Watts Water Pressure Reducing Valve Specification Sheet

Watts Water Pressure Reducing Valve Specification Sheet
ES-LFN55B
For Residential and Commercial Applications
Job Name
–––––––––––––––––––––––––––––––––––––––––––
Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location –––––––––––––––––––––––––––––––––––––––––
Approval
Engineer –––––––––––––––––––––––––––––––––––––––––––––
Contractor’s P.O. No. –––––––––––––––––––––––––––––––––––
Approval –––––––––––––––––––––––––––––––––––––––––––––
Representative
LEAD FREE*
Series LFN55B-M1
–––––––––––––––––––––––––––––––––––––––––––––
––––––––––––––––––––––––––––––––––––––––
N55BU-M1
Water Pressure Reducing Valves**
Sizes: 1⁄2" – 1" (15 – 25mm)
Series LFN55B-M1 Water Pressure Reducing Valves are designed to reduce
incoming water pressure to a sensible level to protect plumbing system
components and reduce water consumption. The LFN55B features Lead
Free* construction to comply with Lead Free* installation requirements. This
series is suitable for water supply pressures up to 400psi (27.6 bar) and may
be adjusted from 25 to 75psi (172 – 517 kPa). The standard setting is 50psi
(345 kPa). All parts are quickly and easily serviceable without removing the
valve from the line. The standard bypass feature permits the flow of water
back through the valve into the main when pressures, due to thermal expansion on the outlet side of the valve, exceed the pressure in the main supply.
Features
• Double union inlet & outlet connections (option DU)
• Integral stainless steel strainer
• Thermoplastic seat
• Lead Free* brass body construction
• Serviceable in line
• Bypass feature controls thermal expansion pressure***
• Sealed spring cage on all models for accessible outdoor or pit installations
Reinforced
Diaphragm
Threaded, solder,
PEX, CPVC, or QC ends
Integral Stainless
Steel Strainer
Models
LFN55B-M1
LFN55BU-M1
LFN55BU-S-M1
LFN55BU-QC-M1
LFN55BDU-M1
LFN55BDU-S-M1
LFN55BDU-PEX-M1
LFN55BDU-CPVC-M1
LFN55BDU-QC-M1
NPT threaded female inlet x NPT female outlet
NPT threaded union inlet x NPT female outlet
Solder union inlet x NPT female outlet
Single Union – QC union inlet
Double Union – NPT threaded union female
inlet and outlet
Double Union – Solder union inlet and outlet
Double Union – PEX union inlet and outlet
Double Union – CPVC union inlet and outlet
Double Union – QC union inlet and outlet
Thermal Expansion
Bypass
Thermoplastic Seat
Specifications
Standard Specifications: A Water Pressure Reducing Valve with integral
strainer shall be installed in the water service pipe near its entrance
to the building where supply main pressure exceeds 60psi (413 kPa) to
reduce it to 50psi (345 kPa) or lower. The water pressure reducing valve
shall be constructed using Lead Free* materials. Lead Free* regulators
shall comply with state codes and standards, where applicable, requiring
reduced lead content. The valve shall feature a Lead Free* brass body suitable for water supply pressures up to 400psi (27.6 bar). Provision shall be
made to permit the bypass flow of water back through the valve into the
main when pressures, due to thermal expansion on the outlet side of the
valve, exceed the pressure in the main supply. Water Pressure Reducing
Valve with builtin bypass check valves will be acceptable. Approved valve
shall be listed to ASSE 1003 and IAPMO and certified to CSA B356. Valve
shall be a Watts Series LFN55B-M1.
*The wetted surface of this product contacted by consumable
water contains less than one quarter of one percent (0.25%) of
lead by weight.
**A water saving test program concluded that reducing the supply
pressure from 80-50psi (551-345 kPa) resulted in a water savings of
30%.
***The bypass feature will not prevent the pressure relief valve from
opening on the hot water supply system with pressure above
150psi (10.3 bar).
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials
without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Materials
Capacity
Lead Free* brass
Thermoplastic
Bronze
Stainless steel
Reinforced EPDM
Elastomer
Pressure Drop
Body:
Seat:
Cage:
Integral Strainer:
Diaphragm:
Valve Disc:
Pressure — Temperature
Temperature Range: 33°F – 180°F (0.5°C – 82°C)
Maximum Working Pressure: 400psi (27.6 bar)
Adjustable Reduced Pressure Range: 25 – 75psi (172 – 517 kPa)
Standard Reduced Pressure Setting: 50psi (345 kPa)
Standards
kPa
psi
0
0
34.5
5
68.9
10
103.4
15
137.8
20
172.3
25
Meets requirements of ASSE Standard 1003; (ANSI A112.26.2)
and CSA Standard B356. Certified by NSF to ANSI/NSF Standard 61-8
(LF N55B-M1 Models only). Listed by IAPMO and City of Los Angeles.
0
0
10
37.3
20
75.7
30
113.6
40 gpm
151.4 lpm
Flow
Options
Add Suffix
G
GG
LP
FNPT
Gauge tapping
Gauge tapping and 160psi (11.0 bar) gauge
Low Pressure Range 10-35psi (69-241 kPa)
Dimensions – Weights
ENPT
FSWEAT
ESWEAT
FPEX
C
FEMALE NPT THREAD
BOTH ENDS OF BODY
EPEX
D
FCPVC
A
A+E
A+E+E
G
ECPVC
ABOVE VALVE SHOWN WITH SINGLE NPT UNION CONNECTION ON INLET
FQC
VALVES MAY BE ORDERED WITH 0,1,OR 2 UNION CONNECTIONS USING ANY
COMBINATION OF NPT, SOLDER, PEX OR CPVC CONNECTIONS REQUIRED
“F” DIMENSIONS ARE APPROXIMATE ENGAGEMENT LENGTHS.
EQC
SIZE (DN)
DIMENSIONS
A
in. mm
in.
C
mm
in.
12
mm
D
in. mm
⁄ 15 37⁄16 88 49⁄16 116 111⁄16 43
3⁄4 20 37⁄16
88 49⁄16 116 111⁄16 43
1 25 41⁄8 105 49⁄16 116 111⁄16 43
58
⁄
5⁄8
3⁄4
A Watts Water Technologies Company
ES-LFN55B 1032
WEIGHT
ENPT
ESWEAT
EPEX
ECPVC
EQC
FNPT
FSWEAT
FPEX
FCPVC
FQC
G
in.
mm in.
mm in.
mm in.
mm in. mm in. mm in.
mm in.
mm in.
mm in.
mm in.
mm lbs.
16
16
20
58
⁄
7⁄8
1
15 13⁄16
21 15⁄16
26 11⁄8
21 9⁄16
24 13⁄16
29 11⁄16
15 17⁄16 36 1⁄2
21 19⁄16 40 9⁄16
26 111⁄16 43 11⁄16
13
14
17
12
⁄
3⁄4
15⁄16
13
19
23
58
⁄
5⁄8
13⁄16
16
16
21
12
⁄
3⁄4
15⁄16
13 11⁄2
18 111⁄16
23 13⁄4
38 21⁄4
42 21⁄4
45 21⁄4
57
57
57
2
2
3
kgs.
91
91
1.36
.
.
USA: No. Andover, MA • Tel. (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Burlington, ONT. • Tel. (905) 332-4090 • Fax: (905) 332-7068 • www.wattscanada.ca
© 2010 Watts
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising