User manual | PT-516 High Capacity Pump Trap

PT-516 High Capacity Pump Trap
Effective recovery and return of hot condensate are essential to
overall plant efficiency while conserving energy. Large amounts
of condensate provide the best opportunities to save energy.
The Armstrong PT-516 High Capacity Pump Trap is the low
maintenance, non-electric solution to moving large amounts
of condensate and other liquids from low points, low pressures
or vacuum spaces to an area of higher elevation or pressure.
Condensate can be returned at temperatures well above the
200°F (93°C) limit of conventional electric pumps without the
headaches of leaking seals or cavitation.
Condensate Recovery
Equipment
Features
• Economical non-electric operation. Uses inexpensive steam air
or inert gas.
• Low-maintenance operation. No leaking seals, impeller or motor
problems means lower maintenance. No NPSH issues.
• Lower installation costs. Single trade required for installation and
maintenance.
• Peace of mind. Standard unit is intrinsically safe—explosion-proof.
• Durable construction. ASME code-stamped carbon steel body
vessel.
• Corrosion resistance. Internals are all stainless steel for corrosion
resistance and long life.
• Heavy-duty springs. Springs are made from long-lasting Inconel
X-750.
• Efficiency. A closed loop means no motive or flash steam is lost.
All valuable Btu’s are captured and returned to the system.
• Safety. The pump can be used in flooded pits without fear of
electrocution or circuit breaker defaults.
• Externally removable/replaceable seats. Seats can be replaced
or cleaned without removing the mechanism assembly.
B
C
1/4" NPT
Vent
Motive
U
Withdrawal Length
18" or 457 mm
F
1-1/2" NPT
2" NPT
For a fully detailed certified drawing, refer to FH1367.
Outlet
Inlet
PT-516 High Capacity Pump Trap Physical Data
R
3/4" Drain
D
P
T
E
3/4" Hole
8 Places
PT-516 Capacity Conversion Factors for Other Fill Heads
PT-516
222
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
0
0
6
152
12
305
16
406
24
610
36
914
0.7
0.75
mm
4 150# ANSI Flg.
100 150# ANSI Flg.
Outlet Connection
4 150# ANSI Flg.
100 150# ANSI Flg.
Motive Connection
2 NPT
50 NPT
Vent Connection
2 NPT
50 NPT
Gauge Glass Conn.
H
Fill Head
in
Inlet Connection
0.8
0.85
1.0
1/2 NPT
15 NPT
“B”
62
1,574
“C”
36
914
“D”
19-1/16
484
“E”
20
508
“F”
22
559
“H”
48
1,219
“P”
1-3/4
44
“R”
8-3/4
222
“T”
28
711
“U”
4
100
Weight
807
366
Number of Bolts
12
12
Maximum Operating Pressure on standard unit: 150 psig (10 bar).
For higher pressure, consult factory.
Maximum Allowable Pressure (standard vessel deisgn): 150 psig @ 500°F (10 bar @ 277°C).
300 psi (21 bar) vessel available upon request.
1.08
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
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PT-516 High Capacity Pump Trap
Typical Applications
PT-516 High-Capacity Pump Trap Materials
• Low pressure heating systems
• Process heat exchanger or coils with modulating steam control
• Remote installations (tracing, tank farms or remote coils)
• Systems under vacuum
• Hazardous (explosion proof) areas
• Caustic environments
• Sumps or submersed areas
Name of Part
Description
Cap, Body, Bolting
Fabricated steel 150 psi ASME Sec. Vlll design “U”
stamp coded
Cap Gasket
Stainless steel spiral wound
Inlet Valve Assembly
Stainless steel
Vent Valve Assembly
Stainless steel
Mechanism Assembly:
Frame, Float and Spring
Stainless steel
Armstrong PT-516 Pump Trap Sizing and Selection
PT-516 Pump Trap Capacities
Motive Pressure
psig
15
25
35
50
60
70
75
100
125
150
25
35
50
60
70
75
100
bar
1.0
1.7
2.5
3.5
4
4.5
5
7
8.5
10.34
1.7
2.5
3.5
4
4.5
5
7
125
150
8.5
10.34
Total Lift or Back
Pressure
psig
bar
5
0.34
15
1
4" x 4" Connections 24" Fill Head
Steam Motive
lb/hr
kg/hr
28,962
13,137
37,162
16,857
42,563
19,307
48,288
21,903
51,214
23,231
53,688
24,138
54,796
24,855
59,414
26,950
62,995
28,575
65,922
29,902
36,720
16,656
40,611
18,421
45,196
20,501
47,740
21,655
50,005
22,682
51,054
23,159
55,675
25,254
59,552
62,923
27,013
28,542
Air Motive
lb/hr
kg/hr
57,619
26,136
61,911
28,083
64,738
29,365
67,735
30,725
69,267
31,420
70,562
32,007
71,142
32,270
73,559
33,366
*
*
*
*
50,783
23,035
54,293
24,627
58,013
26,315
59,915
27,177
61,523
27,907
62,243
28,233
65,243
29,594
*
*
*
*
NOTES: Published capacities above are based on actual steam testing using a
minimum 200°F condensate. Published capacities are based on the use of external
check valves supplied by Armstrong.
*Consult factory.
Motive Pressure
psig
35
50
60
70
75
100
125
150
50
60
70
75
100
125
150
70
75
100
125
150
100
125
150
bar
2.5
3.5
4
4.5
5
7
8.5
10.34
3.5
4
4.5
5
7
8.5
10.34
4.5
5
7
8.5
10.34
7
8.5
10.34
Total Lift or Back
Pressure
psig
bar
25
1.5
40
2.75
60
4
80
5.5
4" x 4" Connections 24" Fill Head
Steam Motive
lb/hr
kg/hr
29,212
13,251
33,413
15,156
35,672
16,181
37,646
17,076
38,548
17,485
42,454
19,257
45,649
20,706
*
*
26,210
11,889
27,353
12,407
28,319
12,846
28,752
13,042
30,555
13,860
31,954
14,494
33,097
15,013
25,973
11,781
26,373
11,963
28,042
12,720
29,336
13,307
30,394
13,787
23,892
10,837
24,231
10,991
24,570
11,145
Air Motive
lb/hr
kg/hr
46,238
20,973
50,962
23,116
53,376
24,211
55,418
25,138
56,313
25,544
60,141
27,280
*
*
*
*
41,244
18,708
44,028
19,971
46,382
21,039
47,435
21,517
51,828
24,022
*
*
*
*
32,026
14,527
33,514
15,202
40,951
18,575
*
*
*
*
34,893
15,827
*
*
*
*
Condensate Recovery
Equipment
NOTES: 300 psi ASME vessel available upon request. PT-516 available in all stainless
steel. Consult factory.
Options
External check valves required for use of pumping trap.
• Inlet/Outlet Check Valve
CS/SS Wafer Style or All Stainless Steel Wafer Style
• Bronze Gauge Glass Assembly
• Removable Insulation Jacket
• Digital Cycle Counter
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
North America • Latin America • India • Europe / Middle East / Africa • China • Pacific Rim
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223
Reservoir Sizing — DD-12/PT-516 Series High Capacity
Either a closed reservoir pipe or a vented receiver is required for
proper condensate storage during the pump-down cycle of the
pumping trap. Refer to the tables for sizing.
PT-516 Inlet Reservoir Pipe Sizing for Closed Systems
Condensate
Load lb/hr
Reservoir Pipe Diameter (in)
10
12
16
20
Length of Pipe (feet)
8
up to
For Closed Reservoir Piping
1.Determine condensate load.
Example 30,000 lb/hr:
-- Reference the Inlet Reservoir Pipe table top right. Find
the 30,000 lb/hr condensate load in column one. Move across
the columns to find the proper pipe sizing.
10,000
6-1/2
6
5
3
2
20,000
12
11-1/2
10
7
4
30,000
12
10-1/2
9
6
4
40,000
17
14
12
8
6
16
13
9
6
15
11
8
15
10
Condensate Recovery
Equipment
50,000
For Vented Receiver Sizing
60,000
1.Determine the pressure from where the condensate is being discharged.
2.Determine condensate load.
-- Reference the chart below to find the pressure that corresponds
with the discharge condensate pressure. For this example, use
15 psig.
-- Follow 15 psig to where it intersects the “0” psig curve. Move
to the left from intersecting lines for the percentage of flash that
will be created. For this example, it will be 3%.
-- Multiply the 3% by the condensate load. For this example, it is
30,000 lb/hr. Thus, 30,000 x .03 = 900 lb/hr of flash steam.
Using the Vented Receiver table bottom right, find the amount of
flash steam in column one. Follow the table across to determine the
sizing of the vented receiver.
Percentage of Flash Steam
Percentage of Flash Steam Formed
When Discharging Condensate to Reduce Pressure
24
70,000
NOTE: When BP/MP is less than 50%, the reservoir diameters above can be reduced
by 1/2" (15 mm). When draining condensate from a single piece of equipment in a
closed system, to achieve maximum energy efficiency (see Closed System figure
on page 234) a reservoir should be installed horizontally above and ahead of the
pump trap. Sufficient reservoir volume is required above the filling head level to hold
condensate during the pump trap discharge cycle. The table above shows the minimum
reservoir sizing, based on the condensate load, to prevent equipment flooding during the
pump trap discharge cycle.
PT-516 Vented Receiver for an Open System
Flash Steam
lb/hr
up to
Receiver Diameter Receiver Length
(in)
(in)
Vent Line
Diameter (in)
1,000
16
60
6
2,000
20
60
8
3,000
24
60
8
4,000
26
60
10
5,000
28
60
10
6,000
30
72
12
7,000
32
72
12
8,000
36
72
14
NOTE: When draining from single or multiple pieces of equipment in an open system,
a vented receiver should be installed horizontally above and ahead of the pump trap
(see Open System figure on page 234). In addition to sufficient holding volume of
the condensate above the fill head of the pump trap to hold the condensate during
the pump trap cycle, the receiver must also be sized to allow enough area for flash
steam and condensate separation. An overflow could also be added when required.
The minimum recommended water seal is 12" (305 mm). The table above shows
proper receiver tank sizing based on flash steam present. See chart left to calculate
the percentage (%) of flash steam at a given pressure drop.
3%
15
PSI from which condensate is discharged
NOTE: Back pressure = 0 psig
224
Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit armstronginternational.com for up-to-date information.
North America • Latin America • India • Europe / Middle East / Africa • China • Pacific Rim
armstronginternational.com
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