Control systems Control valves
4
Pressure/temperature limits
425 200 300 400 100 0 -29
A
Steam saturation curve
B
20 40 60 80 100 120 140
0
136.2
Pressure bar g
The product must not be used in this region.
A - B API Class 800
Body design conditions
API Class 800
PMA Maximum allowable pressure
136.2 bar g @ 38 °C
TMA Maximum allowable temperature
425 °C @ 76.7 bar g
Minimum allowable temperature
-29 °C
PMO Maximum operating pressure for saturated steam service
104 bar g
TMO Maximum operating temperature
425 °C @ 76.7 bar g
4.1 177
Minimum operating temperature
- 29 °C
Note: For lower operating temperatures consult Spirax Sarco. Designed for a maximum cold hydraulic test pressure of:
204.3 bar g
Dimensions/weights (approximate) in mm and kg Screwed, socket weld and butt weld Size A B B1 C
C
Weight
½ "
85
102
118
95
1.2
B1
B
Safety information, installation and maintenance For full details see the Installation and Maintenance Instructions (IM-P174-04) supplied with the product. Caution Valve keys should not be used to operate these valves. Installation note Install the valve in the direction of flow given by the arrow on the body. The valve can be installed in any plane but not with the handwheel below the valve body. Disposal The product is recyclable. No ecological hazard is anticipated with the disposal of this product, providing due care is taken.
A (Screwed/Socket weld and butt weld)
How to order Example: 1 off Spirax Sarco ½ " PV4 piston valve having screwed NPT connections. The valve is to be supplied with EN 10204 3.1 certification. The Kv is to be 3.0.
TI-P118-06 CMGT Issue 7
Page 3 of 4
PV4 Piston Valve
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