Pump Trap
PT
The pump trap “PT”, is recommended in the transfer of high
temperature liquid such as condensate, oils and other liquids, ideal for condensate removal from vented receivers and drainage.
The “PT” can drain a closed vessel under vacuum or pressure; it can be operated by steam, compressed air or gas.
No electric power or additional level controls.
Compact design.
Liquid flow into the “PT”, through an inlet check valve, lifting a float which, at the upper limit of its travel open the supply valve which allow steam or compressed air to enter the “PT” body.
Pressure in the “PT” builds up until just sufficient to overcome back pressure.
The pressurized liquid open the outlet check valve and discharge
commences.
When the float reaches the minimum level it closes the steam or
compressed air supply valve and opens the vent, allowing the liquid to fill the “PT” again.
 
 
LIMITING CONDITIONS (according to ISO 6552)
Minimum density 0.80 Kg/dm3
Maximum viscosity 5° Engler
Supply operating pressure from 0.5 to 8.6 bar
PMA: max allowable pressure 25 bar
IMA: max allowable temperature 250 °C
PMO: max operating pressure 8.6 bar
TMO: max operating temperature 200 °C
 
 
 
POS
DESCRIPTION
MATERIALS
SPARES
1 Body Carbon Steel  
2 Cover Carbon Steel  
3 Gasket Aramide fiber X
4 In- valve S.S. 304 X
5 Exhaust valve S.S. 304 X
6 Lever S.S. 304 X
7 Ball float S.S. 304 X
8 Spring mechanism S.S. X
9 Check valve A 105  
10 Bolts B.7  
 
 
 
   
FLOW RATE CAPACITY IN Kg/h
OPERATING INLET
PRESSURE
bar
TOTAL LIFT OR BACK
PRESSURE
bar
CAPACITY IN Kg/h
PUMP SIZE DN
1" 11/2" 2" 3" x 2"
0.34 0.14 725 1225 1725 2810
0.69
0.69
0.34
0.14
815
905
1315
1485
1860
2315
3170
3945
1.7
1.7
1.7
1.0
0.69
0.34
905
950
1040
1495
1770
1905
2310
2340
2785
3945
4550
4715
3.4
3.4
3.4
2.8
1.7
0.69
905
1040
1090
1450
1680
1815
2175
2630
2905
3720
4440
5090
5.2
5.2
5.2
4.1
2.8
1.0
905
1090
1135
1540
1725
1905
2270
2630
2995
3865
4440
5080
6.9
6.9
6.9
4.1
2.8
1.0
1000
1090
1180
1630
1905
2065
2630
2765
2995
4490
4715
5080
8.6
8.6
8.6
4.1
2.8
1.0
1040
1090
1180

1765
2040
2130

2720
2850
3040
4625
4805
5130

 

 
CAPACITY CORRECTION FACTOR FOR GASES
OTHER THAN STEAM
% BACK PRESS.VS.
MOTIVE PRESS. (BP/MP)
10% 30% 50% 70% 90%
CORRECTION FACTOR 1.04

1.08

1.12 1.18 1.28

 

 

 

 

 

CAPACITY MULTIPLYING FACTOR FOR OTHER
FILLING HEADS
FILLING HEAD PUMP SIZE
1" 11/2" 2" 3" x 2"
0.15 0.7 0.7 0.7 0.9
0.3 1.0 1.0 1.0 1.0
0.6 1.2 1.2 1.2 1.08
0.9 1.35 1.35 1.35 1.2

DIMENSIONS (mm)
SIZE
DN
A B C D E WEIGHT
Kg
1" 740 520

100

640 240 71
11/2" 795 535 100 640 240 72.8
2" 860 550 100 640 240 74.5
3" x 2" 935 580 100 640 240 78.5
 


Installation

 

 
FLOATING BALL