Control systems Pressure reducing/surplussing valves
4
Pressure/temperature limits
100 150 200 225
The product must not be used in this region.
Steam saturation curve
0 50
5
10
15
20
25
0
Pressure bar g
Body design conditions
PN25
25 bar g @ 120 ° C 225 ° C @ 21 bar g
Maximum design pressure
Maximum design temperature
0 ° C
Minimum design temperature
Maximum operating pressure for saturated steam service
21 bar g
225 ° C @ 21 bar g
Maximum operating temperature
Minimum operating temperature Note: For lower operating temperatures consult Spirax Sarco.
0 ° C
Designed for a maximum cold hydraulic test pressure of:
40 bar g
4.6 91
Note: With internals fitted, test pressure must not exceed:
25 bar g
Dimensions/weights (approximate) in mm and kg A B Weight WS4 127 157 1.6 WS4-3 127 365 5.4
A
B
2
WS4-3
4
B
WS4
1
3
A
Available spare Part No. 3 - Coupling
How to order Example: 1 off Spirax Sarco " WS4 water seal pot having screwed BSP connections.
TI-S12-03 CTLS Issue 6
WS4 Water Seal Pot
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