1 [104]
3.1 [79]
16.7 lbs [7.55 kg]
All dimensions are inches [mm].
192
Approximate
Shipping Wt.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
C O N T R O L VA LV E S
W910 Series
CAST IRON
Valve Body for W910TB
3-Way • 21/2” – 4”
for Mixing or Diverting
MIXING
FLOW DIAGRAM
DIVERTING
FLOW DIAGRAM
Actuator
Mounting
Surface
AIR
AIR
G
G
LOWER
LOWER
PORT
PORT
(B)
(B)
AIR
AIR
UPPER
PORT
(C)
CONTROL
VALVES
FF
AIR
AIR
COMMON PORT (A)
EE
COMMON
PORT
(A)
CAUTION: 3-Way Valves are not designed for use in steam applications.
To properly control the mixing of two flows, inlet pressures at ports B and C should be as equal as possible.
Specifications
Body Material
Trim Material
Trim Style
Connection
Pressure & Temperature Rating
Cast Iron
Bronze
Modified Linear
125# Flanged
125 PSI @ 300°F (149°C)
Valve Body Selection
Maximum Close-Off Pressure (PSI ΔP)
Mixing or Diverting
Valve Body
Number
Size
Connection (NPT) Nominal Port
Cv
Actuator
W910TB
E
Dimensions
F
G
Approximate
Shipping Wt.
B75
21/2"
21/2"
58
125
9.0 [229]
7.1 [180]
5.2 [132]
62 lbs [28 kg]
B80
3"
3"
72
125
10.0 [254] 8.0 [203]
6.0 [152]
80 lbs [36 kg]
B85
4"
4"
102
125
13.0 [330] 10.0 [254] 6.9 [175]
140 lbs [64 kg]
All dimensions are inches [mm].
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
193
C O N T R O L VA LV E S
W910 Series
Capacity Charts
C A PA C I T I E S – Steam (lbs/hr)
CONTROL
VALVES
1/2”
3/4”
S I N G L E S E AT E D VA LV E S
Size, Body Number & Coefficient (Cv)
1”
11/4”
Inlet
A14/E14 ITC
A19/E19 ITC
A26/E26 ITC
Pressure
(PSIG)
Cv = 2.8
Cv = 5.6
Cv = 8.4
1
80
160
240
3
90
180
270
5
100
201
301
10
126
252
377
15
151
302
454
20
177
353
530
25
202
404
606
30
228
455
683
40
279
557
838
50
329
659
988
60
380
761
1141
70
431
863
1294
80
482
964
1447
90
533
1066
1599
100
584
1168
1752
125
711
1423
2134
150
839
1677
2516
175
966
1932
2898
200
1093
2187
3280
250
1348
2696
4044
Note: All steam capacities based on Critical Drop (Choked Flow).
C A PA C I T I E S – Water (GPM)
1/2”
Pressure
A14/E14 ITC
Drop
A15/E15 ITO
(PSI ΔP)
Cv = 2.8
1
2.8
3
4.8
5
6.3
10
8.9
15
11
20
13
25
14
30
15
40
18
50
20
60
22
70
23
80
25
90
27
100
28
125
31
150
34
175
37
175
37
200
40
225
42
250
44
ITC = In-to-Close; ITO = In-to-Open
194
3/4”
A19/E19 ITC
A22/E22 ITO
Cv = 5.6
5.6
10
13
18
22
25
28
31
35
40
43
47
50
53
56
63
69
74
74
79
84
89
A36/E36 ITC
Cv = 15
428
483
537
674
810
946
1083
1219
1492
1765
2038
2310
2583
2856
3129
3811
4493
5175
5857
7221
11/2”
2”
A47/E47 ITC
A58/E58 ITC
Cv = 21
599
676
752
943
1134
1325
1516
1701
2089
2471
2853
3235
3617
3999
4380
5335
6290
7245
8200
10109
Cv = 33
942
1062
1182
1482
1782
2082
2382
2682
3283
3883
4483
5083
5683
6283
6884
8384
9884
11385
12885
15886
Note:
Verify that Maximum
Close-Off Pressure does
not exceed max rating
for selected valve body
number and actuator.
(Refer to Valve Body
No. charts for Single
Seated Valves.)
S I N G L E S E AT E D VA LV E S
Size, Body Number & Coefficient (Cv)
1”
11/4”
A26/E26 ITC
A30/E30 ITO
Cv = 8.4
8.4
15
19
27
33
38
42
46
53
59
65
70
75
80
84
94
103
111
111
119
126
133
A36/E36 ITC
A41/E41 ITO
Cv = 15
15
26
34
47
58
67
75
82
95
106
116
125
134
142
150
168
184
198
198
212
225
237
11/2”
2”
A47/E47 ITC
A52/E52 ITO
Cv = 21
21
36
47
66
81
94
105
115
133
148
163
176
188
199
210
235
257
278
278
297
315
332
A58/E58 ITC
A63/E63 ITO
Cv = 33
33
57
74
104
128
148
165
181
209
233
256
276
295
313
330
369
404
437
437
467
495
522
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Note:
Verify that Maximum
Close-Off Pressure does
not exceed max rating
for selected valve body
number and actuator.
(Refer to Valve Body
No. charts for Single
Seated Valves.)
C O N T R O L VA LV E S
W910 Series
Capacity Charts
C A PA C I T I E S – Steam (lbs/hr)
3/4”
A21 ITC
1”
A29 ITC
Cv = 8
288
257
287
359
432
505
578
650
796
941
1087
1232
1378
1523
1669
2032
2396
2760
3124
3851
Cv = 12
343
386
430
539
648
757
866
975
1194
1412
1630
1848
2067
2285
2503
3049
3594
4140
4685
5777
Cv = 21
599
676
752
943
1134
1325
1516
1707
2089
2471
2853
3235
3617
3999
4380
5335
6290
7245
8200
10109
Cv = 30
856
965
1075
1347
1620
1893
2166
2439
2984
3530
4075
4621
5167
5712
6258
7622
8986
10350
11714
14442
Cv = 47
1342
1513
1684
2111
2538
2966
3393
3820
4675
5530
6385
7240
8094
8949
9804
11941
14078
16215
18352
22625
Cv = 69
1970
2221
2472
3099
3726
4354
4981
5609
6864
8119
9380
10640
11890
13150
14400
17540
3”
B78 ITC
4”
B83 ITC
Cv = 90
2569
2896
3224
4042
4861
5679
6497
7316
8953
10589
12240
13870
15510
17150
18790
22880
Cv = 196
5595
6308
7021
8803
10585
12368
14150
15932
19497
23080
26650
30210
33780
37350
40920
49830
CONTROL
VALVES
Inlet
Pressure
(PSIG)
1
3
5
10
15
20
25
30
40
50
60
70
80
90
100
125
150
175
200
250
D O U B L E S E AT E D VA LV E S
Size, Body Number & Coefficient (Cv)
11/4”
11/2”
2”
21/2”
A39 ITC
A50 ITC
A61 ITC
B73 ITC
Note: All steam capacities based on Critical Drop (Choked Flow).
C A PA C I T I E S – Water (GPM)
Pressure
Drop
(PSI ΔP)
1
3
5
10
15
20
25
30
40
50
60
70
80
90
100
125
150
175
200
225
250
3/4”
A21 ITC
A24 ITO
Cv = 8
8
14
18
25
31
36
40
44
51
57
62
67
72
76
80
89
98
106
113
120
126
1”
A29 ITC
A33 IT0
Cv = 12
12
21
27
38
46
54
60
66
76
85
93
100
107
114
120
134
147
159
170
180
190
D O U B L E S E AT E D VA LV E S
Size, Body Number & Coefficient (Cv)
11/4”
11/2”
2”
A39 ITC
A50 ITC
A61 ITC
A44 IT0
A55 IT0
A66 IT0
Cv = 21
Cv = 30
Cv = 47
21
30
47
36
52
81
47
67
105
66
95
149
81
116
182
94
134
210
105
150
235
115
164
257
133
190
297
148
212
332
163
232
364
176
251
393
188
268
420
199
285
446
210
300
470
235
335
525
257
367
576
278
397
622
297
424
665
315
450
705
332
474
743
21/2”
B73 ITC
B74 ITO
Cv = 69
69
120
154
218
267
309
345
378
436
488
534
577
617
655
690
771
3”
B78 ITC
B79 ITO
Cv = 90
90
156
201
285
349
402
450
493
569
636
697
753
805
854
900
1006
4”
B83 ITC
B84 ITO
Cv = 196
196
339
438
620
759
877
980
1074
1240
1386
1518
1640
1753
1859
1960
2191
ITC = In-to-Close; ITO = In-to-Open
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
195
C O N T R O L VA LV E S
W910 Series
Capacity Charts
C A PA C I T I E S – Water (GPM)
3-WAY VALVES
CONTROL
VALVES
Inlet pressures should be within 5% of each other. Specify if service is for other than water.
Pressure
Drop
(PSI ΔP)
1
3
5
10
15
20
25
30
40
50
60
70
80
90
100
125
150
175
200
225
250
1/2”
3/4”
1”
A18
Cv = 2.8
2.8
4.8
6.3
8.9
11
13
14
15
18
20
22
23
25
27
28
31
34
37
40
42
44
A25
Cv = 5.6
5.6
10
13
18
22
25
28
31
35
40
43
47
50
53
56
63
69
74
79
84
89
A34
Cv = 8.4
8.4
15
19
27
33
38
42
46
53
59
65
70
75
80
84
94
103
111
119
126
133
Size, Body Number & Coefficient (Cv)
11/4”
11/2”
2”
A45
Cv = 15
15
26
34
47
58
67
75
82
95
106
116
125
134
142
150
168
184
198
212
225
237
A56
Cv = 21
21
36
47
66
81
94
105
115
133
148
163
176
188
199
210
235
257
278
297
315
332
A67
Cv = 33
33
57
74
104
128
148
165
181
209
233
256
276
295
313
330
369
404
437
467
495
522
21/2”
3”
4”
B75
Cv = 58
58
100
130
183
225
259
290
318
367
410
449
485
519
550
580
648
B80
Cv = 72
72
125
161
228
279
322
360
394
455
509
558
602
644
683
720
805
B85
Cv = 102
102
177
228
323
395
456
510
559
645
721
790
853
912
968
1020
1140
Note: Oil service or high temperature service requires special O-ring.
C A PA C I T I E S
Inlet
Pressure
(PSIG)
1
3
5
10
15
20
25
30
40
50
60
70
80
90
100
125
150
175
200
250
– Steam (lbs/hr)
SINGLE SEATED
Size, Body Number & Coefficient (Cv)
1/8”
3/16”
1/4”
3/8”
Reduced Port
Reduced Port Reduced Port Reduced Port
A02 ITC
A05 ITC
A08 ITC
A11 ITC
Cv = 0.17
4.9
5.5
6.1
7.6
9.2
11
12
14
17
20
23
26
29
32
35
43
51
59
66
82
Cv = 0.35
10
11
13
16
19
22
25
28
35
41
48
54
60
67
73
89
105
121
137
168
Cv = 0.7
20
23
25
31
38
44
51
57
70
82
95
108
121
133
146
178
210
241
273
337
Note: All steam capacities based on Critical Drop (Choked Flow).
196
Cv = 1.4
40
45
50
63
76
88
101
114
139
165
190
216
241
267
292
356
419
483
547
674
C A PA C I T I E S
Pressure
Drop
(PSI ΔP)
1
3
5
10
15
20
25
30
40
50
60
70
80
90
100
125
150
175
200
250
– Water (GPM)
SINGLE SEATED
Size, Body Number & Coefficient (Cv)
1/8”
3/16”
1/4”
3/8”
Reduced Port
Reduced Port
Reduced Port Reduced Port
A02 ITC
A05 ITC
A08 ITC
A11 ITC
A03 ITO
A06 ITO
A09 ITO
A12 ITO
Cv = 1.4
Cv = 0.17
Cv = 0.35
Cv = 0.7
1.4
0.2
0.4
0.7
0.3
0.6
1.2
2.4
0.4
0.8
1.6
3.1
0.5
1.1
2.2
4.4
0.7
1.4
2.7
5.4
0.8
1.6
3.1
6.3
0.9
1.8
3.5
7.0
0.9
1.9
3.8
7.7
4.4
8.9
1.1
2.2
1.2
2.5
4.9
10
1.3
2.7
5.4
11
1.4
2.9
5.9
12
1.5
3.1
6.3
13
1.6
3.3
6.6
13
1.7
3.5
7.0
14
1.9
3.9
7.8
16
8.6
17
2.1
4.3
9.3
19
2.2
4.6
2.4
4.9
10
20
2.7
5.5
11
22
ITC = In-to-Close; ITO = In-to-Open
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
C O N T R O L VA LV E S
Control Loop
Understanding a Control Loop
SEMI-INSTANTANEOUS WATER HEATER TEMPERATURE CONTROL LOOP
AIR SIGNAL LINE
TA901 I/P
TRANSDUCER
W910 SERIES
CONTROL VALVE
4
TA987
AIR FILTER/REGULATOR
Affect
STEAM
INLET
AIR INLET
3
Respond
HOT WATER
OUTLET
BYPASS
LINE
WVBSS
VACUUM
BREAKER
AV2000
AIR VENT
SET
POINT
Compare
2
TR890 CONTROLLER
1
SEMI-INSTANTANEOUS
WATER HEATER
RTD or THERMOCOUPLE
TEMPERATURE SENSOR
CONTROL
VALVES
COLD
WATER
INLET
Sense
STEAM
TRAP
Control Loop
1
A control loop is a process management system designed to
maintain a process variable at a desired set point. Each step in the
loop works in conjunction with the others to manage the system.
Once the set point has been established, the control loop operates
using a four-step process.
Sense
Measure the current condition of the process using a
sensor, which can be an electronic (thermocouple, RTD or
transmitter) or mechanical device (thermal system).
2
Compare
Evaluate the measurement of the current condition against
the set point using an electronic or electric contact controller.
3
Respond
React to any error that may exist between the measured
value and set point by generating a corrective pneumatic
or electric control signal.
4
Affect
Actuate a final control element (valve, heater or other
device) that will produce a change in the process variable.
The loop continually cycles through the steps, affecting the
process variable in order to maintain the desired set point.
Watson McDaniel is unique in its ability to provide all of
the necessary components to create a complete
control loop.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
197
C O N T R O L VA LV E S
Controllers
Design & Operation
Description
A controller is a comparative device that receives an input signal from a measured process variable,
compares this value with that of a predetermined control point value (set point), and determines the
appropriate amount of output signal required by the final control element to provide corrective action
within a control loop. Watson McDaniel offers an Electronic PID Controller, which uses electrical signals
and digital algorithms to perform its receptive, comparative and corrective functions.
Principles of Operation (Electronic PID Controller)
CONTROL
VALVES
An electronic sensor (thermocouple, RTD or transmitter) installed at the measurement location
continuously sends an input signal to the controller. At set intervals, the controller compares this signal
to a predefined set point. If the input signal deviates from the set point, the controller sends a corrective
electric output signal to the control element. This electric signal must be converted to a pneumatic signal
when used with an air operated valve, such as a Watson McDaniel W910 Series Control Valve. The
conversion can be made using a Watson McDaniel TA901 I/P Transducer, which converts a 4 to 20 mA
electric signal to a 3 to 15 PSI air signal.
Features (Electronic PID Controller)
An electronic controller is best suited for applications where large load changes are encountered and/or
fast response changes are required. Watson McDaniel Electronic Controllers have full auto-tuning and
PID capabilities, and offer a host of available options, including user selectable inputs and ranges,
outputs, setback functions and alarms.
PID Control is a feature of most Watson McDaniel Electronic Controllers. PID combines the proportional,
integral and derivative functions into a single unit.
• Proportional (P) — Proportional control reacts to the size of the deviation from set point when
sending a corrective signal. The size of the corrective signal can be adjusted in relation to the size of
the error by changing the width of the proportional band. A narrow proportional band will cause a
large corrective action in relation to a given amount of error, while a wider proportional band will cause
a smaller corrective action in relation to the same amount of error.
• Integral (I) — Integral control reacts to the length of time that the deviation from set point exists when
sending a corrective signal. The longer the error exists, the greater the corrective signal.
• Derivative (D) — Derivative control reacts to the speed in which the deviation is changing. The corrective signal will be proportional to the rate of change within the process.
Auto-Tuning
Auto-tuning will automatically select the optimum values for P, I and D, thus eliminating the need for the
user to calculate and program these values at system startup. This feature can be overridden when so
desired. On some models, the control element can be manually operated.
198
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
C O N T R O L VA LV E S
Controllers
Design & Operation
Selecting an Electronic PID Controller
All Watson McDaniel Electronic Controllers are designed to control the temperature or pressure of general industrial
equipment and should be carefully selected to meet the demands of the particular application. The information contained within this catalog is offered only as a guide to assist in making the proper selection. Selection of the proper
controller is the sole responsibility of the user. Improper application may cause process failure, resulting in possible
personal injury or property damage.
Case Size
Case Size selection is determined by both available and designed space, and controller features.
Watson McDaniel Electronic Controllers are available in the following panel sizes:
48 x 48 mm (1/16 DIN), 72 x 72 mm, 96 x 96 mm (1/4 DIN) and 48 x 96 mm (1/8 DIN).
The depth of the unit varies with the model selected.
Input
The Input is the measurement signal received by the controller from the sensor. A variety of input
types are available, including thermocouple, RTD, voltage and current.
Control Output
CONTROL
VALVES
The Control Output is the corrective signal transmitted from the controller to the control element.
Various control output types are available, including contact, voltage, current and
solid state relay driver.
Analog Output
The Analog Output is an optional secondary signal that transmits the measurement signal from the
controller to a remote data acquisition device, such as a recorder, personal computer or display unit.
Alarms
Most models can be ordered with alarms, event outputs, or heater break alarms, which signal an
external device to perform a specific task at a predetermined set point.
Setback Function
This feature, optionally available on some models, is designed to provide energy savings in applications
where the process is idled at regular intervals through the connection of an external timer or switch.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
199
C O N T R O L VA LV E S
TR890 Series
Electronic PID Controllers • Features PID & Auto-tuning
Specifications
Models
TR891:
TR892:
TR893:
TR894:
Control
Control Mode: Auto-Tuning PID
Action: Reverse acting (field switchable to direct acting)
Proportional
Band
Multiple Sizes
CONTROL
VALVES
mm (1/16 DIN)
mm
mm (1/4 DIN)
mm (1/8 DIN)
Off, 0.1-999.9% Full Scale
Integral Time: Off, 1-6000 sec.
Derivative Time: Off, 1-3600 sec.
Display
Process Value: 4 Digit, 20 mm red LED
Set Value: 4 digit, 10.2 mm green LED
Sampling Cycle: 0.25 seconds
Inputs
Multi: (switchable between)
Thermocouple: B, R, S, K, E, J, T, N, PL II, WRe5-26 (U,L (DIN 43710)
RTD: Platinum 100 Ω, 3-Wire
mV: (scalable) -10–10, 0-10, 0-20, 0-50, 10-50, 0-100 mV DC
Current: (scalable) 4-20, 0-20 mA
Voltage: -1–1, 0-1, 0-2, 0-5, 1-5, 0-10 VDC
Control
Output
Current: 4-20 mA (load resistance: 600 Ω maximum)
Contact: Proportional cycle,
1-120 sec. (capacity: 240 VAC 2 A resistive / 1.2 A inductive)
Manual Output Override
SSR Drive Voltage: Proportional cycle 1-120 sec.
(output rating: 12 ± 1.5 VDC / 30 mA maximum)
Voltage: 0-10 VDC
Load Current 2 mA max
Power
Supply Voltage: 100-240 VAC, 50/60 Hz or 24 VAC/VDC 50/60 Hz
Requirements
Consumption:
Data Storage
Use of a Watson McDaniel
No. TA987 Air Filter/Regulator
is recommended for filtering
and regulating the pressure of
plant compressed air, and for
delivering clean, dry air at
the proper pressure to
pneumatic control devices.
48
72
96
48
+ 0.3%
Reverse or Direct Acting
The TR890 Series Electronic
PID Controller is designed for
use on applications where
large load changes are
expected, or extreme
accuracy and fast response
times are needed. With full
auto-tune capabilities and
a large selection of available
inputs, the TR890 Series is
ideally suited for use with
a Watson McDaniel
Control Valve.
x
x
x
x
Accuracy
+ 0.3% Accuracy
Keyboard
Programmable
48
72
96
96
100-240 VAC, 15VA
24 VDC, 8W
24 VAC, 9VA
Nonvolatile EEPROM memory
Case Material Polyphenylene Oxide (PPO)
Ambient Temp. 14°F (-10°C) to 122°F (50°C)
Humidity
Maximum: 90% RH, non-condensing
Event Outputs
(Contact Capacity: 240 VAC, 1 A/resistive load)
Dual Event Outputs (High and/or Low Alarms)
Single Event Output + Heater Break Alarm (includes CT30A sensor)
Single Event Output + Heater Break Alarm (includes CT50A sensor)
Approximate Shipping Weights:
TR891:
TR892:
TR893:
TR894:
200
0.4
0.6
0.7
0.5
lbs
lbs
lbs
lbs
[0.17
[0.28
[0.33
[0.24
kg]
kg]
kg]
kg]
Options:
Analog Output: 0-10 mV DC (output resistance 10 Ω )
Analog Output: 4-20 mA DC (load resistance 300 Ω max )
Analog Output: 0-10 VDC (load current 2 mA max )
Digital Input (switch) including:
Setback Function setting range of -1999 - 5000, standby or DA/RA Selection
Operated by either non-voltage contact or open collector
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
C O N T R O L VA LV E S
TR890 Series
Electronic PID Controllers
W
C
D
A
B
H
PANEL CUTOUT DIMENSIONS
HOW TO ORDER
Sample Order Number:
TR893 8 A C 90 1 00
Input
Control Output
Power Supply
Event Output
Options
TR891
TR892
TR893
TR894
8
4
6
A
C
D
E
90 100-240 VAC, 50/60 Hz
08 24 VAC/VDC, 50/60 Hz
0
1
00
30
40
60
08
38
Multi
mA
VDC
4-20 mA
On/Off Contact
SSR Driver
0-10 VDC
2
Event Outputs
2 or 3 require
Control Outputs
C or D
3
None
Dual Event
(high and/or low)
Single Event
(high or low) and
heater break CT30A
Single Event
(high or low) and
heater break CT50A
*Not available with Model TR891
Electronic PID Controller Dimensions – units: inches [mm].
Model
TR891
TR892
TR893
TR894
A
1.77 [45]
2.68 [68]
3.63 [92]
1.77 [45]
1.77
2.68
3.63
3.63
B
[45]
[68]
[92]
[92]
C
0.43 [11]
0.43 [11]
0.43 [11]
0.43 [11]
D
3.94 [100]
3.94 [100]
3.94 [100]
3.94 [100]
None
Analog Output (0-10 mVDC)
Analog Output (4-20 mA)
Analog Output (0-10 VDC)
Digital Input (switch)
Digital Input (switch) with
0-10 mVDC* Analog Output
48 Digital Input (switch)
with 4-20 mA* Analog Output
68 Digital Input (switch) with
0-10 VDC* Analog Output
CONTROL
VALVES
Model
H
1.89 [48]
2.83 [72]
3.78 [96]
3.78 [96]
W
1.89 [48]
2.83 [72]
3.78 [96]
3.78 [96]
Programmable Ranges
Thermocouple Inputs
T/C
Range Fahrenheit
Type
Code Range
*
Range Celsius
Code Range
RTD Inputs
Range Fahrenheit
Code Range
Range Celsius
Code Range
Current & Voltage Inputs
Range Range
Code (User-scalable Readout)
B
15
0° to 3300°F 01
0° to 1800°C
47
-300° to 1100°F
31
-200° to 600°C
71
-10–10 mV
E
21
0° to 1300°F 07
0° to 700°C
48
-150.0° to 200.0°F
32
-100.0° to 100.0°C
72
0-10 mV
J
22
0-20 mV
K
18
K
19
0° to 1500°F 05
K
20
L
28
N
0° to 1100°F 08
49
-150° to 600°F
33
-100.0° to 300.0°C
73
50
-50.0° to 120.0°F
34
-50.0° to 50.0°C
74
0-50 mV
0° to 800°C
51
0.0° to 120.0°F
35
0.0° to 50.0°C
75
10-50 mV
0° to 2200°F 06
0° to 1200°C
52
0.0° to 200.0°F
36
0.0° to 100.0°C
76
0-100 mV
0° to 1100°F 14
0° to 600°C
53
0.0° to 400.0°F
37
0.0° to 200.0°C
81
-1–1 V
24
0° to 2300°F 10
0° to 1300°C
54
0° to 1000°F
38
0.0° to 500.0°C
82
0-1 V
PL II
25
0° to 2300°F 11
0° to 1300°C
83
0-2 V
R
16
0° to 3100°F 02
0° to 1700°C
84
0-5 V
S
17
0° to 3100°F 03
0° to 1700°C
85
1-5 V
T
23
-300° to 400°F
09
-199.9° to 200.0°C
86
0-10 V
U
24
-300° to 400°F
13
-199.9° to 200°C
94
0-20 mA
WRe5-26
26
95
4-20 mA
-150° to 750°F
04
0° to 4200°F 12
0° to 600°C
-100.0° to 400.0°C
0° to 2300°C
Range Codes are not required for ordering, but are used for field programming.
*750°F (400°C) falls below the accuracy range
201
C O N T R O L VA LV E S
TA901 Series
I/P Transducer • Electropneumatic
4 to 20 mA
Input
3 to 15 PSI
Output
Intrinsically Safe
Zero and Span
Adjustments
The TA901 Electropneumatic (I/P) Transducer converts a milliamp
current signal to a linearly proportional pneumatic output pressure. This
transducer is designed for control applications that require a high degree
of reliability and repeatability. The TA901 is used in the control operation
of valve actuators and pneumatic valve positioners in the petrochemical,
HVAC, energy management, textile, paper, and food & drug industries.
The TA901 I/P Transducer is tested and approved by Factory Mutual as
Intrinsically Safe Class I, II and III, Division I, Groups C, D, E, F and G when
installed in accordance with the Installation, Operation and Maintenance
Instructions. It should be installed in a vertical position in a vibration-free area.
The Watson McDaniel TA987 Air Filter/Regulator is recommended for filtering
and regulating the pressure of plant compressed air, and for delivering clean,
dry air at the proper pressure to pneumatic control devices.
Specifications
Model
Air Requirements
Mounting
Intrinsic Safety
TA901
Clean, oil-free, dry air filtered
to 40 microns
Pipe, panel or bracket in a
vibration-free area. Field
adjustment will be required if
mounted in a nonvertical position.
Input
4-20 mA
Adjustment
Adjustable zero and span
Sensitivity: < ±0.1% of span
per PSIG
Accuracy
Ambient Temperature
Terminal Based Linearity:
< ±0.75% of span
-20°F (-30°C) to 140°F (60°C)
Minimum Supply Pressure:
3 PSIG
Output
CONTROL
VALVES
Maximum Supply Pressure:
100 PSIG
Tested and approved by
Factory Mutual as Intrinsically
Safe Class I, II and III, Division
I, Groups C, D, E, F and G
when installed in accordance
with Installation, Operation and
Maintenance Instructions
1-17 PSIG Per ANSI/FCI 87-2
(can be calibrated to provide
1-9 PSIG or 9-17 PSIG)
Volume Booster
Built-in volume booster allows
flow capacity up to 20 SCFM
Air Consumption: 0.03 SCFH
typical
Connections
Flow Rate: 4.5 SCFM at
25 PSIG supply
Pneumatic: 1/4” NPT
Electric: 1/2” NPT
Approximate Shipping
Weight
Repeatability: < 0.5% of span
Hysteresis: < 1.0% of span
2.1 lbs [0.94 kg]
Response Time: < 0.25 sec. @
3-15 PSIG
Relief Capacity: 2.0 SCFM at
5 PSIG above 20 PSIG setpoint
HOW TO ORDER
Please order using Item Number:
TA901
Unit: inches [mm].
MOUNTING BRACKET
.55 [14.0]
1.10
[27.9]
2.88
[73.1]
.55
[14.0]
2.18 [55.4]
MAX. SQUARE
1.09
[27.7]
1.25 [31.8]
1/2
NPT
Ø.21
[5.4]
4.24
[107.7]
Ø1.13
[28.7]
1.50
[38.1]
1.43
[36.2]
.55 [14.0]
10-32 UNF-2A X .38 DEEP
MOUNTING HOLES
1/4 NPT
18 GA. WIRE LEADS
18" LONG
BLACK-POSITIVE / WHITE-NEGATIVE
202
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
1.50
[38.1]
C O N T R O L VA LV E S
TA987
Air Filter/Regulator
The TA987 Air Filter/Regulator is recommended for filtering
and regulating the pressure of plant compressed air, and for delivering
clean, dry air at the proper pressure to pneumatic control devices. Supply air
enters the inlet port, passes through the filtering element, and exits through
the reducing valve to the outlet port. The filtering element removes particles
as small as 40 microns. A drip well is provided for the accumulation of oil
and water and a drain cock is included to allow purging of the unit.
The filtering element is readily accessible for cleaning by removal of the
drip well bowl.
Cast Aluminum
Housing
Removable Nylon
Mesh Filter
Low Air
Consumption
Drip Well
The maximum allowable supply pressure to TA987 Air Filter/Regulator
is 250 PSIG. Improper application may cause failure of the regulator,
resulting in possible personal injury or property damage.
Specifications
Air Requirements (cont.)
Filter
Mounting
Flow Rate: 20 SCFM at 100
PSIG supply/20 PSIG output
Removes particles 40 microns
or greater
Side, pipe, panel or
through body
Air Requirements
Relief Capacity: 0.1 SCFM at
5 PSIG above setpoint
Port Size
Ambient Temperature
1/4”
-20°F (-30°C) to 160°F (71°C)
Maximum Supply Pressure:
250 PSIG
Output Range:
0 to 30 PSIG, adjustable
Effect of Supply Pressure
Variation: < 0.2 PSIG for
25 PSIG
NPT
Housing
Approximate Shipping
Weight
Cast aluminum
Sensitivity: 0.036 PSIG
CONTROL
VALVES
Model
TA987
1.9 lbs [0.86 kg]
Air Consumption: < 6 SCFH
Units: inches [mm].
2.06
[52.3]
.31 [7.9] SQUARE
1.44
[36.6]
10-24 UNC
2 HOLES
VENT
GAUGE
PORT
2.10
[53.3]
2.14
[54.4]
7.25
[184.2]
OUT
.75
[19.1]
.05 [1.2]
TO C
L
OF
GAUGE
PORT
1/4-20 UNC
.44 [11.1] DEEP
2 HOLES
Ø.36 [9.1]
THRU 2 HOLES
Ø.44
[11.2]
2.75
[69.9]
3.19
[81.0]
1.25
[31.8]
2.25
[57.2]
3.19
[81.0]
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
203
C O N T R O L VA LV E S
Electronic Temperature Sensors
Connection Head Type • RTD & Thermocouple
The Watson McDaniel
Connection Head is
available with both Type J
and Type K Thermocouples,
as well as RTD sensors. The
weather proof head provides
a conduit connection and is
available in cast aluminum
(screw cover), polypropylene
(flip cover) and stainless steel
(screw cover). The stem is either
welded directly to the 1/2” NPT
threaded connection, or is
spring-loaded to provide
maximum sensitivity. The
spring-loaded stem must always
be installed in a thermowell.
Thermocouple
or RTD
Cast Aluminum,
Polypropylene
or Stainless
Steel Head
Weather Proof
Welded or
Spring Loaded
Stem
Specifications
CONTROL
VALVES
Type J T/C
TKD
Type K T/C
TDD
TMD
100 Ω RTD
1000 Ω RTD
T/C: Ungrounded
RTD: Platinum, 3-Wire
Stem
316 stainless steel
1/4" diameter
Insulation Ceramic
Head
For applications where
the process media may
be corrosive or contained
under pressure, the use of
a thermowell is required to
prevent damage to the sensor
and facilitate its removal from
the process. To prevent leakage
of the process media, spring
loaded sensors must always
be installed in a thermowell.
Ø3.30
[83.8]
Description
TJD
Hot Junction
Extension wire and transmitter
accessories are also available.
Please consult factory.
3.91
[99.4]
Sensors
Cast aluminum, polypropylene or
stainless steel
Process Connection
1/2” NPT welded or spring-loaded
Conduit Connection
3/4” NPT Female
Approximate Shipping Weight
1.1 lbs [0.50 kg]
3.40
[86.2]
1/2 NPT
STEM
LENGTH
Sensor Specifications
Thermocouple
Type Color Code
J
Black
K
Yellow
Positive Lead
Iron* (Fe)
[white]
Negative Lead
Constantan (Cu-Ni)
[red]
Temperature Range
32° to 1382°F
(0° to 750°C)
Nickel-Chromium (Ni-Cr)
[yellow]
Nickel-Aluminum* (Ni-Al)
[red]
32° to 2282°F
(0° to 1250°C)
*magnetic lead
Ø.25
[6.4]
RTD
Type
D
Material
Platinum (Pt)
Resistance @ 0°C
100 Ω Ω
Temperature Coefficient
a = 0.00385 Ω/Ω/°C
Temperature Range
-50° to 700°F
(-45° to 400°C)
M
Platinum (Pt)
1000 Ω
a = 0.00385 Ω/Ω/°C
-50° to 700°F
(-45° to 400°C)
Units: inches [mm]
HOW TO ORDER
Sensor
Stem Style
TJD Type J T/C
TKD Type K T/C
TDD 100 Ω RTD
TMD 1000 Ω RTD
Z 316SS,
Other sensor styles available.
Please consult factory.
204
Sample Order Number:
1/ 4”
Stem Length
O.D.
02
04
06
09
12
21/2"
Stem
4" Stem
6" Stem
9" Stem
12" Stem
TJD Z 04 U W A
Hot Junction
Connection
Head Material
U
D
S Spring Loaded,
1/ 2” NPT
W Welded,
1/ 2” NPT
A Aluminum
P Polypropylene
S Stainless Steel
Ungrounded (T/C)
3-Wire (RTD)
Other Lengths: Specify in inches (24" maximum)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
C O N T R O L VA LV E S
Thermowells
for RTD & Thermocouple Temperature Sensors
Standard (9” - 24”)
Standard (2 1/2" - 6")
(A)
(A)
STEM LENGTH
STEM LENGTH
(P)
Ø.260
EXTERNAL
THREAD
(P)
[7]
EXTERNAL
THREAD
1/2 NPSM
Ø.260
[7]
1/2 NPSM
U
Ø.44
LENGTH
.40 [10]
[11]
U
1.00
[25]
.75 [19]
.61 [15]
Ø.50
LENGTH
with Lagging Extension (4” - 24”)
[13]
Units inches: [mm]
(A)
STEM LENGTH
(P)
EXTERNAL THREAD
1/2 NPSM
[7]
1.00
[25]
LAGGING
EXTENSION
CONTROL
VALVES
Ø.50
(T)
.75 [19]
Ø.260
[13]
U
LENGTH
Lengths
Lagging
(T)
Lagging Extension
Pressure Ratings (PSI)
(A)
Stem Length
Standard
U
Length
21/2"
1.75 [44]
—
—
4”
2.50 [64]
1.00 [25]
1.50 [38]
6”
4.50 [114]
2.00 [51]
2.50 [64]
9”
7.50 [191]
3.00 [76]
4.50 [114]
Carbon steel
304 stainless steel
316 stainless steel
Monel
12”
10.50 [267]
3.00 [76]
7.50 [191]
Brass
15”
13.50 [343]
3.00 [76]
10.50 [267]
18”
16.50 [419]
3.00 [76]
13.50 [343]
24”
22.50 [572]
3.00 [76]
19.50 [495]
U
Length
Operating Temperature
Material
70°F
5000
6550
6540
5530
200°F
400°F
600°F
800°F
1000°F
5000
6000
6400
4990
4800
4860
6000
4660
4600
4140
5270
4450
3500
3510
5180
4450
3130
4660
-
3170 PSI @ 150˚F,
2930 PSI @ 350˚F
Selection of the proper thermowell is the sole responsibility of the user. Temperature and pressure limitations must be considered.
Improper application may cause failure of the thermowell, resulting in possible personal injury or property damage. For correct use
and application, please refer to the Thermowells For Thermometers And Electrical Temperature Sensors Standard ASME B40.9.
HOW TO ORDER
Thermowell Style
Sample Order Number:
(P) External Thread
76 -Sensor, Stepped Shank
(21/2" - 6" Stem
Straight Shank)
3
4
5
1/2
NPT*
3/4 NPT
1 NPT*
76-4J6
(A) Stem Length
(T) Lagging Extension
Material
D
G
J
M
R
V
Wa
Wk
A
C
E
2
3
4
5
6
21/2" Stem
4" Stem
6" Stem
9" Stem
12" Stem
15" Stem
18" Stem
24" Stem
1" Extension (4" Stem only)
2" Extension (6" Stem only)
3" Extension (9" thru 24” Stem only)
Omit if No Extension
Brass
Steel
Monel
304SS
316SS
*Not available with 21/2" Stem Length
Other thermowell styles available. Please consult factory.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
205
LIQUID
DRAINERS
Liquid Drainers
206
Liquid Drainers
Model/Series
Type
Body Material
PMO
(PSIG)
Sizes
Connection
Page No.
WLDE
WLDES
Float
Float
Ductile Iron
Cast Steel
200
300
11/2”, 2”, 21/2”
21/2”
NPT
NPT, SW, FLG
208-209
WLD600
WLD601
Float
Float
Carbon Steel
316 Stainless Steel
450
3/4” – 4”
NPT, SW,
FLG
210-211
WLD1400
Float
Ductile Iron
300
1/2” – 2”
NPT
212-213
WLD1500
Inverted Bucket
Cast Iron
200
3/4”, 1”
NPT
214-215
WLD1703S
Thermodynamic
Stainless Steel
250
1/2”
NPT
216
Stainless Steel
400
1/2”, 3/4”
NPT
217-218
Cast Iron
250
3/4” – 2”
NPT
219-221
WLD1800/1800R Guided Float
WLD1900
Float
Installation Guidelines for Liquid Drain Traps
222-223
LIQUID
DRAINERS
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
207
LIQUID DRAINERS
WLDE/WLDES Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float Type Liquid Drain Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WLDE
11/2”, 2”, 21/2”
NPT
Ductile Iron
200 PSIG
450ºF
300 PSIG up to 450˚F
450ºF @ 300 PSIG
WLDES
21/2”
NPT, SW, Flanged
Cast Steel
300 PSIG
450ºF
300 PSIG up to 750˚F
750ºF @ 300 PSIG
T Y P I C A L A P P L I C AT I O N S
MAINTENANCE
The WLDE/WLDES Series high-capacity condensate drainers
meet the flow requirements that are typically found in heavy
industrial process applications for air and other gases.
Close isolation valves prior to any maintenance. All working
components can be replaced with the drain trap remaining in
the pipeline. Repair kits include float, valve seat & disc, and
gaskets. For full maintenance details see Installation and
Maintenance Manual.
HOW IT WORKS
LIQUID
DRAINERS
This liquid drainer has a float-operated valve that gives the trap a
modulating flow characteristic. The amount of liquid flowing into
the drainer is sensed by the float which positions the main valve
to discharge the liquid at the same rate as it is received.
M AT E R I A L S
Body & Cover
F E AT U R E S
• Ductile Iron or Cast Steel body and cover
• All stainless steel internals for long service life
• High capacity liquid removal
• Rugged construction design for heavy industrial use
• In-line repairable
Cover Screw
Cover Gasket
Valve Discs
Main Valve Assembly Housing
Valve Assembly Gasket
Ball Float
All other components
WLDE - Ductile Iron
WLDES - Cast Steel
Carbon Steel, Gr 5
Garlock
Stainless Steel, AISI 303
Stainless Steel, AISI 304
Garlock
Stainless Steel, AISI 304
Stainless Steel
S A M P L E S P E C I F I C AT I O N
The liquid drain trap shall be float operated with a ductile iron or
cast steel body and all stainless steel internals. The unit shall be
in-line repairable and equipped with a FNPT threaded connection
for the use of a balance line.
I N S TA L L AT I O N
The installation should include isolation valves to facilitate
maintenance and an in-line strainer. The trap must be level and
upright for the float mechanism to operate. The 2” and 21/2”
traps should not be supported by the piping alone. Trap must be
sized and properly located in the system. Piping hook-up must
include an equalizing line.
208
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
LIQUID DRAINERS
WLDE/WLDES Series
Float Type Liquid Drain Trap
1/2” NPT (Balancing Line Connection)
F
FLOW
C
E
A
D
B
DIMENSIONS & WEIGHTS –
Model-PMO Size
(PSIG)
2”
B
C
D
E
F
Weight
(lbs)
121/8
511/16
41/2
1/2
111/8
315/16
44
75/16
17/16
151/8
31/8
91
WLDE-50
2”
16
87/16
WLDE-50
21/2”
151/2
87/16
75/16
17/16
151/8
31/8
91
WLDE-125
21/2”
151/2
87/16
75/16
17/16
151/8
31/8
92
WLDE-200
11/2”
91/8
45/16
3
11/16
813/16
21/8
23
WLDE-200
2”
121/8
511/16
41/2
1/2
111/8
315/16
50
WLDE-200
21/2”
151/2
87/16
75/16
17/16
151/8
31/8
92
WLDES-300
21/2”
151/2
87/16
75/16
17/16
151/8
31/8
92
C A PA C I T I E S –
Determine differential pressure and capacity (lbs/hr) required.
Locate differential pressure on capacity chart; move down
column to capacity required. Make sure to select the correct
model based on the required inlet pressure. Example:
Application: 80,000 lbs/hr at 100 PSIG working pressure and
5 PSI differential pressure
Size/Model: 21/2” WLDE-125 @ 87,294 lbs/hr
LIQUID
DRAINERS
WLDE-20
HOW TO SIZE/ORDER
inches / pounds
A
Cold Water (lbs/hr)
Model-PMO
(PSIG) Size
Orifice
Size
1/4
1/2
1
2
5
10
Differential Pressure (PSI)
15
20
40
WLDE-20
2”
.937”
3929
5556
7858
11113
17571
24849
30433
WLDE-50
2”
2.125”
12248
18153
25312 37751
62218
90068
106565 123365
161302
176522
WLDE-50
21/2”
2.125”
19520
27605
39039 55209
87294 123452 151197 174588
246904
276047
WLDE-125
21/2”
2.125”
19520
27605
39039 55209
87294 123452 151197 174588
246904
276047 338088 390390 436469
WLDE-200
11/2”
.375”
1051
1486
2102
2973
4700
6647
8141
9401
13295
14864
18205
21021
WLDE-200
2”
.75”
3403
4813
6807
9626
15220
21525
26363
30441
43050
48131
58949
68068
WLDE-200
21/2”
1.5”
11100
15713
22200 31427
49690
70273
86066
99381
140546
157135 192450 222200 248452 272165 314269
WLDES-300 21/2”
1.5”
11100
15713
22200 31427
49690
70273
86066
99381
140546
157135 192450 222200 248452 272165 314269
50
75
100
125
150
200
23502
25745
29728
76102
83366
96263
35141
Note: Capacity for 250 PSI Differential Pressure = 365,232 lbs/hr; for 300 PSI Differential Pressure = 427,024 lbs/hr (for WLDES-300 only).
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
209
LIQUID DRAINERS
WLD600/601 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float Type Liquid Drain Trap
Model
Sizes
Connections
Body Material WLD600
Body Material WLD601
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WLD600 / WLD601
3/4”, 1”, 11/2”, 2”, 3”, 4”
NPT, SW, Flanged
Carbon Steel
316 Stainless Steel
450 PSIG
750ºF
* 990 PSIG @ 100˚F
* 750ºF @ 670 PSIG
* 3/4”- 2” only.
Note: For dimensions and capacities of 3” & 4” liquid drain traps,
refer to model FT600 in the Steam Trap section.
T Y P I C A L A P P L I C AT I O N S
MAINTENANCE
The WLD600/WLD601 Series are used in applications where
immediate and continuous discharge of large amounts of
liquid is required. Typically used in heavy industrial process
applications for draining condensate from air or other gases.
Close isolation valves prior to any maintenance. All working
components can be replaced with the drain trap remaining in
the pipeline. Repair kits include float, valve seat & disc and
gaskets. For full maintenance details see Installation and
Maintenance Manual.
HOW IT WORKS
LIQUID
DRAINERS
This liquid drainer has a float-operated valve that gives the trap
a modulating flow characteristic. The amount of liquid flowing
into the drainer is sensed by the float which positions the main
valve to discharge the liquid at the same rate as it is received.
F E AT U R E S
• All stainless steel internals for long service life
• Body & cover available in Carbon Steel or 316 SS
• Rugged construction designed for heavy industrial
applications
• In-line repairable
S A M P L E S P E C I F I C AT I O N
The liquid drain trap shall be float operated with a cast steel
body (or stainless steel body for WLD601) and all stainless steel
internals. The unit shall be in-line repairable and equipped with
a FNPT threaded connection for the use of a balance line.
I N S TA L L AT I O N
The installation should include isolation valves to facilitate
maintenance and an in-line strainer. The trap must be level
and upright for the float mechanism to operate. The 2”– 4”
traps should not be supported by the piping alone. Trap must
be sized and properly located in the system. Piping hook-up
must include an equalizing line.
OPTIONS
316 SS Body & Cover: use Model WLD601.
M AT E R I A L S
Body & Cover WLD600
Body & Cover WLD601
Cover Studs
Cover Nuts
Cover Gasket
Valve Assembly
Gasket, Valve Assembly
Pivot Assembly
Mounting Screws
Float
Cast Steel, ASTM A-216 WCB
Cast 316 SS
Steel, SA 193, Gr B7
Steel, SA 194, Gr 2H
Stainless Steel Reinforced Grafoil
Stainless Steel, AISI 431
Stainless Steel Reinforced Grafoil
Stainless Steel, 17-4 PH
Stainless Steel Hex Head, 18-8
Stainless Steel, ASTM 240 TY 304
HOW TO SIZE/ORDER
Determine differential pressure and capacity (lbs/hr) required.
Locate differential pressure on capacity chart; move down
column to capacity required. Make sure to select the correct
model based on the required inlet pressure. Example:
Application: 2,000 lbs/hr at 325 PSIG working pressure and
250 PSI differential pressure
Size/Model: 1” WLD600-450 @ 2,060 lbs/hr
210
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
LIQUID DRAINERS
WLD600/601 Series
Float Type Liquid Drain Trap
F min.
(for service)
AA
(Flanged)
A
(NPT/SW)
E
D
G
(Balancing Line NPT)
B
FLOW
C
DIMENSIONS & WEIGHTS –
inches / pounds
Size
A
AA
B
C
D
3/4"
61/8
101/8
21/8
37/16
1"
61/2
107/16
21/2
51/2
11/2"
913/16
14
37/16
2"
1113/16
16
31/8
Weight (lbs)
NPT/SW
FLG
E
F
G*
77/16
87/16
513/16
3/8
25
31
87/16
91/2
65/16
3/8
31
36
9
107/16
1115/16
713/16
1/2
82
91
77/16
111/8
135/16
613/16
1/2
93
107
* Balancing Port available with 1/2” flanged connection. Specify on order.
Cold Water (lbs/hr)
PMO
(PSIG)
Size
(in.)
Orifice
(in.)
2
5
65
65
65
65
145
145
145
145
200
200
200
200
300
300
300
300
450
450
450
450
3/4”
1”
11/2"
2”
3/4”
1”
11/2"
2”
3/4”
1”
11/2”
2”
3/4”
1”
11/2”
2”
3/4”
1”
11/2”
2”
.156
.276
.689
1.122
.126
.205
.591
.807
.106
.185
.531
.657
.079
.156
.531
.657
.063
.126
.531
.657
340
1390
4160
14730
210
690
2360
5840
170
450
1650
2890
80
340
1650
2890
50
210
1650
2890
520
2140
6430
22720
320
1070
3630
9010
260
690
2550
4460
130
520
2550
4460
70
320
2550
4460
10
20
30
730
1010 1220
2970 4130 5000
8920 12380 15000
31540 43790 53060
450
620
760
1490 2060 2500
5050 7010 8490
12510 17370 21040
360
500
600
960
1330 1620
3540 4910 5950
6190 8590 10410
180
250
300
730
1010 1220
3540 4910 5950
6190 8590 10410
100
140
160
450
620
760
3540 4910 5950
6190 8590 10410
40
1440
5730
17190
60790
870
2870
9730
24110
690
1850
6820
11930
340
1400
6820
11930
190
870
6820
11930
Differential Pressure (PSI)
50
65
70
80
1560
6370
19110
67570
960
3190
10810
26800
770
2060
7580
13250
380
1560
7580
13250
210
960
7580
13250
1770
7210
21630
76500
1090
3610
12240
30340
870
2330
8580
15010
430
1770
8580
15010
240
1090
8580
15010
1130
3740
12670
31420
900
2410
8890
15540
450
1830
8890
15540
250
1130
8890
15540
1200
3980
13500
33470
960
2570
9470
16560
480
1950
9470
16560
260
1200
9470
16560
100
145
200
250
1340
4420
15000
37200
1060
2860
10520
18400
530
2160
10520
18400
290
1340
10520
18400
1590
5270
17890
44360
1270
3410
12540
21940
630
2580
12540
21940
350
1590
12540
21940
1480
3970
14610
25540
730
3010
14610
25540
400
1860
14610
25540
820
3340
16230
28930
450
2060
16230
28390
300
890
3640
17700
30950
490
530
2250 2420
17700 19040
30950 33290
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
350
450
LIQUID
DRAINERS
C A PA C I T I E S –
590
2720
21440
37490
211
LIQUID DRAINERS
WLD1400 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float Type Liquid Drain Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WLD1400
1/2”, 3/4”, 1”, 11/2”, 2”
NPT
Ductile Iron
300 PSIG
450ºF
300 PSIG up to 450ºF
450ºF @ 300 PSIG
T Y P I C A L A P P L I C AT I O N S
S A M P L E S P E C I F I C AT I O N
The WLD1400 Series is used on air and gas applications as
drip traps on piping runs as well as drainage for systems and
various process vessels that have moderate condensate loads.
The liquid drain trap shall be float operated with a ductile iron
body, all stainless steel internals and a hardened valve seat.
The unit shall be in-line repairable and equipped with a FNPT
threaded connection for the use of a balance line.
HOW IT WORKS
This liquid drainer has a float-operated valve that gives the trap a
modulating flow characteristic. The amount of liquid flowing into
the drainer is sensed by the float which positions the main valve
to discharge the liquid at the same rate as it is received.
LIQUID
DRAINERS
F E AT U R E S
• All stainless steel internals
• Hardened valve seat for longer service life
• Ductile Iron body
• In-line repairable
I N S TA L L AT I O N
The installation should include isolation valves to facilitate
maintenance and an in-line strainer. The trap must be level and
upright for the float mechanism to operate. Trap must be sized
and properly located in the system. Piping hook-up must include
an equalizing line for drainers 1” and larger.
MAINTENANCE
Close isolation valves prior to any maintenance. All working
components can be replaced with the drain trap remaining in
the pipeline. Repair kits include float, valve seat & disc, and
gaskets. For full maintenance details see Installation and
Maintenance Manual.
HOW TO SIZE/ORDER
Determine differential pressure and capacity (lbs/hr) required.
Locate differential pressure on capacity chart; move down column
to capacity required. Make sure to select the correct model based
on the required inlet pressure. Example:
Application: 3,500 lbs/hr at 15 PSIG working pressure and
2 PSI differential pressure
Size/Model: 11/2” WLD1416-065 @ 4,300 lbs/hr
212
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
LIQUID DRAINERS
WLD1400 Series
Float Type Liquid Drain Trap
WLD1400 1/2” & 3/4”
WLD1400 1”
A
D
1/2” NPT
CL NPT
C
FLOW
C
FLOW
B
B
D
E
E
A
WLD1400 11/2” & 2”
C
FLOW
B
D
A
E
M AT E R I A L S
DIMENSIONS & WEIGHTS –
Size
A
B
C
D
E
Weight
1/2”, 3/4”
4.8
1.9
3.9
2.5
5.5
6
4.8
3.1
7.5
1.1
8.8
16
10.6
4.3
9.6
1.4
12
40
2”
11.9
4.3
9.6
1.4
12
40
Model
Ductile Iron
Garlock 3400
Stainless Steel,
Stainless Steel,
Stainless Steel,
Stainless Steel,
Stainless Steel,
Gr 5
AISI 304
300 Series
17-4 PH
AISI 420F
LIQUID
DRAINERS
1”
11/2”
C A PA C I T I E S –
Body & Cover
Gasket
Cover Screws
Float
Internals
Valve Seat
Valve Disc
inches/pounds
Cold Water (lbs/hr)
PMO Orifice
Size (PSIG) Size
20
Differential Pressure (PSI)
30
40
50
65
1
2
5
10
15
340
530
730
880
1010 1230 1410 1560 1770
530
730
880
1010 1230 1410 1560 1770
75
100
125
145
200
225
WLD1412-065
1/2”
65
.157”
250
WLD1413-065
3/4”
65
.157”
250
340
WLD1414-065
1”
65
.273”
980
1360 2090 2910 3520 4040 4890 5600 6220 7050
WLD1416-065
11/2”
65
.157” 3125 4300 6600 9350 11225 13250 16350 18700 20950 23500
WLD1417-065
2”
65
.273” 10600 14900 23300 31500 38150 44750 53600 61850 69200 76375
WLD1412-145
1/2”
145
.100”
110
150
230
320
380
440
530
610
680
770
940
1050 1130 1200
WLD1413-145
3/4”
145
.100”
110
150
230
320
380
440
530
610
680
770
940
1050 1130 1200
WLD1414-145
1”
145
.202”
490
670
1040 1440 1750 2000 2430 2780 3090 3500 4290 4760 5110 5350
WLD1416-145
11/2”
145
.100” 1575 2175 3400 4650 5525 6325 7750 8950 9925 11000 12300 13975 15300 16500
WLD1417-145
2”
145
.202” 3875 5450 8575 11500 12350 13200 20950 24050 27175 31050 34150 38500 42225 45950
WLD1412-225
1/2”
225
.079”
WLD1413-225
3/4”
225
.079”
WLD1414-225
1”
225
.184”
WLD1416-250
11/2”
250
.079” 1000 1375 2150 3050 3600 4100 5025 5775 6400 7300 8050 8900 9750 10550 12450 13150
WLD1417-250
2”
250
.184” 1900 2675 4250 5850 7000 8225 10050 11595 12950 15125 16700 18300 20200 22100 25850 27100
WLD1414-300
1”
300
.153”
60
80
130
180
60
80
130
320
450
690
230
320
500
220
250
300
340
380
430
530
590
630
690
740
780
180
220
250
300
340
380
430
530
590
630
690
740
780
960
1160 1330 1610 1850 2050 2330 2850 3170 3400 3710 3960 4100
690
840
960
1170 1340 1480 1680 2060 2290 2460 2680 2860 3020 3460
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
300
213
LIQUID DRAINERS
WLD1500 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Inverted Bucket Liquid Drain Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
WLD1501, WLD1502, WLD1504,
WLD1521, WLD1522, WLD1524
3/4”, 1”
NPT
Cast Iron
200 PSIG
450ºF
250 PSIG up to 450ºF
Note:
Trap should be ordered with an internal check valve or a separate
check valve needs to be placed in-line during installation on the
discharge side of the trap.
T Y P I C A L A P P L I C AT I O N S
MAINTENANCE
The WLD1500 Series Inverted Bucket Liquid Drain Traps
are recommended for the removal of oil and liquids from
compressed air systems.
Close isolation valves prior to any maintenance. All working
components can be replaced with the drain trap remaining in
the pipeline. Repair kits include lever & seat assembly, strainer
screen and gaskets. For full maintenance details see Installation
and Maintenance Manual.
HOW IT WORKS
LIQUID
DRAINERS
WLD1521/1522/1524
with Strainer
When there is condensate in the system, the inverted bucket
inside the liquid drain trap sits on the bottom of the unit due to
its weight. This allows condensate to enter the trap and to be
discharged through the seat orifice located at the top. When
air enters the trap, the bucket floats to the surface and closes off
the discharge valve, containing the air in the system. Eventually,
air is bled off through a small port in the top of the bucket and
the bucket sinks, repeating the cycle.
F E AT U R E S
• Hardened stainless steel valves and seat
• Only two moving parts
• Scrubber wire in air vent of bucket
• Discharge orifice at top, allowing for superior oil removal
• In-line repairable
M AT E R I A L S
Body & Cover
Nuts & Bolts
Gasket
Bucket
Scrubber
Lever & Seat Assembly
Valve & Seat
Integral Strainer*
Cast Iron, ASTM A-278 Class 30
High-Tensile Steel
Non-Asbestos Fiber
Stainless Steel
Stainless Steel
Stainless Steel
Hardened Stainless Steel
Stainless Steel
* WLD1521, WLD1522 & WLD1524 models only.
S A M P L E S P E C I F I C AT I O N
Drain trap shall be an inverted bucket trap design with cast iron
body, all stainless steel internals, hardened valve & seat, plus a
scrubber wire. The unit shall be in-line repairable.
I N S TA L L AT I O N
Installation should include isolation valves for maintenance
purposes and an in-line strainer. Trap must be installed in upright
position to function properly. It may be necessary to prime the
bucket trap by filling it with water through the priming port, prior
to startup.
214
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
LIQUID DRAINERS
WLD1500 Series
Inverted Bucket Liquid Drain Trap
C
C
A
A
Priming Port
Priming Port
B
FLOW
FLOW
B
D
D
WLD1521/1522/1524
with Strainer
WLD1501/1502/1504
DIMENSIONS & WEIGHTS –
Model
Size
B
3/4”
313/16
57/16
WLD1502
3/4”
313/16
615/16
WLD1504
1”
7
1113/16
WLD1521
3/4”
313/16
3/4”
313/16
7
WLD1501
WLD1522
WLD1524
1”
C A PA C I T I E S –
inches / pounds
C
D
Weight
5
213/16
5
5
45/16
6
713/16
7
27
61/8
5
37/16
5.5
71/8
5
47/16
6
127/16
713/16
77/16
30
LIQUID
DRAINERS
A
Cold Water (lbs/hr)
PMO
(PSIG)
Size
2
5
10
25
WLD1501
WLD1521
150
3/4”
145
220
325
510
720
900
WLD1502
WLD1522
200
3/4”
170
260
380
595
835
1045 1175 1315
1410 1550
1645
WLD1504
WLD1524
200
1”
500
760
1105
1740 2460 3065 3450 3865
4140 4555
4835
Model
Differential Pressure (PSI)
50
80
100
125
1010 1130
150
180
200
1215
HOW TO SIZE/ORDER
Determine differential pressure and capacity (lbs/hr) required. Locate differential pressure on
capacity chart; move down column to capacity required. Make sure to select the correct
model based on the required inlet pressure. Example:
Application: 200 lbs/hr at 30 PSIG working pressure and 5 PSI differential pressure
Size/Model:
3/4”
WLD1521-150 @ 220 lbs/hr (with strainer)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
215
LIQUID DRAINERS
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
WLD1703S
Thermodynamic Drain Trap
Model
Sizes
Connections
Body Material
Options
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WLD1703S
1/2”
NPT
Stainless Steel
Blowdown Valve
250 PSIG
750ºF
915 PSIG up to 250ºF
610ºF @ 750 PSIG
WLD1703S
with Strainer
WLD1703SB
with Strainer
& Blowdown
Valve
WLD1703SB
35/32
with Strainer &
Blowdown
Valve
T Y P I C A L A P P L I C AT I O N
17/16
The WLD1703S is used on air and gas applications as drip traps
on system mains and other piping runs. These drain traps are ideal
for outdoor applications where units are subject to freezing.
FLOW
HOW IT WORKS
The thermodynamic liquid drain trap has a cyclic on/off operation
with a disc that is pushed open when condensate is present and
pulled closed when the gas tries to escape.
217/32
31/2 with blowdown
F E AT U R E S
LIQUID
DRAINERS
• Rugged, stainless steel body and hardened seat
• Handles a wide range of pressures up to 250 PSIG
• Works in any position (horizontal preferable)
• Integral strainer with blowdown option
• Three-holed balanced discharge
• Freezeproof in vertical flow-down position
Units: inches
OPTIONS
Blowdown valve for easy maintenance.
M AT E R I A L S
Body
Disc
Cap
Strainer Screen
Blowdown Valve*
S A M P L E S P E C I F I C AT I O N
Drain Trap shall be thermodynamic disc type with an all
stainless steel construction. Body shall have a built-in strainer
with optional blowdown valve. Integral seat design and disc
to be hardened for long service life. Unit shall be capable of
installation in any orientation and self-draining when mounted
vertically with flow direction downwards.
Stainless
Stainless
Stainless
Stainless
Stainless
Steel,
Steel,
Steel,
Steel,
Steel,
HOW TO SIZE/ORDER
Select working pressure in capacity chart; read number
underneath to determine capacity (lbs/hr). Example:
Drain Trap can be installed in any position; however, horizontal
is preferred. Installation should include isolation valves for
maintenance purposes.
Application: 500 lbs/hr at 80 PSIG inlet pressure
Size/Model:
MAINTENANCE
1/2”
WLD1703S @ 530 lbs/hr
Dirt is the most common cause of premature failure. The strainer
should be periodically cleaned. For full maintenance details see
Installation and Maintenance Manual.
C A PA C I T I E S – Cold Water (lbs/hr)
Size
WLD1703S
1/2”
WLD1703SB
1/2”
2
5
10
25
90
130
190
300
Inlet Pressure (PSIG)
50
80
100
425
530
600
125
150
180
200
250
670
715
790
835
955
Note: 1) Maximum back pressure not to exceed 80% of inlet pressure.
2) To determine gallons per minute of flow, divide values in chart by 500. Example: 600 lbs/hr = 600 –: 500 = 1.2 GPM
216
420F
420
416
304
303
* WLD1703SB model only.
I N S TA L L AT I O N
Model
AISI
AISI
AISI
AISI
AISI
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
LIQUID DRAINERS
WLD1800/1800R Series
Guided Float Type Liquid Drain Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
WLD1800, WLD1800R
1/2”, 3/4”
NPT
Stainless Steel
400 PSIG
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
500˚F
400 PSIG @ 500˚F
500˚F @ 400 PSIG
WLD1800
(Non-Repairable)
WLD1800R
(Repairable)
T Y P I C A L A P P L I C AT I O N S
MAINTENANCE
The WLD1800/1800R Series are used on industrial air and gas
applications for drainage of liquid from systems.
Close isolation valves prior to any maintenance. The
WLD1800 is non-repairable unit. With the WLD1800R
all working components can be replaced. Repair kits include
float, lever & seat assembly, and gaskets. For full maintenance
details see Installation and Maintenance Manual.
HOW IT WORKS
This liquid drainer has a float-operated valve that gives the trap a
modulating flow characteristic. The amount of liquid flowing into
the drainer is sensed by the float which positions the main valve
to discharge the liquid at the same rate as it is received.
• Stainless steel body
• All stainless steel internals for longer service life
• Guided float ensures proper valve seating on every cycle
• Repairable unit available (WLD1800R)
S A M P L E S P E C I F I C AT I O N
The liquid drain trap shall have a guided-float operation
with a tamper proof seal welded stainless steel body and
all stainless steel internals. The unit shall be available with
an in-line repairable version. All units to be equipped with
FNPT threaded end connections.
Body
Inlet & Outlet Fittings
Float Assembly
Valve & Lever Assembly
Seat
*Gasket (Repairable only)
Washer, Seat
*Bolt, Hex, HD
*Nut, Jam
Stainless Steel, AISI 304
Stainless Steel, AISI 304
Stainless Steel, AISI 304
Stainless Steel, AISI 303
Hardened Stainless Steel
Grafoil
302 Stainless Steel
Stainless Steel, AISI 316
Stainless Steel, 18-8
LIQUID
DRAINERS
F E AT U R E S
M AT E R I A L S
* WLD1800R repairable models only.
I N S TA L L AT I O N
The installation should include isolation valves to facilitate
maintenance and an in-line strainer. The trap must be level
and upright for the float mechanism to operate. Trap must be
sized and properly located in the system.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
217
LIQUID DRAINERS
WLD1800/1800R Series
Guided Float Type Liquid Drain Trap
DIMENSIONS –
Orifice
Size
Model
WLD1811
Size
(Inlet x Outlet)
Height
A
3/4” x 1/2”
WLD1811R
WLD1812
7.5
4
7.9
5
7.5
4
5
7.5
4
WLD1813R
7.9
5
WLD1821
7.5
4
7.9
5
3/4” x 3/4”
WLD1813
1/2” x 1/2”
3/4” x 1/2”
WLD1821R
WLD1822
7.5
4
7.9
5
7.5
4
WLD1823R
7.9
5
WLD1831
7.5
4
.101”
3/4” x 3/4”
WLD1822R
WLD1823
1/2” x 1/2”
3/4” x 1/2”
INLET
Weight
(lbs)
7.9
.078”
WLD1812R
A
A
WLD1831R
7.9
5
FLOW
FLOW
WLD1832
7.5
4
2 5/8”
4.0”
7.9
5
7.5
4
WLD1800
(Non-Repairable)
WLD1800R
(Repairable)
7.9
5
.125”
3/4” x 3/4”
WLD1832R
WLD1833
1/2” x 1/2”
WLD1833R
LIQUID
DRAINERS
INLET
inches / pounds
C A PA C I T I E S – Cold Water (lbs/hr)
PMO* Orifice
(PSIG) Size
Series
.078”
1
2
5
10
15
60
80
120
130
180
Differential Pressure (PSI)
20
30
50
100
WLD1810
400
260
315
400
570
WLD1820
255
.101”
90
120
175
195
275
385
470
610
860
WLD1830
175
.125”
160
230
325
365
510
730
790
1150
1630
150
175
200
250
275
300
350
400
700
750
800
900
940
1050
1050
1120
1050
1125
1200
1350
1425
2000
2150
* PMO based on a liquid with a specific gravity of 1.0. Consult factory for the PMO of a liquid with specific gravity less than 1.0.
C A PA C I T Y C O R R E C T I O N FA C T O R S
Specific Gravity
1
.98
.96
.94
.92
.90
.88
.86
.84
.82
.80
.75
.70
.65
.60
.55
.50
Correction Factor
1
.99
.98
.97
.959
.949
.938
.927
.917
.906
.894
.866
.837
.806
.775
.742
.707
Note: To obtain capacity with a liquid other than water, multiply water capacity by correction factor.
HOW TO SIZE/ORDER
Determine differential pressure and capacity (lbs/hr) required. Locate differential pressure on capacity chart; move down column to
capacity required. Make sure to select the correct model based on the required inlet pressure. Example:
Application: 1,000 lbs/hr at 250 PSIG working pressure and 200 PSI differential pressure
Size/Model: 3/4” x 3/4” WLD1822 @ 1,200 lbs/hr (non-repairable) or
218
3/4”
x 3/4” WLD1822R @ 1,200 lbs/hr (repairable)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
LIQUID DRAINERS
WLD1900 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float Type Liquid Drain Trap
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WLD1900
3/4”, 1”, 11/4”, 11/2”, 2”
NPT
Cast Iron
250 PSIG
450ºF
250 PSIG up to 450ºF
450ºF @ 250 PSIG
WLD1900
3/4” & 1”
WLD1900
2”
T Y P I C A L A P P L I C AT I O N S
The WLD1900 Series is used in applications where immediate and
continuous discharge of liquid is required. Typically used in process
applications for draining condensate from air or other gases.
HOW IT WORKS
This liquid drainer has a float-operated valve that gives the trap a
modulating flow characteristic. The amount of liquid flowing into
the drainer is sensed by the float which positions the main valve
to discharge the liquid at the same rate as it is received.
WLD1900
11/4” & 11/2”
F E AT U R E S
LIQUID
DRAINERS
• All stainless steel internals
• Hardened valve seat for longer service life
• Cast Iron body
• In-line repairable
S A M P L E S P E C I F I C AT I O N
The liquid drain trap shall be float operated with a cast iron
body, all stainless steel internals and a hardened valve seat.
The unit shall be in-line repairable and equipped with a FNPT
threaded connection for the use of a balance line.
I N S TA L L AT I O N
M AT E R I A L S
The installation should include isolation valves to facilitate
maintenance and an in-line strainer. The trap must be level
and upright for the float mechanism to operate. Trap must be
sized and properly located in the system.
Body
Cover
Gasket
Cover Screws
Float
Internals
Valve Seat
Valve Disc
MAINTENANCE
Close isolation valves prior to any maintenance. All working
components can be replaced with the drain trap remaining in
the pipeline. Repair kits include float, valve seat & disc, and
gaskets. For full maintenance details see Installation and
Maintenance Manual.
Cast Iron
Cast Iron
Garlock 3400
Stainless Steel,
Stainless Steel,
Stainless Steel,
Stainless Steel,
Stainless Steel,
Gr 5
AISI 304
300 Series
17-4 PH
AISI 420F
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
219
LIQUID DRAINERS
WLD1900 Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Float Type Liquid Drain Trap
LIQUID
DRAINERS
DIMENSIONS –
inches/pounds
PMO
(PSIG)
Weight
(lbs)
Drawing
Model
Size
A
WLD1913-015
3/4”
15
9
A
WLD1914-015
1”
15
9
A
WLD1915-015
11/4”
15
9
15
21
15
53
C
WLD1916-015
11/2”
D
WLD1917-015
2”
A
WLD1913-030
3/4”
30
9
A
WLD1914-030
1”
30
9
A
WLD1915-030
11/4”
30
9
C
WLD1916-030
11/2”
30
21
D
WLD1917-030
2”
30
53
A
WLD1913-090
3/4”
90
9
A
WLD1914-090
1”
90
9
C
WLD1915-090
11/4”
90
21
C
WLD1916-090
11/2”
90
21
D
WLD1917-090
2”
90
53
A
WLD1913-150
3/4”
150
9
A
WLD1914-150
1”
150
9
C
WLD1915-150
11/4”
150
21
C
WLD1916-150
11/2”
150
21
D
WLD1917-150
2”
150
53
B
WLD1913-200
3/4”
200
20
B
WLD1914-200
1”
200
20
C
WLD1915-200
11/4”
200
21
C
WLD1916-200
11/2”
200
21
53
D
WLD1917-200
2”
200
B
WLD1913-250
3/4”
250
20
B
WLD1914-250
1”
250
20
C
WLD1915-250
11/4”
250
21
C
WLD1916-250
11/2”
250
21
D
WLD1917-250
2”
250
53
43/4”
1/2” NPT
81/4”
3”
25/8”
3/8”
87/8”
3/4”
21/4”
43/8”
DRAWING - B
43/4”
1/2” NPT
81/4”
3”
25/8”
3/8”
87/8”
3/4”
21/4”
43/8”
DRAWING - C
1/2” NPT
61/4”
31/8”
1/2” NPT
33/8”
37/8”
11/4”
107/8”
41/2”
57/8”
33/8”
1/2”
41/4”
DRAWING - A
220
121/4”
53/4”
DRAWING - D
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
LIQUID DRAINERS
WLD1900 Series
Float Type Liquid Drain Trap
HOW TO SIZE/ORDER
Determine differential pressure and capacity (lbs/hr) required. Locate
differential pressure on capacity chart; move down column to capacity
required. Make sure to select the correct model based on the required
inlet pressure. Example:
Application: 3,000 lbs/hr at 30 PSIG working pressure and
5 PSI differential pressure
Size/Model: 11/2” WLD1916-030
C A PA C I T I E S – Cold Water (lbs/hr)
Model
WLD1913-015
PMO Orifice
Size (PSIG) Size
3/4”
1
2
5
10
15
15
.250”
910
1260 1940 2690 3260
910
1260 1940 2690 3260
20
Differential Pressure (PSI)
30
40
50
75
100
WLD1914-015
1”
15
.250”
WLD1915-015
11/4”
15
.312” 1130 1570 2420 3360 4070
WLD1916-015
11/2”
15
.500” 2400 3330 5140 7140 8650
WLD1917-015
2”
15
.625” 3000 4170 6430 8920 10810
WLD1913-030
3/4”
30
.228”
830
1150 1770 2450 2970 3410 4130
WLD1914-030
1”
30
.228”
830
1150 1770 2450 2970 3410 4130
WLD1915-030
11/4”
30
.228”
830
1150 1770 2450 2970 3410 4130
WLD1916-030
11/2”
30
.390” 2200 3060 4710 6540 7930 9080 11000
125
150
2”
30
.500” 2400 3330 5140 7140 8650 9910 12000
WLD1913-090
3/4”
90
.166”
260
360
550
770
930
1060 1290 1480 1640 1990
WLD1914-090
1”
90
.166”
260
360
550
770
930
1060 1290 1480 1640 1990
WLD1915-090
11/4”
90
.312” 1130 1570 2420 3360 4070 4660 5650 6470 7190 8710
WLD1916-090
11/2”
90
.312” 1130 1570 2420 3360 4070 4660 5650 6470 7190 8710
WLD1917-090
2”
90
.422” 1350 1870 2890 4010 4860 5570 6740 7730 8590 10400
WLD1913-150
3/4”
150 .128”
150
210
330
450
550
630
760
870
970
1170
1340 1490 1590
WLD1914-150
1”
150 .128”
150
210
330
450
550
630
760
870
970
1170
1340 1490 1590
WLD1915-150
11/4”
150 .250”
910
1260 1940 2690 3260 3740 4530 5190 5760 6980 8000 8890 9800
WLD1916-150
11/2”
150 .250”
910
1260 1940 2690 3260 3740 4530 5190 5760 6980 8000 8890 9800
200
225
250
LIQUID
DRAINERS
WLD1917-030
175
WLD1917-150
2”
WLD1913-200
3/4”
150 .332” 1200 1670 2580 3580 4330 4960 6010 6890 7650 9270 10620 11810 12500
200 .166”
260
360
550
770
930
1060 1290 1480 1640 1990 2280 2530 2760 2970 3150
WLD1914-200
1”
200 .166”
260
360
550
770
930
1060 1290 1480 1640 1990 2280 2530 2760 2970 3150
WLD1915-200
11/4”
200 .250”
910
1260 1940 2690 3260 3740 4530 5190 5760 6980 8000 8890 9690 10420 11100
WLD1916-200
11/2”
200 .250”
910
1260 1940 2690 3260 3740 4530 5190 5760 6980 8000 8890 9690 10420 11100
WLD1917-200
2”
WLD1913-250
3/4”
250 .128”
150
210
330
450
550
630
760
870
970
1170
1340 1490 1630 1750 1860 1970 2070
WLD1914-250
1”
250 .128”
150
210
330
450
550
630
760
870
970
1170
1340 1490 1630 1750 1860 1970 2070
WLD1915-250
11/4”
250 .203”
600
830
1280 1770 2150 2460 2980 3420 3800 4600 5270 5860 6390 6870 7320 7740 8140
WLD1916-250
11/2”
250 .203”
600
830
1280 1770 2150 2460 2980 3420 3800 4600 5270 5860 6390 6870 7320 7740 8140
WLD1917-250
2”
250 .250”
910
1260 1940 2690 3260 3740 4530 5190 5760 6980 8000 8890 9690 10420 11100 11740 12340
200 .281” 1960 2720 4200 5830 7060 8090 9800 11230 12480 15120 17320 19250 20980 22570 23800
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
221
LIQUID DRAINERS
Installation Guidelines
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
for Liquid Drain Traps
PROPER INSTALLATION OF LIQUID DRAINERS
Liquid Drain Traps are primarily used to remove condensation from air and other non-condensable gas lines. The proper
liquid drain trap should be selected based on several parameters, including installation limitations, pressure conditions and
the amount of liquid to be drained.
If a Ball & Float Type Drain Trap is selected, typically it is necessary to add a Balancing (or Equalizing) Line to allow any air
or gases trapped in the drainer to escape. If the Balancing Line is not installed, these gases can prevent proper operation by
air-binding the trap. Inverted Bucket Type & Disc Type Traps will self-vent eliminating the risk of air-binding and therefore do
not require Balancing Lines.
Figure 1
Draining Condensate from an Air Line Drip Pocket with a Float Type Drainer
ISOLATION
VALVE
DRAIN
TRAP
TO
DRAIN
LIQUID
DRAINERS
STRAINER
Figure 2
Due to the small amount of condensate
normally found in drip leg applications,
a small Ball & Float Type Liquid Drainer
can be used and a Balancing Line is not
required. However, a minimum pipe
connection size of 3/4” is recommended
for this type of application.
Draining Condensate from a Separator on a Large Air Main with a Float Type Drainer
BALANCING
LINE
SEPARATOR
Due to the large amount of condensate
normally found in air mains or from the
discharge of air compressors, a larger
Ball & Float Type Liquid Drainer must be
used and a Balancing Line is required.
TO
DRAIN
DRAIN
TRAP
222
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
LIQUID DRAINERS
Installation Guidelines
for Liquid Drain Traps (continued)
Figure 3
Draining Condensate from a Receiver with a Float Type Drainer
BALANCING
LINE
RECEIVER
WATER LINE
When draining a receiver, a large trap
is typically required in order to handle
the liquid load. If a Ball & Float Type
Liquid Drainer is used, a Balancing
Line is required. Make certain that
the Balancing Line connection to
the receiver is above the water line.
TO
DRAIN
DRAIN
TRAP
Figure 4
Draining Condensate from a Receiver with an Inverted Bucket Trap
PRIMING
PLUG
WATER LINE
TO
DRAIN
In this example, an Inverted Bucket Type
Liquid Drain Trap is used. The Inverted
Bucket Trap has a small internal orifice
which permits the venting of air, and
therefore does not require a Balancing
Line. However, it is important to make
certain that the Inverted Bucket Trap is
primed with liquid before operation.
LIQUID
DRAINERS
RECEIVER
Note: See installation manual for proper
priming procedures.
DRAIN
TRAP
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
223
Specialty Products
STAINLESS STEEL CHECK VALVES
Watson McDaniel Check Valves are available in all 316 SS construction in 1⁄2” thru 3” sizes and were specifically designed to handle the difficult environments associated
with steam and hot condensate service. As a standard procedure, check valves should be installed on the discharge side of all steam traps to eliminate backflow into
the trap. With the specially designed 1⁄4 PSI low cracking pressure spring, these check valves come standard on all Watson McDaniel Pressure Motive Pumps.
SUCTION/MIXING TEES
DRIP PAN ELBOWS
This is a unique and specialized product used for
blending, mixing, aeration or even heating by mixing
steam and water together. Available in Cast Iron,
Bronze and Stainless Steel.
Drip Pan Elbows are used to collect and
remove condensate. Typically used with steam
boilers, pressure relief valves, safety valves and
steam pressure vessels and lines.
SPECIALTY
PRODUCTS
Y–STRAINERS
Strainers remove scale and dirt from steam systems
and are designed to protect critical components such
as Regulators and Steam Traps from damage. These
strainers are available in Cast Iron, Carbon Steel and
Stainless Steel up to 4” in size.
224
EJECTORS
AIR ELIMINATORS
Ejectors are used for non electric pumping of fluids or evacuating a
tank or vessel of air or other gases. Commonly used on sterilizing
equipment for pre and post evacuation of the chamber.
Air Eliminators are used on tanks or piping systems to vent entrained
air without allowing the liquid inside the tank or piping to escape.
Available in Cast Iron and Stainless Steel.
SAFETY RELIEF
VALVES
Pressure relief valve standards regarding design, installation,
performance and certification are covered in codes developed by
the American Society of Mechanical Engineers (ASME) in Section I
(for power boilers) and Section VIII (for pressure vessels). Watson
McDaniel Safety Relief Valves are ASME qualified for steam service
and are available in Bronze and Cast Iron in 1/2” thru 6” sizes.
EXHAUST HEADS
Exhaust heads are used to separate entrained water
from steam prior to being discharged directly to the
atmosphere, preventing damage to rooftops and
other equipment.
STEAM TRAP TEST VALVES
Test Valves can be installed downstream of any steam trap to visually
inspect the discharge of condensate from the traps. Available in Bronze
and Stainless Steel up to 1” in size.
VACUUM
BREAKERS
FREEZE/SCALD
PROTECTION VALVES
Vacuum Breakers “break the vacuum” caused
by the condensing of steam or draining of
liquid. These are primarily positioned on the
top of heat exchangers, allowing condensate
to properly drain from the system.
Freeze Protection valves automatically open
and dump liquid to protect equipment from freeze
damage. Scald Protection valves automatically open
and dump overheated liquid from a system to protect
personnel from possible injury due to scalding.
SPECIALTY
PRODUCTS
STEAM HUMIDIFIERS
Watson McDaniel offers a complete line of steam
humidification products for controlling humidity in
commercial offices, hospitals, warehouses and
various types of industrial facilities.
THERMOSTATIC
AIR VENTS
AIR/STEAM MOISTURE
SEPARATORS
Air Vents purge unwanted air from steam systems
which can inhibit the steam from entering process
equipment, vessels and piping. Air vents should
be placed at all high points in the system but
primarily on all pieces of heat transfer equipment.
Separators are used for the removal of entrained
moisture in steam and compressed air lines.
Separators should be placed before all regulating
valves to eliminate problems caused by water
logging and wire drawing of the valve seats.
225
SPECIALTY
PRODUCTS
Specialty Products
226
Model/Series
Product
Body Material
PMO
(PSIG)
Sizes
Connection
WSI, WIP, WSX
Steam Humidifiers
WSVB
Stainless Steel
60
–
–
227-231
Safety Relief Valve
Bronze
250
1/2” - 21/2”
NPT
232-233
WSVI
Safety Relief Valve
Cast Iron
250
11/2” - 6”
NPT, FLG
234-235
WCIY
Strainer
Cast Iron
125-500
1/2” - 4”
NPT, FLG
236
WCSY
Strainer
Carbon Steel
600
1/2” - 2”
NPT, SW
237
WSSY
Strainer
Stainless Steel
600
1/2” - 2”
NPT, SW
237
SUCTION TEE
Mixing Tee
Cast Iron, Bronze, SS
250-450
1/2”- 3”
NPT
238-239
W-EJECT/ELL/LM
Ejector
Cast Iron, Bronze
100
1/2” - 2”
NPT
240-243
AV813W
Air Eliminator
Cast Iron
150
3/4”
NPT
244
AE1800/1800R
Air Eliminator
Stainless Steel
400
1/2”, 3/4”
NPT
245
AV2000C
Air Vent
Stainless Steel
650
1/2”, 3/4”
NPT
246
AVT125
Air Vent
Brass
125
1/2”, 3/4”
NPT
247
WDS
Separator
C.I., Carbon Steel
250/300
3/4” - 12”
NPT, SW, FLG
248-249
WCIS
Separator
Cast Iron
145/200
3/4” - 4”
NPT, FLG
250-251
WEH
Exhaust Head
C.I., Carbon Steel, SS
NA
1” - 10”
NPT, FLG
252-253
WVBSS
Vacuum Breaker
Stainless Steel
300
1/2”
NPT
254
WSSCV
Check Valve
Stainless Steel
500
1/2” - 3”
NPT, SW
255
WFPV
Freeze Protection Valve Stainless Steel
200
1/2”
NPT
256
WSPV
Scald Protection Valve
Stainless Steel
200
1/2”, 3/4”
NPT
257
WDPL
Drip Pan Elbow
Cast Iron
250
3/4” - 8”
NPT, FLG
258
WFLV
Flash Tank
Carbon Steel
150
6”, 8”, 12”, 16”
FLG
259
WSTTV
Steam Trap Test Valve
Bronze, Stainless Steel
150
1/2” - 1”
NPT
260
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Page No.
S P E C I A LT Y P R O D U C T S
Steam Humidifiers
Steam Injection
Humidification Overview
Single Tube Humidifier
Steam Supply
Connection
Duct
Mounting
Bracket
Strainer
Separator
Injection Tube
Steam Trap
Single Tube (WSI)
• For direct injection of steam humidification into
air stream
• Many tube length options to accommodate various
duct widths
• Recommended for relatively small duct heights where
dissipation distance is not critical
Steam Emission Ports
Steam Control Valve
& Actuator
3/4” NPT Condensate Connection
Multiple Tube Humidifier
Strainer
Multiple Tube (WSI)
“A”
• Used for improved dissipation distances in duct heights
above 20”
• Number of tubes can be selected to optimize performance
• Many tube length options to accommodate various
duct widths
Valve
“B”
Injection Tubes
“A”
“C”
“B”
Trap
Trap
SPECIALTY
PRODUCTS
Separator
Insty-Pac Manifold-Style Humidifier
Insty-Pac (WIP)
• Custom-engineered manifold design for
job-specific requirements
• Used when dissipation distances are critical for
optimum air stream humidification
• Number of tubes properly selected to achieve
design requirements
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
227
S P E C I A LT Y P R O D U C T S
Steam Humidifiers
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Steam Injection
Humidification Overview
Steam Heat Exchanger (WSX)
• Provides humidification for today’s stringent indoor
air quality requirements
• Utilizes boiler steam to heat tap water providing
injection steam free from chemical or mineral carry-over
• Ideal for use where electric humidifiers would be
cost-prohibitive
Mini-Mult Front View
7.5” (19.1)
Mini-Mult
B
Tube Insertion Length
• Designed for applications that require small
humidification loads in a small duct size
• Ideal for any high humidity job where fast steam
dissipation in cool air in a short-run duct is essential
• Number of tubes can be specified per duct size and
job requirements
A
(ref. note #1)
3” (7.6)
Typ. Centers
SPECIALTY
PRODUCTS
3/4” NPT Condensate Connection
(see Side View)
Electric Fan
115 VAC single phase
9 watt / 3 amp.
Area Type
• Designed for applications that require humidification
without the use of duct work
• Ideal for area humidity control in paper, textile or wood
manufacturing applications as well as printing plants
and storage areas
Steam Control
Valve & Actuator
Air
Flow
C
B
Tube Diameter
A
Dia
Separator
3/4” NPT Condensate Connection
D
228
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
WSI & WIP
Steam Humidifiers
Series “WSI”
Steam Injection
Humidifiers
Series “WIP”
INSTY-PAC
Steam Injection
Humidifiers
T Y P I C A L A P P L I C AT I O N S
F E AT U R E S
A Steam Injection Humidifier supplies precise humidity
control from the facility steam boiler into the air stream.
Typically used in manufacturing plants, printing plants,
commercial offices, hospitals and any other facilities
which require a critical balance between temperature
and humidity control.
• Provides accurate humidity control
• Simple and cost efficient system to meet high
HOW IT WORKS
The Steam Injection Humidifier receives steam directly from
the boiler (live steam), removes the condensate and injects
the dry steam into the duct work or an air stream. Live
steam enters a steam jacket to preheat the injection tube.
Steam then flows into the separator where condensate is
removed. Dry steam is then discharged through the injection
tube for circulation into the air stream.
Live
Steam
In
Dry Steam Out
Injection Tube
Separator
Dry Steam
Steam/Condensate
Condensate
Removal
permanent bond
• Separator & Steam Jacket included to provide
highest quality steam
I N S TA L L AT I O N
Distributor must be mounted level in a straight section of duct,
with steam outlets facing into the air stream. A steam trap
should be installed on the separator outlet, allowing for proper
condensate removal. Also include a strainer upstream of
humidifier inlet.
MAINTENANCE
SPECIALTY
PRODUCTS
Valve
humidity requirements
• Available for regular or purified boiler steam
• Available for single or multiple tube applications
• Capacities up to 2900 lbs/hr
• Pressure ranges from 2-60 PSIG
• Available for pneumatic or electric controls
• All stainless steel distributors and nozzles ensure
The strainer should be cleaned periodically. The valve, actuator,
steam trap and temperature switch should be inspected annually
to confirm proper operation. For full maintenance details, see
installation and maintenance manual.
HOW TO ORDER
M AT E R I A L S
Separator
Dispersion Tube
304 SS
304 SST
Consult factory for sizing and selection. Provide required
humidification load, steam pressure at humidifier inlet, duct
dimensions, actuator type and any accessories.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
229
S P E C I A LT Y P R O D U C T S
WSI & WIP
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Steam Humidifiers
Strainer
Single Tube
Valve
Injection Tube
Separator
Dry Steam
Steam/Condensate
Trap
Strainer
Multiple Tube
To prevent condensation on in-duct objects, such as dampeners, coils,
filters or turning vanes, it is very important that the dissipation distance
be shorter than the distance from the humidifier to the in-duct object.
The following recommendations should be used when designing a
multiple injection tube system:
Valve
Injection Tubes
Trap
Trap
Recommended Qty. of Tubes †
2
3
4
5
6
† Final duct relative humidity, air velocity and available dissipation distance will
affect the quantity of tubes required.
Separator
Insty-Pac Tube
Duct Height
Up to 36”
37” – 48”
49” – 72”
73” – 96”
Above 96”
Strainer
Control Valve
Strainer
Trap
Trap
MODEL NUMBERS
SPECIALTY
PRODUCTS
Insty
Pac
Single
Tube
Multi
Tube
BP-1
50-10
50
BP-2
60-20
60
BP-3
70-20
70
BP-4
80-30
80
BP-5
N/A
90
230
Valve Size
NPT
Cv
.10 (1/2”)
.22 (1/2”)
.40 (1/2”)
.75 (1/2”)
.95 (1/2”)
1.30 (1/2”)
1.75 (1/2”)
2.20 (1/2”)
2.80 (1/2”)
3.25 (1/2”)
4.40 (1/2”)
5.50 (3/4”)
6.20 (3/4”)
7.50 (3/4”)
8.20 (1”)
10.0 (1”)
12.0 (1”)
20.0 (1-1/4”)
28.0 (1-1/4”)
40.0 (2”)
2
1.6
3.5
6.4
12
15
21
28
35
45
52
70
85
96
116
123
150
180
300
420
300
3
1.9
4.2
7.6
14
18
24
33
41
53
61
83
104
117
142
155
189
228
375
511
375
4
2.3
5.0
9.1
17
21
29
40
50
64
73
98
123
138
166
180
220
264
440
612
440
5
2.6
5.6
10
19
24
33
44
55
70
82
110
138
155
186
204
248
296
494
686
494
6
2.8
6.5
11
21
27
36
49
61
78
90
121
150
169
204
223
272
326
540
756
540
Steam Pressure to Humidifier Supply Connection (PSIG)
7
8
9
10 11 12 13 14 15 20
3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.3 4.4 5.1
6.6 7.1 7.6
8
8
9
9
10 10 11
12 13 14 15 15 16 16 17 18 20
23 24 26 27 28 30 31 32 33 38
29 31 33 34 36 38 39 40 42 48
39 42 44 47 49 51 53 55 57 66
52 55 60 63 66 69 72 74 76 88
66 71 75 79 82 86 90 93 95 111
84 90 96 100 104 109 114 118 121 141
96 104 110 116 121 127 132 137 140 163
130 141 149 157 163 172 178 185 190 221
161 176 186 196 204 213 222 231 235 275
182 198 210 220 230 240 250 259 265 310
220 238 253 265 277 289 302 312 320 373
240 261 275 290 303 313 328 341 349 407
293 317 335 354 370 380 400 414 423 497
351 378 402 422 441 456 465 492 505 595
582 630 666 702 736 750 772 814 834 990
812 873 927 980 1024 1044 1075 1128 1165 1383
582 630 666 702 736 750 772 814 834 990
25
5.7
13
23
43
54
74
99
123
157
181
244
305
343
412
443
540
648
1060
1484
1060
30
6.3
14
25
47
59
80
107
134
171
198
256
333
372
450
488
595
714
1180
1638
1180
35
6.8
15
27
50
64
87
116
146
186
214
290
360
403
487
529
645
774
1280
1778
1280
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
40
7.3
16
29
54
68
93
124
156
199
229
310
385
434
525
570
695
828
1376
1912
1376
45
7.7
17
31
57
72
99
132
165
210
244
328
408
459
555
603
735
876
1460
2044
1460
50
8.1
18
33
60
76
104
139
174
221
257
345
430
485
585
635
770
-
55
8.5
19
34
63
80
109
146
183
233
270
363
451
508
614
668
810
-
60
8.9
20
36
66
84
114
153
192
244
282
381
471
529
640
703
850
-
S P E C I A LT Y P R O D U C T S
WSX
Steam Humidifiers
T Y P I C A L A P P L I C AT I O N S
Steam Heat Exchanger Humidifiers can be used for humidification
applications where steam injection is to be used, but chemically
treated boiler steam is not allowable. They provide humidification
to meet stringent indoor air quality requirements and are ideal for use
where electric humidifiers would be cost-prohibitive.
HOW IT WORKS
The WSX Steam Heat Exchanger Humidifier works by utilizing
existing boiler steam to heat tap water, providing injection steam
free from chemical or mineral carry-over. Several steam injection
dispersion methods are available to suit the application requirements.
F E AT U R E S
• Single unit capacity up to 2,035 lbs/hr
• 304 Stainless Steel reservoir construction
• Stainless Steel heat exchanger
• Unique side-entry heat exchanger provides a large clean
out access section without disturbing the cover or injection
tube system’s steam supply piping
• Pneumatic modulating steam control valve
• Tri-Probe level controller
• Adjustable surface water flusher
• Motorized drain valve with brass body
• User-adjustable automatic drain system
• Float & Thermostatic steam trap(s)
• Inlet “Y” strainer(s)
OPTIONS
INTAC microprocessor controller
Electric modulating actuator
Factory-mounted control panel
NEMA 4 weather-tight control panel
Control panel door lock
Seasonal End-of-Use drain system
Door interlock safety switch
Factory-insulated reservoir
Support legs
Wall brackets
Freeze protection
Stand-by water temperature sensing
Blower Pack for area humidification
Variable air volume control
Outdoor air temperature sensing
Drain tempering kit
Remote INTAC microprocessor controller
Outdoor enclosure
Humidifier Capacity – lbs/hr (kg/hr)
Model
†
Steam Pressure in at the control valve – PSIG (kPa)
5 (34.5)
10 (69.0)
13 (89.6)
15 (103.4)
SX-1R
32 (14.5)
76 (34.5)
100 (45.3)
122 (55.3)
SX-2R
SX-3R
SX-4R
52 (23.6)
102 (46.3)
192 (87.1)
108 (48.9)
228 (103.4)
484 (219.5)
140 (63.5)
292 (132.5)
655 (297.1)
169 (76.7)
348 (157.8)
753 (341.7)
SX-8R
370 (167.8)
840 (381.0)
1200 (544.3)
1350 (612.4)
SX-12R
560 (254.0)
1265 (573.8)
1810 (821.0)
2035 (923.1)
† Actual humidifier capacity may vary due to the heat loss from the humidifier
reservoir. The ambient air temperature, air velocity and injection tube system
will affect the rate of the heat loss from the reservoir.
The capacities shown are based on a non-insulated humidifier reservoir
tested in a 70˚F environment.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
SPECIALTY
PRODUCTS
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
231
S P E C I A LT Y P R O D U C T S
WSVB Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Safety Valves
“UV” Steam-ASME Section VIII Pressure Vessels
Model
Sizes
WSVB
1/2”, 3/4”, 1”, 11/4”, 11/2”,
2”, 21/2”
NPT
Bronze
250 PSIG (steam)
406 ºF
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
T Y P I C A L A P P L I C AT I O N S
The WSVB Safety Relief Valves are used for over-pressure
protection on unfired pressure vessels in saturated steam
systems.
HOW IT WORKS
As safety valves open on a non-compressible fluid
application, the disc lifts directly proportional to the increase
in system pressure over the valve set point. Safety relief
valves not only provide over pressure protection resulting
from thermal expansion of liquids, but will respond with a
rapid full opening “pop” action on systems which contain or
generate steam, air or gas.
F E AT U R E S
• Stainless Steel springs
• Teflon®-PFA seat resists corrosive boiler chemicals
• Two control rings for maximum performance &
adjustability
• Tapped body drain allows piping of condensate away
from equipment
S A M P L E S P E C I F I C AT I O N
B
SPECIALTY
PRODUCTS
Safety valves shall be cast bronze construction with
stainless steel springs, Teflon-PFA seats and stainless steel
stems. Units shall be qualified to the ASME Boiler Code,
Section VIII and suitable for steam service.
DIMENSIONS & WEIGHTS –
232
Model
No.
WSVB-12M-13S-D
WSVB-13M-13S-D
WSVB-13M-14S-E
WSVB-14M-14S-E
WSVB-14M-15S-F
WSVB-15M-15S-F
WSVB-15M-16S-G
WSVB-16M-16S-G
WSVB-16M-17S-H
WSVB-17M-17S-H
WSVB-16S-18S-J
WSVB-17M-18S-J
WSVB-18M-18S-J
Orifice
Size
D
D
E
E
F
F
G
G
H
H
J
J
J
Inlet x Outlet
MNPT x FNPT
1/2” x 3/4”
3/4” x 3/4”
3/4” x 1”
1” x 1”
1” x 11/4””
11/4” x 11/4”
11/4” x 11/2”
11/2” x 11/2”
11/2” x 2”
2” x 2”
11/2” FNPT x 21/2” FNPT
2” x 21/2”
21/2” x 21/2”
inches / pounds
A
2.21
2.21
2.50
2.64
2.95
2.95
3.38
3.38
3.63
3.63
3.80
4.06
4.50
B
6.52
6.52
7.16
7.30
9.34
9.34
11.01
11.01
11.96
11.96
14.00
14.25
14.68
C
1.37
1.37
1.75
1.75
2.00
2.00
2.37
2.37
2.75
2.75
3.50
3.50
3.50
D
0.84
0.84
1.06
1.06
1.44
1.44
1.69
1.69
2.06
2.06
2.06
2.06
2.06
Weight
(lbs)
1.6
1.6
2.0
2.2
4.1
4.3
7.4
7.6
11.5
11.6
20.0
19.9
20.8
A
D
C
M AT E R I A L S
Body
Guide Ring
Disc
Seat Insert
Stem
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Bronze
Brass
Brass
Teflon®-PFA
SST
S P E C I A LT Y P R O D U C T S
WSVB Series
Safety Relief Valves
C A PA C I T I E S –
“UV” Steam-ASME Section VIII Pressure Vessels
Pounds of saturated steam per hour (lbs/hr)
Set
Pressure
(PSIG)
Orifice “D”
.129”
Diameter
Orifice “E”
.230”
Diameter
Orifice “F”
.359”
Diameter
Orifice “G”
.586”
Diameter
Orifice “H”
.919”
Diameter
Orifice “J”
1.509”
Diameter
15
179
320
499
820
1279
2100
20
207
369
576
945
1474
2421
25
234
418
652
1070
1670
2742
30
262
467
729
1195
1865
3063
35
292
521
813
1333
2080
3416
40
322
574
897
1471
2295
3769
45
352
628
981
1609
2510
4122
50
383
682
1065
1747
2725
4475
55
413
736
1149
1885
2941
4828
60
443
790
1233
2022
3156
5181
65
473
844
1317
2160
3371
5535
70
503
897
1401
2298
3586
5888
75
534
951
1485
2436
3801
6241
80
564
1005
1569
2574
4016
6594
85
594
1059
1653
2712
4231
6947
90
624
1113
1737
2849
4446
7300
95
654
1167
1821
2987
4661
7653
100
684
1220
1905
3125
4876
8007
105
715
1274
1989
3263
5091
8360
110
745
1328
2073
3401
5306
8713
115
775
1382
2157
3539
5521
9066
120
805
1436
2241
3677
5736
9419
835
1489
2325
3814
5951
9772
130
866
1543
2409
3952
6167
10125
135
896
1597
2493
4090
6382
10479
140
926
1651
2577
4228
6597
10832
145
956
1705
2661
4366
6812
11185
150
986
1759
2745
4504
7027
11538
155
1017
1812
2829
4641
7242
11891
160
1047
1866
2913
4779
7457
12244
165
1077
1920
2997
4917
7672
12597
170
1107
1973
3081
5055
7887
12951
180
1167
2081
3249
5331
8317
13657
190
1228
2189
3417
5606
8747
14363
200
1288
2296
3585
5882
9177
15069
210
1349
2404
3753
6158
9608
15776
220
1409
2512
3921
6433
10038
16482
230
1469
2619
4089
6709
10468
17188
240
1530
2727
4257
6985
10898
17894
250
1590
2834
4425
7260
11328
18601
Approx.
1 PSI Incr.
6.0
10.8
16.8
27.6
43.0
70.6
SPECIALTY
PRODUCTS
125
Notes: 1) Ratings are 90% of actual capacity.
2) For Set Pressures over 250 PSIG, consult factory.
3) For other sizes, consult factory.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
233
S P E C I A LT Y P R O D U C T S
WSVI Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Safety Valves
“UV” Steam-ASME Section VIII Pressure Vessels
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
WSVI
11/2”, 2”, 21/2”, 3”, 4”, 6”
NPT, Flanged
Cast Iron
250 PSIG (Steam)
422º F
T Y P I C A L A P P L I C AT I O N S
The WSVI Safety Valves are used for over-pressure protection on
unfired pressure vessels in saturated steam systems.
HOW IT WORKS
As safety valves open on a non-compressible fluid application,
the disc lifts directly proportional to the increase in system
pressure over the valve set point. Safety valves not only provide
over pressure protection resulting from thermal expansion of
liquids, but will respond with a rapid full opening “pop” action
on systems which contain or generate steam air or gas.
F E AT U R E S
• Stainless Steel wetted trim nozzle & disc
• Metal to metal seating, lapped to optimum flatness
• Two control rings assure maximum performance &
adjustability
S A M P L E S P E C I F I C AT I O N
Safety valves shall be high capacity design with cast iron
construction featuring rust-proof steel stems, springs, washers
and metal-to-metal lapped seats. Units shall be qualified to the
ASME Boiler Code Section VIII and suitable for steam service.
DIMENSIONS & WEIGHTS –
SPECIALTY
PRODUCTS
Model
No.
WSVI-16F-18S-J
WSVI-17F-19S-K
WSVI-17S-19S-K
WSVI-18F-19S-K
WSVI-19F-19S-K
WSVI-18F-20S-L
WSVI-18S-20S-L
WSVI-19F-20S-L
WSVI-20F-20S-L
WSVI-19S-20S-M
WSVI-19F-20S-M
WSVI-20F-20S-M
WSVI-20F-22F-N
WSVI-20F-22F-P
WSVI-22F-23F-Q
WSVI-22F-23F-R
234
Valve Size
Inlet x Outlet
11/2” 250#
2” 250#
2” FNPT
21/2” 250#
3” 250#
21/2” 250#
21/2” FNPT
3” 250#
4” 250#
3” FNPT
3” 250#
4” 250#
4” 250#
4” 250#
6” 250#
6” 250#
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
21/2” FNPT
3” FNPT
3” FNPT
3” FNPT
3” FNPT
4” FNPT
4” FNPT
4” FNPT
4” FNPT
4” FNPT
4” FNPT
4” FNPT
6” 125#
6” 125#
8” 125#
8” 125#
A
inches / pounds
Orifice
Size
A
B
C
J
K
K
K
K
L
L
L
L
M
M
M
N
P
Q
R
15
16
16
16
16
22
22
22
22
22
22
22
28
28
42
42
4
4
4
4
4
5.13
5.13
5.13
5.13
5.13
5.13
5.13
7.25
7.25
10
10
4.31
4.63
4.63
4.63
4.63
5.63
5.63
5.63
5.63
5.63
5.63
5.63
6.75
6.75
9.25
9.25
Hex Flat
D
3.75
5.38
5.38
Weight
(lbs)
35
36
37
41
45
84
81
85
90
80
87
95
210
215
530
530
C
B
D
M AT E R I A L S
Body
Guide Ring
Disc
Stem
Cast Iron
Brass
SST
Steel-Plated
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
WSVI Series
Safety Relief Valves
C A PA C I T I E S –
Pounds of saturated steam per hour (lbs/hr)
“J”= 1.358
“K” = 1.926
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
150
155
160
165
170
175
180
185
190
195
200
205
210
215
220
225
230
235
240
245
250
Approx. 1 PSI incr.
2008
2315
2622
2929
3267
3604
3942
4280
4618
4955
5293
5631
5969
6306
6644
6982
7319
7657
7995
8333
8670
9008
9346
9684
10021
10359
10697
11034
11372
11710
12048
12385
12723
13061
13399
13736
14074
14412
14749
15087
15425
15763
16100
16438
16776
17113
17451
17789
68
2848
3283
3719
4154
4633
5112
5591
6070
6549
7028
7507
7986
8465
8944
9423
9902
10381
10860
11339
11818
12297
12776
13255
13734
14213
14692
15171
15650
16129
16608
17087
17566
18045
18524
19003
19482
19961
20440
20919
21398
21876
22355
22834
23313
23792
24271
24750
25229
96
Orifice Letter / Area in Square Inches
“L” = 2.990
“M” = 3.774
“N” = 4.550
4421
5097
5773
6449
7193
7936
8680
9423
10167
10911
11654
12398
13141
13885
14629
15372
16116
16859
17603
18346
19090
19834
20577
21321
22064
22808
23552
24295
25039
25782
26526
27270
28013
28757
29500
30244
30988
31731
32475
33218
33962
34706
35449
36193
36936
37680
38424
39167
149
5580
6433
7287
8140
9079
10017
10956
11894
12833
13771
14710
15649
16587
17526
18464
19403
20341
21280
22218
23157
24096
25034
25973
26911
27850
28788
29727
30666
31604
32543
33481
34420
35358
36297
37236
38174
39113
40051
40990
41928
42867
43806
44744
45683
46621
47560
48498
49437
188
6728
7756
8785
9814
10945
12077
13208
14340
15471
16603
17735
18866
19998
21129
22261
23392
24524
25655
26787
27919
29050
30182
31313
32445
33576
34708
35839
36971
38103
39234
40366
41497
42629
43760
44892
46023
47155
48287
49418
50550
51681
52813
53944
55076
56207
57339
58471
59602
226
“P” =6.692
“Q” = 11.593
“R” = 16.798
9895
11408
12921
14434
16098
17762
19426
21091
22755
24419
26083
27748
29412
31076
32740
34405
36069
37733
39397
41062
42726
44390
46055
47719
49383
51047
52712
54376
56040
57704
59369
61033
62697
64361
66026
67690
69354
71018
72683
74347
76011
77675
79340
81004
82668
84332
85997
87661
333
17141
19762
22383
25004
27887
30771
33654
36537
39420
42303
45186
48069
50952
53835
56719
59602
62485
65368
68251
71134
74017
76900
79783
82666
85550
88433
91316
94199
97082
99965
102848
105731
108614
111497
114381
117264
120147
123030
125913
128796
131679
134562
137445
140329
143212
146095
148978
151861
577
24820
28615
32410
36205
40379
44554
48729
52903
57078
61252
65427
69601
73776
77951
82125
86300
90474
94649
98823
102998
107173
111347
115522
119696
123871
128045
132220
136395
140569
144744
148918
153093
157267
161442
165617
169791
173966
178140
182315
186489
190664
194839
199013
203188
207362
211537
215711
219886
835
SPECIALTY
PRODUCTS
Set Pressure
(PSIG)
Notes:
“UV” Steam-ASME Section VIII Pressure Vessels
1) Ratings are 90% of actual capacity. 2) For Set Pressures over 250 PSIG, consult factory. 3) For other sizes, consult factory.
4) ASME Section I – Steam Boilers – pounds of saturated steam per hour @ 3% or 2 PSIG accumulation (whichever is greater).
5) ASME Section VIII – Pressure Vessels – pounds of saturated steam per hour @ 10 % or 3 PSIG accumulation (whichever is greater).
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
235
S P E C I A LT Y P R O D U C T S
WCIY Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Cast Iron Y-Type Strainers
Model
Sizes
WCIY
1/2”, 3/4”, 1”, 11/4”, 11/2”,
2”, 21/2”, 3”, 4”
NPT, Flanged
Cast Iron
Connections
Body Material
P R E S S U R E / T E M P E R AT U R E R AT I N G S
NPT
NPT
125#
125#
250#
250#
FLG
FLG
FLG
FLG
250
400
125
200
250
500
PSIG @ 406˚F
PSIG @ 150˚F
PSIG @ 450˚F
PSIG @ 150˚F
PSIG @ 450˚F
PSIG @ 150˚F
-
Steam
WOG
Steam
WOG
Steam
WOG
A
A
Note: WOG = Water, Oil or Gas.
FLOW
T Y P I C A L A P P L I C AT I O N S
B
The WCIY Y-Strainer is used to strain dirt
particles from fluid in pipelines and provide
inexpensive protection for costly pumps, meters,
valves, traps, turbines and compressors.
B
F E AT U R E S
• Machined seat assures perfect fit for screen
• Blowdown connection & easily removable
stainless steel cylindrical screens for easy
maintenance
• Durable cast iron body
SPECIALTY
PRODUCTS
I N S TA L L AT I O N
The strainer should be installed in the flow
direction as indicated on the body in either a
vertical down or horizontal pipeline. The strainer
must be accessible for periodic cleaning.
M AT E R I A L S
Body
Plug
Cover
*Screen
*Gasket
Cast Iron, A126 CLASS B
Cast Iron, A126 CLASS B
Cast Iron, A126 CLASS B
Stainless Steel
Blue Guard
DIMENSIONS & WEIGHTS –
inches / pounds
Size/
Connection
Model
A
B
Blowdown
NPT
Weight
(lbs)
Screen
Opening
1/2" NPT
WCIY-12-020S250
33/16
21/16
3/8
1.5
0.033
3/4” NPT
WCIY-13-020S250
33/4
27/16
3/8
2.5
0.033
1” NPT
WCIY-14-020S250
4
27/16
3/4
3
0.033
11/4”
NPT
WCIY-15-020S250
5
33/8
3/4
5.5
0.033
11/2” NPT
WCIY-16-020S250
53/4
37/8
1
8
0.033
11/2
2” NPT
WCIY-17-020S250
7
43/4
13
0.033
2” 125# FLG
WCIY-17-020F125
87/8
6
1/2
22
0.033
2” 250# FLG
WCIY-17-020F250
87/8
61/2
1/2
28
0.033
21/2” NPT
WCIY-18-045S250
91/4
57/8
11/2
22
0.045
21/2” 125# FLG
WCIY-18-045F125
103/4
8
1
35
0.045
21/2” 250# FLG
WCIY-18-045F250
111/4
7
1
38
0.045
30
0.045
43
0.045
3” NPT
WCIY-19-045S250
10
6
11/2
3” 125# FLG
WCIY-19-045F125
111/2
83/4
1
3” 250# FLG
WCIY-19-045F250
115/8
8
1
54
0.045
4” 125# FLG
WCIY-20-045F125
137/8
91/2
11/4
75
0.045
WCIY-20-045F250
141/2
103/4
1
110
0.125
4” 250# FLG
*Recommended spare parts.
236
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
WCSY/WSSY Series
Y-Type Strainers - Carbon Steel/Stainless Steel
Model
Sizes
Connections
Body Material
WCSY, WSSY
1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”
NPT, SW
Carbon Steel (WCSY)
Stainless Steel (WSSY)
P R E S S U R E / T E M P E R AT U R E R AT I N G S
Carbon Steel
NPT
Stainless Steel NPT
600 PSIG @ 839˚F
600 PSIG @ 1124˚F
T Y P I C A L A P P L I C AT I O N
The WCSY/WSSY Y-Strainers are used to strain dirt particles from
fluid in pipelines and provide inexpensive protection for costly
pumps, meters, valves, traps, turbines and compressors.
F E AT U R E S
• Machined seat assures perfect fit for screen
• Blowdown connection & easily removable stainless steel
cylindrical screens for easy maintenance
• Choice of carbon steel or stainless steel bodies
I N S TA L L AT I O N
The strainer should be installed in the flow direction as indicated
on the body in either a vertical down or horizontal pipeline. The
strainer must be accessible for periodic cleaning.
M AT E R I A L S
WCSY CARBON STEEL MODEL
Body
Carbon Steel, A216 GR WCB
Plug
Carbon Steel, A216 GR WCB
Cover
Carbon Steel, A216 GR WCB
Screen
Stainless Steel
Gasket
Blue Guard
WSSY STAINLESS STEEL MODEL
Body
Stainless Steel, A351 GR CF8M
Plug
Stainless Steel, A351 GR CF8M
Cover
Stainless Steel, A351 GR CF8M
Screen
Stainless Steel
Gasket
Blue Guard
HOW TO ORDER
Specify connection size and connection configuration
(NPT or SW) that will meet application requirements.
SPECIALTY
PRODUCTS
A
DIMENSIONS & WEIGHTS –
Size
NPT
A
1/2"
inches / pounds
B
Blowdown
NPT
Weight
(lbs)
Screen
Opening
3
27/16
1/4
2
0.033
3/4”
33/4
215/16
3/8
3
0.033
1”
45/8
33/4
3/8
5
0.033
11/4”
5
4
3/4
7
0.033
11/2”
55/8
413/16
3/4
10
0.033
2”
7
61/8
1
15
0.045
FLOW
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
B
237
S P E C I A LT Y P R O D U C T S
Suction/Mixing Tee
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Cast Iron, Bronze or Stainless Steel
Model
Sizes
Connections
Body Material
Suction Tee
1/2”, 3/4”, 1”, 11/4”, 11/2”,
2”, 21/2”, 3”
NPT
Cast Iron
125# & 250#
Bronze
250#
Stainless Steel 300#
P R E S S U R E / T E M P E R AT U R E R AT I N G S
Cast Iron
NPT 250 PSIG @ 406˚F
Bronze
NPT 300 PSIG @ 422˚F
Stainless Steel NPT 450 PSIG @ 400˚F
T Y P I C A L A P P L I C AT I O N S
F E AT U R E S
The Watson McDaniel Cast Iron, Bronze or Stainless Steel
Suction Tee is a specialized type of pipe fitting used for
blending, agitation, recirculation, mixing, aeration and heating.
• Available in cast iron, bronze or stainless steel
• No moving parts
• Quiet operation
• Replaces mixing pumps, propellers & other
HOW IT WORKS
SPECIALTY
PRODUCTS
Heating by Direct Steam Injection: When using a Suction Tee
for heating by direct steam injection, the Suction Tee must be
completely submerged in the liquid being heated. When steam
enters the primary inlet side of the Suction Tee, a low pressure
condition is created inside the Suction Tee body. This causes the
liquid inside the tank to circulate through the suction tee and
intermix with the steam causing the liquid to be heated.
Mixing: When liquid is pumped through the primary inlet of a
Suction Tee, a low pressure region is created inside the Suction
Tee body. When a Suction Tee is submerged, the liquid inside the
tank will circulate through the secondary inlet of the Suction Tee
causing a mixing action to occur. An alternate method when
mixing two different liquids is to pump one liquid through the
primary inlet and the other liquid through the secondary inlet
of the Suction Tee.
Aeration: A tank or reservoir of liquid can be aerated by
connecting the secondary inlet of the Suction Tee to an air
or gas line under pressure while pumping liquid through the
primary inlet.
238
mechanical devices
I N S TA L L AT I O N
Installation should include a strainer and isolation valves for
maintenance purposes.
MAINTENANCE
Watson McDaniel Suction Tee will operate for extended
periods of time and requires no maintenance.
M AT E R I A L S
CAST IRON MODEL
Body
Plug
BRONZE MODEL
Body
Plug
STAINLESS STEEL MODEL
Body
Plug
Cast Iron, A126 CLASS 30
Cast Iron, A126 CLASS 30
Bronze, ASTM B-62
Brass
Stainless Steel, A351 GR CF8M
Stainless Steel, A351 GR 316
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
Suction/Mixing Tee
Cast Iron, Bronze or Stainless Steel
DIMENSIONS & WEIGHTS –
Pipe
Size
A
B
C
D
SECONDARY
INLET
inches / pounds
Weight
(lbs)
E
B
125# Cast Iron Body & Bronze 250#
1/2”
33/4
11/2
21/4
13/4
1/4
1.5
3/4”
5
17/8
31/8
31/8
3/8
3.25
1”
55/8
23/16
37/16
21/2
5/8
4
11/4”
53/4
21/4
31/2
21/2
11/16
4.75
11/2”
61/16
27/16
35/8
27/8
7/8
5.50
2”
7
27/8
41/8
3
15/16
7
21/2”
83/8
31/2
47/8
35/16
1
11.75
3”
91/2
41/8
53/8
37/8
15/16
20.50
D
E
PRIMARY
INLET
250# Cast Iron Body & Stainless Steel 300#
1”
61/16
25/16
33/4
211/16
11/16
6.75
11/4”
63/16
23/8
313/16
213/16
11/16
8
11/2”
61/2
213/16
311/16
27/8
7/8
10.50
2”
73/8
31/16
45/16
31/4
15/16
16.50
C A PA C I T I E S –
C
OUTLET
A
Steam (lbs/hr)
Supply Pressure (PSIG)
45
50
55
Size
5
10
15
20
25
30
35
40
1/2”
66
96
114
135
156
165
174
207
240
258
276
60
65
75
85
100
125
150
294
312
354
396
456
552
630
3/4”
108
138
168
198
228
255
282
309
336
363
390
402
414
504
564
648
792
936
1”
312
390
468
549
630
711
792
882
972
1026
1080
1170
1260
1428
1584
1800
2232
2556
11/4”
444
558
672
783
894
1005
1116
1230
1344
1461
1578
1689
1800
2010
2232
2592
3168
3708
11/2”
612
756
900
1026
1152
1332
1512
1674
1836
1980
2124
2286
2448
2772
3060
3528
4320
5040
2”
798
1008
1206
1410
1614
1815
2016
2214
2412
2610
2808
3024
3240
3636
3996
4680
5652
6696
21/2”
912
1152
1368
1584
1800
2052
2304
2538
2772
2997
3222
3447
3672
4140
4608
5292
6480
7560
3”
1332
1656
1980
2304
2628
2970
3312
3636
3960
4302
4644
4986
5328
5976
6600
7620
9300
10800
LIQUID
STEAM
SUPPLY
OPEN TANK
TEMPERATURE
REGULATOR
AIR OR
GAS SUPPLY
TEMP.
TEMP.
PROBE
SUCTION
TEE
Controlling temperature of large open tank by steam injection
SUCTION
TEE
Aeration or Agitation
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
SPECIALTY
PRODUCTS
A P P L I C AT I O N S
239
S P E C I A LT Y P R O D U C T S
Ejectors
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Syphons, Eductors, Exhausters & Injectors
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
W-EJECT, W-ELL, W-LM
1/2” – 2”
NPT
Bronze (1/2” - 11/2”)
Cast Iron (2”)
100 PSIG
130ºF
250 PSIG up to 450ºF
450ºF @ 250 PSIG
W-ELL & W-LM
Note: Minimum Operating Pressure for W-ELL & W-LM is 20 PSIG.
T Y P I C A L A P P L I C AT I O N S
Watson McDaniel Ejectors perform a variety of functions
depending on the application and motive fluid (steam or
water) used. See performance charts on the following pages.
Applications include: exhausting, agitating, aerating, circulating,
pumping and mixing.
W-EJECT
HOW IT WORKS
SPECIALTY
PRODUCTS
Using water, steam or air pressure as the motive force,
ejectors operate on the principle that a high velocity flow
through a nozzle will create a pressure drop in the area
around the nozzle discharge. The resulting vacuum will
induce flow into the secondary inlet of the ejector.
F E AT U R E S
I N S TA L L AT I O N
• No moving parts
• Can be used with water or steam pressure
• Submersible
• Available in cast iron or bronze
See installation examples on following page.
M AT E R I A L S
S A M P L E S P E C I F I C AT I O N
Body (1/2” - 11/2”)
Body (2”)
Nozzles (all sizes)
Ejectors shall be constructed from bronze or cast iron. Units shall
be capable of using steam, water or air as a motive force.
Note: W-ELL & W-LM for liquid motive service only.
240
Bronze
Cast Iron
Bronze
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
Ejectors
Syphons, Eductors, Exhausters & Injectors
W-EJECT
DIMENSIONS –
Size
A
inches
Connection Sizes *
S. Inlet Discharge P. Inlet
Dimensions
B
C
A
D
PRIMARY
(P.) INLET
DISCHARGE
Bronze Body & Nozzles
1/2”
1/2
1/2
1/4
31/4
17/16
113/16
11/8
21/2
13/8
3/4”
3/4
3/4
3/8
4
11/2
1”
1
1
1/2
51/8
21/4
27/8
15/8
11/4”
11/4
11/4
3/4
57/8
27/16
37/16
113/16
11/2”
11/2
11/2
3/4
61/4
211/16
39/16
115/16
FLOW
D
2”
2
2
C
B
Cast Iron Body with Bronze Nozzles
1
71/4
31/8
41/8
23/8
SECONDARY
(S.) INLET (suction)
* Connections are female NPT.
W-ELL / W-LM
A
NPT
Bronze Body & Nozzles
DIMENSIONS –
PRIMARY
(P.) INLET
inches
Connection Sizes **
Size
S. Inlet
Discharge P. Inlet
3/4”
3/4
3/4
1”
1
11/4”
11/4
DISCHARGE
Dimensions
A
B
D
1/2
513/16
2
13/8
1
3/4
71/8
25/16
13/4
11/4
1
9
27/16
21/8
D
NPT
NPT
B
SECONDARY
(S.) INLET (suction)
** Connections are male NPT.
Ejectors shown Pumping Liquid
INLET WATER
OR STEAM
EJECTOR
DISCHARGE
HEAD
TOTAL
HEAD
SPECIALTY
PRODUCTS
EJECTOR
25 FT.
MAXIMUM
LIFT
INLET WATER
OR STEAM
SUCTION
HEAD
It is always desirable to keep the Ejector as close to the actual liquid
being pumped as possible. The maximum height the liquid can
be pumped depends on the pressure of the “motive” liquid or steam
available. Please refer to the capacity graphs for maximum flow
rates and maximum achievable heads.
The maximum height that water or any liquid with a specific gravity
of 1 can be lifted is 25 feet. Increases in the temperature of the liquid
being lifted will cause this maximum height to decrease. Pumping
liquids in excess of 130°F is not recommended. Please consult
factory with any specific application.
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www.watsonmcdaniel.com
241
S P E C I A LT Y P R O D U C T S
Ejector Sizing
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Example 1
Example 2
A #14 1” Ejector using 60 lbs. of water pressure as a
motive force will pump water to a maximum height of
40 ft. When pumping water to a height of 20 ft. using
60 lbs. of water pressure, the amount of water being
pumped is 700 gal/hr.
A #14 1” Ejector using 60 lbs. of steam pressure as a
motive force will pump water to a maximum height of
60 ft. When pumping water to a height of 53 ft. using
60 lbs. of steam pressure, the amount of water being
pumped is 650 gal/hr.
#12 (1/2") Water Ejector
#12 (1/2") Steam Ejector
500
150
Flow (gal/hr)
Flow (gal/hr)
400
300
200
100
100
50
0
0
0
20
40
60
Total Head (Ft - H2O)
80
0
#13 (3/4") Water Ejector
20
40
60
80
Total Head (Ft - H2O)
100
120
100
120
100
120
#13 (3/4") Steam Ejector
1750
Flow (gal/hr)
Flow (gal/hr)
1400
1050
700
400
300
350
0
0
0
SPECIALTY
PRODUCTS
0
20
40
60
Total Head (Ft - H2O)
80
#14 (1") Water Ejector
20
40
60
80
Total Head (Ft - H2O)
#14 (1") Steam Ejector
2500
Flow (gal/hr)
Flow (gal/hr)
2000
1500
1000
700
600
500
0
0
242
20
40
60
Total Head (Ft - H2O)
80
0
0
20
40
60
80
Total Head (Ft - H2O)
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
Ejector Sizing
4000
#15 (11/4") Water Ejector
#15 (11/4") Steam Ejector
Flow (gal/hr)
Flow (gal/hr)
3200
2400
1600
1100
1000
800
0
0
5000
20
40
60
Total Head (Ft - H2O)
0
0
80
#16 (11/2") Water Ejector
20
40
60
80
Total Head (Ft - H2O)
100
120
100
120
100
120
#16 (11/2") Steam Ejector
Flow (gal/hr)
Flow (gal/hr)
4000
3000
2000
2000
1000
1000
0
0
20
40
60
Total Head (Ft - H2O)
0
0
80
#17 (2") Water Ejector
20
40
60
80
Total Head (Ft - H2O)
#17 (2") Steam Ejector
10000
Flow (gal/hr)
6000
4000
SPECIALTY
PRODUCTS
Flow (gal/hr)
8000
3000
2000
2000
0
0
20
40
60
Total Head (Ft - H2O)
80
0
0
20
40
60
80
Total Head (Ft - H2O)
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243
S P E C I A LT Y P R O D U C T S
AV813W
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Air Eliminator
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
AV813W
3/4”
NPT
Cast Iron
150 PSIG
300ºF
150 PSIG up to 350˚F
353ºF @ 150 PSIG
T Y P I C A L A P P L I C AT I O N S
The AV813W Air Eliminator is used for the removal of air and
other gases from vessels or piping systems without allowing the
contained liquid to escape.
HOW IT WORKS
The valve and seat assembly inside the air eliminator is
connected to a stainless steel float. When there is no liquid
in the body of the air eliminator, the float will be in the down
position allowing air or other gases in the vessel or piping
system to escape. When liquid enters the body, it will lift the float
and the valve will be closed off before any liquid can escape.
F E AT U R E S
• Rugged cast iron housing
• Simple design for easy maintenance
• Stainless steel internals
• Optional Viton Valve Head for high temperatures &
M AT E R I A L S
Cover
Body
Gasket
Seat Yoke
Valve Seat
Pivot Pin
Valve Head
Lever
Float
Washer
Screw & Washer
Cast Iron, ASTM A-126, Class B
Cast Iron, ASTM A-126, Class B
Grafoil
Stainless Steel, Type 304
Stainless Steel, Type 304
Stainless Steel, Type 304
EPDM (Viton optional)
Stainless Steel, Type 304
Stainless Steel, Type 304
Stainless Steel, Type 304
Stainless Steel, Type 304
DIMENSIONS –
inches
tight shut-off
S A M P L E S P E C I F I C AT I O N
Air Eliminator shall be of cast iron construction with stainless
steel internals and soft EPDM seat for tight shut-off. Optional Viton
seat is available for elevated temperatures and tight shut-off.
4.0
SPECIALTY
PRODUCTS
I N S TA L L AT I O N & M A I N T E N A N C E
The AV813W should be located at a high point in the system
or vessel. The unit must be installed level and upright with flow
upward for the float mechanism to operate properly. Isolation
valves should be installed for ease of maintenance.
6.9
41/2
3/8” NPT
CAPACITIES
5.8
51/4
SCFM
4.8
3.7
2.7
1.6
0.0
0
25
50
75
Pressure (PSIG)
100
125
150
3/4” NPT
FLOW
244
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
AE1800/1800R Series
Air Eliminator
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
AE1800, AE1800R
1/2”, 3/4”
NPT
Stainless Steel
400 PSIG
500ºF
400 PSIG up to 500ºF
500ºF @ 400 PSIG
AE1800
T Y P I C A L A P P L I C AT I O N
AE1800R
(Non-Repairable)
The AE1800 Air Eliminator is used for the removal of air and
other gases from vessels or piping systems without allowing the
contained liquid to escape.
(Repairable)
M AT E R I A L S
Body & Shell
Float Assembly
Valve & Lever Assembly
Seat
Washer, Seat
*Gasket
*Bolt, Hex, HD
*Nut
HOW IT WORKS
The valve and seat assembly inside the air eliminator is
connected to a stainless steel float. When there is no liquid
in the body of the air eliminator, the float will be in the down
position allowing air or other gases in the vessel or piping system
to escape. When liquid enters the body, it will lift the float and
the valve will be closed off before any liquid can escape.
F E AT U R E S
*
Stainless Steel, AISI 304
Stainless Steel, AISI 304
Hardened Stainless Steel, 55 Rc
Stainless Steel, AISI 420
302 SS
Grafoil
Stainless Steel, AISI 316
Stainless Steel, 18-8
AE1800R Repairable models only.
• All stainless steel body & internals
• Hardened SST seat (55 Rc) for longer service life
• Repairable units available (AE1800R Series)
2 5 /8
4.0
I N S TA L L AT I O N & M A I N T E N A N C E
The AE1800 should be located at a high point in the system
or vessel. The unit must be installed level and upright with flow
upward for the float mechanism to operate properly. Isolation
valves should be installed for ease of maintenance.
DIMENSIONS –
.078”
Size
(Inlet x Outlet)
AE1821
AE1831
AE1811R
AE1821R
AE1831R
AE1812
AE1822
AE1832
AE1812R
AE1822R
AE1813
AE1823
AE1813R
AE1823R
AE1833R
Series
Height
A
Weight
(lbs)
7.5
4
7.9
5
7.5
4
AE1832R
7.9
5
AE1833
7.5
4
7.9
5
3/4” x 1/2”
3/4” x 3/4”
1/2” x 1/2”
SPECIALTY
PRODUCTS
AE1811
Orifice PMO*
Size (PSIG)
A
inches / pounds
Model & Orifice Size
.101”
.125”
C A PA C I T I E S –
A
FLOW
FLOW
AE1800
(Non-Repairable)
AE1800R
(Repairable)
Air (SCFM)
5
7
9
12
15
20
25
30
40
Inlet Pressure (PSIG)
50
60
70
80
90
100
110
120
125
150
180
265
300
6.0
6.8
7.2
7.5
7.9
9.4
11.2
16.3
18.4 24.4
4.2
5.4
400
AE1810 .078”
400
1.0
1.1
1.3
1.5
1.7
1.9
2.2
2.5
3.1
3.4
3.7
AE1820 .101”
265
1.7
1.9
2.1
2.4
2.6
3.1
3.5
4.0
4.8
5.3
5.7
6.6
8.4
9.3
10.2
11.1
12
12.4
14.5
17.3
24.8
-
-
AE1830 .125”
180
2.5
3.0
3.4
3.9
4.3
5.1
5.8
6.5
8.0
8.7
9.5
10.9
13.9
15.4
16.9
18.4
19.9
20.5
24.4
29.6
-
-
-
Note: Specify Model Number when ordering. Example: AE1812R (.078” Orifice, 3/4” x 3/4”, 400 PSIG max, Repairable unit)
* PMO based on liquids with specific gravity of 1. Consult factory for PMO for liquids of other specific gravity values.
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245
S P E C I A LT Y P R O D U C T S
AV2000C
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Thermostatic Air Vent
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
AV2000C
1/2”, 3/4”
NPT
Stainless Steel
650 PSIG
Saturated Steam Temp.
1032 PSIG @ 100˚F
750ºF @ 800 PSIG
T Y P I C A L A P P L I C AT I O N S
M AT E R I A L S
The AV2000C is used on industrial steam applications up to
650 PSIG for the removal of air and non-condensable gases
from process equipment, vessels and piping.
HOW IT WORKS
Housing
Thermal Element
Valve & Seat
Strainer Screen .033” perf.
Stainless Steel, ASTM A351-CF3
Stainless Steel
Hardened Stainless Steel, 40 Rc
Stainless Steel
The thermostatic air vent contains a welded stainless steel
thermal element that expands when heated and contracts when
cooled. When air and non-condensable gases are present, the
valve is in the open discharge position. When steam reaches the
air vent, the element expands and closes the valve off tightly.
Specify model, pipe size and orifice size. If orifice size is not
specified, the standard 5/16” diameter will be used.
HOW TO ORDER
F E AT U R E S
DIMENSIONS –
• Welded stainless steel thermal element
• Hardened stainless steel seat and valve plugs for extended
inches
service life
• Integral strainer to protect from contamination
• Steam pressures up to 650 PSIG
• Special Subcool Options Available
17/8
15/16
Vent
S A M P L E S P E C I F I C AT I O N
SPECIALTY
PRODUCTS
Air Vent shall have a thermal element operation with a seal-welded
tamper-proof stainless steel construction. All internals shall be
stainless steel, featuring an integral strainer and hardened
seating system.
37/8
I N S TA L L AT I O N
The air vent should be located at a high point in the system
or vessel. The air vent can be installed in any orientation.
An isolation valve should be installed to facilitate removal and
replacement without system shut-down. Unit is seal-welded
and non-repairable.
FLOW
C A PA C I T I E S –
Model
Orifice PMO
Size (PSIG)
2
A i r (SCFM)
5
10
25
50
100
125
150
Inlet Pressure (PSIG)
200
250
300
350
400
450
500
550
600
650
AV2001C 3/16”
650
5.2
6.2
7.7
12.4
20.2
35.9
43.9
51.5
67.2
82.8
98.5
114
130
145
161
177
192
208
AV2003C 5/16”
650
10.7
12.6
15.8
25.4
41.4
73.3
89.4
105
137
169
201
233
265
297
329
361
393
425
246
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
AVT125
Thermostatic Air Vent
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
AVT125
1/2”, 3/4”
NPT
Forged Brass
125 PSIG
353ºF
125 PSIG up to 450ºF
450ºF @ 125 PSIG
T Y P I C A L A P P L I C AT I O N S
The AVT125 is used on steam applications up to 125 PSIG
for removal of air and non-condensable gases from process
equipment, vessels and piping.
HOW IT WORKS
The thermostatic air vent contains a welded stainless steel
thermal element that expands when heated and contracts when
cooled. When air and non-condensable gases are present, the
valve is in the open discharge position. When steam reaches the
air vent, the element expands and closes the valve off tightly.
M AT E R I A L S
Body & Cover
Element
Spring
Seat
Gasket
Union Nipple
Union Nut
Forged Brass, CA 377
Welded Stainless Steel, AISI 302
Stainless Steel, AISI 304
Stainless Steel, AISI 303
Brass, ASTM B-21
Brass, ASTM B-16
Brass, ASTM B-16
C A PA C I T I E S –
F E AT U R E S
• Simple design for easy maintenance
• All Stainless Steel Internals
• Thermal element is the only moving part
S A M P L E S P E C I F I C AT I O N
Air Vent shall have a stainless steel thermal element operation
with forged brass construction, featuring a union nipple inlet
connection. The valve and seat shall be stainless steel.
Inlet Pressure (PSIG)
25
50
Size
Size
5
10
1/2”
.25”
9
13
22
37
65
80
3/4”
.30”
12
16
27
46
82
100
DIMENSIONS & WEIGHTS –
100
125
inches / pounds
Size
A
B
C
D
Weight
1/2"
213/16
13/16
1
21/8
2.75
3/4"
31/16
13/16
1
21/8
2.75
The AVT125 should be located at a high point in the system
or vessel. The air vent can be installed in any orientation. An
isolation valve should be installed to facilitate repair without
system shut-down. Unit is in-line repairable. Repair kits are
available.
SPECIALTY
PRODUCTS
I N S TA L L AT I O N & M A I N T E N A N C E
Ai r (SCFM)
Orifice
D
C
FLOW
B
Vent
A
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
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247
S P E C I A LT Y P R O D U C T S
WDS Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Air/Steam Moisture Separator
Model
Body Material
Sizes
WDS
Cast Iron
3/4”, 1”, 11/4”,
11/2”, 2”, 21/2”,
3”, 4”
NPT, 125# Flanged
Connections
Carbon Steel
1”, 11/4”, 11/2”,
2”, 21/2”, 3”, 4”, 5”,
6”, 8”, 10”, 12”
NPT, SW, 150# &
300# Flanged
300 PSIG (NPT & SW)
PMO Max. Operating Pressure 250 PSIG
NPT:
250 PSIG @ 450˚F NPT, SW: 1000 PSIG @ 650˚F
Pressure/
Temperature Rating
125# FLG: 150 PSIG @ 450˚F 150# FLG: 150 PSIG @ 450˚F
300# FLG: 500 PSIG @ 650˚F
WDS
Carbon Steel
T Y P I C A L A P P L I C AT I O N S
The WDS Series Separators are used for the removal of
entrained liquid or solids from steam. Effective in applications
were the system has an entrained liquid flow rate of up to
40% by weight of the unit’s flow capacity.
WDS
Cast Iron
S A M P L E S P E C I F I C AT I O N
HOW IT WORKS
Steam Moisture Separator shall be “T” style for horizontal
piping installations. Separator to be code constructed in cast iron
or carbon steel and available in FNPT and flanged connections.
Moisture-laden steam enters the inlet of the separator where it
is deflected in a centrifugal downward motion. The entrained
moisture is separated out by reduction in velocity. Separated
liquid then falls below the Vortex Containment Plate where it
cannot be re-entrained. Dry, clean steam then flows upward
and exits through the outlet of the separator.
I N S TA L L AT I O N
The WDS Steam Moisture Separator must be installed in a
horizontal run of pipe. Exercise standard piping and structural
practices when installing this unit. Proper drainage of the
separator utilizing a float & thermostatic steam trap is
essential for proper operation.
F E AT U R E S
SPECIALTY
PRODUCTS
• High efficiency: 99% of all particles 10 microns and larger
• Minimum pressure drop
• Gauge ports on 3” & 4” cast iron units
• Standard gauge ports on 21/2”–12” carbon steel units
• ASME Code constructed
C A PA C I T I E S –
WDS Cast Iron Model
WDS Carbon Steel Model
All Parts Cast Iron
All Parts Fabricated Carbon Steel
Steam (lbs/hr)
Size
5
10
25
50
100
3/4”, 1"
11⁄4"
11⁄2"
2"
21⁄2"
3"
4"
5"
6"
8"
10"
12"
192
305
434
769
1220
1912
3183
4823
7465
12444
19376
28560
219
348
495
877
1391
2181
3632
5501
8516
14196
22104
32580
289
459
653
1156
1834
2876
4787
7252
11226
18713
29137
42947
384
609
868
1536
2437
3821
6362
9637
14917
24867
38720
57071
536
851
1211
2143
3401
5333
8878
13449
20818
34704
54036
79648
248
M AT E R I A L S
Operating Pressure (PSIG)
150
200
661
1050
1495
2646
4199
6583
10959
16603
25699
42840
66705
98320
250
300
400*
450*
500*
772
872
964
1132
1210
1284
1225
1384
1531
1797
1921
2038
1744
1970
2179
2559
2734
2902
3087
3487
3857
4529
4839
5136
4900
5535
6121
7188
7680
8151
7682
8677
9597
11269
12041
12779
12788
14446
15977
18760
20046
21274
19373
21884
24203
28420
30367
32229
29988
33874
37464
43992
47006
49887
49989
56468
62452
73334
78359
83161
77836
87924
97241
114186
122009
129487
114728
129597
143331
168306
179836
190859
* Not to be used for steam service at these pressures. For air service only.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
WDS Series
Air/Steam Moisture Separator
CAST IRON
WDS CAST IRON NPT MODEL DIMENSIONS –
Size
(NPT)
3/4”
A
51/2
B
101/8
1”
C
53/4
Vent
NPT
1/4
Drain
NPT
3/4
Gauge Centers
G
N/A
6
101/8
63/4
1/4
1
N/A
26
6
103/8
7
1/4
1
N/A
30
11/2”
71/4
131/8
81/8
1/4
1
N/A
45
2”
81/8
155/8
81/2
1/4
1
N/A
50
21/2”
12
181/4
113/8
1/4
11/4
N/A
95
3”
11
181/4
113/8
1/4
11/4
31/2
90
Size
(Flanged)
A
B
2”
101/2
3”
14
4”
157/8
Drain
NPT
A
(Flanged)
Weight
(lbs)
23
11/4”
WDS CAST IRON FLANGED MODEL DIMENSIONS –
CAST IRON WDS
inches / pounds
VENT
CONNECTION
1/4” NPT
A
(NPT)
OUT
IN
B
G
inches / pounds
C
Vent
NPT
Gauge Centers
G
Weight
(lbs)
133/4
81/2
1/4
1
N/A
50
16
113/8
1/4
11/4
43/4
95
193/8
14
1/4
11/4
53/4
195
1/2” NPT
WATER GAUGE
CONNECTION
C
DRAIN
CARBON STEEL
WDS CARBON STEEL MODEL DIMENSIONS –
Size
NPT & 150# &
SW
300# FLG
A
A
B
C
D
Gauge
Centers
G
CARBON STEEL WDS
inches / pounds
NPT Drain
Std.
Opt.
1
11/2
Weight (lbs)
NPT & 150#
300#
SW
FLG
FLG
63/8
101/2
101/2
12
59/16
Opt.
11/4”
63/8
101/2
101/2
12
59/16
Opt.
1
11/2
30
35
37
11/2”
75/8
111/2
121/2
14
65/8
Opt.
1
2
55
50
56
2”
77/8
111/2
121/2
14
65/8
Opt.
1
2
57
55
59
22
85/8
53/4
1
2
–
100
110
53/4
11/2
21/2
21/2”
–
16
15
29
33
3”
–
18
18
26
103/4
–
140
150
4”
–
20
22
31
123/4
53/4
11/2
21/2
–
195
220
5”
–
22
26
36
14
77/8
11/2
21/2
–
230
290
11/2
21/2
–
350
380
2
3
–
475
610
6”
–
24
30
41
16
77/8
8”
–
28
37
50
18
77/8
10”
–
34
55
70
24
77/8
2
3
–
780
1180
12”
–
38
58
75
28
77/8
21/2
4
–
940
1510
Note: 1” - 2” units are Cast Steel; 21/2” and up are Fabricated Steel.
VENT
CONNECTION
1/4” NPT
A
(NPT/SW)
35
OUT
IN
C
B
G
DRAIN
D
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
SPECIALTY
PRODUCTS
1”
A
(Flanged)
1/2” NPT
WATER GAUGE
CONNECTION
249
S P E C I A LT Y P R O D U C T S
WCIS Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Air/Steam Moisture Separator
Model
WCIS1
WCIS2
WCIS3
Sizes
3/4”, 1”
11/2”, 2”
2” to 4”
Connections
NPT
NPT
ANSI 125#
Body Material
Cast Iron
Cast Iron
PMO Max. Operating Pressure
200 PSIG
145 PSIG
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
388ºF
232 PSIG @ 0-248ºF
160 PSIG @ 572ºF
363ºF
232 PSIG @ 0-248ºF
188 PSIG @ 428ºF
TMA Max. Allowable Temperature
572ºF @ 160 PSIG
428ºF @ 0-188 PSIG
MODEL WCIS1
IN
OUT
MODEL WCIS2
MODEL WCIS3
OUT
IN
OUT
IN
T Y P I C A L A P P L I C AT I O N S
I N S TA L L AT I O N
• On steam mains, as a drip station ahead of steam pressure
reducing or temperature control valves
Install a horizontal pipeline with the drain directly below the line.
Recommended trap is a continuous draining float operated type.
• On the steam inlet to laundry presses and other process
equipment which require dry saturated steam
MAINTENANCE
• On the compressed air supply to sensitive instruments
and before filters
The trap at the separator drain should be serviced periodically
according to the manufacturer’s instructions. The separator itself
requires no maintenance.
SPECIALTY
PRODUCTS
HOW IT WORKS
When a vapor entrained with moisture enters the steam
separator, a series of baffles change its flow direction several
times. During the process, the baffles in the housing collect
impinged water droplets that are carried in the vapor. Gravity
causes the accumulated water droplets and other foreign
particles to fall to the drain and exit through an external trap.
This allows clean, dry vapor to exit at the outlet of the separator.
F E AT U R E S
• Extracts nearly all moisture and solids > 10 microns
• Optimal gravity discharge
• Long-lasting cast iron construction
M AT E R I A L S
WCIS1 Body & Cover
WCIS2/3 Body
WCIS1 Gasket
WCIS2/3 Gasket
Bolts
Bushing
Plug
Cast Iron ASTM A 126 GR CLB
Semi-rigid Graphite Laminate
Reinforced Exfoliated Graphite
Steel UNF, BS 1766 Gr 5
Malleable Iron
Malleable Iron
S A M P L E S P E C I F I C AT I O N
Moisture Separator shall be of the high efficiency impingement
type having a pressure drop that does not exceed an equivalent
length of pipe. Body shall be iron with threaded or flanged
connections. A threaded bottom drain shall be provided for
the installation of a trap to discharge any accumulated liquid.
250
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
WCIS Series
Air/Steam Moisture Separator
MODEL WCIS2
MODEL WCIS3
D
D
C
B
B
A
A
F
(NPT)
F
(NPT)
E (DRAIN NPT)
G
E (DRAIN NPT)
G
C
MODEL WCIS1
C
WCIS2 DIMENSIONS with threaded connections - in./mm
Size
A
B
11/2” 411/16 61/2
119 165
2”
515/16 81/4
150 210
C
D
E
F
G
Weight
31/2
89
12
304
1/2”
11/2”
–
23/8
60
24 lb
11 kg
11/2”
–
27/8
73
42.0 lb
19 kg
–
41/2 1511/16
115
398
1/2”
–
B
WCIS3 DIMENSIONS with flanged connections - in./mm
Size
A
A
B
C
D
E
F
G
Weight
53/8
137
81/8
207
413/16
122
18
457
1/2”
11/2”
–
33/4
94
67 lb
30.5 kg
21/2” 63/4
172
95/8
244
53/4 1515/16
147
404
–
11/2”
–
37/8
98
67 lb
30.5 kg
3”
63/4
172
10
254
61/8
155
191/16
484
1”
–
11/2”
–
37/8
98
86 lb
39 kg
4”
97/16 133/8 713/16 271/4
233 337 197
692
1”
–
11/2” 413/16
–
122
2”
–
3/4”
172 lb
78 kg
A
B
C
D
E
F
Weight
61/16
155
101/4
260
47/16
112
47/16
112
1/2”
11/2”
–
15 lb
7 kg
9
229
151/4
388
57/8
149
61/16
155
1/2”
2”
–
30 lb
14 kg
3/4”
1”
11/2”
2”
21/2”
3”
4”
31
51
123
206
288
370
643
40
51
82
190
437
623
803
1385
60
67
108
262
437
623
803
1385
80
87
138
334
556
793
1019
1756
100
102
169
406
674
957
1236
2132
–
–
Operating Pressure (PSIG)
145
148
245
587
968
1380
1776
3059
200
Size
5
10
194
322
3/4”
25
50
100
145
200
68
1”
110
11/2” 260
2”
429
21/2” 612
3”
946
4”
1630
82
133
317
523
746
1153
1985
128
208
494
814
1162
1795
3092
203
330
783
1292
1844
2848
4906
349
567
1347
3220
3168
4893
8427
496
804
1845
3041
4340
6702
11542
635
1030
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
SPECIALTY
PRODUCTS
Size
3/4”
Recommended Saturated Steam Capacities in lbs/hr
Recommended Air Capacities in SCFM
Operating Pressure (PSIG)
20
E (DRAIN NPT)
WCIS1 DIMENSIONS (nominal) - inches/mm
1”
Size
F
(NPT)
D
251
S P E C I A LT Y P R O D U C T S
WEH Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Exhaust Head
Model
WEHC
WEHF
WEHFSS
11/2”,
2”,
1”,
21/2”, 3”, 4”,
5”, 6”, 8”, 10”
Sizes
Connections
NPT, 125# Flanged
Body Material
Cast Iron
21/2”, 3”, 4”, 5”, 6”, 8”, 10”
150# Flanged
Carbon Steel
T Y P I C A L A P P L I C AT I O N S
The WEH Series Exhaust Heads are used to separate entrained
water and particles from steam prior to being discharged directly
to the atmosphere. Typically used to eliminate water damage to
rooftops and other equipment.
Stainless Steel
M AT E R I A L S
WEHC
WEHF
WEHFSS
All Parts Cast Iron
All Parts Fabricated Carbon Steel
All Parts Fabricated Stainless Steel
HOW IT WORKS
Exhaust heads use the cyclonic effect where the velocity of
the steam is used to generate centrifugal motion that whirls the
steam and throws the entrained water to the wall of the unit
where it is released to a drain below. Correct sizing of exhaust
heads for steam service is important in order to assure the
highest possible desiccation of the steam.
F E AT U R E S
• Up to 99% of particles 10 microns and larger are
separated from discharging steam
SPECIALTY
PRODUCTS
• Maximizes separation of water and steam
HOW TO ORDER
Refer to the capacity chart to determine which model is required
to satisfy the application requirements.
• Contains Vortex Containment Plate
Available sizes & connections:
S A M P L E S P E C I F I C AT I O N
Cast Iron
NPT - 1”, 11/2”, 2”, 21/2”, 3”, 4”
125# Flanged - 4”, 5”, 6”, 8”, 10”
Steam Exhaust Head shall be a cyclone design for vertical
venting to atmosphere. Unit shall have a vortex containment
plate feature to prevent re-entrainment of liquid. Exhaust Head
to be constructed in cast iron, carbon steel or stainless steel
and available in FNPT and flanged connections.
Carbon Steel & Stainless Steel
150# Flanged - 21/2”, 3”, 4”, 5”, 6”, 8”, 10”
I N S TA L L AT I O N
The WEH Steam Exhaust Head must be installed at the top
of a vertical vent pipe. Exercise standard piping and structural
practices when installing this unit. Proper drainage of the
exhaust head is essential for proper operation. Pipe the drain
connection of the exhaust head to a roof gutter or down spout.
252
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
WEH Series
Exhaust Head
WEHC (Cast Iron)
A
WEHC DIMENSIONS
(inches),
WEIGHTS & CAPACITIES
Size
Inlet
Connection
A
B
Drain
NPT
Weight
(lbs)
Capacity*
1”
NPT
51/4
61/8
1/2
11
160
11/2”
NPT
51/4
61/8
1/2
11
370
2” & 21/2”
NPT
71/2
87/8
3/4
25
1,000
3”
NPT
83/4
111/4
3/4
40
2,100
4”
NPT
10
117/8
1
50
2.700
4”
125# FLG
10
15
1
68
2,700
5”
125# FLG
13
14
11/2
90
4,000
6”
125# FLG
143/4
183/4
11/2
115
6,000
8”
125# FLG
18
20
2
190
10,500
FLOW
10”
125# FLG
23
24
2
335
16,000
A
B
DRAIN
NPT
NPT
* Capacity in pounds of exhaust steam per hour at atmospheric pressure of 14.7 PSIA.
B
DRAIN
NPT
FLANGE
FLOW
WEHF (Carbon Steel) & WEHFSS (Stainless Steel)
A
Inlet
Size
Drain
NPT
Weight
(lbs)
Inlet
Connection
A
B
21/2”
150# FLG
85/8
16
1
55
1,000
3”
150# FLG
103/4
19
11/2
65
1,600
4”
150# FLG
14
24
11/2
100
2,700
OUTLET
SPECIALTY
PRODUCTS
WEHF/SS DIMENSIONS (inches), WEIGHTS & CAPACITIES
Capacity*
5”
150# FLG
16
26
11/2
130
4,000
6”
150# FLG
18
30
11/2
140
6,000
8”
150# FLG
20
36
2
240
10,500
10”
150# FLG
24
42
2
390
16,000
B
* Capacity in pounds of exhaust steam per hour at atmospheric pressure of 14.7 PSIA.
FLANGE
FLOW
DRAIN
NPT
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253
S P E C I A LT Y P R O D U C T S
WVBSS
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Stainless Steel Vacuum Breaker
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
WVBSS
1/2”
NPT
Stainless Steel
300 PSIG
752ºF
300 PSIG up to 752ºF
752ºF @ 300 PSIG
T Y P I C A L A P P L I C AT I O N S
The WVBSS Vacuum Breaker is used on heat exchangers, air
coils, jacketed kettles, pressing machines, boiler feed water tanks,
sparge systems, water lines or anywhere else an unwanted
vacuum may occur. The WVBSS allows air to enter the steam
or liquid system in order to “break the vacuum” caused by the
condensing of steam or draining of liquid from a system. The
elimination of vacuum is necessary to allow proper drainage
of liquid from process systems.
M AT E R I A L S
Body
Ball
Nameplate
Stainless Steel, Series 300
Hardened Stainless Steel
Stainless Steel, Series 300
DIMENSIONS –
inches
HOW IT WORKS
The Vacuum Breaker functions like a simple check valve.
Outside air is allowed to enter the system through the air
inlet. However, when steam or water try to escape, the
vacuum breaker closes off tightly.
13/8
F E AT U R E S
• All stainless steel construction
• Small & compact
SPECIALTY
PRODUCTS
S A M P L E S P E C I F I C AT I O N
Vacuum Breakers shall be of all stainless steel construction with a
hardened stainless steel ball valve design.
17/8
Air
Inlet
1/8” NPT
13/8 Hex
System
Connection
1/2” NPT
FLOW
I N S TA L L AT I O N
Unit must be installed in a vertical position and should be placed
at the highest point in the system.
C A PA C I T I E S –
254
Size
NPT
2
4
1/2”
2.4
3.4
A i r (SCFM)
inches Hg Vacuum
6
8
4.0
4.3
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
10
12
4.7
4.9
S P E C I A LT Y P R O D U C T S
WSSCV Series
Stainless Steel Check Valves
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
PMA Max. Allowable Pressure
TMA Max. Allowable Temperature
Note:
WSSCV
1/2”, 3/4”, 1”, 11/4”, 11/2”, 2”, 3”
NPT, SW
316 Stainless Steel
500 PSIG
750˚F PSIG @ 100ºF
850˚F @ 420 PSIG
WSSCV is supplied with standard spring for 1/4 PSIG cracking pressure;
optional 5 PSIG cracking pressure spring is available upon request.
T Y P I C A L A P P L I C AT I O N S
The Model WSSCV is an all stainless steel in-line check valve
for steam, gas, or liquid service. It provides tight shut-off, minimizes
water hammer and also stops recycling of pumps by preventing
back flow of liquid. Used in the petrochemical, pulp & paper,
textile and food & beverage industries. The WSSCV all stainless
steel check valves will operate much longer and are less
problematic than bronze or cast iron check valves.
M AT E R I A L S
Body
Disc
Spring
F E AT U R E S & O P T I O N S
•
•
316 Stainless Steel Body and Internals
•
Available with optional 5 PSI cracking pressure
(must specify at time of order)
•
•
Available with NPT, SW, or optional Flanged connections
•
Body is seam welded to eliminate O-rings or gasket
seals which can be affected by high temperature steam
or hot condensate
•
Spring assisted closing of check valve to minimize
noise and wear
316 Stainless Steel
316 Stainless Steel
Inconel-X-750
Low cracking Pressure on spring (1/4 PSI) to minimize
resistance and maximize flow.
A
SEAM
WELDED
Spring made from Inconel-X-750 to handle extreme
temperature as well as corrosive applications
INLET
B
SPECIALTY
PRODUCTS
S A M P L E S P E C I F I C AT I O N
Check valve shall have a 316 stainless steel body and disc.
Spring shall be made from Inconel-X-750. Check valve body to
be seam welded together to eliminate need for O-ring or gasket.
NPT or
SOCKET
WELD
D I M E N S I O N S & S P E C I F I C AT I O N S
Size
MODEL
1/2”
WSSCV-12
A
B
Weight (lbs)
2.69
1.62
1.1
3.00
2.12
1.5
0.25
5.0
7
0.25
5.0
13
Standard Cracking Pressure*
Optional Cracking Pressure*
Cv
– inches/pounds
11/4”
WSSCV-15
11/2”
WSSCV-16
2”
WSSCV-17
3”
WSSCV-19
3.32
2.56
1.9
3.81
3.06
3.8
4.75
3.44
4.7
5.03
4.38
7.7
6.87
6.19
18.8
0.25
5.0
22
0.25
5.0
39
0.25
5.0
54
0.25
5.0
93
0.25
5.0
180
3/4”
1”
WSSCV-13 WSSCV-14
* Note: Pressure at which valve opens and flow occurs (PSI).
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
255
S P E C I A LT Y P R O D U C T S
WFPV
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Freeze Protection Valve
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
WFPV
1/2”
NPT
Stainless Steel
200 PSIG
300ºF
T Y P I C A L A P P L I C AT I O N S
The WFPV is used for freeze protection on pipes, valves,
fittings, pumps, condensate systems, safety showers, fire lines,
spray nozzles, freeze sensitive equipment or as backup protection
on steam tracing lines.
HOW IT WORKS
A thermostatic element senses water temperature in the valve.
If the temperature falls below 40ºF, the valve will modulate open
allowing water to drain from the system. The valve will remain
open as long as the water flowing by the sensing element is less
than 40ºF. When the water temperature rises above 40ºF, the
valve will close.
M AT E R I A L S
Body
O-Ring
Plug
Spring
Thermal Actuator
Stainless Steel, 303
EPDM
Brass, CDA-360
Stainless Steel, 302
Brass, CDA-360
DIMENSIONS & WEIGHTS –
inches / pounds
Size NPT
A
B
Weight (lbs)
1/2"
11/4
41/2
0.9
F E AT U R E S
• Corrosion resistant stainless steel body
• Long service life
• Narrow temperature band
• System pressures will not affect opening temperature
B
A
SPECIALTY
PRODUCTS
FLOW
S A M P L E S P E C I F I C AT I O N
The freeze protection valve shall have a stainless steel body
and actuated by a thermostatic element that senses water
temperature. The unit shall feature a ram-type plug for reliable
and tight shut-off.
I N S TA L L AT I O N
Unit should be installed in a vertical orientation with flow
direction downward. For full details, see Installation and
Maintenance Manual.
256
C A PA C I T I E S –
Water (lbs/hr)
Inlet Pressure
(PSIG)
Capacity
(lbs/hr)
50
2475
75
3031
100
3500
125
3913
150
4287
175
4630
200
4950
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www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
WSPV
Scald Protection Valve
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
WSPV
1/2”, 3/4”
NPT
Stainless Steel
200 PSIG
300ºF
T Y P I C A L A P P L I C AT I O N S
The WSPV is used to protect personnel from accidental
scalding by over-heated water or other liquids. Installations
such as eye-wash stations and safety showers can become
over-heated by piping exposed to solar radiation or a heat
exchanger malfunction
HOW IT WORKS
When water temperature rises above 95ºF, the thermal actuator
modulates the valve open. If the water exceeds 115ºF, the valve
will go to full open position in order to discharge the over-heated
water. When the water temperature returns to 95ºF, the thermal
actuator modulates the valve to close.
M AT E R I A L S
Body
Seat Seal
Plug
Spring
Thermal Actuator
Stainless Steel, 303
PTFE
Brass*, CDA-360
Stainless Steel, 302
Brass*, CDA-360
* All stainless steel version available. Consult Factory.
DIMENSIONS & WEIGHTS –
inches / pounds
Size NPT
A
B
Weight (lbs)
1/2"
11/4
41/2
0.9
3/4"
11/2
51/2
1.4
F E AT U R E S
• Corrosion resistant stainless steel body
• Long service life
• Narrow temperature band
• System pressures will not affect opening temperature
B
A
The scald protection valve shall have a stainless steel body
and actuated by a thermal element that senses water
temperature. The unit shall feature a ram-type plug for
reliable and tight shut-off.
I N S TA L L AT I O N
Unit should be installed in a vertical orientation with flow
direction downward. For full details, see Installation and
Maintenance Manual.
FLOW
C A PA C I T I E S –
SPECIALTY
PRODUCTS
S A M P L E S P E C I F I C AT I O N
Water (lbs/hr)
Inlet Pressure
(PSIG)
1/2”
Capacity (lbs/hr)
3/4”
50
5,300
7,070
75
6,495
8,660
100
7,500
10,000
125
8,385
11,180
150
9,180
12,240
200
10,600
14,140
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257
S P E C I A LT Y P R O D U C T S
WDPL Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Drip Pan Elbow
Model
WDPL
Sizes
3/4” through 8”
Connections
NPT, Flanged
Body Material
Cast Iron
PMO
250 PSIG
Max. Operating Pressure
WDPL
Flanged
T Y P I C A L A P P L I C AT I O N S
M AT E R I A L S
The WDPL Drip Pan Elbow is used to collect and remove
condensate. Typically used with steam boilers, pressure relief
valves, safety valves and steam pressure vessels and lines.
Body
Cast Iron
B
F E AT U R E S
• Collects discharge condensate from steam systems
• Returns condensate to safe areas
• Increases life of safety valves
• Reduces discharge piping strain
• Female NPT or Flanged connections available
A
PIPE SIZE
RISER
D
S A M P L E S P E C I F I C AT I O N
Drip Pan Elbow shall be made of cast iron and conform to the
Power Piping Code. It shall have a pan to collect condensate in
the steam riser pipe and a drain to pipe away the condensate.
E
INLET
G
NPT
HOW TO ORDER
SPECIALTY
PRODUCTS
Specify pipe size needed for application.
258
F
DRAIN
NPT
G
FLG
DIMENSIONS & WEIGHTS–
inches / pounds
Size
Connection
A
B
C
D
E
F
G
Weight
(lbs)
3/4”
NPT
11/2
33/4
13/4
23/4
11/32
1/4
11/2
2
1”
NPT
11/2
33/4
13/4
23/4
11/32
1/4
11/2
2
11/4”
NPT
2
51/2
215/32
41/8
17/16
3/8
21/8
5
215/32
41/8
17/16
5
11/2”
NPT
2
51/2
3/8
21/8
2”
NPT
3
61/4
23/8
35/8
15/8
1/2
21/4
6.5
21/2”
NPT
4
73/8
3
45/16
115/16
3/4
211/16
11
47/8
25/16
3/4
31/8
14
33/4
27
3”
NPT
4
8
31/2
4”
NPT
6
95/8
41/2
53/4
27/8
3/4
65/8
79/16
43/16
3/4
8
75
71/2
89/16
53/8
1
103/4
102
6”
125# FLG
8
123/4
8”
125# FLG
10
161/2
C
1/2”
MIN.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
S P E C I A LT Y P R O D U C T S
WFLV Series
Flash Recovery Vessel
Model
Sizes
Connections
Body Material
PMO Max. Operating Pressure
TMO Max. Operating Temperature
PMA Max. Allowable Pressure
WFLV
6”, 8”, 12”, 16”
150# RF
Carbon Steel
150 PSIG
366ºF
150 PSIG @ 562˚F
A
H
150#
FLANGE
OUTLET
F
G
Note: 250 PSIG unit available. Consult factory.
1/2”
NPT
J
NPT
E
T Y P I C A L A P P L I C AT I O N
C
The WFLV flash recovery vessels are installed in
condensate return systems in order to capture
and utilize the flash steam coming off of the hot
condensate. This flash steam is typically piped
away for use on low pressure steam processes.
INLET
B
H
150#
FLANGE
HOW TO SIZE/ORDER
Use Table 1 to determine amount of Flash Steam that will
be generated by the hot pressurized condensate. The
percentage of Flash Steam formed is found where
Condensate Pressure and Flash Tank Pressure intersect.
Multiply your Condensate Load by the decimal equivalent
of the Flash Steam Percent to determine the amount of
Flash Steam in lbs/hr. Then, use Figure 1 to determine
Flash Tank Size required:
L
NPT
D
Note: All Watson McDaniel flash recovery vessels are supplied with
ASME Section VIII Code Stamp.
Example: Condensate Pressure: 100 PSIG
Flash Tank Pressure: 20 PSIG
Condensate Load:
8,000 lbs/hr
% Flash Steam:
8.7% from chart
Decimal Equivalent % Flash Steam = .087
.087 x 8000 = 696 lbs/hr of flash steam
Ta b l e 1 – P E R C E N T ( % ) F L A S H S T E A M
Produced when condensate is discharged to atmosphere (0 PSIG) or into a
flash tank controlled at various pressures
Therefore Choose: 12” FLASH TANK
Figure 1 – Recovery Vessel Capacities
20,000
10,000
8,000
Size 12”
5,000
Size 8”
2,000
Size 6”
0
500
1000
2000
3000
0
5
5
10
15
20
30
40
60
80
100
125
150
200
250
300
350
400
1.6
2.9
3.9
4.9
6.5
7.8
10.0
11.8
13.3
14.9
16.3
18.7
20.8
22.5
24.1
25.6
0.0
1.3
2.4
3.3
5.0
6.3
8.5
10.3
11.8
13.5
14.9
17.3
19.4
21.2
22.8
24.2
Flash Tank Pressure (PSIG)
10
20
30
40
0.0
1.1
2.1
3.7
5.1
7.3
9.1
10.6
12.3
13.7
16.2
18.2
20.0
21.7
23.1
0.0
1.7
3.0
5.3
7.1
8.7
10.4
11.8
14.3
16.4
18.2
19.9
21.4
0.0
1.4
3.7
5.5
7.1
8.8
10.3
12.8
14.9
16.8
18.4
19.9
0.0
2.3
4.2
5.8
7.5
9.0
11.5
13.7
15.5
17.2
18.7
60
80
100
0.0
1.9
3.5
5.3
6.8
9.4
11.5
13.4
15.1
16.7
0.0
1.6
3.4
4.9
7.6
9.8
11.7
13.4
15.0
0.0
1.8
3.3
6.0
8.2
10.2
11.9
13.5
SPECIALTY
PRODUCTS
Condensate (lbs/hr)
Size 16”
Condensate
Pressure
(PSIG)
696
Flash Steam (lbs/hr)
DIMENSIONS & WEIGHTS –
inches/pounds
Size
A
B
C
D
E
F
G
H
J
L
Weight
(lbs)
6”
8”
12”
16”
65/8
85/8
123/4
16
47
48
491/2
58
381/2
393/4
411/4
50
12
13
21
24
8
81/2
113/4
133/8
9
91/2
111/2
121/2
251/2
255/8
26
32
21/2
4
5
6
3/4
3/4
11/2
2
11/2
2
3
3
75
150
165
215
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www.watsonmcdaniel.com
259
S P E C I A LT Y P R O D U C T S
WSTTV Series
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
Steam Trap Test Valves
Model
WSTTV
Sizes
1/2”, 3/4”, 1”
Connections
NPT (Consult Factory for Options)
Body Material
Pressure Ratings
Bronze or Stainless Steel
Bronze
150 PSIG WSP
Stainless Steel 150 PSIG WSP
WSP = Working Steam Pressure
T Y P I C A L A P P L I C AT I O N S
The WSTTV Steam Trap Test Valve offers simple, immediate,
and visible diagnosis of any steam trap. Turning a single handle
will instantly provide steam trap operational data.
HOW IT WORKS
With the WSTTV Steam Trap Test Valve installed downstream
of the trap and in the open position, steam trap discharges
normally. A quarter-turn of the handle repositions the specially
designed ball and diverts the trap discharge through a port on
the bottom of the valve. Discharge can then be observed and
assessments made regarding the operation of the steam trap.
F E AT U R E S ( Bronze)
• Full Port
• Cast heavy wall bronze bodies
• Standard locking stainless steel handles
SPECIALTY
PRODUCTS
F E AT U R E S ( Stainless Steel)
• Seal welded construction
• Full stainless steel construction
• Fully compliant with ASME B16.34 & API 608
• NACE MR-01-75 compliant
• Standard locking stainless steel handles
• Single reduced bore/full porting (depending on size)
I N S TA L L AT I O N
Test Valve to be mounted on the outlet side of any steam trap.
Care should be taken to ensure that the discharge port will be
positioned in such a manner so as to avoid danger to
personnel. NOT AN ISOLATION OR STOP VALVE.
MAINTENANCE
No maintenance required.
260
M AT E R I A L S ( Bronze)
Description
Body
Tailpiece
Ball
Stem
Packing Nut
Seats (2)
Packing
Thrust Washer
Handle Assembly
Handle Nut
150 lb. Rating
Bronze B584 C84400
Brass B124 C27700
ASTM A276 Gr. 316 SST
ASTM A276 Gr. 316 SST
Brass B16 C36000
R-TFM (Hostaflon)
25% Carbon-filled PTFE
R-TFM (Hostaflon)
300 Series SST
300 Series SST
M AT E R I A L S (Stainless Steel)
Description
Body
Tailpiece
Ball
Stem
Packing Nut
Seats (2)
Tailpiece Seal
Thrust Washer
Stem Packing
Lock Washer
Handle Nut
Handle Assembly
Nameplate
150 lb. Rating
CF8M
CF8M
ASTM A276 Gr. 316 SST
ASTM A276 Gr. 316 SST
ASTM A276 Gr. 316 SST
R-TFM (Hostaflon)
Graphite
R-TFM (Hostaflon)
Graphite
300 Series SST
300 Series SST
300 Series SST
300 Series SST
HOW TO ORDER
Specify size, pressure class and options, if applicable.
Additional options available; consult factory.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Engineering Data
TABLE OF CONTENTS
Page No.
Formulas, Conversions & Guidelines
•
•
•
•
•
•
•
Capacity Formulas for Steam Loads
Steam Trap Sizing & Selection Guidelines
Engineering Guidelines
Recommended Velocities & Pressure Drops for Various Services
Equivalents & Conversion Factors
Cv Formulas for Valve Sizing
Absolute & Kinematic Viscosity Units & Conversions
262
262
263
263
264
265
265
Steam Properties & Flow Characteristics
•
•
•
•
•
•
•
•
Properties of Saturated Steam
Draining Condensate from Steam Mains or Steam Supply Lines
Steam Capacity Tables
Steam Flow thru Various Orifice Diameters
Pressure Drop in Schedule 40 Pipe
Sizing Steam Pipes
Percent Flash Steam
Sizing of Condensate Return Line, Vent Line & Flash Tank
266
267
268
268
269
269-270
271
271-272
Fluid Flow in Piping
• Flow of Water thru Schedule 40 Steel Pipe – Flow Rates, Velocities & Pressure Drops
273
Pipe, Fitting & Flange Specifications
•
•
•
•
•
Pipe Data Table (for 1/8” thru 30” sizes)
Maximum Allowable Working Pressures for Seamless Carbon Steel Pipe
Flange Standards – Dimensional Data
Fitting Standards & Specifications
Standard Class Pressure-Temperature Ratings
274-276
277
278-279
280
281-283
Steam Trap Applications
•
•
•
•
•
•
•
•
Introduction to Steam Traps
Thermostatic & Bi-Metallic Steam Traps
Mechanical Steam Traps
Thermodynamic Steam Traps
Steam Trap Selection & Sizing
Drip Leg Design
Process Steam Trap – Gravity Drainage of Heat Transfer Equipment
Process Steam Trap – Syphon Drainage of Heat Transfer Equipment
284
285
286-287
288
289
290-291
292-293
294-295
Regulating Valve Applications
General Regulator Application & Installation Notes
Single Stage Pressure Reducing Station using Spring-Loaded Pilot
Single Stage Pressure Reducing Station using Air-Loaded Pilot for Remote Installations
Two-Stage (Series) Pressure Reducing Station
Parallel Pressure Reducing Station
Two-Stage Parallel Pressure Reducing Station
Temperature Control of a Heat Exchanger with Pressure Limiting
Automatic Temperature Control of a Batch Process with Electrical Time
Sequence Programmer (Solenoid Pilot)
• Temperature Control of a Semi-Instantaneous Heater using a Self-Contained
Temperature Regulating Valve
296-297
298-299
300-301
302-303
304-305
306-307
308-309
ENGINEERING
•
•
•
•
•
•
•
•
310-311
312-313
Pressure Motive Pump (PMP) Applications
•
•
•
•
Drainage of a Single Source of Condensate for a Closed Loop System
Drainage of Condensate from Below Grade for a Closed Loop System
Flash Steam Recovery
Removal of Water or Condensate from a Pit
314-315
316-317
318-319
320-321
261
FORMULAS, CONVERSIONS & GUIDELINES
C A PA C I T Y F O R M U L A S F O R S T E A M L O A D S
When BTU Load is Known
Capacity of
steam required
(lbs/hr)
When Square Feet Equivalent
Capacity of
Direct Radiation (EDR) is Known
steam required
(lbs/hr)
When Heating Water with Steam
Capacity of
steam required
(lbs/hr)
When Heating Fuel Oil with Steam Capacity of
steam required
(lbs/hr)
When Heating Air with Steam Coils Capacity of
steam required
(lbs/hr)
Boiler Output
Capacity of
steam required
(lbs/hr)
= BTU
1000
= Sq ft. of EDR
4
= GPM x Temp Rise °F
2
= GPM x Temp Rise °F
4
= CFM x Temp Rise °F
900
HEATING AIR WITH STEAM PIPE COILS
Steam (lbs/hr) = A x U x UT
L
A = Area of heating surface in sq. ft.
U = Heat transfer coefficient
(U = 2 for free convection)
6T = Steam Temperature – Air Temperature in (˚F)
L = Latent heat of Steam (BTU/lb) *
* Latent heat of Steam is 970 BTU/lb at 0 PSIG/212˚F.
= Boiler H.P. x 34.5
STEAM TRAP SIZING & SELECTION GUIDELINES
Drip Trap on Steam Mains:
• Should be sized for 2X safety factor at full differential pressure
• Primary choice for trap (up to 30 PSI): Float &Thermostatic
• Primary choice for trap (30-600 PSI): 1/2” WD600L Thermodynamic
3/4 WD600L Thermodynamic
• Place trap every 200 ft. depending on pressure and piping configuration.
Steam Tracing:
• Typically a trap is placed approximately every 100 ft.
• Primary choice for trap: 1/2” WT2000 Thermostatic
1/2” WT1000 Thermostatic
• Thermodynamic and Bucket traps are used on critical tracing applications
where no condensate can back up into the steam tracing lines
Process Applications:
For steam systems with constant pressure:
• 2X safety factor based on differential pressure
ENGINEERING
For steam systems with modulating pressure:
• When used to drain a heat exchanger being supplied by a modulating
control valve using up to 30 PSIG steam pressure, trap must handle full
load at 1/2 PSI differential pressure.
• When used to drain a heat exchanger being supplied by a modulating
control valve using steam pressure greater than 30 PSIG use 2.5X safety
factor at fulI differential pressure.
Primary choice for trap: Float & Thermostatic
262
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
FORMULAS, CONVERSIONS & GUIDELINES
ENGINEERING GUIDELINES
1. STEAM MAINS
A. Trap type & size:
1. Low Pressures – 0-30 PSI = 3/4” WFT Float & Thermostatic Trap
2. High Pressures – 30-600 PSI = 1/2” WD-600L Thermodynamic Trap
B. Distance between traps:
1. 500 ft. for supervised start up (where drain valves will be manually opened to drain condensate)
2. 200 ft. for automatic start up (where traps are solely relied upon for drainage of condensate)
C. Location of Trap:
1. At all low points
2. At each change in elevation
3. Before all control valves
4. Always put a trap at end of main
D. Size of Drip Leg for Drain Trap:
1. Drip Leg Diameter to be equal to steam main diameter for steam main sizes up to 4”
2. Drip Leg Diameter may be half the steam main diameter for steam main sizes over 4”, but not less than 4”
3. For systems with automatic start-up, Drip Leg Length to be 28” minimum (= 1 PSI minimum head pressure)
4. For systems with supervised start-up, Drip Leg Length to be 1.5 x Drip Leg Diameter, but not less than 8”
2. LIFTING CONDENSATE: Every 2.3 ft. of lift = 1 PSI
3. 1000 BTU = 1 lb. Steam or Condensate
4. 1 GPM = 500 lbs/hr liquid condensate
5. Effect of back pressure on steam trap capacity in % reduction in capacity:
% Back
Pressure
5
25
50
75
6
20
38
Inlet Pressure (PSI)
25
100
3
12
30
0
10
28
200
0
5
23
RECOMMENDED VELOCITIES & PRESSURE DROPS FOR VARIOUS SERVICES
SERVICE
VELOCITIES
PRESSURE DROPS
(per 100 ft.)
2,000
2,000
2,000
2,000
4,000
8,000
0.25 – 0.5 PSI
0.25 – 0.5 PSI
0.5 – 1.5 PSI
0.5 – 2.0 PSI
Saturated Steam
Vacuum
0 – 15 PSIG
15 – 100 PSIG
Over 100 PSIG
Steam Main, Low Noise (Hospital, Hotel, etc)
Steam Main, Industrial Plant
–
–
–
–
–
–
4,000 ft/min
5,000 ft/min
7,500 ft/min
9,000 ft/min
6,000 ft/min
12,000 ft/min
Superheated Steam
0–100 PSIG
100–500 PSIG
2,500 – 10,000 ft/min
2,500 – 12,000 ft/min
0.5 – 1.5 PSI
1.0 – 2.0 PSI
Condensate
1.5
1.5
3.0
4.0
–
–
–
–
2.5 ft/sec
3.0 ft/sec
7.5 ft/sec
10 ft/sec
4.0
1.0
5.0
5.0
ft/sec max for quiet flow
– 8.0 ft/sec
– 15.0 ft/sec
– 15.0 ft/sec
ENGINEERING
Boiler feed pump suction
Condensate pump suction
Condensate pump discharge
Boiler feed pump discharge
Hot Water
Heating Systems
Pump suction lines
Pump discharge lines
Cooling Water Systems
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
263
FORMULAS, CONVERSIONS & GUIDELINES
EQUIVALENTS & CONVERSION FACTORS
C
TO OBTAIN
A
MULTIPLY
B
BY
C
TO OBTAIN
14.697
Pounds per sq. in.
Inches of mercury
1.133
Feet of water
1.033
Kilograms per sq. cm
Inches of mercury
0.4912
Pounds per sq. in.
Atmospheres
29.92
Inches of mercury
Inches of mercury
0.0345
Kilograms per sq. cm
Atmospheres
760
Millimeters of mercury
Inches of water
0.03613
Pounds per sq. in.
Atmospheres
407
Inches of water
Inches of water
0.07355
Inches of mercury
Atmospheres
33.90
Feet of water
Kilograms
2.205
Pounds
Barrels (petroleum)
42
Gallons
Kilograms
0.001102
Short tons (2000 lbs.)
Barrels per day
0.0292
Gallons per minute
Kilograms per minute
132.3
Pounds per hour
Bars-G
14.5
Pounds per sq. in.
Kilograms per sq. cm
14.22
Pounds per sq. in.
Centimeters
0.3937
Inches
Kilograms per sq. cm
0.9678
Atmospheres
Centimeters
0.03281
Feet
Kilograms per sq. cm
28.96
Inches of mercury
Centimeters
0.01
Meters
Kilopascals
0.145
Pounds per sq. in.
Centimeters
0.01094
Yards
Liters
1000
Cubic centimeters
Cubic centimeters
0.06102
Cubic inches
Liters
0.2642
Gallons
Cubic feet
7.48055
Gallons
Liters per hour
0.0044
Gallons per minute
Feet
A
MULTIPLY
B
BY
Atmospheres
Atmospheres
Cubic feet
0.17812
Barrels
Meters
3.281
Cubic feet per second
448.833
Gallons per minute
Meters
1.0936
Yards
Cubic inches
16.39
Cubic centimeters
Meters
100
Centimeters
Cubic inches
0.004329
Gallons
Meters
39.37
Inches
Cubic meters
264.17
Gallons
Megapascals
145.0
Pounds per sq. in.
Cubic meters per hour
4.40
Gallons per minute
Pounds
0.0005
Short tons (2000 lbs.)
Feet
0.3048
Meters
Pounds
0.4536
Kilograms
Feet
0.3333
Yards
Pounds
0.000454
Metric Tons
Feet
30.48
Centimeters
Pounds
16
Ounces
Feet of water
0.882
Inches of mercury
Pounds per hour
6.32/M.W.
Cubic feet per minute
Feet of water
0.433
Pounds per sq. in.
Pounds per hour liquid
0.002/Sp. Gr.
Gallons (U.S.)
3785
Cubic centimeters
Gallons per minute
liquid (at 70°F)
Gallons (U.S.)
0.13368
Cubic feet
Pounds per sq. in.
27.684
Inches of water
Pounds per sq. in.
2.307
Feet of water
Pounds per sq. in.
2.036
Inches of mercury
Pounds per sq. in.
0.0703
Kilograms per sq. cm
Pounds per sq. in.
51.71
Millimeters of mercury
Pounds per sq. in.
0.7037
Meters of water
Specific Gravity
(of gas or vapors)
28.97
Molecular Wt.
(of gas or vapors)
Gallons (U.S.)
Gallons (Imperial)
277.4
Cubic inches
Cubic inches
Gallons (U.S.)
0.833
Gallons (Imperial)
Gallons (U.S.)
3.785
Liters
Gallons of water
ENGINEERING
231
8.328
Pounds (at 70°F)
Gallons of liquid
per minute
500 x Sp. Gr.
Pounds per hr
liquid (at 70°F)
Gallons per minute
0.002228
Cubic feet per second
Square centimeters
0.1550
Square inches
Square inches
6.452
Square centimeters
Horsepower (boiler)
34.5
Pounds water
per hr. evaporation
Tons (short ton 2000 lbs.)
907.2
Kilograms
Horsepower (boiler)
33479
Btu per hour
Tons (short ton 2000 lbs.)
0.9072
Metric Tons
91.8
Pounds per hour
Inches
2.54
Centimeters
Tons (metric) per day
Inches
0.0833
Feet
Water (cubic feet)
62.3
Pounds (at 70°F)
Inches
0.0254
Meters
Yards
0.9144
Meters
Inches
0.02778
Yards
Yards
91.44
Centimeters
This table may be used in two ways:
(1) Multiply the unit under column A by the figure under column B; the result is the unit under column C.
(2) Divide the unit under column C by the figure under column B; the result is the unit under column A.
264
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
FORMULAS, CONVERSIONS & GUIDELINES
Cv FORMULAS FOR VALVE SIZING
Cv = WATER CAPACITY in GPM with Pressure Drop of 1 PSI
The formulas for sizing regulating or control valves are based on Fluid Controls Institute Standard FCI 62-1.
The Cv number of a valve is its flow coefficient and is used to determine the maximum valve capacity (W, Q1 or Q)
for any condition, using the formulas below:
Cv = Valve Coefficient
6P = Pressure Drop [P1 - P2]
P1 = Inlet Pressure Absolute (PSIA)
P2 = Outlet Pressure Absolute (PSIA)
W = Saturated Steam Flow (lbs/hr)
STEAM
When 6P < 0.5 P1 :
W = 1.82 x Cv x P1
When 6P < 0.5 P1 :
Q1
962
WATER
Q = Cv
Steam Flow (W) when Pressure Drop
is greater than or equal to Critical
Pressure Drop (6P > 0.5 P1)
When 6P > 0.5 P1 :
6P ( P1 + P2 )
G1 x T
Q1 = 962 x Cv
W
1.82 x P1
Cv =
6P ( P1 + P2 )
2.1
Cv =
Flow in Gallons per Minute
Flow in Cubic Feet per Hour
Specific Gravity (Water = 1)
Specific Gravity Gas (Air = 1 @ 14.7 PSIA @ 60 ˚F)
Rankine Temperature of Flowing Medium ( ˚R = ˚F + 460)
W
Cv =
GAS
=
=
=
=
=
When 6P > 0.5 P1 :
6P ( P1 + P2 )
W = 2.1 x Cv x
Q
Q1
G
G1
T
G1 x T
6P ( P1 + P2 )
P1
Q1 = 833 x Cv x
G1 x T
Cv =
Q1
G1 x T
Gas Flow (Q1) when
Pressure Drop is greater
than or equal to Critical
Pressure Drop (6P > 0.5 P1)
833 x P1
(G = 1)
6P =
Cv
G
6P
Cv = Q
G
6P
= Q
1
6P
ABSOLUTE & KINEMATIC VISCOSITY UNITS & CONVERSIONS
Absolute Viscosity Units:
1 poise (P) = 1
dyn-s-cm-2
Kinematic Viscosity Units:
[cgs system]
1 centipoise (cP) = 10-2 P = 10-2 dyn-s-cm-2 [cgs system]
1 stoke (St) = 1 cm2/s [cgs system]
1 centistoke (cSt) = 10-2 St = 10-2 cm2/s [cgs system]
ENGINEERING
1 centipoise (cP) = 1 millipascal-second (mPas) [MKS system]
1 centipoise (cP) = 2.0877 x 10-5 lb-s-ft-2 [English system]
Relation between Absolute & Kinematic Viscosity:
Kinematic Viscosity (cSt) =
Absolute Viscosity (cP)
Specific Gravity of Fluid
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
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265
STEAM PROPERTIES & FLOW CHARACTERISTICS
Properties of Saturated Steam
Pressure Temp.
(°F)
Sensible
Heat (BTU/lb)
Latent
Total
Volume (ft3/lb)
Condensate
Steam
(Hg vac)
25
20
15
10
5
133
161
179
192
203
101
129
147
160
171
1018
1002
991
983
976
1119
1131
1138
1143
1147
0.01626
0.01640
0.01650
0.01659
0.01666
143.3
75.41
51.41
39.22
31.82
212
215
219
222
224
227
230
232
235
237
239
244
248
252
255
259
262
265
267
268
271
274
277
279
281
282
284
287
289
291
292
294
296
298
303
307
312
316
320
324
328
331
335
338
341
344
347
350
353
356
358
361
363
180
184
187
190
193
195
198
201
203
206
208
212
216
220
224
228
231
234
236
237
240
243
246
249
250
251
254
256
258
261
262
263
265
267
272
277
282
286
291
295
298
302
306
309
312
316
319
322
325
328
331
333
336
970
968
966
964
962
961
959
957
956
954
953
950
947
944
942
940
937
935
934
933
931
929
927
925
924
923
922
920
918
916
916
915
913
912
908
905
901
898
895
892
889
886
883
881
878
876
873
871
868
866
864
861
859
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1160
1162
1163
1165
1166
1167
1168
1169
1170
1170
1171
1172
1173
1174
1174
1174
1175
1176
1177
1177
1178
1178
1178
1179
1180
1182
1183
1184
1185
1186
1187
1188
1189
1190
1190
1191
1192
1192
1193
1194
1194
1195
1195
0.01672
0.01674
0.01676
0.01679
0.01681
0.01683
0.01685
0.01687
0.01689
0.01690
0.01692
0.01696
0.01699
0.01702
0.01705
0.01708
0.01711
0.01713
0.01715
0.01716
0.01719
0.01721
0.01723
0.01726
0.01727
0.01728
0.01730
0.01733
0.01735
0.01737
0.01738
0.01739
0.01741
0.01743
0.01748
0.01753
0.01757
0.01761
0.01766
0.01770
0.01774
0.01778
0.01782
0.01785
0.01789
0.01792
0.01796
0.01799
0.01803
0.01806
0.01809
0.01812
0.01815
26.80
25.21
23.79
22.53
21.40
20.38
19.46
18.62
17.85
17.14
16.49
15.33
14.33
13.45
12.68
11.99
11.38
10.83
10.57
10.33
9.874
9.459
9.078
8.728
8.563
8.404
8.104
7.826
7.566
7.323
7.208
7.096
6.883
6.683
6.230
5.837
5.491
5.184
4.911
4.665
4.444
4.242
4.059
3.891
3.736
3.594
3.462
3.340
3.226
3.119
3.020
2.927
2.839
ENGINEERING
(PSIG)
266
0
1
2
3
4
5
6
7
8
9
10
12
14
16
18
20
22
24
25
26
28
30
32
34
35
36
38
40
42
44
45
46
48
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
Pressure Temp.
(PSIG)
(°F)
150
155
160
165
170
175
180
185
190
195
200
205
210
215
220
225
230
235
240
245
250
255
260
265
270
275
280
285
290
295
300
310
320
330
340
350
360
370
380
390
400
450
500
550
600
650
700
750
800
900
1000
1250
1500
1750
2000
2250
2500
2750
3000
3194
366
368
371
373
375
377
380
382
384
386
388
390
392
394
395
397
399
401
403
404
406
408
409
411
413
414
416
417
419
420
422
425
428
430
433
436
438
441
443
446
448
460
470
480
489
497
505
513
520
534
546
574
598
618
637
654
669
683
696
706
Volume (ft3/lb)
Heat (BTU/lb)
Sensible
Latent
Total
Condensate
Steam
339
341
344
346
349
351
353
355
358
360
362
364
366
368
370
372
374
376
378
380
382
384
385
387
389
391
392
394
396
397
399
402
405
408
411
414
417
420
423
426
428
441
453
464
475
485
494
504
512
529
545
581
614
644
674
703
734
766
805
906
857
855
853
851
849
847
845
843
841
839
837
836
834
832
830
829
827
825
823
822
820
818
817
815
814
812
811
809
808
806
805
802
799
796
793
790
787
785
782
779
777
764
752
740
729
718
707
697
687
667
648
601
556
510
463
413
358
295
211
0
1196
1196
1196
1197
1197
1198
1198
1198
1199
1199
1199
1200
1200
1200
1200
1201
1201
1201
1201
1202
1202
1202
1202
1202
1203
1203
1203
1203
1203
1203
1203
1204
1204
1204
1204
1204
1204
1204
1205
1205
1205
1205
1205
1204
1203
1203
1202
1200
1199
1196
1192
1182
1169
1155
1137
1116
1092
1061
1016
906
0.01818
0.01821
0.01824
0.01827
0.01830
0.01833
0.01835
0.01839
0.01841
0.01844
0.01847
0.01850
0.01852
0.01855
0.01857
0.01860
0.01863
0.01865
0.01868
0.01870
0.01873
0.01875
0.01878
0.01880
0.01882
0.01885
0.01887
0.01889
0.01891
0.01894
0.01896
0.01901
0.01906
0.01910
0.01915
0.01919
0.01923
0.01927
0.01932
0.01936
0.01940
0.01961
0.01980
0.02000
0.02019
0.02038
0.02056
0.02074
0.02092
0.02128
0.02164
0.02256
0.02352
0.02456
0.02572
0.02707
0.02871
0.03097
0.03465
0.05078
2.756
2.678
2.605
2.535
2.469
2.407
2.347
2.291
2.237
2.185
2.136
2.089
2.044
2.001
1.960
1.920
1.882
1.845
1.810
1.776
1.744
1.712
1.682
1.652
1.624
1.596
1.570
1.544
1.520
1.497
1.473
1.428
1.386
1.346
1.309
1.273
1.240
1.207
1.177
1.148
1.120
0.9992
0.9010
0.8195
0.7509
0.6922
0.6415
0.5971
0.5580
0.4922
0.4390
0.3410
0.2740
0.2248
0.1864
0.1554
0.1293
0.1062
0.0835
0.0508
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM PROPERTIES & FLOW CHARACTERISTICS
DRAINING CONDENSATE FROM STEAM MAINS OR STEAM SUPPLY LINES
Charts Assume All Pipes are Insulated (with 80% efficiency)
Warm Up Loads in Pounds of Condensate per hour per 100 ft. of Steam Main
Outside Temperature at 70˚F. Based on Sch. 40 Pipe up to 250 PSI; Sch. 80 above 250 PSI; Sch. 120, 5” & Larger, above 800 PSI.
0˚F
Pipe Size
Steam
Correction
Pressure
Factor †
(PSIG)
2”
21/2”
3”
4”
5”
6”
8”
10”
12”
14”
16”
18”
20”
24”
0
5
10
20
40
60
80
100
125
150
175
200
250
300
400
500
600
800
1000
1200
1400
1600
1750
1800
6.2
6.9
7.5
8.4
9.9
11.0
12.0
12.8
13.7
14.5
15.3
16.0
17.2
25.0
27.8
30.2
32.7
38
45
52
62
71
78
80
9.7
11.0
11.8
13.4
15.8
17.5
19.0
20.3
21.7
23.0
24.2
25.3
27.3
38.3
43
46
50
58
64
72
79
87
94
97
12.8
14.4
15.5
17.5
20.6
22.9
24.9
26.6
28.4
30.0
31.7
33.1
35.8
51
57
62
67
77
86
96
106
117
126
129
18.2
20.4
22.0
24.9
90.3
32.6
35.3
37.8
40
43
45
47
51
75
83
91
98
113
126
140
155
171
184
189
24.6
27.7
29.9
33.8
39.7
44
48
51
55
58
61
64
69
104
116
126
136
203
227
253
280
309
333
341
31.9
35.9
38.8
44
52
57
62
67
71
75
79
83
89
143
159
173
187
274
305
340
376
415
448
459
48
48
58
66
78
86
93
100
107
113
119
125
134
217
241
262
284
455
508
566
626
692
746
764
68
77
83
93
110
122
132
142
152
160
169
177
191
322
358
389
421
670
748
833
922
1018
1098
1125
90
101
109
124
145
162
175
188
200
212
224
234
252
443
493
535
579
943
1052
1172
1297
1432
1544
1584
107
120
130
146
172
192
208
222
238
251
265
277
299
531
590
642
694
1132
1263
1407
1558
1720
1855
1902
140
157
169
191
225
250
271
290
310
328
347
362
390
682
759
825
893
1445
1612
1796
1988
2194
2367
2427
176
198
213
241
284
316
342
366
391
414
437
456
492
854
971
1033
1118
1835
2047
2280
2524
2786
3006
3082
207
233
251
284
334
372
403
431
461
487
514
537
579
1045
1163
1263
1367
2227
2485
2767
3064
3382
3648
3741
308
324
350
396
465
518
561
600
642
679
716
748
807
1182
1650
1793
1939
3227
3601
4010
4440
4901
5285
5420
1.5
1.44
1.41
1.37
1.32
1.29
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
1.18
1.17
1.16
1.16
1.15
1.14
1.13
1.13
1.13
1.13
Running Loads in Pounds of Condensate per hour per 100 ft. of Steam Main
Outside Temperature at 70˚F. Based on Sch. 40 Pipe up to 250 PSI; Sch. 80 above 250 PSI; Sch. 120, 5” & Larger, above 800 PSI.
Steam
0˚F
Pipe Size
Pressure
Correction
(PSIG)
Factor †
2”
21/2”
3”
4”
5”
6”
8”
10”
12”
14”
16”
18”
20”
24”
6
8
10
12
13
16
18
20
23
27
30
36
43
51
60
69
76
79
7
9
12
15
16
19
22
25
28
33
37
44
52
62
73
85
93
96
9
11
14
18
20
23
27
30
34
39
44
53
63
75
89
103
113
117
11
14
18
22
24
26
34
37
43
49
55
69
82
97
114
132
145
150
13
17
24
28
30
33
42
46
53
61
68
85
101
119
141
163
179
185
16
20
27
33
36
43
50
54
63
73
82
101
120
142
168
195
213
221
20
26
33
41
45
53
62
68
80
91
103
131
156
185
219
253
278
288
24
32
41
51
56
66
77
85
99
114
128
164
195
230
273
31
347
358
29
38
49
61
66
78
92
101
118
135
152
194
231
274
324
375
411
425
32
42
54
67
73
86
101
111
130
148
167
214
254
301
356
412
452
467
36
48
62
77
84
98
116
126
148
170
191
244
290
343
407
470
516
534
39
51
67
83
90
107
126
138
162
185
208
274
326
386
457
528
580
600
44
57
74
93
101
119
140
154
180
206
232
305
363
430
509
588
645
667
53
68
89
111
121
141
168
184
216
246
277
365
435
515
610
704
773
800
1.58
1.50
1.45
1.41
1.39
1.38
1.36
1.35
1.33
1.32
1.31
1.30
1.27
1.26
1.25
1.22
1.22
1.21
† For outdoor temperatures of 0˚F, multiply load value selected from table by correction factor shown.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
267
ENGINEERING
10
30
60
100
125
175
250
300
400
500
600
800
1000
1200
1400
1600
1750
1800
STEAM PROPERTIES & FLOW CHARACTERISTICS
STEAM CAPACITY TABLES
This chart provides a simple method for sizing steam pipes with velocities in the range of 7,000 to 10,000 ft/min.
(Example: a 1” pipe with 100 PSIG steam pressure has a flow rate of 672 lbs/hr at a velocity of 7250 ft/min.
S T E A M C A PA C I T Y – Flow in lbs/hr
7375
FULL-PORT VALVE or PIPE SIZE
2
21/2
3
31/2
VELOCITY (FPM)
7500 7625
7750
7875
8000
8250
8500
9000
9500
10000
3591
6018
8731
13700
18620
24360
39470
58730
107700
179200
267700
748 1223 2135
2932
4913
7128
11190
15200
19880
32230
47950
87910
146300
218500
664 1086 1895
2603
4361
6328
9931
13490
17650
28610
42560
78040
129800
194000
328
580
948 1655
2273
3810
5528
8675
11790
15420
24990
37180
68170
113400
169500
175
280
496
811 1415
1943
3256
4724
7414
10070
13180
21360
31780
58260
96940
144800
145
232
411
672 1173
1612
2701
3919
6150
8356
10930
17720
26360
48330
80410
120100
72
133
213
377
617 1076
1478
2477
3594
5641
7665
10030
16250
24180
44330
73760
110200
324
66
121
194
343
561
979
1345
2254
3270
5132
6973
9122
14780
22000
40330
67100
100300
316
59
109
175
309
505
881
1211
2029
2943
4619
6277
8211
13310
19800
36300
60400
90240
60
308
53
97
155
274
449
783
1076
1803
2616
4105
5577
7296
11820
17590
32260
53670
80190
50
298
46
85
136
240
392
684
940
1575
2286
3587
4874
6376
10330
15380
28190
46900
70080
40
287
39
72
116
205
335
585
803
1346
1953
3066
4166
5449
8831
13140
24090
40080
59890
30
274
33
60
96
170
278
485
666
1115
1618
2539
3451
4514
7315
10880
19960
33200
49610
25
267
29
54
86
152
249
434
596
999
1449
2274
3090
4042
6551
9747
17870
29730
44430
20
259
26
47
76
134
219
383
526
881
1279
2006
2726
3566
5780
8600
15770
26230
39200
15
250
22
41
66
116
190
331
455
763
1107
1737
2360
3087
5003
7444
13650
22710
33930
Pressure
(PSIG)
Temp.
(˚F)
(sat.)
7187 7250 7312
250
406
176
324
518
916 1498 2615
200
388
143
264
423
175
378
127
235
375
150
366
111
205
125
353
95
100
338
79
90
331
80
70
3/8
1/4
1/2
7062 7094 7125
3/4
1
11/4
11/2
4
5
6
8
10
10
240
19
35
55
98
160
279
384
643
933
1464
1990
2603
4218
6276
11510
19150
28610
5
228
15
28
45
79
130
227
311
522
757
1188
1615
2112
3423
5093
9339
15540
23220
0
212
11
21
34
60
97
170
233
391
568
891
1210
1583
2566
3818
7000
11650
17400
300
This table represents steam loss thru an orifice on a failed open steam trap, assuming that 25% of the flow consists of condensate.
– thru various orifice diameters discharging to atmosphere (0 PSIG) in lbs/hr
STEAM FLOW
2
5
10
15
25
125
150
200
250
1/32
0.31
0.47
0.58
0.70
0.94
1.53
2.12
2.70
3.30
3.90
5.10
6.30
7.40
1/16
1.25
1.86
2.30
2.80
3.80
6.10
8.50
10.80
13.20
15.60
20.30
25.10
29.80
3/32
2.81
4.20
5.30
6.30
8.45
13.80
19.10
24.40
29.70
35.10
45.70
56.40
67.00
1/8
4.50
7.50
7.40
11.20
15.00
24.50
34.00
43.40
52.90
62.40
81.30
100.00
119.00
5/32
7.80
11.70
14.60
17.60
23.50
38.30
53.10
67.90
82.70
97.40
127.00
156.00
186.00
3/16
11.20
16.70
21.00
25.30
33.80
55.10
76.40
97.70
119.00
140.00
183.00
226.00
268.00
7/32
15.30
22.90
28.70
34.40
46.00
75.00
104.00
133.00
162.00
191.00
249.00
307.00
365.00
1/4
20.00
29.80
37.40
45.00
60.10
98.00
136.00
173.00
212.00
250.00
325.00
401.00
477.00
9/32
25.20
37.80
47.40
56.90
76.10
124.00
172.00
220.00
268.00
316.00
412.00
507.00
603.00
5/16
31.20
46.60
58.50
70.30
94.00
153.00
212.00
272.00
331.00
390.00
508.00
627.00
745.00
11/32
37.70
56.40
70.70
85.10
114.00
185.00
257.00
329.00
400.00
472.00
615.00
758.00
901.00
3/8
44.90
67.10
84.20
101.00
135.00
221.00
306.00
391.00
478.00
561.00
732.00
902.00 1073.00
13/32
52.70
78.80
98.80
119.00
159.00
259.00
359.00
459.00
559.00
659.00
859.00 1059.00 1259.00
7/16
61.10
91.40
115.00
138.00
184.00
300.00
416.00
532.00
648.00
764.00
996.00 1228.00 1460.00
15/32
70.20
105.00
131.00
158.00
211.00
344.00
478.00
611.00
744.00
877.00 1144.00 1410.00 1676.00
1/2
79.80
119.00
150.00
180.00
241.00
392.00
544.00
695.00
847.00
998.00 1301.00 1604.00 1907.00
ENGINEERING
Orifice Diameter
(Inches)
268
12
Inlet Pressure (PSIG)
50
75
100
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM PROPERTIES & FLOW CHARACTERISTICS
PRESSURE DROP IN SCHEDULE 40 PIPE
100 PSIG Saturated Steam
For other pressures use correction factors
psi 0
5
0
factor 6.9 6.0 5.2
10
4.3
15 20
3.6 3.1
3/4"
1"
40
2.0
30
2.4
60
1.5
1-1/4" 1-1/2"
75
1.3
90 100 110 125 150 175 200 225 250 300 350 400 500 600
1.1 1.0 0.92 0.83 0.70 0.62 0.55 0.49 0.45 0.38 0.33 0.29 0.23 0.19
2" 2-1/2"
3"
4"
Pressure Drop psi/100 ft.
15.0
5"
6"
8"
12" 14" 16" 18" 20"
10"
10.0
9.0
8.0
7.0
6.0
4.0
24"
3.0
2.0
1.0
.9
.8
.7
.6
.5
.4
.3
.2
.1
100
200 300 400500
1,000
2
3
4 5
10,000
2
3 4
5 6 7 8 10,000
2
3
4
5
10,000
2
Steam Flow lbs/hr
SIZING STEAM PIPES
Saturated steam lines should be sized for a steam velocity of 4800 to 7200 ft/min.
Piping on pressure reducing stations should be sized for the same steam velocity on
both sides of the regulator. This usually results in having a regulator smaller than the
piping and having larger piping on the downstream side of the regulator.
Example using Steam Velocity Chart (see next page):
100 PSIG Inlet Pressure to control valve;
25 PSIG Outlet Pressure;
1000 lbs/hr flow rate;
Determine pipe size required.
ENGINEERING
Upstream Piping:
Enter Velocity Chart at A 1000 lbs/hr.
Follow line to B 100 PSIG Inlet Pressure.
Follow line vertically upwards to C 11/2” Pipe Diameter.
Steam Velocity at D shows 4800 ft/min.
Downstream Piping:
Enter Velocity Chart at A 1000 lbs/hr.
Follow line to E 25 PSIG Outlet Pressure.
Follow line vertically upwards to F 21/2” Pipe Diameter.
Steam Velocity at G shows 5500 ft/min.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
269
STEAM PROPERTIES & FLOW CHARACTERISTICS
STEAM VELOCITY CHART
(Schedule 40 Pipe)
1"
20,000
"
1/2
"
1 "
1/2
3/4
1 "
1/4
12,000
10,000
8,000
2"
Process Steam
8,000-12,000 FPM
1 "
2/2
3"
G
F
4"
Heating Systems
4,000-6,000 FPM
D
5"
C
6"
8"
Flash Vent Lines
3,000 FPM
6,000
5,000
4,000
3,000
"
10
2,000
"
12
"
14 6"
1
1,000
Multiply Chart Velocity
by Factor below to get
Velocity in Schedule
80 Pipe
20,000
Pipe Size
1/2"
3/4" & 1"
11/4" & 11/2"
2" to 16"
0
25 0
20 0
15 5
12 00
1 5
7
10,000
8,000
6,000
5,000
4,000
Factor
1.30
1.23
1.23"
1.17
1.12
50
Capacity Pounds Per Hour
50,000
40,000
30,000
25
3,000
10
5
2,000
0
A
E
B
0
25 0
20 0
15 5
12 00
1 5
7
1,000
800
600
500
400
50
300
25
5
ENGINEERING
10
200
0
100
Steam Pressure PSIG
(Saturated Steam)
270
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
STEAM PROPERTIES & FLOW CHARACTERISTICS
PERCENT (%) FLASH STEAM
Percent Flash Steam produced when condensate is discharged to atmosphere
(0 PSIG) or into a flash tank controlled at various pressures
Condensate
Pressure
(PSIG)
0
5
10
Flash Tank Pressure (PSIG)
20
30
40
60
80
100
5
10
15
20
30
40
60
80
100
125
150
200
250
300
350
400
1.6
2.9
3.9
4.9
6.5
7.8
10.0
11.8
13.3
14.9
16.3
18.7
20.8
22.5
24.1
25.6
0.0
1.3
2.4
3.3
5.0
6.3
8.5
10.3
11.8
13.5
14.9
17.3
19.4
21.2
22.8
24.2
0.0
1.1
2.1
3.7
5.1
7.3
9.1
10.6
12.3
13.7
16.2
18.2
20.0
21.7
23.1
0.0
1.7
3.0
5.3
7.1
8.7
10.4
11.8
14.3
16.4
18.2
19.9
21.4
0.0
1.4
3.7
5.5
7.1
8.8
10.3
12.8
14.9
16.8
18.4
19.9
0.0
2.3
4.2
5.8
7.5
9.0
11.5
13.7
15.5
17.2
18.7
0.0
1.9
3.5
5.3
6.8
9.4
11.5
13.4
15.1
16.7
0.0
1.6
3.4
4.9
7.6
9.8
11.7
13.4
15.0
0.0
1.8
3.3
6.0
8.2
10.2
11.9
13.5
SIZING OF CONDENSATE RETURN LINE, VENT LINE & FLASH TANK
Velocity of Flash Steam in Condensate Return Lines should be between 4000 and 6000 ft/min. Velocity in Flash Tank should
be less than 600 ft/min. Velocity in a Vent Pipe should be less than 4000 ft/min.
Example: A steam trap with a 160 PSIG steam inlet pressure is being discharged into a flash tank operating at 20 PSIG.
The condensate load on the trap is 3000 lbs/hr.
Problem:
1) Determine the size of the condensate return line from the trap to the flash tank
2) Determine the size of the flash tank
3) Determine the size of the vent line on the flash tank
Solution:
The accepted practice of determining condensate return pipe sizing is to base the size of the return pipe on the amount of flash
steam in the return line. This is due to the fact that the volume of flash steam is over 1000 times greater than the equivalent
volume of liquid condensate. Therefore, the flash steam is the dominant factor affecting flow in the return line. We must first
calculate the amount of flash steam produced.
From the Percent Flash Steam Chart we find that 12.4% of the condensate will flash into steam.
Therefore .124 X 3000 = 372 lbs/hr of flash steam will be produced in the condensate return line and flash tank.
Enter Condensate Line, Flash Tank & Vent Line Sizing chart at A 372 lbs/hr.
Move horizontally to point B 20 PSIG Flash Tank Pressure.
ENGINEERING
Move vertically upwards to point D to determine a 5” Flash Tank Diameter is needed to keep velocities less than 600 ft/min.
Continue to move vertically to point E to determine that the Vent Line on the Flash Tank should be 2” Diameter in order to
keep velocities less than 4000 ft/min.
Continue to move vertically to point C to determine that the Condensate Line Diameter should be 11/2” Diameter to maintain
condensate return line velocities between 4000 and 6000 ft/min.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
271
STEAM PROPERTIES & FLOW CHARACTERISTICS
CONDENSATE LINE, FLASH TANK & VENT LINE SIZING
(Schedule 40 Pipe)
Velocity
(ft/sec)
100
Velocity
(ft/min)
6000 Condensate
Return Line
4000
3000 Vent Pipe
C
66
50
E
"
1/2
"
3/4
1"
1 "
1/4
1 "
1/2
2"
1 "
2/2
3"
4"
5"
6"
8"
"
10
"
12
"
14
"
16
"
18
"
20
"
24
"
26
"
28
"
30
33
1000
17
D
10
600 Flash Tank
50,000
0
10 0
8 0
6
Multiply Chart Velocity
by Factor below to get
Velocity in Schedule
80 Pipe
40 0
3
20,000
20
10
5
0
10,000
8,000
Pipe Size
1/2"
3/4" & 1"
11/4" & 11/2"
2" & 3"
4" to 24"
26" to 30"
5,000
0
10 0
8 0
6
40 0
3
3,000
2,000
20
10
0
1,000
800
500
A
ne
200
B
Factor
1.30
1.23
1.15
1.12
1.1
1.0
Li
e
at g)
ns si
de (p
on nk
C Ta
in sh
re la
su r F
es o
Pr
5
Flash Steam Flow Rate (lb/hr)
30,000
300
0
10 0
8
60
40 0
3
20
10
5
0
100
80
60
50
40
30
20
ENGINEERING
10
272
2000
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
FLUID FLOW IN PIPING
Flow of Water thru Schedule 40 Steel Pipe
Pressure Drop per 1,000 Feet of Schedule 40 Steel Pipe
Flow
Rate
(GPM)
0.37
0.74
1.12
1.49
1.86
2.24
2.98
3.72
5.60
7.44
0.49
1.70
3.53
5.94
9.02
12.25
21.1
30.8
64.6
110.5
11/4”
0.43
0.64
0.86
1.07
1.28
1.72
2.14
3.21
4.29
5.36
6.43
7.51
0.45
0.94
1.55
2.36
3.30
5.52
8.34
17.6
29.1
43.7
62.9
82.5
11/2”
0.47
0.63
0.79
0.95
1.26
1.57
2.36
3.15
3.94
4.72
5.51
6.30
7.08
7.87
0.44
0.74
1.12
1.53
2.63
3.86
8.13
13.5
20.2
29.1
38.2
47.8
60.6
74.7
6”
1.11
1.39
1.67
1.94
2.22
2.50
2.78
3.06
3.33
3.61
3.89
4.16
4.44
4.72
5.00
5.27
5.55
6.11
6.66
7.21
7.77
8.32
8.88
9.44
10.00
10.55
11.10
12.22
13.32
14.43
15.54
16.65
17.76
19.98
22.20
0.39
0.56
0.78
1.06
1.32
1.66
2.05
2.36
2.80
3.29
3.62
4.16
4.72
5.34
5.96
6.66
7.39
8.94
10.6
11.8
13.7
15.7
17.8
20.2
22.6
23.7
26.3
31.8
37.8
44.4
51.5
55.5
63.1
79.8
98.5
2”
0.57
0.76
0.96
1.43
1.91
2.39
2.87
3.35
3.82
4.30
4.78
5.74
6.69
7.65
8.60
9.56
0.46
0.75
1.14
2.33
3.86
5.81
8.04
10.95
13.7
17.4
20.6
29.6
38.6
50.3
63.6
75.1
21/2”
0.67
1.00
1.34
1.68
2.01
2.35
2.68
3.00
3.35
4.02
4.69
5.37
6.04
6.71
8.38
10.06
11.73
0.48
0.99
1.64
2.48
3.43
4.49
5.88
7.14
8.82
12.2
15.3
21.7
26.1
32.3
48.2
60.4
90.0
8”
1.44
1.60
1.76
1.92
2.08
2.24
2.40
2.56
2.72
2.88
3.04
3.20
3.53
3.85
4.17
4.49
4.81
5.13
5.45
5.77
6.09
6.41
7.05
7.69
8.33
8.97
9.62
10.26
11.54
12.83
16.03
19.24
22.43
25.65
0.44
0.55
0.63
0.75
0.88
0.97
1.11
1.27
1.43
1.60
1.69
1.87
2.26
2.70
3.16
3.69
4.21
4.79
5.11
5.73
6.38
7.08
8.56
10.2
11.3
13.0
15.0
17.0
21.6
25.0
39.0
52.4
71.4
93.3
3”
0.87
1.08
1.30
1.52
1.74
1.95
2.17
2.60
3.04
3.48
3.91
4.34
5.42
6.51
7.59
8.68
9.77
10.85
11.94
13.02
0.59
0.67
1.21
1.58
2.06
2.51
3.10
4.29
5.84
7.62
9.22
11.4
17.1
23.5
32.0
39.7
50.2
61.9
75.0
84.7
10”
1.93
2.04
2.24
2.44
2.65
2.85
3.05
3.26
3.46
3.66
3.87
4.07
4.48
4.88
5.29
5.70
6.10
6.51
7.32
8.13
10.18
12.21
14.25
16.28
18.31
20.35
24.42
28.50
0.30
0.63
0.70
0.86
1.01
1.18
1.35
1.54
1.74
1.94
2.23
2.40
2.74
3.27
3.86
4.44
5.11
5.46
6.91
8.54
12.5
18.0
22.9
29.9
37.8
46.7
67.2
85.1
31/2”
0.81
0.97
1.14
1.30
1.46
1.62
1.95
2.27
2.59
2.92
3.24
4.05
4.86
5.67
6.48
7.29
8.10
8.91
9.72
10.53
11.35
12.17
12.97
13.78
14.59
0.42
0.60
0.79
1.00
1.21
1.44
2.07
2.71
3.53
4.46
5.27
7.86
11.3
14.7
19.2
23.1
28.5
34.4
40.9
45.5
52.7
60.7
68.9
77.8
87.3
4”
0.88
1.01
1.13
1.26
1.51
1.76
2.01
2.26
2.52
3.15
3.78
4.41
5.04
5.67
6.30
6.93
7.56
8.18
8.82
9.45
10.08
10.70
11.33
11.96
12.59
13.84
15.10
0.42
0.53
0.67
0.80
1.10
1.50
1.87
2.37
2.81
4.38
6.02
8.20
10.2
12.9
15.9
18.3
21.8
25.5
29.7
32.3
36.7
41.5
46.5
51.7
57.3
69.3
82.5
12”
2.01
2.15
2.29
2.44
2.58
2.72
2.87
3.16
3.45
3.73
4.02
4.30
4.59
5.16
5.73
7.17
8.60
10.03
11.48
12.90
14.34
17.21
20.08
22.95
25.80
28.63
34.38
0.48
0.55
0.62
0.70
0.79
0.88
0.98
1.18
1.40
1.56
1.80
2.07
2.36
2.98
3.47
5.41
7.31
9.95
13.0
15.4
18.9
27.3
37.2
45.1
57.0
70.4
93.6
14”
2.02
2.14
2.25
2.38
2.61
2.85
3.09
3.32
3.55
3.80
4.27
4.74
5.92
7.12
8.32
9.49
10.67
11.84
14.32
16.60
18.98
21.35
23.75
28.50
33.20
0.43
0.48
0.53
0.59
0.68
0.81
0.95
1.10
1.19
1.35
1.71
2.11
3.09
4.45
6.18
7.92
9.36
11.6
15.4
21.0
27.4
34.7
42.9
61.8
84.0
16”
2.18
2.36
2.54
2.73
2.91
3.27
3.63
4.54
5.45
6.35
7.25
8.17
9.08
10.88
12.69
14.52
16.32
18.16
21.80
25.42
29.05
0.40
0.47
0.54
0.62
0.71
0.85
1.05
1.63
2.21
3.00
3.92
4.97
5.72
8.24
12.2
13.6
17.2
21.2
30.9
41.6
54.4
5”
1.12
1.28
1.44
1.60
2.00
2.41
2.81
3.21
3.61
4.01
4.41
4.81
5.21
5.61
6.01
6.41
6.82
7.22
7.62
8.02
8.82
9.62
10.42
11.22
12.02
12.82
13.62
14.42
15.22
16.02
17.63
0.48
0.63
0.80
0.95
1.48
2.04
2.78
3.46
4.37
5.14
6.22
7.41
8.25
9.57
11.0
12.5
14.1
15.0
16.7
18.5
22.4
26.7
31.3
36.3
41.6
44.7
50.5
56.6
63.1
70.0
84.6
18”
2.58
2.88
3.59
4.31
5.03
5.74
6.47
7.17
8.62
10.04
11.48
12.92
14.37
17.23
20.10
22.96
0.48
0.56
0.88
1.27
1.52
2.12
2.50
3.08
4.45
6.06
7.34
9.20
11.5
16.5
20.7
27.1
20”
3.45
4.03
4.61
5.19
5.76
6.92
8.06
9.23
10.37
11.53
13.83
16.14
18.43
0.73
0.94
1.22
1.55
1.78
2.57
3.50
4.57
5.36
6.63
9.54
12.0
15.7
24”
3.19
3.59
3.99
4.80
5.68
6.38
7.19
7.96
9.57
11.18
12.77
0.51
0.60
0.74
1.00
1.36
1.78
2.25
2.78
3.71
5.05
6.60
273
ENGINEERING
1
2
3
4
5
6
8
10
15
20
25
30
35
40
45
50
60
70
80
90
100
125
150
175
200
225
250
275
300
325
350
375
400
425
450
475
500
550
600
650
700
750
800
850
900
950
1,000
1,100
1,200
1,300
1,400
1,500
1,600
1,800
2,000
2,500
3,000
3,500
4,000
4,500
5,000
6,000
7,000
8,000
9,000
10,000
12,000
14,000
16,000
Velocity Pressure Velocity Pressure Velocity Pressure Velocity Pressure Velocity Pressure Velocity Pressure Velocity Pressure Velocity Pressure Velocity Pressure
Drop
Drop
Drop
Drop
Drop
Drop
Drop
Drop
Drop
(ft/s)
(PSI)
(ft/s)
(PSI)
(ft/s)
(PSI)
(ft/s)
(PSI)
(ft/s)
(PSI)
(ft/s)
(PSI)
(ft/s)
(PSI)
(ft/s)
(PSI)
(ft/s)
(PSI)
1”
PIPE, FITTING & FLANGE SPECIFICATIONS
ENGINEERING
P I P E D ATA TA B L E
274
Pipe
Size
(in.)
Outside
Diameter
(in.)
1/
8
0.405
1/
4
0.540
3/
8
0.675
1/
2
0.840
3/
4
1.050
1
1.315
11/4
1.660
11/2
1.900
2
2.375
21/2
2.875
3
3.500
4
4.500
5
5.563
Weight
Class
Carbon
Steel
Schedule
Stainless
Steel
Schedule
Wall
Thickness
(in.)
Inside
Diameter
(in.)
–
STD
XS
–
STD
XS
–
STD
XS
–
–
STD
XS
–
XXS
–
–
STD
XS
–
XXS
–
–
STD
XS
–
XXS
–
–
STD
XS
–
XXS
–
–
STD
XS
–
XXS
–
–
STD
XS
–
XXS
–
–
STD
XS
–
XXS
–
–
STD
XS
–
XXS
–
–
STD
XS
–
–
XXS
–
–
STD
XS
–
–
XXS
–
40
80
–
40
80
–
40
80
–
–
40
80
160
–
–
–
40
80
160
–
–
–
40
80
160
–
–
–
40
80
160
–
–
–
40
80
160
–
–
–
40
80
160
–
–
–
40
80
160
–
–
–
40
80
160
–
–
–
40
80
120
160
–
–
–
40
80
120
160
–
10S
40S
80S
10S
40S
80S
10S
40S
80S
5S
10S
40S
80S
–
–
5S
10S
40S
80S
–
–
5S
10S
40S
80S
–
–
5S
10S
40S
80S
–
–
5S
10S
40S
80S
–
–
5S
10S
40S
80S
–
–
5S
10S
40S
80S
–
–
5S
10S
40S
80S
–
–
5S
10S
40S
80S
–
–
–
5S
10S
40S
80S
–
–
–
.049
.068
.095
.065
.088
.119
.065
.091
.126
.065
.083
.109
.147
.187
.294
.065
.083
.113
.154
.219
.308
.065
.109
.133
.179
.250
.358
.065
.109
.140
.191
.250
.382
.065
.109
.145
.200
.281
.400
.065
.109
.154
.218
.344
.436
.083
.120
.203
.276
.375
.552
.083
.120
.216
.300
.438
.600
.083
.120
.237
.337
.438
.531
.674
.109
.134
.258
.375
.500
.625
.750
.307
.269
.215
.410
.364
.302
.545
.493
.423
.710
.674
.622
.546
.466
.252
.920
.884
.824
.742
.612
.434
1.185
1.097
1.049
.957
.815
.599
1.530
1.442
1.380
1.278
1.160
.896
1.770
1.682
1.610
1.500
1.338
1.100
2.245
2.157
2.067
1.939
1.687
1.503
2.709
2.635
2.469
2.323
2.125
1.771
3.334
3.260
3.068
2.900
2.624
2.300
4.334
4.260
4.026
3.826
3.624
3.438
3.152
5.345
5.295
5.047
4.813
4.563
4.313
4.063
Circum.
(Ext.)
(in.)
1.27
1.70
2.12
2.64
3.30
4.13
5.22
5.97
7.46
9.03
11.00
14.14
17.48
Circum.
(Int.)
(in.)
Flow
Area
(sq. in.)
Weight
of Pipe
(lbs/Ft.)
Weight
of Water
(lbs/Ft.)
Gallons
of Water
per Ft.
Section
Modulus
.96
.85
.68
1.29
1.14
.95
1.71
1.55
1.33
2.23
2.12
1.95
1.72
1.46
.79
2.89
2.78
2.59
2.33
1.92
1.36
3.72
3.45
3.30
3.01
2.56
1.88
4.81
4.53
4.34
4.02
3.64
2.81
5.56
5.28
5.06
4.71
4.20
3.46
7.05
6.78
6.49
6.09
5.30
4.72
8.51
8.28
7.76
7.30
6.68
5.56
10.47
10.24
9.64
9.11
8.24
7.23
13.62
13.38
12.65
12.02
11.39
10.80
9.90
16.79
16.63
15.86
15.12
14.34
13.55
12.76
.074
.057
.036
.132
.104
.072
.233
.191
.141
.396
.357
.304
.234
.171
.050
.665
.614
.533
.433
.296
.148
1.103
.945
.864
.719
.522
.282
1.839
1.633
1.495
1.283
1.057
.630
2.461
2.222
2.036
1.767
1.406
.950
3.958
3.654
3.355
2.953
2.241
1.774
5.764
5.453
4.788
4.238
3.546
2.464
8.730
8.347
7.393
6.605
5.408
4.155
14.75
14.25
12.73
11.50
10.31
9.28
7.80
22.44
22.02
20.01
18.19
16.35
14.61
12.97
.19
.24
.31
.33
.42
.54
.42
.57
.74
.54
.67
.85
1.09
1.31
1.71
.69
.86
1.13
1.47
1.94
2.44
.87
1.40
1.68
2.17
2.84
3.66
1.11
1.81
2.27
3.00
3.76
5.21
1.28
2.09
2.72
3.63
4.86
6.41
1.61
2.64
3.65
5.02
7.46
9.03
2.48
3.53
5.79
7.66
10.01
13.69
3.03
4.33
7.58
10.25
14.32
18.58
3.92
5.61
10.79
14.98
19.00
22.51
27.54
6.36
7.77
14.62
20.78
27.04
32.96
38.55
.032
.025
.016
.057
.045
.031
.101
.083
.061
.172
.155
.132
.102
.074
.022
.288
.266
.231
.188
.128
.064
.478
.409
.375
.312
.230
.122
.797
.708
.649
.555
.458
.273
1.066
.963
.882
.765
.608
.420
1.72
1.58
1.45
1.28
.97
.77
2.50
2.36
2.07
1.87
1.54
1.07
3.78
3.62
3.20
2.86
2.35
1.80
6.39
6.18
5.50
4.98
4.47
4.02
3.38
9.72
9.54
8.67
7.88
7.09
6.33
5.61
.004
.003
.002
.007
.005
.004
.012
.010
.007
.021
.019
.016
.012
.009
.003
.035
.032
.028
.022
.015
.008
.057
.049
.045
.037
.027
.015
.096
.085
.078
.067
.055
.033
.128
.115
.106
.092
.073
.049
.206
.190
.174
.153
.116
.092
.299
.283
.249
.220
.184
.128
.454
.434
.384
.343
.281
.216
.766
.740
.661
.597
.536
.482
.405
1.17
1.14
1.04
.945
.849
.759
.674
.00437
.00523
.00602
.01032
.01227
.01395
.01736
.0216
.0255
.0285
.0341
.0407
.0478
.0527
.0577
.0467
.0566
.0706
.0853
.1004
.1103
.0760
.1151
.1328
.1606
.1903
.2136
.1250
.1934
.2346
.2913
.3421
.4110
.1662
.2598
.3262
.4118
.5078
.5977
.2652
.4204
.5606
.7309
.9790
1.1040
.4939
.6868
1.064
1.339
1.638
1.997
.744
1.041
1.724
2.225
2.876
3.424
1.249
1.761
3.214
4.271
5.178
5.898
6.791
2.498
3.029
5.451
7.431
9.250
10.796
12.090
Pipe
Size
(in.)
1/
8
1/
4
3/
8
1/
2
3/
4
1
11/4
11/2
2
21/2
3
4
5
PIPE, FITTING & FLANGE SPECIFICATIONS
P I P E D ATA TA B L E
Pipe
Size
(in.)
6
8
10
12
14
Weight
Class
Carbon
Steel
Schedule
Stainless
Steel
Schedule
Wall
Thickness
(in.)
Inside
Diameter
(in.)
–
–
STD
XS
–
–
XXS
–
–
40
80
120
160
–
5S
10S
40S
80S
–
–
–
.109
.134
.280
.432
.562
.719
.864
6.407
6.357
6.065
5.761
5.501
5.187
4.897
–
–
–
–
STD
–
XS
–
–
–
XXS
–
–
–
20
30
40
60
80
100
120
140
–
160
5S
10S
–
–
40S
–
80S
–
–
–
–
–
.109
.148
.250
.277
.322
.406
.500
.594
.719
.812
.875
.906
8.407
8.329
8.125
8.071
7.981
7.813
7.625
7.437
7.187
7.001
6.875
6.813
10.750
–
–
–
–
STD
XS
–
–
–
XXS
–
–
–
20
30
40
60
80
100
120
140
160
5S
10S
–
–
40S
80S
–
–
–
–
–
.134
.165
.250
.307
.365
.500
.594
.719
.844
1.000
1.125
10.482
10.420
10.250
10.136
10.020
9.750
9.562
9.312
9.062
8.750
8.500
12.750
–
–
–
–
STD
–
XS
–
–
–
XXS
–
–
–
–
20
30
–
40
–
60
80
100
120
140
160
5S
10S
–
–
40S
–
80S
–
–
–
–
–
–
.156
.180
.250
.330
.375
.406
.500
.562
.688
.844
1.000
1.125
1.312
12.438
12.390
12.250
12.090
12.000
11.938
11.750
11.626
11.374
11.062
10.750
10.500
10.126
14.000
–
–
–
–
STD
–
XS
–
–
–
–
–
–
–
–
10
20
30
40
–
60
80
100
120
140
160
5S
10S
–
–
–
–
–
–
–
–
–
–
–
.156
.188
.250
.312
.375
.438
.500
.594
.750
.938
1.094
1.250
1.406
13.688
13.624
13.500
13.376
13.250
13.124
13.000
12.812
12.500
12.124
11.812
11.500
11.188
–
–
–
–
STD
XS
–
–
–
–
–
–
–
–
10
20
30
40
60
80
100
120
140
160
5S
10S
–
–
–
–
–
–
–
–
–
–
.165
.188
.250
.312
.375
.500
.656
.844
1.031
1.219
1.438
1.594
15.670
15.624
15.500
15.376
15.250
15.000
14.688
14.312
13.938
13.562
13.124
12.812
6.625
8.625
16.00
Circum.
(Ext.)
(in.)
Circum.
(Ext.)
(in.)
Flow
Area
(sq. in.)
Weight
of Pipe
(lbs/Ft.)
Weight
of Water
(lbs/Ft.)
Gallons
of Water
per Ft.
Section
Modulus
20.81
20.13
19.97
19.05
18.10
17.28
16.30
15.38
32.24
31.74
28.89
26.07
23.77
21.15
18.84
7.60
9.29
18.97
28.57
36.39
45.35
53.16
13.97
13.75
12.51
11.29
10.30
9.16
8.16
1.68
1.65
1.50
1.35
1.24
1.10
.978
3.576
4.346
8.496
12.22
14.98
17.81
20.02
26.41
26.17
25.53
25.36
25.07
24.55
23.95
23.36
22.58
21.99
21.60
21.40
55.51
54.48
51.85
51.16
50.03
47.94
45.66
43.46
40.59
38.50
37.12
36.46
9.93
13.40
22.36
24.70
28.55
35.64
43.39
50.95
60.71
67.76
72.42
74.69
24.06
23.61
22.47
22.17
21.70
20.77
19.78
18.83
17.59
16.68
16.10
15.80
2.88
2.83
2.69
2.66
2.60
2.49
2.37
2.26
2.11
2.00
1.93
1.89
6.131
8.212
13.39
14.69
16.81
20.58
24.51
28.14
32.58
35.65
37.56
38.48
33.77
32.93
32.74
32.20
31.84
31.48
30.63
30.04
29.25
28.47
27.49
26.70
86.29
85.28
82.52
80.69
78.86
74.66
71.84
68.13
64.53
60.13
56.75
15.19
18.65
28.04
34.24
40.48
54.74
64.43
77.03
89.29
104.13
115.64
37.39
36.95
35.76
34.96
34.20
32.35
31.13
29.53
27.96
26.06
24.59
4.48
4.43
4.29
4.19
4.10
3.88
3.73
3.54
3.35
3.12
2.95
11.71
14.30
21.15
25.57
29.90
39.43
45.54
53.22
60.32
68.43
74.29
10
40.06
39.08
38.92
38.48
37.98
37.70
37.50
36.91
36.52
35.73
34.75
33.77
32.99
31.81
121.50
120.57
117.86
114.80
113.10
111.93
108.43
106.16
101.64
96.14
90.76
86.59
80.53
20.98
24.17
33.38
43.77
49.56
53.52
65.42
73.15
88.63
107.32
125.49
139.67
160.27
52.65
52.25
51.07
49.74
49.00
48.50
46.92
46.00
44.04
41.66
39.33
37.52
34.89
6.31
6.26
6.12
5.96
5.88
5.81
5.63
5.51
5.28
4.99
4.71
4.50
4.18
19.2
22.0
30.2
39.0
43.8
47.1
56.7
62.8
74.6
88.1
100.7
109.9
122.6
12
43.98
43.00
42.80
42.41
42.02
41.63
41.23
40.84
40.25
39.27
38.09
37.11
36.13
35.15
147.15
145.78
143.14
140.52
137.88
135.28
132.73
128.96
122.72
115.49
109.62
103.87
98.31
23.07
27.73
36.71
45.61
54.57
63.44
72.09
85.05
106.13
130.85
150.79
170.28
189.11
63.77
63.17
62.03
60.89
59.75
58.64
57.46
55.86
53.18
50.04
47.45
45.01
42.60
7.64
7.57
7.44
7.30
7.16
7.03
6.90
6.70
6.37
6.00
5.69
5.40
5.11
23.2
27.8
36.6
45.0
53.2
61.3
69.1
80.3
98.2
117.8
132.8
146.8
159.6
14
49.23
49.08
48.69
48.31
47.91
47.12
46.14
44.96
43.79
42.61
41.23
40.26
192.85
191.72
188.69
185.69
182.65
176.72
169.44
160.92
152.58
144.50
135.28
128.96
27.90
31.75
42.05
52.27
82.58
82.77
107.50
136.61
164.82
192.43
233.64
245.25
83.57
83.08
81.74
80.50
79.12
76.58
73.42
69.73
66.12
62.62
58.64
55.83
10.02
9.96
9.80
9.65
9.49
9.18
8.80
8.36
7.93
7.50
7.03
6.70
32.2
36.5
48.0
59.2
70.3
91.5
116.6
144.5
170.5
194.5
220.0
236.7
27.10
50.27
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Pipe
Size
(in.)
6
8
16
275
ENGINEERING
16
Outside
Diameter
(in.)
(continued)
PIPE, FITTING & FLANGE SPECIFICATIONS
P I P E D ATA TA B L E
Pipe
Size
(in.)
18
20
22
24
18.00
20.00
22.00
24.00
30.00
Weight
Class
Carbon
Steel
Schedule
Stainless
Steel
Schedule
Wall
Thickness
(in.)
Inside
Diameter
(in.)
–
–
–
–
STD
–
XS
–
–
–
–
–
–
–
–
–
10
20
–
30
–
40
60
80
100
120
140
160
5S
10S
–
–
–
–
–
–
–
–
–
–
–
–
.165
.188
.250
.312
.375
.438
.500
.562
.750
.938
1.156
1.375
1.562
1.781
17.67
17.62
17.50
17.38
17.25
17.12
17.00
16.88
16.50
16.12
15.69
15.25
14.88
14.44
–
–
–
–
STD
XS
–
–
–
–
–
–
–
–
10
20
30
40
60
80
100
120
140
160
5S
10S
–
–
–
–
–
–
–
–
–
–
.188
.218
.250
.375
.500
.594
.812
1.031
1.281
1.500
1.750
1.969
19.62
19.56
19.50
19.25
19.00
18.81
18.38
17.94
17.44
17.00
16.50
16.06
–
–
–
STD
XS
–
–
–
–
–
–
–
–
10
20
30
60
80
100
120
140
160
5S
10S
–
–
–
–
–
–
–
–
–
.188
.218
.250
.375
.500
.875
1.125
1.375
1.625
1.875
2.125
21.62
21.56
21.50
21.25
21.00
20.25
19.75
19.25
18.75
18.25
17.75
–
–
STD
XS
–
–
–
–
–
–
–
–
–
10
20
–
30
40
60
80
100
120
140
160
5S
10S
–
–
–
–
–
–
–
–
–
–
.218
.250
.375
.500
.562
.688
.969
1.219
1.531
1.812
2.062
2.344
23.56
23.50
23.25
23.00
22.88
22.62
22.06
21.56
20.94
20.38
19.88
19.31
–
–
STD
XS
–
–
10
–
20
30
5S
10S
–
–
–
.250
.312
.375
.500
.625
29.50
29.38
29.25
29.00
28.75
Circum.
(Ext.)
(in.)
56.55
62.83
69.12
75.40
94.25
Circum.
(Ext.)
(in.)
Flow
Area
(sq. in.)
Weight
of Pipe
(lbs/Ft.)
Weight
of Water
(lbs/Ft.)
Gallons
of Water
per Ft.
Section
Modulus
55.51
55.37
54.98
54.59
54.19
53.80
53.41
53.02
51.84
50.66
49.29
47.91
46.73
45.36
245.22
243.95
240.53
237.13
233.71
230.30
226.98
223.68
213.83
204.24
193.30
182.66
173.80
163.72
31.43
35.76
47.39
58.94
70.59
82.15
93.45
104.87
138.17
170.92
207.96
244.14
274.22
308.50
106.26
105.71
104.21
102.77
101.18
99.84
98.27
96.93
92.57
88.50
83.76
79.07
75.32
70.88
12.74
12.67
12.49
12.32
12.14
11.96
11.79
11.62
11.11
10.61
10.04
9.49
9.03
8.50
40.8
46.4
61.1
75.5
89.6
103.4
117.0
130.1
168.3
203.8
242.3
277.6
305.5
335.6
61.65
61.46
61.26
60.48
59.69
59.10
57.73
56.35
54.78
53.41
51.84
50.46
302.46
300.61
298.65
290.04
283.53
278.00
265.21
252.72
238.83
226.98
213.82
202.67
39.78
46.06
52.73
78.60
104.13
123.11
166.40
208.87
256.10
296.37
341.09
379.17
131.06
130.27
129.42
125.67
122.87
120.46
114.92
109.51
103.39
98.35
92.66
87.74
15.71
15.62
15.51
15.12
14.73
14.44
13.78
13.13
12.41
11.79
11.11
10.53
57.4
66.3
75.6
111.3
145.7
170.4
225.7
277.1
331.5
375.5
421.7
458.5
67.93
67.75
67.54
66.76
65.97
63.62
62.05
60.48
58.90
57.33
55.76
367.25
365.21
363.05
354.66
346.36
322.06
306.35
291.04
276.12
261.59
247.45
43.80
50.71
58.07
86.61
114.81
197.41
250.81
302.88
353.61
403.00
451.06
159.14
158.26
157.32
153.68
150.09
139.56
132.76
126.12
119.65
113.36
107.23
19.08
18.97
18.86
18.42
17.99
16.73
15.91
15.12
14.34
13.59
12.85
69.7
80.4
91.8
135.4
177.5
295.0
366.4
432.6
493.8
550.3
602.4
74.03
73.83
73.04
72.26
71.86
71.08
69.31
67.74
65.78
64.01
62.44
60.67
436.10
433.74
424.56
415.48
411.00
402.07
382.35
365.22
344.32
326.08
310.28
292.98
55
63
95
125
141
171
238
297
367
430
483
542
188.98
187.95
183.95
179.87
178.09
174.23
165.52
158.26
149.06
141.17
134.45
126.84
22.65
22.53
22.05
21.58
21.35
20.88
19.86
18.97
17.89
16.94
16.12
15.22
96.0
109.6
161.9
212.5
237.0
285.1
387.7
472.8
570.8
652.1
718.9
787.9
92.68
92.29
91.89
91.11
90.32
683.49
677.71
671.96
660.52
649.18
79
99
119
158
196
296.18
293.70
291.18
286.22
281.31
35.51
35.21
34.91
34.31
33.72
172.3
213.8
255.3
336.1
414.9
ENGINEERING
30
Outside
Diameter
(in.)
(continued)
276
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Pipe
Size
(in.)
18
20
22
24
30
PIPE, FITTING & FLANGE SPECIFICATIONS
MAXIMUM ALLOWABLE WORKING PRESSURES FOR SEAMLESS CARBON STEEL PIPE
Nominal
Pipe Size (in.)
1/2
SCH 10
-
SCH 20
-
SCH 30
-
Maximum allowable working pressure at -20 to 650 ˚F
STD WALL SCH 40 SCH 60
XH
SCH 80 SCH 100 SCH 120
1694
1694
-
3036
3036
-
-
SCH 140 SCH 160
-
4551
XXH
9223
3/4
659
-
-
1450
1450
-
2589
2589
-
-
-
4505
7531
1
1065
-
-
1578
1578
-
2601
2601
-
-
-
4290
7150
11/4
556
-
-
1069
1069
-
1941
1941
-
-
-
3001
5593
11/2
486
-
-
1004
1004
-
1821
1821
-
-
-
3091
5114
2
388
-
-
903
903
-
1659
1659
-
-
-
3225
4475
21/2
431
-
-
1214
1214
-
1936
1936
-
-
-
2963
4936
4405
3
346
-
-
1094
1094
-
1773
1773
-
-
-
2933
31/2
303
-
-
1023
1023
-
1671
1671
-
-
-
-
-
4
269
-
-
974
974
-
1598
1598
-
2243
-
2868
3858
5
284
-
-
888
888
-
1475
1475
-
2123
-
2791
3485
6
239
-
-
833
833
-
1473
1473
-
2038
-
2738
3414
8
225
543
628
770
1038
1343
1343
1649
2068
2388
2715
2605
-
10
224
434
578
723
723
1070
1070
1311
1641
1975
2406
2754
-
12
219
366
534
630
696
1033
898
1305
1653
2009
2295
2735
-
14
333
451
573
573
693
999
816
1311
1690
2013
2341
2675
-
16
291
395
500
500
711
980
711
1305
1638
1975
2378
2669
-
18
258
350
538
444
725
1013
631
1303
1648
1998
2303
2665
-
20
233
399
568
399
693
995
568
1299
1653
1970
2338
2663
-
22
211
-
-
363
-
-
515
-
-
-
-
-
-
24
194
331
541
331
683
1004
471
1295
1664
2003
2309
2656
-
26
-
-
-
306
-
-
435
-
-
-
-
-
-
30
209
376
488
265
-
-
376
-
-
-
-
-
-
36
-
-
-
220
-
-
314
-
-
-
-
-
-
42
-
-
-
189
-
-
269
-
-
-
-
-
-
S For allowable working pressures at higher temperatures, multiply values listed above by the following factors:
Grade A
Grade B
Temperature
700 ˚F
750 ˚F
800 ˚F
850 ˚F
900 ˚F
Temperature
700 ˚F
750 ˚F
800 ˚F
850 ˚F
900 ˚F
Multiply by
0.971
0.892
0.750
0.708
0.417
Multiply by
0.956
0.853
0.720
0.620
0.333
ENGINEERING
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
277
PIPE, FITTING & FLANGE SPECIFICATIONS
FLANGE STANDARDS – Dimensional Data in inches
125 lb. CAST IRON
PIPE SIZE
Diameter of Flange
Thickness of Flange (min)a
ANSI STANDARD B16.1
1/
3/
11/4
45/8
11/2
5
2
6
21/2
7
3
71/2
31/2
81/2
4
9
3/
13/
16
15/
15/
81/
–
–
1
41/4
–
–
7/
16
1/
9/
16
5/
8
11/
16
31/
37/
43/
51/
2
4
2
4
5
10
16
16
6
11
8
131/2
10
16
12
19
1
11/8
13/16
11/4
91/
113/
141/
17
Diameter of Bolt Circle
–
–
31/8
6
7
71/
Number of Bolts
–
–
4
4
4
4
4
4
8
8
8
8
8
12
12
Diameter of Bolts
–
–
1/
2
1/
1/
5/
8
5/
8
5/
5/
8
5/
3/
3/
3/
7/
7/
2
2
8
2
4
2
8
2
8
2
4
2
4
4
4
4
8
8
a 125 lb. Cast Iron Flanges have plain faces (i.e. not raised faces).
250 lb. CAST IRON
PIPE SIZE
Diameter of Flange
ANSI STANDARD B16.1
1/
3/
11/4
51/4
3/
11/2
61/8
2
61/2
21/2
71/2
3
81/4
31/2
9
4
10
5
11
6
121/2
8
15
10
12
171/2 201/2
7/
1
11/8
13/16
11/4
13/8
17/16
15/8
17/8
–
–
1
47/8
Thickness of Flange (min)b
–
–
11/
16
Diameter of Raised Face
–
–
Diameter of Bolt Circle
–
–
Number of Bolts
–
–
4
4
4
8
8
8
8
Diameter of Bolts
–
–
5/
8
5/
3/
5/
3/
3/
3/
2
4
4
13/
16
8
2
211/16 31/16 39/16 43/16 415/16 511/16 65/16 615/16 85/16 911/16 1115/16 141/16 167/16
31/2
37/8
8
41/2
4
5
8
57/8
4
65/8
4
71/4
4
77/8
91/4
105/8
13
8
8
12
12
16
16
3/
4
3/
3/
7/
8
1
11/8
4
4
151/4 173/4
b 250 lb. Cast Iron Flanges have a 1/16” raised face which is included in the flange thickness dimensions.
150 lb. BRONZE
ANSI STANDARD B16.24
PIPE SIZE
1/
Diameter of Flange
Thickness of Flange (min)c
31/2
5/
16
41/4
3/
8
5
6
11/
32
13/
32
7/
16
1/
2
Diameter of Bolt Circle
23/8
23/4
31/8
31/2
37/8
43/4
4
4
4
4
4
1/
1/
2
1/
2
1/
1/
Number of Bolts
Diameter of Bolts
2
2
3/
4
37/8
1
11/4
45/8
2
11/2
2
21/2
3
31/2
7
71/2
5/
8
51/2
6
7
71/2
4
4
4
8
5/
8
5/
8
5/
5/
8
2
9/
16
8
4
5
6
8
10
12
81/2
9
11/
16
11/
10
3/
4
11
13/
131/2
15/
16
16
1
19
11/16
81/2
91/2
113/4 141/4
8
8
8
8
12
12
5/
3/
3/
3/
7/
7/
16
8
4
16
4
4
8
17
8
c 150 lb. Bronze Flanges have plain faces (i.e. not raised faces) with two concentric gasket-retaining grooves between the port and the bolt holes.
300 lb. BRONZE
PIPE SIZE
Diameter of Flange
ENGINEERING
Thickness of Flange (min)d
Diameter of Bolt Circle
Number of Bolts
Diameter of Bolts
ANSI STANDARD B16.24
1/
33/
45/
8
1
47/8
11/4
51/4
1/
17/
32
19/
32
5/
11/
25/
31/
31/2
37/
41/
4
4
4
4
4
1/
5/
8
5/
8
5/
3/
5/
8
2
4
2
8
2
3/
4
4
8
8
8
11/2
61/2
16
2
4
2
61/2
21/2
71/2
3
81/4
31/2
9
3/
4
13/
16
29/
5
57/
65/
8
8
3/
4
8
4
10
5
11
6
121/2
8
15
10
–
12
–
31/
11/16
11/8
13/16
13/8
–
–
71/
77/
91/
105/
13
–
–
8
8
8
8
12
12
–
–
3/
3/
4
3/
3/
3/
7/
–
–
32
8
4
32
4
8
4
4
4
8
4
8
d 300 lb. Bronze Flanges have plain faces (i.e. not raised faces) with two concentric gasket-retaining grooves between the port and the bolt holes.
278
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PIPE, FITTING & FLANGE SPECIFICATIONS
FLANGE STANDARDS – Dimensional Data in inches (continued)
150 lb. STEEL
ANSI STANDARD B16.5
1/
PIPE SIZE
Diameter of Flange
2
3/
4
1
4
11/4
45/8
11/2
5
–
–
Thickness of Flange (min)e
–
–
Diameter of Raised Face
–
–
2
21/2
27/8
31/
37/
7/
16
1/
2
9/
16
21/2
7
2
6
5/
16
3/
35/8
41/8
5
43/
51/
8
11/
3
71/2
4
31/2
81/2
4
9
5
10
8
131/2
10
16
12
19
1
11/8
13/16
11/4
13/
15/
51/2
63/16 75/16
81/2
105/8 123/4
15
81/
91/
113/
141/4
17
16
16
15/
6
11
16
Diameter of Bolt Circle
–
–
31/8
6
7
71/2
Number of Bolts
–
–
4
4
4
4
4
4
8
8
8
8
8
12
12
Diameter of Bolts
–
–
1/
1/
2
1/
5/
5/
5/
5/
5/
3/
3/
4
3/
7/
7/
8
2
2
8
2
4
8
2
8
8
8
8
2
4
2
4
4
8
e 150 lb. Steel Flanges have a 1/16” raised face which is included in the flange thickness dimensions.
300 lb. STEEL
ANSI STANDARD B16.5
1/
PIPE SIZE
Diameter of Flange
3/
11/
11/
71/2
3
81/4
31/
9
4
10
5
11
6
121/2
8
15
10
12
171/2 201/2
7/
8
1
11/8
13/16
11/4
13/8
17/16
15/8
17/8
2
27/8
35/8
41/8
5
51/2
63/16 75/16
81/2
105/8 123/4
15
41/2
5
57/8
65/8
71/4
77/8
91/4
105/8
13
8
8
12
12
16
16
3/
4
3/
4
3/
7/
8
1
11/8
–
–
1
47/8
Thickness of Flange (min)f
–
–
11/
Diameter of Raised Face
–
–
2
21/2
Diameter of Bolt Circle
–
–
31/2
37/8
Number of Bolts
–
–
4
4
4
8
8
8
8
–
5/
3/
5/
3/
4
3/
4
3/
4
3/
4
Diameter of Bolts
2
–
4
16
8
4
51/4
3/
4
4
2
61/8
13/
16
8
2
61/2
21/
2
2
4
151/4 173/4
f 300 lb. Steel Flanges have a 1/16” raised face which is included in the flange thickness dimensions.
400 lb. STEEL
ANSI STANDARD B16.5
1/
3/
1
47/8
11/4
51/4
11/
13/
11/2
61/8
2
61/2
21/2
71/2
3
81/4
31/2
9
4
10
5
11
6
121/2
8
15
10
12
171/2 201/2
7/
1
11/8
11/4
13/8
13/8
11/2
15/8
17/8
21/8
21/4
35/8
41/8
5
51/2
63/16 75/16
81/2
105/8 123/4
15
5
57/
65/
71/
77/
91/
105/
PIPE SIZE
Diameter of Flange
33/4
45/8
Thickness of Flange (min)g
9/
16
5/
Diameter of Raised Face
13/8
111/16
2
21/2
27/8
Diameter of Bolt Circle
25/
31/
31/2
37/
41/2
Number of Bolts
Diameter of Bolts
2
8
4
8
4
16
16
8
8
8
8
4
8
4
8
4
4
4
4
4
8
8
8
8
8
8
12
1/
5/
5/
5/
3/
5/
8
3/
4
3/
4
7/
8
7/
8
7/
8
7/
2
8
8
8
4
8
13
151/
173/4
12
16
16
1
11/8
11/4
4
g 400 lb. Steel Flanges have a 1/4” raised face which is included in the flange thickness dimensions.
600 lb. STEEL
ANSI STANDARD B16.5
1/
3/
33/
Thickness of Flange (min)h
9/
16
5/
Diameter of Raised Face
13/
111/
Diameter of Bolt Circle
25/8
Number of Bolts
Diameter of Bolts
2
4
8
4
45/
8
8
16
31/4
1
47/8
11/4
51/4
11/2
61/8
2
61/2
21/2
71/2
3
81/4
31/2
9
4
103/4
5
13
6
14
8
161/2
10
20
12
22
11/
13/
7/
1
11/8
11/4
13/8
11/2
13/4
17/8
23/16
21/2
25/8
2
21/
2
27/8
35/
41/
5
51/
63/
75/
81/
105/
123/4
15
31/2
37/8
41/2
5
57/8
65/8
71/4
81/2
101/2 111/2 133/4
17
191/4
16
16
8
8
8
2
16
16
2
8
4
4
4
4
4
8
8
8
8
8
8
12
12
16
20
1/
5/
5/
5/
3/
5/
8
3/
4
3/
4
7/
8
7/
8
1
1
11/8
11/4
11/4
2
8
8
8
4
h 600 lb. Steel Flanges have a 1/4” raised face which is included in the flange thickness dimensions.
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
279
ENGINEERING
PIPE SIZE
Diameter of Flange
PIPE, FITTING & FLANGE SPECIFICATIONS
FITTING STANDARDS & SPECIFICATIONS
Class or Material
Dimensions
Malleable Iron Fittings
Material Spec.
Galvanizing
Thread
Pressure Rating
Federal/Other
ASME B16.3•
ASME B16.3•
ASTM A-197
ASTM A-197
ASTM A-153
ASTM A-153
ASME B120.1+
ASME B120.1+
ASME B16.3•
ASME B16.3•
ASME B16.3**
ASME B16.39•
ASME B16.39•
ASME B16.39•
ASTM A-197
ASTM A-197
ASTM A-197
ASTM A-153
ASTM A-153
ASTM A-153
ASME B120.1+
ASME B120.1+
ASME B120.1+
ASME B16.39•
ASME B16.39•
ASME B16.39•
ASME B16.39***
ASTM A-126 (A)
ASTM A-126 (A)
ASTM A-153
ASTM A-153
ASME B120.1+
ASME B120.1+
ASME B16.4•
ASME B16.4•
ASME B16.4‹
ASME B16.4‹
ASTM A-126 (A)
ASTM A-153
ASME B120.1+
ASME B16.14•
WW-P-471
ASTM A-126 (A)
ASTM A-153
ASME B120.1+
ASME B16.12•
ASTM A-126 (A) or (B)
ASTM A-126 (B)
ASTM A-126 (A) or (B)
ASTM A-126 (B)
ASTM A-153
ASTM A-153
ASTM A-153
ASTM A-153
ASME B120.1+
ASME B120.1+
ASME B120.1+
ASME B120.1+
ASME B16.1•
ASME B16.1•
ASME B16.1•
ASME B16.1•
ASME B16.11•
Class 150/PN 20
Class 300/PN 50
Malleable Iron Unions
Class 150/PN 20
Class 250
Class 300/PN 50
Cast Iron Threaded Fittings
Class 125
Class 250
ASME B16.4•
ASME B16.4•
Cast Iron Plugs & Bushings
ASME B16.14•
Cast Iron Drainage Threaded Fittings
ASME B16.12•
Cast Iron Flanges & Flanged Fittings
Class 125 (1 -12 )
Class 125 (14 & up)
Class 250 (1 -12 )
Class 250 (14 & up)
ASME B16.1•
ASME B16.1•
ASME B16.1•
ASME B16.1•
ASME B16.1•
ASME B16.1•
ASME B16.1•
ASME B16.1•
Forged Steel Threaded Fittings
Class 2000, 3000,
6000
ASME B16.11•
ASTM A105,
ASTM A182, ASTM A350
ASME B120.1+
ASTM A733
ASTM A53 Type F
or Type E
ASME B120.1+
WWN 351
ASTM A733
ASTM A106 Gr.B
ASME B120.1+
WWN 351
ASTM B43
ASME B120.1+
WWN 351
Pipe Nipples
Steel Pipe - welded
Steel Pipe - seamless
(High Temperature)
Brass
ENGINEERING
• an American National standard (ANSI)
+ ASME B120.1 was ANSI B2.1
‹ Formerly WW-P-501
** Formerly WW-P-521
*** Formerly WW-U-531
280
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PIPE, FITTING & FLANGE SPECIFICATIONS
STANDARD CLASS PRESSURE-TEMPERATURE RATINGS ANSI/ASME B16.34
Working
Pressure
by
Classes
Temperature
(˚F)
A 216
WCB (a)
A 352
LCB (d)
A 216 WCC (a)
A 352 LC2 (d)
A 352 LC3 (d)
A 352 LCC (e)
A 217
WC1 (b)
A 352
LC1 (d)
A 217
WC4 (h)
A 217
WC5 (i)
A 217
WC6 (j)
A 217
WC9 (j)
A 217
C5
A 217
C12
A 351
CF3 (f)
A 351
CF8
A 351
CF3M (g)
A 351
CF8M
A 351
CF8C
A 351
CN7M (l)
300 LB.
150 LB.
in PSI
Pressure Drop per 1,000 Feet of Schedule 40 SteelWorking
Pipe, inPressure
pounds per
square inch Pressure Drop per 1,000 Feet of Schedule 40
285
260
230
200
170
265
250
230
200
170
290
260
230
200
170
265
260
230
200
170
290
260
230
200
170
290
260
230
200
170
290
260
230
200
170
290
260
230
200
170
290
260
230
200
170
275
235
205
180
170
275
240
215
195
170
275
245
225
200
170
230
215
200
185
170
600
650
700
750
800
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
140
125
110
95
80
850
900
950
1000
1050
65
50
35
20
–
65
50
35
20
–
65
50
35
20
–
65
50
35
20
–
65
50
35
20
20(1)
65
50
35
20
20(1)
65
50
35
20
20(1)
65
50
35
20
20(1)
65
50
35
20
20(1)
65
50
35
20
20(1)
65
50
35
20
20(1)
65
50
35
20
20(1)
–
–
–
–
–
1100
1150
1200
1250
1300
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
20(1)
20(1)
15(1)
–
–
20(1)
20(1)
20(1)
–
–
20(1)
20(1)
20(1)
–
–
20(1)
20(1)
20(1)
–
–
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
20(1)
–
–
–
–
–
1350
1400
1450
1500
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
20(1)
20(1)
15(1)
10(1)
20(1)
20(1)
20(1)
15(1)
20(1)
20(1)
20(1)
15(1)
–
–
–
–
-20 to 100
200
300
400
500
740
675
655
635
600
695
655
640
620
585
750
750
730
705
665
695
680
655
640
620
750
750
730
705
665
750
710
675
660
640
750
715
675
650
640
750
750
730
705
665
750
750
730
705
665
720
600
530
470
435
720
620
560
515
480
720
635
590
555
520
600
555
525
480
470
600
650
700
750
800
550
535
535
505
410
535
525
520
475
390
605
590
570
505
410
605
590
570
530
510
605
590
570
530
510
605
590
570
530
510
605
590
570
530
510
605
590
570
530
510
605
590
570
530
510
415
410
405
400
395
450
445
430
425
415
490
480
470
460
455
455
450
445
440
430
850
900
950
1000
1050
270
170
105
50
–
270
170
105
50
–
270
170
105
50
–
485
450
280
165
–
485
450
345
215
190
485
450
380
225
140
485
450
380
270
200
440
355
260
190
140
485
450
370
290
190
390
385
375
325
310
405
395
385
365
360
445
430
385
365
360
–
–
–
–
–
1100
1150
1200
1250
1300
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
95
50
35
–
–
115
105
55
–
–
105
70
45
–
–
115
75
50
–
–
260
195
155
110
85
325
275
205
180
140
325
275
170
125
95
–
–
–
–
–
1350
1400
1450
1500
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
60
50
35
25
105
75
60
40
70
50
40
35
–
–
–
–
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
281
ENGINEERING
-20 to 100
200
300
400
500
PIPE, FITTING & FLANGE SPECIFICATIONS
STANDARD CLASS PRESSURE-TEMPERATURE RATINGS ANSI/ASME B16.34 (continued)
Working
Pressure
by
Classes
Temperature
(˚F)
A 216
WCB (a)
A 352
LCB (d)
A 216 WCC (a)
A 352 LC2 (d)
A 352 LC3 (d)
A 352 LCC (e)
A 217
WC1 (b)
A 352
LC1 (d)
A 217
WC4 (h)
A 217
WC5 (i)
A 217
WC6 (j)
A 217
WC9 (j)
A 217
C5
A 217
C12
ENGINEERING
600 LB.
400 LB.
Working
Pressure
PSI inch
Pressure Drop per 1,000 Feet of Schedule 40 Ste Pipe,
in pounds
perinsquare
282
A 351
CF3 (f)
A 351
CF8
A 351
CF3M (g)
A 351
CF8M
A 351
CF8C
A 351
CN7M (l)
Pressure Drop per 1,000 Feet of Schedule 40
-20 to 100
200
300
400
500
990
900
875
845
800
925
875
850
825
775
1000
1000
970
940
885
925
905
870
855
830
1000
1000
970
940
885
1000
950
895
880
855
1000
955
905
865
855
1000
1000
970
940
885
1000
1000
970
940
885
960
800
705
630
585
960
825
745
685
635
960
850
785
740
690
800
740
700
640
625
600
650
700
750
800
730
715
710
670
550
710
695
690
630
520
805
785
755
670
550
805
785
755
710
675
805
785
755
710
675
805
785
755
710
675
805
785
755
710
675
805
785
755
710
675
805
785
755
710
675
555
545
540
530
525
600
590
575
565
555
655
640
625
615
610
605
600
595
585
575
850
900
950
1000
1050
355
230
140
70
–
355
230
140
70
–
355
230
140
70
–
650
600
375
220
–
650
600
460
285
250
650
600
505
300
185
650
600
505
355
265
585
470
350
255
190
650
600
495
390
250
520
510
500
430
410
540
525
515
485
480
590
575
515
485
480
–
–
–
–
–
1100
1150
1200
1250
1300
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
130
70
45
–
–
150
140
75
–
–
140
90
60
–
–
150
100
70
–
–
345
260
205
145
110
430
365
275
245
185
430
365
230
165
125
–
–
–
–
–
1350
1400
1450
1500
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
85
65
45
30
140
100
80
55
90
70
55
45
–
–
–
–
-20 to 100
200
300
400
500
1480
1350
1315
1270
1200
1390
1315
1275
1235
1165
1500
1500
1455
1410
1330
1390
1360
1305
1280
1245
1500
1500
1455
1410
1330
1500
1425
1345
1315
1285
1500
1430
1355
1295
1280
1500
1500
1455
1410
1330
1500
1500
1455
1410
1330
1440
1200
1055
940
875
1440
1240
1120
1030
955
1440
1270
1175
1110
1035
1200
1115
1045
960
935
600
650
700
750
800
1095
1075
1065
1010
825
1065
1045
1035
945
780
1210
1175
1135
1010
825
1210
1175
1135
1065
1015
1210
1175
1135
1065
1015
1210
1175
1135
1065
1015
1210
1175
1135
1065
1015
1210
1175
1135
1065
1015
1210
1175
1135
1065
1015
830
815
805
795
790
905
890
865
845
830
985
960
935
920
910
910
900
890
880
865
850
900
950
1000
1050
535
345
205
105
–
535
345
205
105
–
535
345
205
105
–
975
900
560
330
–
975
900
685
425
380
975
900
755
445
275
975
900
755
535
400
880
705
520
385
280
975
900
740
585
380
780
770
750
645
620
810
790
775
725
720
890
865
775
725
720
–
–
–
–
–
1100
1150
1200
1250
1300
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
190
105
70
–
–
225
205
110
–
–
205
140
90
–
–
225
150
105
–
–
515
390
310
220
165
645
550
410
365
275
645
550
345
245
185
–
–
–
–
–
1350
1400
1450
1500
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
125
95
70
50
205
150
115
85
135
105
80
70
–
–
–
–
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PIPE, FITTING & FLANGE SPECIFICATIONS
STANDARD CLASS PRESSURE-TEMPERATURE RATINGS ANSI/ASME B16.34 (continued)
Working
Pressure
by
Classes
Temperature
(˚F)
A 216
WCB (a)
A 352
LCB (d)
A 216 WCC (a)
A 352 LC2 (d)
A 352 LC3 (d)
A 352 LCC (e)
A 217
WC1 (b)
A 352
LC1 (d)
A 217
WC4 (h)
A 217
WC5 (i)
A 217
WC6 (j)
A 217
WC9 (j)
A 217
C5
A 217
C12
A 351
CF3 (f)
A 351
CF8
A 351
CF3M (g)
A 351
CF8M
A 351
CF8C
A 351
CN7M (l)
1500 LB.
900 LB.
in PSI
Pressure Drop per 1,000 Feet of Schedule 40 SteelWorking
Pipe, inPressure
pounds per
square inch Pressure Drop per 1,000 Feet of Schedule 40
2220
2025
1970
1900
1795
2085
1970
1915
1850
1745
2250
2250
2185
2115
1995
2085
2035
1955
1920
1865
2250
2250
2185
2115
1995
2250
2135
2020
1975
1925
2250
2150
2030
1945
1920
2250
2250
2185
2115
1995
2250
2250
2185
2115
1995
2160
1800
1585
1410
1310
2160
1860
1680
1540
1435
2160
1910
1765
1665
1555
1800
1670
1570
1445
1405
600
650
700
750
800
1640
1610
1600
1510
1235
1600
1570
1555
1420
1175
1815
1765
1705
1510
1235
1815
1765
1705
1595
1525
1815
1765
1705
1595
1525
1815
1765
1705
1595
1525
1815
1765
1705
1595
1525
1815
1765
1705
1595
1490
1815
1765
1705
1595
1525
1245
1225
1210
1195
1180
1355
1330
1295
1270
1245
1475
1440
1405
1385
1370
1365
1350
1335
1320
1295
850
900
950
1000
1050
805
515
310
155
–
805
515
310
155
–
805
515
310
155
–
1460
1350
845
495
–
1460
1350
1030
640
565
1460
1350
1130
670
410
1460
1350
1130
805
595
1315
1060
780
575
420
1460
1350
1110
875
565
1165
1150
1125
965
925
1215
1180
1160
1090
1080
1330
1295
1160
1090
1080
–
–
–
–
–
1100
1150
1200
1250
1300
1350
1400
1450
1500
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
290
155
105
–
–
–
–
–
–
340
310
165
–
–
–
–
–
–
310
205
135
–
–
–
–
–
–
340
225
155
–
–
–
–
–
–
770
585
465
330
245
185
145
105
70
965
825
620
545
410
310
225
175
125
965
825
515
370
280
205
155
125
105
–
–
–
–
–
–
–
–
–
-20 to 100
200
300
400
500
3705
3375
3280
3170
2995
3470
3280
3190
3085
2910
3750
3750
3640
3530
3325
3470
3395
3260
3200
3105
3750
3750
3640
3530
3325
3750
3560
3365
3290
3210
3750
3580
3385
3240
3200
3750
3750
3640
3530
3325
3750
3750
3640
3530
3325
3600
3000
2640
2350
2185
3600
3095
2795
2570
2390
3600
3180
2940
2770
2590
3000
2785
2615
2405
2340
600
650
700
750
800
2735
2685
2665
2520
2060
2665
2615
2590
2365
1955
3025
2940
2840
2520
2060
3025
2940
2840
2660
2540
3025
2940
2840
2660
2540
3025
2940
2840
2660
2540
3025
2940
2840
2660
2540
3025
2940
2840
2660
2485
3025
2940
2840
2660
2540
2075
2040
2015
1990
1970
2255
2220
2160
2110
2075
2460
2400
2340
2305
2280
2275
2250
2225
2200
2160
850
900
950
1000
1050
1340
860
515
260
–
1340
860
515
260
–
1340
860
515
260
–
2435
2245
1405
825
–
2435
2245
1715
1065
945
2435
2245
1885
1115
684
2435
2245
1885
1340
995
2195
1765
1305
960
705
2435
2245
1850
1460
945
1945
1920
1870
1610
1545
2030
1970
1930
1820
1800
2220
2160
1930
1820
1800
–
–
–
–
–
1100
1150
1200
1250
1300
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
480
260
170
–
–
565
515
275
–
–
515
345
225
–
–
565
380
260
–
–
1285
980
770
550
410
1610
1370
1030
910
685
1610
1370
855
615
465
–
–
–
–
–
1350
1400
1450
1500
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
310
240
170
120
515
380
290
205
345
255
205
170
–
–
–
–
Note: For welding end valves only.
(1) Flanged end ratings terminate at 1000 ˚F.
Footnotes:
a)
b)
d)
e)
f)
g)
h)
i)
j)
l)
Permissible, but not recommended for prolonged usage above about 800 ˚F.
Permissible, but not recommended for prolonged usage above about 850 ˚F.
Not to be used over 650 ˚F.
Not to be used over 700 ˚F.
Not to be used over 800 ˚F.
Not to be used over 850 ˚F.
Not to be used over 1000 ˚F.
Not to be used over 1050 ˚F.
Not to be used over 1100 ˚F.
Ratings apply for 300 ˚F and lower.
283
ENGINEERING
-20 to 100
200
300
400
500
STEAM TRAP APPLICATIONS
INTRODUCTION TO STEAM TRAPS
WHAT IS A STEAM TRAP AND WHAT DOES IT DO?
A steam trap is an automatic valve that allows condensate, air and other non-condensable gases to be discharged from
the steam system while holding or trapping the steam in the system. Several different types of steam trap technologies
exist to accomplish this extremely critical and necessary task. Explained below are why steam traps are required, their
primary applications, how each type functions, their advantages and disadvantages, and when each should be applied.
WHY ARE STEAM TRAPS REQUIRED?
For any steam system to operate properly a method must used to remove the condensate, air and other non-condensable
gases such as carbon dioxide from the steam.
CONDENSATE:
When steam releases its heat energy in a heat exchanger making hot water, from a radiator heating a room, from a steam
pipe transferring steam or from any process application, the steam reverts back to water. This water, technically referred to
as condensate, must be separated from the steam and removed from the system or the system would back up with water.
The removal of condensate from steam is considered the primary function of the steam trap.
AIR:
Air exists in all steam pipes prior to system start-up when the system is cold. This air must be bled out of the piping system
so that the steam can enter and eventually reach the designated process applications. If the air is not removed, the steam
will effectively be blocked from entering the steam pipes by the residual air. In addition to blocking the steam, air acts as an
insulator to heat transfer. Even after the system is filled with steam, small amounts of air can re-enter the system thru
various paths such as boiler water make-up systems and vacuum breakers.
NON-CONDENSABLE GASES:
Gases other than air such as carbon dioxide exist inside steam systems. These non-condensable gases must also be
separated from the steam and removed from the system for all processes to operate properly. In addition to inhibiting
steam flow and proper heat transfer, carbon dioxide can be very corrosive to components in the system.
STEAM TRAP GENERAL APPLICATION CATEGORIES:
DRIP APPLICATIONS:
Drip applications are by far the most common application for steam traps. This application refers to removing the
condensate that forms in steam lines when steam loses its heat energy due to radiation losses. Traps used in these
applications are referred to as drip traps. Generally speaking, traps used for these applications require relatively
small condensate capacities and don’t normally need to discharge large amounts of air. (Air removal is the primary
function of air vents and process traps located throughout the system.) The most common trap choices for drip
applications are thermodynamic for line pressures over 30 PSIG, and float & thermostatic for line pressures up
to 30 PSIG. Inverted bucket traps are also commonly used for drip trap applications due to their ability to handle
large amounts of dirt and scale often found in this type of application.
PROCESS APPLICATIONS:
Process trap applications refer to removing condensate and air directly from a specific heat transfer process such as a heat
exchanger that could be making hot water or a radiator heating a room. Traps used in these applications are referred to as
process traps. Generally speaking, traps used for process applications require larger condensate handling capability and
also need to be able to discharge large amounts of air. The most common trap choices for process applications are float
& thermostatic traps and thermostatic traps. Both are known for their excellent condensate and air handling capabilities.
In contrast, thermodynamic traps and inverted bucket traps, which have poor air handling ability, would normally make a
poor choice for process applications.
ENGINEERING
TRACING APPLICATIONS:
Steam tracing refers to using steam to indirectly elevate the temperature of a product using jacketed pipes or tubing
filled with steam. A typical application would be wrapping a high viscosity oil pipeline with steam tubing. The steam inside
the tubing heats the oil to lower its viscosity, allowing it to flow easily thru the pipeline. Similar to any steam applications,
a steam trap must be used on the end of the steam tubing to discharge unwanted condensate. Steam traps used in these
applications are referred to as tracer traps. The most common trap choice for tracing applications is the thermostatic type.
284
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STEAM TRAP APPLICATIONS
THERMOSTATIC & BI-METALLIC STEAM TRAPS
Thermostatic & Bi-Metallic steam traps operate under the
direct influence of increasing or decreasing temperature
within the body of the trap. These two different types of
steam traps operate differently to suit specific applications.
Figure 1:
A) AIR (When air, which is cooler than steam, is present,
the bellows is retracted and the seat is open,
allowing large quantities of air to be discharged.)
THERMOSTATIC STEAM TRAPS
The bellows type thermostatic trap uses a fluid-filled
thermal element (bellows) that operates under the principle
of thermal expansion and contraction. The fluid vaporizes
and expands as the temperature increases, causing the
bellows to close the valve. As the temperature decreases,
the fluid condenses and contracts, causing the bellows to
open the valve. These traps provide excellent air handling
capability and are used for drip, tracing and process
applications. The main advantage of the thermal element is
that on start-up loads, the trap is in the open position, allowing
air and condensate to be rapidly removed from the system.
Watson McDaniel thermal element traps offer wide operating
pressure ranges, rugged welded stainless steel bellows,
and various orifice sizes, making them a great choice for
a majority of applications.
B) CONDENSATE (When condensate, which is cooler
than steam, is present, the bellows is retracted
and the seat is open, allowing condensate to be
discharged.)
VALVE
BELLOWS
VALVE
SEAT
Operation:
The operation of the thermal element is governed by the
volumetric thermal expansion of the fluid inside the bellows
as it changes states. There is no adjustment required for this
trap as the fluid inside the bellows is chosen for its quick
response to the change in temperature between steam and
condensate at various pressures. The bellows is designed to
follow the steam saturation curve, always discharging
condensate a few degrees cooler than the steam temperature.
During start-up, when the system is cold, the bellows is
contracted and the valve plug is lifted off of the seat allowing
air and condensate to be discharged from the system
(Figures 1A & 1B). Throughout warm-up, air and condensate
are allowed to escape from the system through the open orifice
in the trap. As hot steam approaches the thermal element in
the trap, the fluid inside the bellows vaporizes and expands,
closing the valve tightly (Figure 1C). As long as steam is
present, the valve will remain closed. Only when subcooled
condensate or air is present will the valve open. The bellows
will immediately expand and close the valve upon the
reintroduction of steam.
C) STEAM (When steam reaches the trap, the bellows
expands, which closes off the seat and prevents
the steam from escaping.)
Air
Condensate
Steam
ENGINEERING
BI-METALLIC STEAM TRAPS
The bi-metallic steam traps operate under the principle of thermal expansion of metals. Two dissimilar metals
are joined into a series of discs and upon heating will deflect to provide movement to close off the valve. These
traps are primarily used in steam tracing because of their ability to adjust condensate discharge temperature which
may be desirable on certain tracing applications.
When cold condensate and air are present, the bimetallic trap remains open as the flow of air and condensate
discharges from the system. When steam arrives to the trap, the discs deflect and pushes the plug onto the seat.
The temperature at which the valve closes can be adjusted by turning a set screw located on the top of the valve.
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285
STEAM TRAP APPLICATIONS
MECHANICAL STEAM TRAPS
Mechanical steam traps operate by use of a float device connected to a mechanical linkage that reacts upon changes in volume
or fluid density. There are two main types of mechanical traps: the float & thermostatic (F&T) trap and the inverted bucket trap.
FLOAT & THERMOSTATIC TRAPS
The float & thermostatic trap uses a float connected by a linkage to the valve plug to discharge condensate from the
system. In addition, F&T traps contain a thermostatic air vent to allow the discharge of air from the system. For this
reason, these traps have excellent air removal capability, which is advantageous during system start-up when large
amounts of air are present in the system. Float & thermostatic steam traps are generally the primary selection for
drainage of process heat transfer equipment.
Operation:
At start-up, air and condensate enter the steam trap. The air will be discharged through the open thermostatic air vent
(Figure 2A). As the condensate level in the trap rises, it lifts the float which opens the valve to allow the discharge of
condensate. When steam enters the trap, the thermostatic element expands and closes the air vent, preventing the steam
from escaping (Figure 2B). As the condensate discharges through the seat orifice, the float lowers and shuts the valve
(Figure 2C). The float is designed to shut the valve with a level of condensate above the seating orifice to prevent loss of
any steam. The float modulates to maintain a constant equilibrium between the incoming and discharging condensate.
Due to the balance of forces required between the incoming pressure and internal trap components, several orifice sizes
are offered to accommodate various differential pressure ranges. These traps can be fitted with a steam lock release
(SLR) orifice for high pressure and high temperature applications that exceed the pressure capability of a thermostatic air
vent.
Figure 2:
Thermostatic Air
Vent (Open)
(A)
A) When cold air enters the trap during
Float
Air
start-up, the thermostatic air vent is
open, allowing the discharge of large
quantities of air from the system.
B) When condensate enters the trap,
the float lifts, opening the valve,
and discharges the condensate.
C) When steam is present, and no
condensate is entering the trap,
the valve and thermostatic air vent
remain closed, trapping steam in
the system.
Condensate
Valve (Closed)
(B)
Thermostatic Air
Vent (Closed)
(C)
Thermostatic Air
Vent (Closed)
Float
Steam
Float
ENGINEERING
Elevated
Condensate
Level
Steam
Condensate level
always remains
above valve
seat to prevent
loss of steam
Condensate
Condensate
Valve (Open)
286
Valve (Closed)
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www.watsonmcdaniel.com
STEAM TRAP APPLICATIONS
MECHANICAL STEAM TRAPS
(continued)
INVERTED BUCKET TRAPS
The inverted bucket trap uses an inverted bucket as a float device connected by a linkage to the valve plug. The varying
densities between condensate and steam are used to create a buoyancy force on the bucket to open and close the valve.
These traps are primarily used in drip applications on stream mains and steam supply lines. They are generally not used
in process applications due to their poor air handling capability. Bucket traps are extremely rugged and resistant to
waterhammer and also resistant to any dirt and scale that may be present in the system.
Operation:
Upon start-up, the trap fills with condensate. Due to the weight of the bucket, it rests on the bottom of the trap keeping
the valve open to let condensate flow out (Figure 3A). In the top of the bucket there is a small orifice (bleed hole) to allow
air to escape the bucket and exit through the outlet (Figure 3B). When steam arrives through the inlet of the trap, it fills the
inverted bucket. The density differential between the steam and the condensate causes the bucket to become buoyant and
rise to the top of the trap, closing the valve (Figure 3C). As steam condenses and/or is bled through the small orifice, the
bucket loses buoyancy as it becomes filled with condensate; this causes it to sink to the bottom of the trap. This opens the
valve allowing condensate to escape from the system (Figure 3A). The small orifice in the top of the bucket is imperative
for venting air from the system; however, it will also bleed steam once the air has been completely removed. The bucket
trap must contain a certain amount of water (prime) in order to operate. Without this prime, the bucket will not be able to
float and rest on the bottom of the trap, keeping the valve in the open position, allowing steam to escape (Figure 3D).
Due to the balance of forces required between the incoming pressure and internal trap components, several orifice sizes
are offered to accommodate various differential pressure ranges.
Figure 3:
(A) Discharging Condensate
A) With condensate completely
(B) Expelling Air
Bleed Hole
Valve
(Open)
Valve
(Open)
filling the trap, the bucket is
in the down position with
the valve open, allowing
condensate to be discharged.
B) Small amounts of air will
pass thru the bleed hole
on top of the bucket and be
discharged. (Note: Large
amounts of air will lift the
bucket and close off the trap,
temporarily air locking
the system.)
Inverted
Bucket
C) When steam enters the trap,
the inverted bucket will fill with
steam and float, closing off
the valve, preventing steam
from escaping.
(C) Trapping Steam
(D) Potential Failure Mode
Valve
(Closed)
Bleed Hole
Valve
(Open)
D) Potential Failure Mode:
Bucket traps must maintain
a water prime to function
properly. If the prime is lost,
the bucket will remain in the
down position with the valve
open, and live steam will be
discharged from the system.
ENGINEERING
Air
Condensate
Steam
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287
STEAM TRAP APPLICATIONS
THERMODYNAMIC STEAM TRAPS
THERMODYNAMIC STEAM TRAPS
Thermodynamic steam traps operate in a cyclic on/off process using the thermodynamic properties of flash steam as
it flows through the trap. Thermodynamic traps use only one moving part, the valve disc, which allows condensate to
escape when present and closes tightly upon the arrival of steam. These traps have an inherently rugged design and
are commonly used as drip traps on steam mains and supply lines. Their solid construction and single moving part
make them resistant to waterhammer and are freezeproof when installed vertically. Thermodynamic traps will only
discharge small amounts of air and therefore are typically not used in process applications.
Operation:
As inlet pressure to the trap increases, the disc lifts off the seat and allows the unwanted condensate to escape through
the peripheral outlet surrounding the inlet (Figure 4A). As hot condensate reaches the disc chamber, it creates flash
steam in the chamber (Figure 4B). This flash steam travels at high velocity from the inlet to the outlets, creating a low
pressure area under the disc. Some of the flash steam bypasses the disc and enters the top of the chamber, creating
a buildup of pressure above the disc. This differential pressure causes the disc to close against the seat, trapping the
steam (Figure 4C). The flash steam above the disc is the only force opposing the pressure from the inlet condensate,
keeping the valve closed. As heat transfer takes place in the upper chamber, the flash steam condenses and the
pressure above the disc reduces. When the pressure above the disc falls to a point that is less than the pressure of
the incoming condensate, the disc will lift again and repeat the cycle (Figure 4A). Cycle time is dependent on steam
temperature, and more importantly, ambient temperature outside the trap. Since the amount of time the valve is closed
is primarily dependent on the heat transfer from the flash steam to the ambient environment, frequent cycling of the
valve can occur in cold or wet environments. Applying an insulating cap over the cover of the trap will reduce
the cycle rate.
Figure 4:
(A) Valve Disc (Open)
(B) Valve Disc (Starting to Close)
Disc
(Closing)
Peripheral
Outlet
Inlet
A) When condensate is present,
trap is in the full open position
discharging condensate.
B) When steam enters the trap,
the disc begins to close with
the formation of flash steam
above the disc.
C) Trap will remain closed,
trapping steam in the system
until the flash steam above
the disc condenses, due to
ambient heat loss.
D) Potential Failure Mode:
(C) Valve Disc (Closed)
(D) Potential Failure Mode
Control
Chamber
Valve
Disc
not
properly
seated
A possible failure mode for
thermodynamic traps is the
disc not seating properly due
to dirt or scale on the flat
seating surface, causing
the loss of steam.
ENGINEERING
Flash Steam
Condensate
Steam
288
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STEAM TRAP APPLICATIONS
STEAM TRAP SELECTION & SIZING
Selection & Sizing of Steam Traps & Safety Factors:
The type of steam trap to choose for a particular application can depend on several variables, making it difficult to
effectively cover every factor involved in making a proper decision. However, the guidelines below should assist you
in making a proper and logical selection.
For any type of process applications, such as making hot water in a heat exchanger, we generally want a steam
trap that is very good at discharging air as well as condensate. Therefore, a float & thermostatic (F&T) trap is typically
the first choice of steam trap. However, thermostatic steam traps, such as the WT3000 and WT4000, which have been
designed for process applications, also do an excellent job and are very commonly used. Both types of traps will
generally satisfy most process applications.
For drip applications, such as draining steam mains over 30 PSIG, thermodynamic traps are normally considered the
first choice. In drip applications it’s not as critical of a requirement to remove air from the system since this is normally
the function of separate thermostatic air vents placed in strategic places in the piping system and the process traps.
However, for steam systems up to 30 PSIG, F&T traps are normally recommended. For steam systems that are known
to contain large amounts of scale and dirt, bucket traps are recommended because they are less prone than
thermodynamic and F&T traps to failure from this type of situation.
For tracing applications, the most commonly used steam trap is the thermostatic type. Thermostatic traps are the
most thermally efficient of all traps and lend themselves perfectly to this type of application.
The capacity of steam traps:
The capacity charts for steam traps give the maximum condensate flow in pounds per hour at a given pressure or
pressure differential. When selecting the proper size of steam trap, the normal condensate rate (load) should be known
and then multiplied by an appropriate safety factor.
Why safety factors need to be considered:
A safety factor is required because the amount of condensate generated and the steam pressure are not always
constant in any steam system. For example, when the system is cold and steam first starts to flow thru the pipes,
steam is condensing very quickly because of the massive heat required to heat all the cold surfaces as well as to
overcome the radiation losses. To compound this issue further, the steam pressure in the system, which is being relied
upon to push the condensate thru the steam trap into the return line, is extremely low before the system comes up to full
pressure. Therefore, we have a condition in which the condensate in the system is being generated at a maximum rate
and the steam pressure used to push the condensate out of the system, is at a minimum. If we sized the traps for the
normal running loads and normal system pressures, these traps would be severely undersized for the start-up condition.
If supervised start-ups of the steam system are being done then sizing the steam traps for start-up conditions may be
less of an issue. When performing a supervised start-up of a cold system, the condensate drain valves that are
strategically placed throughout the system are manually opened. This helps drain the massive amount of condensate
that is generated by the cold piping system, relying less on the steam traps. Therefore, the steam traps selected for
the system can be more properly sized for the actual normal running load if supervised start-ups are performed.
Recommended Steam Trap Selection & Safety Factors for Sizing:
APPLICATIONS
PRIMARY TRAP CHOICE
SAFETY FACTORS & SPECIAL NOTES
Drip Trap on Steam Mains < 30 PSIG
Drip Trap on Steam Mains > 30 PSIG
Float & Thermostatic
Thermodynamic
Trap should be sized for 2X normal capacity at
full differential pressure
Steam Tracing, Non-critical
Thermostatic
Steam Tracing, Critical
Thermodynamic
Float & Thermostatic
For steam systems with constant pressure:
Trap should be sized for 2X normal capacity at
full differential pressure.
For steam systems with modulating pressure:
When draining condensate from heat exchangers
operating up to 30 PSIG, steam traps should be
sized for full capacity at 1/2 PSI differential pressure.
When draining condensate from heat exchangers
operating at over 30 PSIG, steam trap should be
sized for 2.5X normal condensate load at full
differential pressure.
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289
ENGINEERING
Process applications up to 450 PSIG
Thermostatic traps are suitable for the majority of
steam tracing applications; for critical steam tracing
applications, where no back-up of condensate can
be tolerated, thermodynamic traps should be used.
STEAM TRAP APPLICATIONS
DRIP LEG DESIGN
PURPOSE:
Drip Legs are used for removing entrained moisture from steam transmission and distribution
lines to ensure high quality steam for use in various plant applications, while also preventing
damaging and dangerous waterhammer.
OPERATION:
As steam travels at high velocity through piping, moisture forms as the result of piping heat losses
and/or improper boiler control resulting in condensate carryover. Drip legs are therefore located at
points where condensate may accumulate to allow for drainage by gravity down to a steam trap for
proper discharge from the system. Since condensate drains by gravity, drip legs must be located
on the bottom of piping and designed with diameters large enough to promote collection.
INSTALLATION GUIDELINES:
(see Figure 5)
For drainage of steam transmission and distribution lines, drip legs should be located at bends in piping
(direction changes), low points, end of line, and in straight run of piping every 200 feet.
z
For protection of equipment such as regulators and control valves, drip legs should be installed directly
ahead of the regulating or control valve line.
z
Proper steam trap selection for drip applications is dependent upon application requirements, such as pressure,
number of and distance between installed steam traps, ambient conditions, start-up requirements, etc. A commonly
accepted practice is to use float & thermostatic (F&T) steam traps for low pressure steam systems up to 30 PSIG,
and thermodynamic steam traps for steam pressures over 30 PSIG.
z
Because condensate drainage from steam systems is dependent upon gravity, drip leg diameter is critical
for optimum removal – larger is better. Collection leg diameter (DL) is recommended to be the same size as
the steam main (D), up to 4”. For steam mains above 4”, the collection leg diameter may be half the diameter
of the main, but not less than 4”. The length (L) of the drip leg for systems with automatic start-up should be a
minimum of 28” to provide approximately 1 PSI head pressure. The length (L) of the drip leg for systems with
supervised start-up should be 1.5 x DL, but not less than 8”.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
A drain valve is included at the bottom of the collection leg for manual discharge of condensate during
supervised start-up. The drain valve should be located at least 6” below the steam trap line.
z
An isolation valve and strainer should be installed before the steam trap. The isolation valve simplifies
maintenance of the trap and the strainer protects the trap from any dirt, debris or scale in the line.
ENGINEERING
z
290
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STEAM TRAP APPLICATIONS
DRIP LEG DESIGN
DRIP LEG DESIGN CRITERIA:
1) Locate prior to valves, bends in pipe (direction changes), low
points, end of line and straight piping runs (max. 200 ft. apart).
2) Diameter:
• Drip leg diameter (DL ) to be equal to steam main diameter (D)
for steam main sizes up to 4”
• Drip leg diameter (DL ) may be half the steam main diameter (D)
for steam main sizes over 4”, but not less than 4”
3) Length (L):
• For systems with automatic start-up, L to be 28” minimum
(= 1 PSI minimum head pressure)
• For systems with supervised start-up, L to be 1.5 x DL, but
not less than 8”
Figure 5:
D
L
DL
STEAM
TRAP
TO
CONDENSATE
RETURN
(SEE SELECTION
GUIDELINES)
T
6
MIN.
ISOLATION
VALVE
STRAINER
DRAIN
VALVE
PROPER DRIP LEG DESIGN
D
D
PRESSURE
REGULATING
VALVE
DL
L
GATE
VALVE
STRAINER
L
DL
STEAM
TRAP
STEAM
TRAP
T
6
MIN.
ISOLATION
VALVE
STRAINER
TO
CONDENSATE
RETURN
T
6
MIN.
ISOLATION
VALVE
(SEE SELECTION
GUIDELINES)
STRAINER
TO
CONDENSATE
RETURN
(SEE SELECTION
GUIDELINES)
DRAIN
VALVE
DRAIN
VALVE
DRIP LEG AT
ABRUPT CHANGES IN DIRECTION
OR ELEVATION
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ENGINEERING
DRIP LEG BEFORE
REGULATING OR CONTROL VALVES
291
STEAM TRAP APPLICATIONS
PROCESS STEAM TRAP – GRAVITY DRAINAGE OF HEAT TRANSFER EQUIPMENT
PURPOSE:
For removing condensate from below steam heat transfer equipment to ensure optimum
heating under various load conditions.
OPERATION:
Steam used to heat product such as water in a heat exchanger condenses to liquid after passing
though the heat exchanger and releasing its heating energy. To ensure optimum heating, this
condensate is removed through an adequately sized drip leg and steam trap properly selected for
the application and installed below the equipment. A Float and Thermostatic (F&T) steam trap is
often an appropriate choice due to its modulating discharge and air venting capability.
INSTALLATION GUIDELINES:
(see Figure 6)
Selection and sizing of the process steam trap is critical to proper operation. A safety load factor (SLF) is
applied to accommodate load variations and surges, as well as high start-up requirements. Consult appropriate
sections of this catalog or the factory for guidelines regarding proper process steam trap selection and sizing.
z
The collecting leg to the process trap should be no smaller than the designed condensate outlet of the heat
transfer equipment. Note that some steam trap technologies such as thermostatic require extended distance
between the heat exchanger and steam trap to allow for back-up of subcooled condensate.
z
The process trap should be located at least 2.3 feet (28”) below the condensate outlet of the heat exchanger
to provide a minimum of 1 PSI head pressure.
z
The drip leg and steam trap prior to the regulating valve protect the valve from condensate, as well as ensure
the best quality steam for heat transfer. Note the take-off from the top of the steam main to avoid condensate
that would collect on the bottom of the main piping.
z
The vacuum breaker and auxiliary air vent located at the top of the heat exchanger vessel promotes proper
drainage and optimum heat transfer. The vacuum breaker allows system equalization with atmospheric air to
allow gravity condensate drainage when vacuum is formed from condensing steam. The air vent improves
heat-up times and overall heat transfer by expelling accumulated air on start-up.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
An isolation valve and strainer should be installed before any steam trap. The isolation valve simplifies
maintenance of the trap and the strainer protects the trap from any dirt, debris or scale in the line.
ENGINEERING
z
292
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STEAM TRAP APPLICATIONS
PROCESS STEAM TRAP – GRAVITY DRAINAGE OF HEAT TRANSFER EQUIPMENT
Figure 6:
STEAM MAIN
HDPT
REGULATOR
WVBSS
GATE
VALVE
VACUUM
BREAKER
AV2000
AIR VENT
STRAINER
TEMPERATURE
SENSING
BULB
ISOLATION
VALVE
HEAT
EXCHANGER
F&T
TRAP
HOT
WATER
OUT
STRAINER
COLD
WATER
IN
DRAIN
VALVE
F&T
TRAP
ISOLATION
VALVE
MINIMUM
OF
2.3 Feet
FOR
MINIMUM
HEAD
PRESSURE
OF
1 PSI
STRAINER
DRAIN
VALVE
SHELL AND TUBE HEAT EXCHANGER
ENGINEERING
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www.watsonmcdaniel.com
293
STEAM TRAP APPLICATIONS
PROCESS STEAM TRAP – SYPHON DRAINAGE OF HEAT TRANSFER EQUIPMENT
PURPOSE:
For removing condensate from steam heat transfer equipment when the steam trap is to be
installed above the point where condensate will collect.
OPERATION:
When steam is used to heat liquid in a tank with a submerged coil or a rotary drum dryer, gravity
drainage to the steam trap is not possible. For these applications, it may be necessary to install the
steam trap above the drain point of the equipment by creating a syphon lift to allow for proper
condensate drainage.
INSTALLATION GUIDELINES:
(see Figure 7)
There are two critical requirements to ensure proper operation of syphon lift process drainage systems:
A water seal lift fitting and a steam trap with a function to prevent steam lock (often referred to as Steam
Lock Release or SLR).
z
The lift fitting on a submerged coil provides a water seal to stop steam from pushing past the condensate
and reaching the steam trap, preventing a vapor-lock condition of the trap.
z
Steam Lock Release (SLR) is provided on the steam trap to ensure the syphon lift remains continuous by
preventing steam from becoming trapped – or locked – between the cavity of the steam trap and incoming
condensate. The SLR function allows any small portion of trapped steam to be automatically removed from
the system, allowing continuous drainage.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
An isolation valve and strainer should be installed before any steam trap. The isolation valve simplifies
maintenance of the trap and the strainer protects the trap from any dirt, debris or scale in the line.
ENGINEERING
z
294
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www.watsonmcdaniel.com
STEAM TRAP APPLICATIONS
PROCESS STEAM TRAP – SYPHON DRAINAGE OF HEAT TRANSFER EQUIPMENT
Figure 7:
ISOLATION
VALVE
F&T
TRAP
W/ SLR
ISOLATION
VALVE
STEAM
STRAINER
TO ATMOSPHERE
OR CONDENSATE
RETURN
WATER SEAL
LIFT FITTING
SUBMERGED COIL FOR HEATING LIQUID
ISOLATION
VALVE
F&T
TRAP
W/ SLR
STEAM
STRAINER
ENGINEERING
TO
CONDENSATE
RETURN
ROTARY DRUM DRYER
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295
REGULATING VALVE APPLICATIONS
GENERAL REGULATOR APPLICATION & INSTALLATION NOTES
Regulator Application & Installation Notes
The following are considerations for all steam regulator installations, as system operation is dependent upon
proper design, installation, start-up and maintenance procedures:
z
Inlet & Outlet Pipe Sizing
Improperly sized piping can contribute to erratic
control and excessive noise in a steam system.
Make certain inlet and outlet piping to the regulator
is adequately sized for the flow, velocity and
pressure requirements.
2-3 SIZES
LARGER THAN
REGULATOR
OUTLET PORT
1-2 SIZES
LARGER THAN
REGULATOR
INLET PORT
RULE OF THUMB:
Inlet piping is typically 1-2 sizes larger and outlet
piping 2-3 sizes larger than the connection ports
of a properly sized regulator.
REGULATOR
z
Straight Run of Pipe Before and After the Valve
Pipe fittings, bends and other accessories contribute
to fluid turbulence in a system which can result in
erratic control. To limit this and ensure optimum
system operation, follow recommended guidelines
for minimum straight run lengths of pipe before and
after a regulator.
Note: Any isolation valves or pipeline accessories
should be full-ported.
ENGINEERING
z
Reducer Selection
Concentric pipe reducers should be avoided
on the inlet side of regulators as they can allow
entrained condensate to collect, potentially
leading to damaging and dangerous waterhammer.
Therefore, when reducers are required in the steam
piping to accommodate properly sized valves and
pipes, use eccentric reducers on regulator inlets
and concentric or eccentric reducers on regulator
outlets.
10 PIPE
DIAMETERS
MINIMUM
10 PIPE
DIAMETERS
MINIMUM
CONCENTRIC REDUCER
STEAM
CONDENSATE
ACCUMULATED AT
LOW POINT
ECCENTRIC REDUCER
STEAM
296
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
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REGULATING VALVE APPLICATIONS
GENERAL REGULATOR APPLICATION & INSTALLATION NOTES
z
Strainers with Blowdown Valves
Regardless of any filters provided on a regulator, a
strainer with blowdown valve is recommended before
(upstream of) all regulator installations. Pipeline
debris and scale can damage internal valve
components, potentially leading to poor operation
and/or failure.
INLET
PORT
OUTLET
PORT
BLOWDOWN VALVE
BELOW STRAINER PORTS
Note: Consider strainer orientation to avoid
collection of condensate (see diagram).
BLOWDOWN VALVE ORIENTED AT
SAME ELEVATION AS STRAINER PORTS
TO AVOID CONDENSATE COLLECTION
z
Drip Legs & Steam Traps
To prevent condensate accumulated during
shutdown from possibly damaging the regulator or
piping at start-up, an adequately sized drip leg with
steam trap should be installed prior to all regulators.
This will also help protect the regulator during
normal operation.
Note: Separators may be necessary when boiler
carryover or “wet” steam is a concern.
DRIP
LEG
STEAM
TRAP
DRAIN VALVE
z
ENGINEERING
Proper Start-up & Maintenance Procedures
It is important to follow good start-up practices
to avoid operational complications and potential
system damage. Starting a steam system too
quickly or using an improper sequence may lead
to a potentially hazardous working environment.
Lack of system maintenance over time can also
contribute to this situation.
It is imperative to develop proper start-up and
maintenance procedures and train personnel on
the importance of following them at all times.
Consult equipment manufacturers for specific
guidelines, if necessary.
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297
REGULATING VALVE APPLICATIONS
SINGLE STAGE PRESSURE REDUCING STATION USING SPRING-LOADED PILOT
PURPOSE:
For reducing system inlet pressure to a constant outlet pressure.
OPERATION:
The pressure reducing valve (PRV) can be easily adjusted to set the desired outlet pressure and
modulates to maintain that pressure setting. The PRV requires no external power source.
INSTALLATION GUIDELINES:
(see Figure 8)
This example depicts a pilot-operated steam PRV, whereby an external sensing line is required to sense
downstream pressure. The end of the sensing line is placed away from the turbulent flow of the valve outlet.
This helps to improve accuracy of the set pressure. Set pressure is adjusted by turning a screw on the pilot
to increase or decrease compression on a balancing spring.
z
For optimum operation and service life, maintain recommended minimum piping straight runs before and
after the PRV. Inlet pipe diameters are typically 1-2 sizes larger and outlet pipe diameters 2-3 sizes larger
than the end connections of an appropriately sized PRV. The purpose of increasing the pipe size downstream
of the regulator is to keep the steam velocity constant on both sides of the regulator.
z
The pressure sensing line should slope downwards, away from the regulator, to prevent condensate from
entering the pilot.
z
Eccentric reducers are used on valve inlets to prevent accumulation of pipeline moisture which could become
entrained with high-velocity steam, possibly resulting in dangerous waterhammer.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider installing a properly sized bypass line with globe valve to provide continuous operation should
regulator maintenance be required.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
A safety relief valve (SRV) is appropriate where applicable codes dictate their requirement, or anywhere
protection of downstream piping and equipment from over-pressurization is desired. The SRV needs to handle
the complete volume of steam from the regulator and bypass loop. Consult the factory for appropriate SRV
sizing guidelines.
ENGINEERING
z
298
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www.watsonmcdaniel.com
299
CHECK
VALVE
TO
CONDENSATE
RETURN
ISOLATION
VALVE
TO
CONDENSATE
RETURN
ISOLATION
VALVE
STEAM
TRAP
CHECK
VALVE
STEAM
TRAP
TO
CONDENSATE
RETURN
10 PIPE
DIAMETERS MINIMUM
PRESSURE
SENSING
LINE
ISOLATION
VALVE
STEAM
TRAP
GATE
VALVE
CHECK
VALVE
DRAIN
VALVE
STEAM
OUTLET
SRV
ISOLATION
VALVE
STRAINER
DRIP
PAN
ELBOW
VENT
SINGLE STAGE PRESSURE REDUCING STATION USING SPRING-LOADED PILOT
(HD REGULATOR APPLICATIONS)
ISOLATION
VALVE
STRAINER
STRAINER
APPLICATION
DEPENDENT
ISOLATION
VALVE
REGULATOR
HDP
BYPASS
GLOBE
VALVE
ECCENTRIC
REDUCER CONCENTRIC
REDUCER
STRAINER
GATE
VALVE
10 PIPE
DIAMETERS MINIMUM
SEPARATOR
ENGINEERING
DRAIN
VALVE
STEAM
INLET
REGULATING VALVE APPLICATIONS
SINGLE STAGE PRESSURE REDUCING STATION USING SPRING-LOADED PILOT
Figure 8:
REGULATING VALVE APPLICATIONS
PRESSURE REDUCING STATION with AIR-LOADED PILOT for REMOTE INSTALLATIONS
PURPOSE:
For reducing system inlet pressure to a constant outlet pressure when valve is located in a remote
location and/or using air pressure for control is desired.
OPERATION:
This combination of HD regulating valve and A-pilot (HDA) allows air to be used to control outlet
pressure in lieu of the spring of a standard P-pilot. Using air allows for simple adjustment of control
pressure when valve is installed in a remote and/or difficult to access location.
INSTALLATION GUIDELINES:
(see Figure 9)
The desired set outlet pressure will determine the specific A-Pilot required as well as the air supply pressure
to attain the set pressure. Consult the appropriate section of this catalog or the factory for selection guidelines.
z
For optimum operation and service life, maintain recommended minimum piping straight runs before and
after the PRV. Inlet pipe diameters are typically 1-2 sizes larger and outlet pipe diameters 2-3 sizes larger
than the end connections of an appropriately sized PRV. The purpose of increasing the pipe size downstream
of the regulator is to keep the steam velocity constant on both sides of the regulator.
z
The pressure sensing line should slope downwards, away from the regulator, to prevent condensate from
entering the pilot.
z
Eccentric reducers are used on valve inlets to prevent accumulation of pipeline moisture which could become
entrained with high-velocity steam, possibly resulting in dangerous waterhammer.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required, as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider installing a properly sized bypass line with globe valve to provide continuous operation should
regulator maintenance be required.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
A safety relief valve (SRV) is appropriate where applicable codes dictate their requirement, or anywhere
protection of downstream piping and equipment from over-pressurization is desired. The SRV needs to handle
the complete volume of steam from the regulator and bypass loop. Consult the factory for appropriate SRV
sizing guidelines.
ENGINEERING
z
300
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www.watsonmcdaniel.com
301
CHECK
VALVE
CHECK
VALVE
ISOLATION
VALVE
CONDENSATE
RETURN
STEAM
TRAP TO
TO
CONDENSATE
RETURN
ISOLATION
VALVE
STEAM
TRAP
STRAINER
PRESSURE
SENSING LINE
HDA
REGULATOR
A
PILOT
BYPASS
GLOBE
VALVE
AIR
REGULATOR
PL2
TO
CONDENSATE
RETURN
CONTROL
AIR LINE
ISOLATION
VALVE
STEAM
TRAP
CHECK
VALVE
10 PIPE
DIAMETERS MINIMUM
GATE
VALVE
AIR
SUPPLY
DRAIN
VALVE
STEAM
OUTLET
SRV
ISOLATION
VALVE
STRAINER
DRIP
PAN
ELBOW
VENT
PRESSURE REDUCING STATION with AIR-LOADED PILOT for REMOTE INSTALLATIONS
(HD REGULATOR APPLICATIONS)
ISOLATION
VALVE
STRAINER
APPLICATION
DEPENDENT
ISOLATION
VALVE
GATE
VALVE
STRAINER
10 PIPE
DIAMETERS MINIMUM
SEPARATOR
ENGINEERING
DRAIN
VALVE
STEAM
INLET
REGULATING VALVE APPLICATIONS
PRESSURE REDUCING STATION with AIR-LOADED PILOT for REMOTE INSTALLATIONS
Figure 9:
REGULATING VALVE APPLICATIONS
TWO-STAGE (SERIES) PRESSURE REDUCING STATION
PURPOSE:
For reducing system inlet pressure to a constant outlet pressure when the pressure drop exceeds
the recommended operation of a single-stage pressure regulating valve (PRV).
OPERATION:
The 1st stage PRV reduces inlet pressure to an intermediate pressure. The 2nd stage PRV then
reduces pressure to the final outlet pressure. Individual valve setting and operation is the same
as for single-stage applications.
INSTALLATION GUIDELINES:
(see Figure 10)
This example depicts a two-stage (series) pilot-operated steam PRV pressure reducing station using HDP regulators.
An external sensing line is required to sense downstream pressure from each regulator. The end of each sensing
line is placed away from the turbulent flow at the valve outlet. This helps to improve accuracy of the set pressures.
Set pressure for each PRV is adjusted by turning a screw on the pilot to increase or decrease compression on a
balancing spring.
z
For optimum operation and service life, maintain recommended minimum piping straight runs before and
after the PRV. Inlet pipe diameters are typically 1-2 sizes larger and outlet pipe diameters 2-3 sizes larger
than the end connections of an appropriately sized PRV. The purpose of increasing the pipe size downstream
of the regulator is to keep the steam velocity constant on both sides of the regulator.
z
Each pressure sensing line should slope downwards, away from the regulator, to prevent condensate from
entering the pilot.
z
Eccentric reducers are used on valve inlets to prevent accumulation of pipeline moisture which could become
entrained with high-velocity steam, possibly resulting in dangerous waterhammer.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required, as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider installing a properly sized bypass line with globe valve on each stage, to provide continuous operation
should regulator maintenance be required.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
A safety relief valve (SRV) is appropriate where applicable codes dictate their requirement, or anywhere
protection of downstream piping and equipment from over-pressurization is desired. The SRV needs to handle
the complete volume of steam from the regulator and bypass loop. Consult the factory for appropriate SRV
sizing guidelines.
ENGINEERING
z
302
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www.watsonmcdaniel.com
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
DRAIN
VALVE
APPLICATION
DEPENDENT
10 PIPE
DIAMETERS
MINIMUM
TO
CONDENSATE
RETURN
TO
CONDENSATE
RETURN
CHECK ISOLATION
VALVE VALVE
STEAM
TRAP
GATE
VALVE
20 PIPE
DIAMETERS MINIMUM
PRESSURE
SENSING LINE
DRAIN
VALVE
GATE
VALVE
STEAM
TRAP
P
PILOT
DRIP
PAN
ELBOW
2nd Stage
TO
CONDENSATE
RETURN
STEAM
TRAP
PRESSURE
SENSING
LINE
10 PIPE
DIAMETERS
MINIMUM
REGULATOR
HDP
BYPASS
GLOBE
VALVE
TWO-STAGE (SERIES) PRESSURE REDUCING STATION
(HD REGULATOR APPLICATIONS)
1st Stage
STEAM
TRAP
STRAINER
P
PILOT
REGULATOR
HDP
BYPASS
GLOBE
VALVE
STRAINER
ISOLATION
VALVE
GATE
VALVE
10 PIPE
DIAMETERS
MINIMUM
ENGINEERING
www.watsonmcdaniel.com
SEPARATOR
STEAM
INLET
VENT
GATE
VALVE
SRV
DRAIN
VALVE
STEAM
OUTLET
REGULATING VALVE APPLICATIONS
TWO-STAGE (SERIES) PRESSURE REDUCING STATION
Figure 10:
303
REGULATING VALVE APPLICATIONS
PARALLEL PRESSURE REDUCING STATION
PURPOSE:
For reducing system inlet pressure to a constant outlet pressure when steam flow rates vary widely.
OPERATION:
Typically referred to as 1/3 - 2/3 system, one valve may be sized for 1/3 of the total load demand
and the other for 2/3. When full load is required, both valves will be open and regulating. The primary
valve is set at a pressure 2 PSI higher than the secondary valve to allow the secondary valve – set at
the lower pressure – to modulate closed when flow demand is reduced and outlet pressure begins to
rise. The primary valve may be selected as either the larger or smaller PRV, based on expected
load demands.
INSTALLATION GUIDELINES
(see Figure 11)
This example depicts a parallel pilot-operated steam PRV pressure reducing station using HDP regulators.
An external sensing line is required to sense downstream pressure from each regulator. The end of each sensing
line is placed away from the turbulent flow at the valve outlet. This helps to improve accuracy of the set pressures.
Set pressure for each PRV is adjusted by turning a screw on the pilot to increase or decrease compression on a
balancing spring.
z
Proper setting of the valves is key to proper operation. The chosen primary valve should be set at a pressure
approximately 2 PSI higher than that of the secondary valve.
z
For optimum operation and service life, maintain recommended minimum piping straight runs before and
after the PRV. Inlet pipe diameters are typically 1-2 sizes larger and outlet pipe diameters 2-3 sizes larger
than the end connections of an appropriately sized PRV. The purpose of increasing the pipe size downstream
of the regulator is to keep the steam velocity constant on both sides of the regulator.
z
Each pressure sensing line should slope downwards, away from the regulator, to prevent condensate from
entering the pilot.
z
Eccentric reducers are used on valve inlets to prevent accumulation of pipeline moisture which could become
entrained with high-velocity steam, possibly resulting in dangerous waterhammer.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required, as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider installing a properly sized bypass line with globe valve to provide continuous operation should
regulator maintenance be required.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
A safety relief valve (SRV) is appropriate where applicable codes dictate their requirement, or anywhere
protection of downstream piping and equipment from over-pressurization is desired. The SRV needs to handle
the complete volume of steam from the regulator and bypass loop. Consult the factory for appropriate SRV
sizing guidelines.
ENGINEERING
z
304
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www.watsonmcdaniel.com
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DRAIN
VALVE
ENGINEERING
www.watsonmcdaniel.com
Secondary
Primary
STEAM
INLET
APPLICATION
DEPENDENT
STEAM
TRAP
HDP
STEAM
TRAP
ISOLATION
VALVE
TO
CONDENSATE
RETURN
TO
CONDENSATE
RETURN
PRESSURE
SENSING LINE
STEAM
TRAP
GATE
VALVE
PARALLEL PRESSURE REDUCING STATION
(HD REGULATOR APPLICATIONS)
TO
CONDENSATE
RETURN
CHECK
VALVE
STEAM
TRAP
P
PILOT
HDP REGULATOR
STRAINER
GATE
VALVE
BYPASS
GLOBE
VALVE
PRESSURE
SENSING LINE
10 PIPE
DIAMETERS MINIMUM
TO
CONDENSATE
RETURN
P
PILOT
REGULATOR
CHECK ISOLATION
VALVE VALVE
STRAINER
ISOLATION STRAINER
VALVE
STRAINER
ISOLATION
VALVE
SEPARATOR
APPLICATION
DEPENDENT
SEPARATOR
GATE
VALVE
10 PIPE
DIAMETERS MINIMUM
GATE
VALVE
DRIP
PAN
ELBOW
VENT
SRV
DRAIN
VALVE
STEAM
OUTLET
REGULATING VALVE APPLICATIONS
PARALLEL PRESSURE REDUCING STATION
Figure 11:
305
REGULATING VALVE APPLICATIONS
TWO-STAGE PARALLEL PRESSURE REDUCING STATION
PURPOSE:
For reducing system inlet pressure to a constant outlet pressure when both flow conditions vary
widely and a high pressure drop (i.e. higher than the recommended range of a single stage regulator)
is required.
OPERATION:
This system is a combination of Two-Stage (Series) and Parallel pressure reducing stations and
operates based on the individual principles of each system. This allows for accurate control of outlet
pressure when both high pressure and high flow turndowns are required.
ENGINEERING
INSTALLATION GUIDELINES:
(see Figure 12)
z
This example depicts a two-stage parallel pilot-operated steam PRV pressure reducing station using HDP regulators.
An external sensing line is required to sense downstream pressure from each regulator. The end of each sensing
line is placed away from the turbulent flow at the valve outlet. This helps to improve accuracy of the set pressures.
Set pressure for each PRV is adjusted by turning a screw on the pilot to increase or decrease compression on a
balancing spring.
z
Proper setting of the valves is key to proper operation. The chosen 1st stage primary valve should be set at a
pressure approximately 2 PSI higher than that of the 1st stage secondary valve.
z
For optimum operation and service life, maintain recommended minimum piping straight runs before and
after the PRV. Inlet pipe diameters are typically 1-2 sizes larger and outlet pipe diameters 2-3 sizes larger
than the end connections of an appropriately sized PRV. The purpose of increasing the pipe size downstream
of the regulator is to keep the steam velocity constant on both sides of the regulator.
z
Each pressure sensing line should slope downwards, away from the regulator, to prevent condensate from
entering the pilot.
z
Eccentric reducers are used on valve inlets to prevent accumulation of pipeline moisture which could become
entrained with high-velocity steam, possibly resulting in dangerous waterhammer.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required, as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider installing a properly sized bypass line with globe valve on each stage, to provide continuous operation
should regulator maintenance be required.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
A safety relief valve (SRV) is appropriate where applicable codes dictate their requirement, or anywhere
protection of downstream piping and equipment from over-pressurization is desired. The SRV needs to handle
the complete volume of steam from the regulator and bypass loops. Consult the factory for appropriate SRV
sizing guidelines.
306
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www.watsonmcdaniel.com
Secondary
DRAIN
VALVE
SEPARATOR
P
PILOT
HDP
REGULATOR
TO
CONDENSATE
RETURN
TO
CONDENSATE
RETURN
DRAIN
VALVE
GATE
VALVE
GATE
VALVE
STEAM
TRAP
DRIP
PAN
ELBOW
2nd Stage
STEAM
TRAP
PRESSURE
SENSING LINE
PRESSURE
SENSING LINE
10 PIPE
DIAMETERS
MINIMUM
TO
CONDENSATE
RETURN
HDP
REGULATOR
BYPASS
GLOBE
VALVE
P
PILOT
HDP
REGULATOR
TWO-STAGE PARALLEL PRESSURE REDUCING STATION
(HD REGULATOR APPLICATIONS)
1st Stage
STEAM
TRAP
STEAM
TRAP
GATE
VALVE
20 PIPE DIAMETERS
MINIMUM
PRESSURE
SENSING LINE
HDP
REGULATOR
STRAINER
GATE
VALVE
BYPASS
GLOBE VALVE
GATE
VALVE
PRESSURE
SENSING LINE
10 PIPE
DIAMETERS
MINIMUM
TO
CONDENSATE
RETURN
CHECK ISOLATION
VALVE VALVE
STEAM
TRAP
STRAINER
GATE
VALVE
STRAINER
ISOLATION
VALVE
SEPARATOR
APPLICATION
DEPENDENT
ENGINEERING
Primary
STEAM
INLET
VENT
GATE
VALVE
GATE
VALVE
SRV
DRAIN
VALVE
STEAM
OUTLET
REGULATING VALVE APPLICATIONS
TWO-STAGE PARALLEL PRESSURE REDUCING STATION
Figure 12:
307
REGULATING VALVE APPLICATIONS
TEMPERATURE CONTROL of a HEAT EXCHANGER with PRESSURE LIMITING
PURPOSE:
For accurately controlling both temperature of a product being heated in heat transfer equipment
as well as limiting the pressure of the incoming steam, providing optimum heat transfer characteristics.
OPERATION:
When a pilot-operated HD valve is selected, a single valve can be used for both pressure and
temperature control when equipped with a P-pilot and T-pilot (HDPT). As temperature at the sensing
bulb falls below set point, the valve begins to modulate open to supply steam for heating. Supply
pressure to the heat exchanger is then controlled by adjusting the pressure pilot to the recommended
value for optimum heat transfer and/or a limiting pressure of the heat transfer equipment. The HDPT
Regulator requires no external power source.
INSTALLATION GUIDELINES:
(see Figure 13)
The temperature and pressure pilots should be set individually, starting slowly and gradually with the T-pilot.
z
Care should be given to the installation of the temperature sensing bulb to ensure full immersion in the liquid.
The sensing bulb should be placed as close as possible to the heat exchanger vessel to ensure accurate
temperature control of the process fluid.
z
For optimum operation and service life, maintain recommended minimum piping straight runs before and
after the PRV. Inlet pipe diameters are typically 1-2 sizes larger and outlet pipe diameters 2-3 sizes larger
than the end connections of an appropriately sized PRV. The purpose of increasing the pipe size downstream
of the regulator is to keep the steam velocity constant on both sides of the regulator.
z
The pressure sensing line should slope downwards, away from the regulator, to prevent condensate from
entering the pilot.
z
Eccentric reducers, if required, are used on valve inlets to prevent accumulation of pipeline moisture which could
become entrained with high-velocity steam, possibly resulting in dangerous waterhammer.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required, as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
The vacuum breaker and auxiliary air vent located at the top of the heat exchanger vessel promotes proper
drainage and optimum heat transfer. The vacuum breaker allows system equalization with atmospheric air to
allow gravity condensate drainage when vacuum is formed from condensing steam. The air vent improves
heat-up times and overall heat transfer by expelling accumulated air on start-up.
z
A safety relief valve (SRV) is appropriate where applicable codes dictate their requirement, or anywhere
protection of downstream piping and equipment from over-pressurization is desired. Consult the factory for
appropriate SRV sizing guidelines.
ENGINEERING
z
308
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www.watsonmcdaniel.com
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309
ISOLATION
VALVE
STEAM
SUPPLY
DRAIN
VALVE
STRAINER
ISOLATION
VALVE
SEPARATOR
T
PILOT
SRV
COLD WATER
INLET
PRESSURE
SENSING LINE
CAPILLARY
P
PILOT
F&T
TRAP
HOT WATER
OUTLET
TEMPERATURE
SENSING BULB
DRIP PAN
ELBOW
VENT
WVBSS
HEAT
EXCHANGER
DRAIN
VALVE
VACUUM
BREAKER
TEMPERATURE CONTROL of a HEAT EXCHANGER with PRESSURE LIMITING
(HD REGULATOR APPLICATIONS)
F&T
TRAP
ENGINEERING
www.watsonmcdaniel.com
STRAINER
GATE VALVE
APPLICATION
DEPENDENT
HDPT
REGULATOR
AIR
VENT
AV2000
REGULATING VALVE APPLICATIONS
TEMPERATURE CONTROL of a HEAT EXCHANGER with PRESSURE LIMITING
Figure 13:
REGULATING VALVE APPLICATIONS
AUTOMATIC TEMPERATURE CONTROL of a BATCH PROCESS
with Electrical Time Sequence Programmer (Solenoid Pilot)
PURPOSE:
For accurately controlling temperature of a batch process where on-off operation is to be
electronically controlled.
OPERATION:
Operation is similar to that of the pressure and temperature combination pilot-operated regulator
whereby the temperature (T) pilot senses the temperature inside the autoclave and appropriately
modulates the flow of steam. Pressure is limited by the pressure (P) pilot. The solenoid valve
(S-pilot) is electronically activated to control on-off operation of the batch process. (The HD Regulator
operating with these three pilots is known as the HDPTS Regulator.)
INSTALLATION GUIDELINES:
(see Figure 14)
The temperature and pressure pilots should be set individually, starting slowly and gradually with the T-pilot.
z
For optimum operation and service life, maintain recommended minimum piping straight runs before and
after the PRV. Inlet pipe diameters are typically 1-2 sizes larger and outlet pipe diameters 2-3 sizes larger
than the end connections of an appropriately sized PRV. The purpose of increasing the pipe size downstream
of the regulator is to keep the steam velocity constant on both sides of the regulator.
z
The pressure sensing line should slope downwards, away from the regulator, to prevent condensate from
entering the pilot.
z
Eccentric reducers, if required, are used on valve inlets to prevent accumulation of pipeline moisture which could
become entrained with high-velocity steam, possibly resulting in dangerous waterhammer.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required, as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
The thermostatic air vent located at the top of the autoclave chamber promotes optimum heat transfer.
The air vent improves heat-up times and overall heat transfer by expelling accumulated air on start-up.
z
A safety relief valve (SRV) is appropriate where applicable codes dictate their requirement, or anywhere
protection of downstream piping and equipment from over-pressurization is desired. Consult the factory for
appropriate SRV sizing guidelines.
ENGINEERING
z
310
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www.watsonmcdaniel.com
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
ISOLATION
VALVE
TO
CONDENSATE
RETURN
F&T
TRAP
TO CONDENSATE
RETURN
S
PILOT
T
PILOT
CAPILLARY
P
PILOT
CHECK
VALVE
F&T
TRAP
TO DRAIN
PRESSURE
SENSING
LINE
SRV
THERMOSTATIC
STEAM TRAP
GATE
VALVE
F&T
TRAP
AUTOCLAVE
TEMPERATURE
SENSING BULB
THERMOSTATIC
AIR VENT
STEAM
FILTER
DRAIN
VALVE
TO
CONDENSATE
RETURN
DRIP
PAN
ELBOW
AUTOMATIC TEMPERATURE CONTROL of a BATCH PROCESS with Electrical Time Sequence Programmer (Solenoid Pilot)
(HD REGULATOR APPLICATIONS)
DRAIN
VALVE
STRAINER
STRAINER
ELECTRIC
OPERATOR
GATE
VALVE
APPLICATION
DEPENDENT
POWER
VENT
Figure 14:
311
ENGINEERING
www.watsonmcdaniel.com
ISOLATION
VALVE
SEPARATOR
STEAM
SUPPLY
HDPTS
REGULATOR
REGULATING VALVE APPLICATIONS
AUTOMATIC TEMPERATURE CONTROL of a BATCH PROCESS
with Electrical Time Sequence Programmer (Solenoid Pilot)
REGULATING VALVE APPLICATIONS
TEMPERATURE CONTROL of a SEMI-INSTANTANEOUS HEATER using a
Self-Contained Temperature Regulating Valve
PURPOSE:
For accurate control of the temperature of a product being heated when the benefits of a
self-contained regulator are required.
OPERATION:
A self-contained temperature regulating valve (TRV) such as the W91, offers response times and
characteristics suitable for semi-instantaneous heating applications. The temperature sensing bulb
senses the temperature of the liquid being heated and allows modulation of the valve for appropriate
supply of steam.
ENGINEERING
INSTALLATION GUIDELINES:
(see Figure 15)
z
Care should be given to the installation of the temperature sensing bulb to ensure full immersion in the liquid.
The sensing bulb should be placed as close as possible to the heater tank to ensure accurate temperature
control of the process fluid.
z
For optimum operation and service life, maintain recommended minimum piping straight runs before and
after the PRV. Inlet pipe diameters are typically 1-2 sizes larger and outlet pipe diameters 2-3 sizes larger
than the end connections of an appropriately sized PRV. The purpose of increasing the pipe size downstream
of the regulator is to keep the steam velocity constant on both sides of the regulator.
z
All pressure sensing lines should slope downwards, away from the regulator, to prevent condensate from
entering the pilot.
z
Eccentric reducers, if required, are used on valve inlets to prevent accumulation of pipeline moisture which could
become entrained with high-velocity steam, possibly resulting in dangerous waterhammer.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required, as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider installing a properly sized bypass line with globe valve to provide continuous operation should
regulator maintenance be required.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
The vacuum breaker and auxiliary air vent located at the top of the heater tank promotes proper drainage
and optimum heat transfer. The vacuum breaker allows system equalization with atmospheric air to allow
gravity condensate drainage when vacuum is formed from condensing steam. The air vent improves heat-up
times and overall heat transfer by expelling accumulated air on start-up.
z
A safety relief valve (SRV) is appropriate where applicable codes dictate their requirement, or anywhere
protection of downstream piping and equipment from over-pressurization is desired. The SRV needs to handle
the complete volume of steam from the regulator and bypass loop. Consult the factory for appropriate SRV
sizing guidelines.
312
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
www.watsonmcdaniel.com
STRAINER
STRAINER
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
CHECK
VALVE
AV2000
AIR
VENT
DRAIN
VALVE
TO
CONDENSATE
RETURN
TEMPERATURE
SENSING
BULB
STEAM
TRAP
SEMI-INSTANTANEOUS
HEATER
GATE
VALVE
WVBSS
VACUUM
BREAKER
GLOBE
VALVE
TO
CONDENSATE
RETURN
ISOLATION
VALVE
STEAM
TRAP
BYPASS LINE
GATE
VALVE
COLD
WATER
INLET
(TEMPERATURE REGULATOR APPLICATIONS)
SEMI-INSTANTANEOUS HOT WATER HEATER WITH W91 TEMPERATURE REGULATOR
ISOLATION
VALVE
SEPARATOR
CAPILLARY
HOT
WATER
OUTLET
Figure 15:
ENGINEERING
STEAM
INLET
APPLICATION
DEPENDENT
TEMPERATURE
REGULATING
VALVE
W91
REGULATING VALVE APPLICATIONS
TEMPERATURE CONTROL of a SEMI-INSTANTANEOUS HEATER using a
Self-Contained Temperature Regulating Valve
313
PRESSURE MOTIVE PUMP (PMP) APPLICATIONS
DRAINAGE of a SINGLE SOURCE of CONDENSATE for a CLOSED LOOP SYSTEM
PURPOSE:
For removing condensate from below steam heat transfer equipment when a modulating valve is
used for control and stall conditions will exist.
OPERATION:
The Pressure Motive Pump (PMP) is used to overcome the stall condition that exists when steam
feeding a single piece of heat transfer equipment is controlled by a modulating steam valve and steam
pressure falls below system back pressure as the valve closes. A steam trap is required after the
PMP
to prevent the loss of live steam when the system is under positive pressure. Operating as a closed
loop provides an energy-efficient system by eliminating the need to vent flash steam.
INSTALLATION GUIDELINES:
(see Figure 16)
Proper installation and piping of the pump vent line is critical to ensure the system operates correctly.
Follow guidelines or consult factory for additional information.
z
Maintain proper fill head above the top of the pump to ensure proper function of the pump and system.
A suitably sized reservoir or oversized piping should be installed ahead of the pump for accumulation of
condensate during the pump’s discharge cycle (i.e. not filling).
z
The steam trap after the pump must be sized in conjunction with the pump to ensure proper function as a
system. Improper sizing may result in reduced capacity leading to condensate back-up, poor heat transfer and
potentially dangerous waterhammer. Consult appropriate sections of this catalog or the factory for guidelines
regarding proper sizing of the pump-trap combination.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required, as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
The thermostatic air vent located above the condensate reservoir promotes optimum heat transfer.
The air vent improves heat-up times and overall heat transfer by expelling accumulated air on start-up.
ENGINEERING
z
314
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
STRAINER
F&T
TRAP
STEAM
HEATING
COIL
GATE
VALVE
RESERVOIR
CHECK
VALVE
HEATED
AIR OUTLET
TEMPERATURE
CONTROL
SENSOR
CAPILLARY
PUMP
VENT
LINE
PRESSURE
MOTIVE
PUMP
THERMOSTATIC
AIR VENT
MOTIVE
STEAM
TO
DRAIN
(PMP APPLICATIONS)
TO
CONDENSATE
RETURN
CHECK
VALVE
THERMODYNAMIC
STEAM TRAP
F&T
TRAP
MOTIVE
STEAM
SUPPLY
DRAINAGE of a SINGLE SOURCE of CONDENSATE for a CLOSED LOOP SYSTEM
ISOLATION
VALVE
AIR
INLET
APPLICATION
DEPENDENT
GATE
VALVE
ENGINEERING
www.watsonmcdaniel.com
TO
CONDENSATE
RETURN
SEPARATOR
T
PILOT
HDT
REGULATOR
Figure 16:
ISOLATION
VALVE
STEAM
INLET
PRESSURE MOTIVE PUMP (PMP) APPLICATIONS
DRAINAGE of a SINGLE SOURCE of CONDENSATE for a CLOSED LOOP SYSTEM
315
PRESSURE MOTIVE PUMP (PMP) APPLICATIONS
DRAINAGE of CONDENSATE FROM BELOW GRADE for a CLOSED LOOP SYSTEM
To Achieve Minimal Fill Head
PURPOSE:
For drainage of condensate from below process equipment where fill head is limited due to height
restrictions and the pump must be installed below grade.
OPERATION:
When fill head is restricted and it is more suitable to create a pit below grade than reposition
process equipment, the Pressure Motive Pump (PMP) may be modified so both condensate inlet
and outlet connections are on top to limit the necessary pit size. When stall exists, condensate
will accumulate between the inlet and outlet check valves and eventually drain into and fill the PMP
tank. Once the PMP fills and its mechanism trips, high pressure motive steam will enter the pump
tank and force condensate back out the same connection. The check valves will direct the flow
of pumped condensate into the return piping.
INSTALLATION GUIDELINES:
(see Figure 17)
The positioning of the check valves and PMP fill/discharge line are the key elements which allow the system
to function properly. The check valves dictate the proper direction of condensate flow for both fill and discharge
cycles of the PMP. The PMP fill/discharge line should be taken off the top, as shown, so condensate only
accumulates and fills the pump during stall.
z
Proper installation and piping of the pump vent line is critical to ensure the system operates correctly.
Follow guidelines or consult factory for additional information.
z
Maintain proper fill head above the top of the pump to ensure proper function of the pump and system.
A suitably sized reservoir or oversized piping should be installed ahead of the pump for accumulation of
condensate during the pump’s discharge cycle (i.e. not filling).
z
The steam trap after the pump must be sized in conjunction with the pump to ensure proper function as a
system. Improper sizing may result in reduced capacity leading to condensate back-up, poor heat transfer and
potentially dangerous waterhammer. Consult appropriate sections of this catalog or the factory for guidelines
regarding proper sizing of the pump-trap combination.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
The thermostatic air vent located above the condensate reservoir promotes optimum heat transfer.
The air vent improves heat-up times and overall heat transfer by expelling accumulated air on start-up.
ENGINEERING
z
316
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
MOTIVE
STEAM
PRESSURE
MOTIVE
PUMP
PUMP
VENT
LINE
THERMOSTATIC
AIR VENT
TO
DRAIN
MOTIVE
STEAM
SUPPLY
F&T
TRAP
CHECK
VALVE
THERMODYNAMIC
STEAM TRAP
TO
CONDENSATE
RETURN
TO DRAIN OR
CONDENSATE
RETURN
(PMP APPLICATIONS)
DRAINAGE of CONDENSATE FROM BELOW GRADE for a CLOSED LOOP SYSTEM
to Achieve Minimal Fill Head
ENGINEERING
www.watsonmcdaniel.com
CHECK
VALVE
RESERVOIR
CONDENSATE
FROM PROCESS
EQUIPMENT
PRESSURE MOTIVE PUMP (PMP) APPLICATIONS
DRAINAGE of CONDENSATE FROM BELOW GRADE for a CLOSED LOOP SYSTEM
To Achieve Minimal Fill Head
Figure 17:
317
PRESSURE MOTIVE PUMP (PMP) APPLICATIONS
FLASH STEAM RECOVERY
PURPOSE:
For recovering flash steam from multiple condensate sources and drainage of the condensate
when the total system back pressure is greater than the total of the individual source pressures.
OPERATION:
Condensate at various pressures collects in a receiver (flash tank), equalizing the pressures
to that of the flash tank. This allows drainage by gravity into the Pressure Motive Pump (PMP),
filling the PMP until the internal mechanism reaches its upper trip point and activates the motive
steam used for pumping. The flash steam generated from the high pressure condensate may be
used to supplement other applications for optimum energy efficiency. The pressure in the receiver
tank is maintained by a back pressure regulator and protected by a safety relief valve.
INSTALLATION GUIDELINES:
(see Figure 18)
The key element for proper system operation is the sizing of the receiver tank and receiver vent connection,
which must accommodate the flash steam. Consult appropriate sections of this catalog or the factory for
guidelines regarding proper sizing of the receiver tank and receiver vent connection.
z
Proper installation and piping of the pump vent line is critical to ensure the system operates correctly.
Follow guidelines or consult factory for additional information.
z
Careful consideration should be given to sizing of the auxiliary components such as the back pressure
regulator and safety relief valve.
z
Maintain proper fill head above the top of the pump to ensure proper function of the pump and system.
A suitably sized receiver or oversized piping should be installed ahead of the pump for accumulation of
condensate during the pump’s discharge cycle (i.e. not filling).
z
The steam trap after the pump must be sized in conjunction with the pump to ensure proper function as a
system. Improper sizing may result in reduced capacity leading to condensate back-up, poor heat transfer and
potentially dangerous waterhammer. Consult appropriate sections of this catalog or the factory for guidelines
regarding proper sizing of the pump-trap combination.
z
While the separator shown upstream is appropriate for protection of the PRV, it is not always required, as a
properly sized drip leg with steam trap may be sufficient. It is recommended for systems where steam is known
to be “wet” and the entrained moisture could affect valve performance and/or result in component damage.
z
Consider low-cracking pressure (1/4 PSI opening pressure) check valves after steam traps when discharging
into condensate return lines. Check valves eliminate the possibility of condensate backing up through the
steam trap into the system.
z
A safety relief valve (SRV) is appropriate where applicable codes dictate their requirement, or anywhere
protection of downstream piping and equipment from over-pressurization is desired. Consult the factory for
appropriate SRV sizing guidelines.
ENGINEERING
z
318
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PRESSURE
SENSING
LINE
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
ENGINEERING
www.watsonmcdaniel.com
HIGH PRESSURE
CONDENSATE
(FROM TRAPS)
CHECK
VALVE
PACKAGED ASME
CODE STAMPED
PRESSURE MOTIVE
PUMP SYSTEM
F&T
TRAP
CHECK
VALVE
THERMODYNAMIC
STEAM TRAP
TO
CONDENSATE
RETURN
(PMP APPLICATIONS)
F&T
TRAP
HIGH PRESSURE
MAKEUP SUPPLY
LOW PRESSURE
MAKEUP SUPPLY
APPLICATION
DEPENDENT
OVERFLOW
TO DRAIN
TO CONDENSATE
RETURN MAIN
F&T
TRAP
REGULATOR
SEPARATOR
GATE
VALVE
STRAINER
PILOT-OPERATED
PRESSURE REDUCING
VALVE (FOR MAKEUP)
HDP
P
PILOT
PRESSURE
SENSING
LINE
FLASH STEAM RECOVERY
PRESSURE
MOTIVE
PUMP
PUMP
VENT
LINE
MOTIVE
STEAM
SUPPLY
GATE
VALVE
FLASH
STEAM
(FLASH TANK)
RECEIVER
SRV
Figure 18:
PILOT-OPERATED
BACK PRESSURE
REGULATING
VALVE
VENT TO
ATMOSPHERE
DRIP PAN
ELBOW
VENT
PRESSURE MOTIVE PUMP (PMP) APPLICATIONS
FLASH STEAM RECOVERY
319
PRESSURE MOTIVE PUMP (PMP) APPLICATIONS
REMOVAL OF WATER OR CONDENSATE FROM A PIT
PURPOSE:
For drainage of water and condensate from collection pits – especially with minimal horizontal space.
OPERATION:
Water enters the inlet check valve through a screened area at the bottom of the PMPSP Sump
Drainer. After the pump fills, the internal mechanism is actuated and the water is discharged from
the pump by motive steam or compressed air or other gas.
INSTALLATION GUIDELINES:
(see Figure 19)
Make certain vent line is unobstructed and allowed to discharge directly to atmosphere.
z
Other compressed gases, such as nitrogen, may be used as a motive source.
z
Pit diameter should be at least 18” to ensure proper installation and operation.
z
Proper installation and piping of the pump vent line is critical to ensure the system operates correctly.
Follow guidelines or consult factory for additional information.
ENGINEERING
z
320
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PRESSURE MOTIVE PUMP (PMP) APPLICATIONS
REMOVAL OF WATER OR CONDENSATE FROM A PIT
Figure 19:
“The Pit Boss”
MOTIVE STEAM
OR
COMPRESSED AIR
DISCHARGE LINE
WATER OR
CONDENSATE
ISOLATION
VALVE
VENT
STRAINER
DISC TRAP
STEAM
OR
AIR
PMPSP
SUMP
DRAINER
SCREENED
INLET
18
MINIMUM
DIAMETER
PMPSP Sump Drainer (“The Pit Boss”)
ENGINEERING
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www.watsonmcdaniel.com
321
Product Cross Reference
Steam Traps
THERMODYNAMIC TRAPS
Manufacturer
Watson McDaniel
Desc.
Size
Product
Standard 600 PSI
3/8”
Disc
1/2”
WD600
Trap
3/4”
1”
Armstrong
F/F Dim Product
2”
2.7”
2.8”
3.3”
CD-33
Low
Capacity
Disc Trap
1/2”
3/4”
WD600L
2.7”
2.8”
CD-33L
Low
Capacity
Disc Trap
w/ Strainer
1/2”
3/4”
1”
WD600LS
3.1”
3.5”
3.7”
CD-33SL
Disc Trap
with
Strainer
Disc Trap
with
Strainer
&
Blowdown
Low Cap.
Disc Trap
w/ Strainer
&
Blowdown
1/2”
3/4”
3.5”
1/2”
3.5”
3/4”
WD600SB
3/4”
3.7”
3.5”
3.31”
3.31”
3.31”
3.31”
3.31”
NTD600
S610L
F/F Dim
2”
2.68”
2.81”
3.31”
TD6523
TD6524
TD6526
TD6528
F/F Dim
2”
2.75”
2.75”
3.25”
3.25”
Spirax Sarco
Product
F/F Dim
TD-52
2”
2.7”
2.8”
3.3”
TD-52L
3.25”
3.31”
CD-33SB
CD-33SBL
F/F Dim
29
2”
2.25”
2.87”
3.37”
TLV
Product
F/F Dim
A3N
P46SS
A3N
P46SS
3.87”
2.75”
4.06”
2.75”
2.7”
2.8”
3.5”
3.7”
3.5”
CD-33S
Yarway
Product
3.1”
TD-42L
3.31”
NTD600S
2”
3.5”
2.68”
3.5”
2”
NTD600SB
3.5”
TD6424
TD6426
TD6428
3.06”
3.06”
3.25”
3.1”
TD-42H
TD-42HB
129Y
2.76”
3.5”
2.95”
3.5”
2.76”
A3N
P46SS
3.87”
2.75”
2.95”
A3N
P46SS
4.06”
2.75”
129YB
3.7”
2.68”
3.5”
3.5”
TD-42LB
WD600LSB
1”
Hoffman
Product
3.31”
3.1”
WD600S
Spence Nicholson
F/F Dim Product
3.7”
3.72”
Repairable In-line
3.16”
1/2”
Disc Trap
with
Strainer
Disc Trap
with
Strainer
&
Blowdown
3/4”
WD700S
S610
3.15”
3.25”
3.55”
721
3.54”
1”
6.31”
3.93”
1/2”
3.16”
3.15”
3/4”
WD700SB
3.55”
721
6.31”
1”
3.54”
3.93”
A46S
A50S
P46SRN
A46S
A50S
P46SRN
A46S
A50S
P46SRN
A46S
A50S
P46SRN
A46S
A50S
P46SRN
A46S
A50S
P46SRN
3.12”
3.12”
3.43”
3.12”
3.12”
3.43”
High-Pressure Repairable In-line
Disc Trap
with
Strainer
Disc Trap
w/ Strainer
&
Blowdown
1/2”
3/4”
1”
1/2”
3/4”
1”
3.15”
3.54”
6.31”
3.15”
WD700HSB 3.54”
6.31”
721HP
3.15”
3.54”
3.93”
3.15”
3.54”
3.93”
460D3
4.81”
4.81”
4.81”
WD700HS
High-Pressure Repairable In-line – 900 PSI
Disc Trap
with
Strainer
1/2”
3/4”
1”
WD900S
3.6”
3.6”
6.5”
TD62
3.6”
3.6”
3.9”
TD120
6.2”
6.2”
6.2”
A65SS
3.12”
3.12”
3.43”
HR150A
5.88”
Ultra High-Pressure Repairable In-line – 3600 PSI
Disc Trap
322
1/2”
3/4”
1”
WD3600
6.2”
6.2”
6.2”
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
Watson McDaniel reserves the
right to change the designs
and/or materials of its
products without notice.
©2010 Watson McDaniel Company
PRODUCT CROSS REFERENCE (CONTINUED)
Steam Traps (continued)
THERMOSTATIC TRAPS
Manufacturer Watson McDaniel
Desc.
Size
Product
Standard 600 psi
Non-Repairable
1/2”
3/4”
Thermostatic 1/2”
650 PSI
3/4”
Repairable
Thermostatic
300 PSI
Thermostatic
250 PSI
Thermostatic
650 PSI
1/2”
3/4”
1/2”
3/4”
Thermostatic
650 PSI
with
Strainer
1/2”
Thermostatic
650 PSI
with
Strainer &
Blowdown
1/2”
Thermostatic
300 PSI
3/4”
1”
Thermostatic
300 PSI
with
Strainer
3/4”
Thermostatic
300 PSI
w/ Strainer
&
Blowdown
3/4”
Thermostatic
125 PSI,
Angle*
1/2”
3/4”
WT1000
WT2000C
3.75”
WT2500
WT3000
Armstrong
F/F Dim Product
2.5”
2.5”
3.75”
3.75”
F/F Dim
Spence Nicholson
Product
WT-1
TTF-1
4.5”
4.69”
3”
3”
4.5”
4.5”
TA
N450
N650
4.5”
2.5”
2.5”
2.5”
2.5”
Product
LV21
F/F Dim
2.18”
2.18”
L21S
L32S
L21S
L32S
TM600N
5.25”
3.12”
3.12”
5”
5”
4.5”
4.5”
N450
4.5”
3”
3”
3”
N450Y
WT4000S
4.5”
3”
4.5”
3”
WT4000SB
N450Y
4.5”
TT125
F/F Dim
N650Y
4.5”
1”
TLV
Hoffman
Product
5.25”
5”
WT3000SB
1”
DTS300
F/F Dim
3”
3”
5”
5”
N650Y
4.5”
WT4000
3.75”
3.93”
5”
WT3000S
3/4”
Spirax Sarco
Product
TSS300
4.5”
3/4”
F/F Dim
2.81”
3.06”
3”
TS-3
3.12”
3.5”
N125
2.75”
3.18”
RTA-125
2.8”
3”
17C
8C
3.24”
3.12”
RT3A
3.12”
3.06”
Adjustable Bi-Metallic
2.75”
1/2”
3/4”
WT5000
3.12”
3.12”
1”
LEX3N-TZ
LEXW3N-TZ
LEXF3N-TZ
LEX3N-TZ
LEXW3N-TZ
LEXF3N-TZ
LEX3N-TZ
LEXW3N-TZ
LEXF3N-TZ
2.75”
3.12”
3.12”
* Right Angle (90˚) Ports
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
323
PRODUCT CROSS REFERENCE (CONTINUED)
Steam Traps (continued)
FLOAT & THERMOSTATIC TRAPS
Manufacturer Watson McDaniel
Armstrong
Desc.
Size
Product F/F Dim Product
Ductile Iron – Repairable In-Line
1/2”
4.8”
BI2
3/4”
4.8”
BI3
FTT
In-Line
1”
4.8”
BI4
1.5”
10.6”
BI6
2”
11.9”
BI8
High
Capacity
1.5”
2”
2.5”
FTE
3”
4.5”
7.25”
Cast Iron – Repairable In-Line
3/4”
3.3”
1”
3.3”
15 PSI
1.25”
3”
WFT-015
1.5”
3”
2”
4.9”
3/4”
3.3”
1”
3.3”
1.25”
3”
30 PSI
WFT-030
1.5”
3”
75 PSI
125 PSI
175 PSI
324
2.75”
2.75”
3”
4.18”
6”
FTI
5.5”
5.5”
5.5”
J&L
K&M
6.62”
11.31”
FT-X-8
FT-C-10
6.3”
9.5”
15-B3
15-B4
15-B5
15-B6
15-B8
30-B3
30-B4
30-B5
2.75”
3”
3”
4.18”
6”
2.75”
3”
3”
FT015H-3
FT015H-4
FT015H-5
FT015H-6
FT015H-8
FT030H-3
FT030H-4
FT030H-5
3.93”
3.93”
3”
3”
4.94”
3.31”
3.31”
3”
30-B6
4.18”
FT030C-6
3”
Product
FTE10
6.3”
HC
9.5”
FTN
FTN
F/F Dim
5.06”
5.06”
5.06”
11.12”
12.12”
3”
6.62”
9.5”
3.31”
3.31”
3”
3”
4.94”
3.31”
3.31”
3”
Spirax Sarco
Product F/F Dim
FT14
4.8”
4.8”
4.7”
10.6”
11.9”
FT-15
3.3”
3.3”
3”
4.25”
4.9”
3.3”
3.3”
3”
FT-30
3”
4.25”
30-B8
6”
FT030C-8
4.94”
4.94”
4.9”
75-A3
75-A4
75-A5
2.75”
3”
3”
FT075H-3
FT075H-4
FT075C-5
3.31”
3.31”
3”
3.31”
3.31”
3”
3.3”
3.3”
4.25”
1.5”
3”
75-A6
4.18”
FT075C-6
3”
2”
4.9”
75-A8
6”
FT075C-8
3/4”
1”
1.25”
3.3”
3.3”
3”
125-A3
125-A4
125-A5
2.75”
3”
3”
3”
125-A6
2”
4.9”
3/4”
1”
1.25”
FTN
FT-75
3”
4.25”
4.94”
4.94”
4.9”
FT125H-3
FT125H-4
FT125C-5
3.31”
3.31”
3”
3.31”
3.31”
3”
3.3”
3.3”
4.25”
4.18”
FT125C-6
3”
125-A8
6”
FT125C-8
4.94”
3”
3”
3”
175-A3
175-A4
175-A5
2.75”
3”
3”
FT175H-3
FT175H-4
FT175C-5
3.31”
3.31”
3”
3”
175-A6
4.18”
FT175C-6
3”
2”
4.5”
175-A8
6”
FT175C-8
4.94”
3/4”
1”
1.25”
3”
3”
3”
1.5”
1.5”
WFT-125
WFT-175
WFT-250
3/4”
1”
1.25”
1.5”
2”
3/4”
1”
1”
1.25”
1.5”
2”
3/4”
1”
1”
1.25”
1.5”
2”
FT3
FT4
FT6
FT7
FT8
FT33
FT34
FT35
FT36
FT37L
FT38
FT73
FT74
FT75
FT76
FT77L
FT78
FTN
3”
FT-125
4.94”
4.25”
4.9”
3.3”
3.3”
4.25”
FT-200
4.25”
4.9”
FT-200
3.3”
3.3”
4.25”
3”
4.25”
4.5”
4.9”
4.12”
4.12”
5”
6.37”
6.5”
4.12”
4.12”
5”
5”
6.37”
6.5”
4.12”
4.12”
5”
5”
6.37”
6.5”
FT015H-3
FT015H-4
FT015H-5
FT015H-6
FT015H-8
FT030H-3
FT030H-4
3.31”
3.31”
3”
5.25”
7.46”
3.31”
3.31”
FT030H-5
FT030H-6
3”
5.25”
FT075H-3
FT075H-4
3.31”
3.31”
J3X
JS7X
J87
F/F Dim
4.75”
4.75”
4.75”
11”
21.31”
4.5”
7.25”
4.9”
WFT-075
TLV
Product
3”
FTB
3.3”
3.3”
3”
2”
H Pattern
75 PSI
Spence Nicholson
F/F Dim
2”
1.5”
H Pattern
30 PSI
Hoffman
Product
3/4”
1”
1.25”
250 PSI
H Pattern
15 PSI
F/F Dim
SJ3-1
SJ3-1
SJ5-1
SJ6-1
SJ6-1
SJ3-2
SJ3-2
SJ5-2
SJ6-2
SJ7-2
SJ6-2
SJ7-2
SJ3-5
SJ3-5
SJ5-5
SJ6-10
SJ7-10
SJ6-10
SJ7-10
SJ3-10
SJ3-10
SJ5-10
SJ6-10
SJ7-10
SJ6-10
SJ7-10
SJ3-14
SJ3-14
SJ5-14
SJ6-14
SJ7-14
SJ6-14
SJ7-14
SJ3-14
SJ3-14
SJ5-14
SJ6-14
SJ7-14
SJ6-14
SJ7-14
3.31”
5.12”
3”
4.93”
4.93”
5.12”
5.12”
3”
4.06”
4.93”
5.12”
5.12”
3”
4.93”
4.93”
5.12”
5.12”
3”
4.93”
4.93”
5.12”
5.12”
3”
4.93”
4.93”
5.12”
5.12”
3”
4.93”
4.93”
PRODUCT CROSS REFERENCE (CONTINUED)
Steam Traps (continued)
FLOAT & THERMOSTATIC TRAPS (continued)
Manufacturer
Desc.
Size
Carbon Steel
In-Line
Offset
Watson McDaniel
Product
Armstrong
F/F Dim Product
Hoffman
F/F Dim Product
F/F Dim
Spence Nicholson
Product
3/4”
6.1”
CS
6.75”
FTE44
NFT650
1”
6.5”
CS
8.37”
FTE44
NFT650
9.8”
CS
11”
FTE44
NFT650
2”
11.8”
CS
11”
FTE44
NFT650
3”
4”
1.5”
5.12”
5.5”
5.12”
11”
11.12”
13.75”
12.12”
13.75”
Spirax Sarco
Product F/F Dim
TLV
Product
F/F Dim
FT450
6.1”
JH3X
5.12”
FT450
6.5”
JH3X
5.25”
FT450
9.8”
JH7.2X
16”
FT450
11.8”
JH8RX
23.25”
27.55”
39”
FT450
27.55”
39”
JL10
JL16
10.32”
39”
FT450
39”
J10
23.43”
24.06”
FTB
9.25”
FT46
5.8”
6.2”
9”
9”
FT600
2.5”
F/F Dim
FTES
8.4”
FT601
6.1”
6.5”
9.8”
11.8”
27.55”
39”
39”
LS
11.31”
Stainless Steel
In-Line
3/4”
1”
1.5”
2”
3”
4”
INVERTED BUCKET (IB) TRAPS
Manufacturer
Desc.
Size
Cast Iron
IB
Trap
IB
Trap
with
Strainer
1/2”
3/4”
1/2”
3/4”
1”
1/2”
3/4”
3/4”
1”
1/2”
3/4”
1/2”
3/4”
3/4”
1”
1.25”
1.5”
Watson McDaniel
Product
1031
1032
1033
1034
1041
1042
1044
1038S
F/F Dim
5”
5”
5”
5”
5”
6.5”
6.5”
7.75”
7.75”
5”
5”
5”
5”
7.12”
7.12”
7.12”
7.12”
Armstrong
Product
800
5”
811
812
813
880
B1S-2
881
B1S-3
883
F/F Dim
5”
5”
5”
5”
5”
6.5”
6.5”
7.75”
7.75”
5”
5”
5”
5”
7.87”
7.87”
Hoffman
Product
F/F Dim
B1-2
B1-3
6.93”
6.93”
B2-2
B2-3
6.93”
6.93”
Spence Nicholson
Product
80S
B1S-2
B1S-3
6.93”
6.93”
81S
82S
83S
F/F Dim
5.06”
5.06”
5.06”
5.06”
7”
8.12”
Spirax Sarco
Product
F/F Dim
5”
B1H
5”
5”
B2
6.6”
B2
B2
B3
6.6”
6.6”
7.9”
5”
5”
B2S
B2S
B3S
B4S
6.6”
6.6”
7.9”
9.3”
STAINLESS STEEL INVERTED BUCKET (SS IB) TRAPS
Manufacturer
Desc.
SS IB
Trap
SS IB Trap
Hi Cap.
Size
1/2”
3/4”
1/2”
3/4”
Watson McDaniel
Product
WSIB
WSIBH
F/F Dim
4.55”
4.55”
4.55”
4.55”
Armstrong
Product
1810
1811
F/F Dim
4.31”
4.31”
4.31”
4.31”
Spence Nicholson
Product
TSBTLS/MS
F/F Dim
4.31”
4.31”
4.31”
4.31”
Spirax Sarco
Product
SIB30
SIB30H
F/F Dim
4.3”
4.3”
4.3”
4.3”
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
325
PRODUCT CROSS REFERENCE (CONTINUED)
Steam Traps (continued)
UNIVERSAL CONNECTORS
Watson McDaniel
Manufacturer
Desc.
Universal
Connector
Universal
Connector
w/ Str
Universal
Connector
w/ Str/BD
Universal
Connector
w/ Str
Universal
Connector
w/ Str/BD
Size
1/2”
3/4”
1”
1/2”
3/4”
1”
1/2”
3/4”
1”
1/2”
3/4”
1”
1/2”
3/4”
1”
Product
WU450
WU450S
WU450SB
WU450S-LR
WU450S-RL
WU450SB-LR
WU450SB-RL
Armstrong
F/F Dim Product
2.92”
2.92”
IS-2
5.66”
3.31”
3.31”
6.06”
3.31”
3.31”
6.06”
3.31”
IS-2
3.31”
3.62”
3.31”
3.31”
3.62”
F/F Dim
3.5”
3.5”
3.5”
Spence Nicholson
Product
UMTC
UMTCY
F/F Dim
3.5”
3.5”
3.5”
3.5”
3.5”
3.5”
Spirax Sarco
Product
UPC
F/F Dim
2.4”
2.9”
3.6”
TLV
Product
F/F Dim
3.12”
3.12”
3.75”
3.12”
3.12”
3.75”
FS
FS
3.5”
3.5”
3.5”
USC
USCB
3.2”
3.5”
3.9”
3.2”
3.5”
3.9”
Str = Strainer; BD = Blowdown Valve
UNIVERSAL STEAM TRAP MODULES
Description
Watson
McDaniel
Standard Thermodynamic
Standard Thermodynamic LC
SM Thermodynamic
SM Thermodynamic LC
WD450
WD450L
WD450SM
WD450LSM
SM Thermodynamic LC/HP
Armstrong
Spirax
Sarco
TLV
UMT-TD10
UMT-TD10L
CD-3300
UTD52H
UTD52L
WD600LSM-HP
FP32
UTD52L-HP
Thermostatic
WT450
WT-2000
TT-2000
Float & Thermostatic
WFT450
FT-4000
WSIB450
WSIB450H
WB450
2010
2011
AB-2000
Inverted Bucket
Inverted Bucket HP
Bi-Metallic
Spence
Nicholson
UMT450T
UBP32
UFT14
USBT
USBT
FL21
FL32
FS3
FS5
UIB30
UIB30H
USM21
FX-1
Spence
Nicholson
Spirax
Sarco
TLV
SM = Side Mount; LC = Low Capacity; HP = High Pressure
SANITARY / CLEAN STEAM TRAPS
ENGINEERING
Description
Watson
McDaniel
Armstrong
Thermostatic Repairable, Angle*
Thermostatic Repairable
Thermostatic
FDA400
FDA500
FDA600
CDH
CDS
DS100
BT6
BTM7
SS5P
Thermodynamic
FDA800
NTD230L
BTD52L
P10
* Right Angle (90˚) Ports
326
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PRODUCT CROSS REFERENCE (CONTINUED)
Pressure Motive Pumps
PRESSURE MOTIVE PUMPS
Description
Watson
McDaniel
Armstrong
Cast Iron Mini
PMPM
PT104
Upright Ductile Iron
PMPC
PT3500
P3
Upright Carbon Steel
PMPF
PT400
P3 Classic
Vertical
PMPLS
PMPBP
PT200
PT516
P3 Little Boy
Big Boy
Low Profile Carbon Steel
Hi-Cap 4”x4” Carbon Steel
PUMP-TRAP COMBINATION
1”x1” PMPM & FTE-200
WPT1
11/4”x11/4” PMPM & FTE-200
WPT2
11/2”x11/2” PMPLS & FTE-200
WPT3
2”x2” PMPC & FTE-200
WPT4
3”x2” PMPC & FTE-200
1”, 11/2” PMP w/ Internal Trap
WPT5
PMPT
Spence
Nicholson
Spirax
Sarco
Hoffman
PPEC
PPC
PTC
PPF
PTF
PPEC
PTF4
PCC
PCS
TLV
GP10L
GP10
GP14
GP10F
GP14F
GP10L
Double Duty 4
APT-10
GT10L-1
Double Duty 6
APT-14
APT-14HC
GT10L-1-1/2
Double Duty 4
APT-14
GL10L-1
SKID MOUNTED PUMP SYSTEMS
Watson McDaniel
Armstrong
Spirax Sarco
Pivitrol
Spence Nicholson
Condensate Commander
PMPM Simplex, 6” x 36” Receiver
SPT-104LBRP-6 (4 Gallon)
PMPM Simplex, 8” x 36” Receiver
PMPM Simplex, 10” x 36” Receiver
PMPM Duplex, 21-Gallon Receiver
PMPC Simplex, 6” x 36” Receiver
PMPC Simplex, 8” x 36” Receiver
SPT-104LBRP-8 (7 Gallon)
SPT-104LBRP-10 (10 Gallon)
DPT-104LBRP-12 (22 Gallon)
SPT-200LBRP-6
SPT-200LBRP-8
PMPC Simplex, 10” x 36” Receiver
PMPC Simplex, 21-Gallon Receiver
PMPC Duplex, 21-Gallon Receiver
PMPC Duplex, 75-Gallon Receiver
SPT-200LBRP-10
SPT-200LBRP-16 (30 Gallon)
DPT-200LBRP-12
DPT-200LBRP-24 (85 Gallon)
PTC Simplex, 31 Gallon
PTC Duplex, 31 Gallon
PTC Duplex, 65 Gallon
PMPF Simplex, 10” x 36” Receiver
PMPF Simplex, 21-Gallon Receiver
PMPF Duplex, 21-Gallon Receiver
SPT-400LBRP-10
SPT-400LBRP-16
DPT-400LBRP-12
PTF Simplex, 12 Gallon
PTF Simplex, 31 Gallon
PTF Duplex, 31 Gallon
DPT-400LBRP-24
TPT-400LBRP (24” x 72”)
QPT-400LBRP (24” x 72”)
SPT-3500LBRP-10
SPT-3500LBRP-16
DPT-3500LBRP-12
PTF Duplex, 65 Gallon
PTF Triplex, 135 Gallon
PTF Quadraplex, 185 Gallon
PTC Simplex
PTC Simplex, 31 Gallon
PTC Duplex, 31 Gallon
PMPC Duplex, 75-Gallon Receiver
PMPC Triplex
PMPC Quadraplex
DPT-3500LBRP-24
TPT-3500LBRP
QPT-3500LBRP
PTC Duplex, 65 Gallon
PTC Triplex
PTC Quadraplex
PMPF Simplex, 10” x 36” Receiver
PMPF Simplex, 21-Gallon Receiver
PMPF Duplex, 21-Gallon Receiver
PMPF Duplex, 75-Gallon Receiver
PMPF Triplex
SPT-300LBRP-10
SPT-300LBRP-16
DPT-300LBRP-12
DPT-300LBRP-24
TPT-300LBRP
PTF Simplex
PTF Simplex, 31 Gallon
PTF Duplex, 31 Gallon
PTF Duplex, 65 Gallon
PTF Triplex
Classic Vertical Simplex, 25 Gallon
Classic Vertical Duplex, 25 Gallon
Classic Vertical Duplex, 65 Gallon
Classic Vertical Triplex
QPT-300LBRP
SPT-516RP (24” x 72”)
DPT-516RP (30” x 84”)
PTF Quadraplex
PTF4 Simplex
PTF4 Duplex
Classic Vertical Quadraplex
Big Boy Simplex
Big Boy Duplex
PMPF Duplex, 75-Gallon Receiver
PMPF Triplex, 116-Gallon Receiver
PMPF Quadraplex, 116-Gallon Receiver
PMPC Simplex, 10” x 36” Receiver
PMPC Simplex, 21-Gallon Receiver
PMPC Duplex, 21-Gallon Receiver
PMPF Quadraplex
PMPBP Simplex, 116-Gallon Receiver
PMPBP Duplex, 280-Gallon Receiver
PPEC Simplex
PMPLS
PPEC SImplex, 12 Gallon
PPEC Duplex
PTC Simplex
Classic Vertical Simplex, 25 Gallon
Classic Vertical Duplex, 25 Gallon
Classic Vertical Duplex, 65 Gallon
Classic Vertical Triplex, 115 Gallon
Classic Vertical Quadraplex, 250 Gallon
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
327
PRODUCT CROSS REFERENCE (CONTINUED)
Pressure & Temperature Regulators
PILOT-OPERATED REGULATING VALVES
Watson
McDaniel
Armstrong
Spence
Nicholson
Spirax
Sarco
Hoffman
Fisher
Controls
External Pilot-Operated
Main Valve, Ductile Iron
HD
GP
E
25
2100
92
Pressure Pilot
P
GP-2000
P
SPS
92B
Temperature Pilot
T/TU
OB-2000
T
STPA
Temperature Pilot w/ Dial
TRP
D
T124
T14
T14
A
Q
M
T61/62/63/64
Type N
A
BP
E
AP
Description
Air Pilot
Back Pressure Pilot
Solenoid Pilot
Pneumatic Temperature Controller
Differential Pressure Pilot
A
BP
S
PTL/PTR
DP
GP-2000K
GP-2000R
GP-2000
OBK-2000
SELF-CONTAINED PRESSURE REDUCING VALVES
Watson
McDaniel
Armstrong
Spence
Nicholson
Spirax
Sarco
Hoffman
Watts
Cast Iron,
Steam, Water & Air Service
O-Series
GD30
GD6(N)
D-50
BRV
754
152
Ductile Iron, Piston Actuated
High-Capacity
Steam & Air Service
402/403
Bronze & Cast Iron
Water, Air & Oil Service
B-Series
Description
TLV
GP-1000
GP-18/28
COSR
GP-1
ACOSR
GD-200
D-34
740
223
Trerice
Powers
Spence
Nicholson
Hoffman
11
2000
1140
11
2000
1140R
TEMPERATURE REGULATING VALVES
Description
Direct Acting, Heating
w/ Dial
Watson
McDaniel
175 *
91000
175T **
153 *
153T **
91400
91000
91400
Heating or Cooling,
w/o Dial
W91
91000
11
2000
Heating or Cooling,
w/ Dial
W94
91400
11
2000
Reverse Acting, Cooling
w/ Dial
1140
1140R
1140
1140R
* Watson McDaniel Models 175 & 153 were upgraded to Model W91.
** Watson McDaniel Models 175T & 153T were upgraded to Model W94.
BACK PRESSURE / RELIEF VALVES
Description
Bronze & Cast Iron
Water, Air & Oil Service
Bronze
Water Service
328
Watson
McDaniel
Fisher
Controls
3040
98H
R-Series &
10691
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
PRODUCT CROSS REFERENCE (CONTINUED)
Liquid Drainers
LIQUID DRAINERS
Description
Size
Watson
McDaniel
Armstrong
Spirax
Sarco
Hoffman
High Capacity Float Type
Ductile Iron
1.5”
2”
2.5”
WLDE
JD & L
KD & L
FAB
Float Type
Ductile Iron
1/2”
Cast Iron
3/4”
Carbon Steel
- 2”
- 2”
2.5”
WLD1900
WLDES-300
3/4”
- 4”
WLD600
3/4”
- 4”
WLD601
Stainless Steel
1/2”, 3/4”
CA14
FAI
WLD1400
WLD1800
WLD1800R
Thermodynamic Type
1/2”
Stainless Steel
WLD1703S
Inverted Bucket Type
3/4”, 1”
Cast Iron
WLD1500
21
LS
LS
MS
CA10S
FA
FAB
793
FA450
CA46S
CAS14
11-LD
32-LD
TDA52
656A
1-LD
Air Eliminators, Air Vents & Vacuum Breakers
AIR ELIMINATORS & AIR VENTS
Watson
McDaniel
Description
Float-Type Air Eliminators
Cast Iron
AV813W
AE1800
Stainless Steel
Armstrong
Spirax
Sarco
Hoffman
21AR
11AV
13WS
792
AE1800R
22AV
32AV
AV2000C
TTF-1
Spence
Nicholson
Thermostatic Air Vents
VS204
Stainless Steel
AVT125
Brass
TS-2
SV-12A
TAV
VS206
(Cast Iron)
T202
17C
8C
VACUUM BREAKERS
Description
Stainless Steel
Watson
McDaniel
Spirax
Sarco
WVBSS
VB21
VB14
Brass
Hoffman
62
428 Jones Boulevard • Limerick Airport Business Center • Pottstown PA • 19464 • Tel: 610-495-5131 • Fax: 610-495-5134
www.watsonmcdaniel.com
329
Watson McDaniel reserves the right to change the designs and/or materials of its products without notice.
The contents of this publication are the property of Watson McDaniel and cannot be reproduced by any other
party without written permission. All rights reserved. Copyright © 2010 Watson McDaniel Incorporated.
428 Jones Boulevard
Limerick Airport Business Center
Pottstown PA • 19464
Tel. 610.495.5131
Fax. 610.495.5134
www.watsonmcdaniel.com
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