Control systems Control valves
4
Pressure/temperature limits
Pressure psi g
0
72.5
145
217
290
362
356 302 212 122
A
B
C
Steam saturation curve
32 14
A
B
C
Pressure bar g
A - A Maximum operating pressure on saturated steam
9 bar g (130 psi g)
B - B Maximum operating pressure on size 2"
16 bar g (230 psi g)
C - C Maximum operating pressure on sizes ¼" to 1½"
25 bar g (360 psi g)
DN15 - DN40 (½" - 1½")
PN25
Body design conditions
Screwed BSP or NPT
DN50 (2")
PN16
PMA Maximum allowable pressure
25 bar g
360 psi g
4.1 147
TMA Maximum allowable temperature
180 °C
356 °F
Minimum allowable temperature
-10 °C
14 °F
PMO Maximum operating pressure for saturated steam service
9 bar g @ 180 °C
130 psi g @ 356 °F
TMO Maximum operating temperature
180 °C
356 °F
Minimum operating temperature ( Note: For lower operating temperatures consult Spirax Sarco)
-10 °C
14 °F
Maximum
60 °C
140 °F
Ambient temperature limits
Minimum 14 °F Note: Protection from environmental influences (e.g. UV radiation, humidity, chemicals) is required. Ensure that adequate shelter is provided for outdoor installations. ∆PMX Maximum differential pressure (see page 5) Designed for a maximum cold hydraulic test pressure of: Note: With internals fitted, test pressure must not exceed ∆PMX 1.5 x PMA (PN rating) -10 °C
TI-P373-14 CMGT Issue 7
Page 3 of 12
PF51G BronzePiston Actuated On/Off Valves
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