44
Control systems Pressure reducing/surplussing valves
Pressure/temperature limits
Pressure psi g
0 29 48 87 116 145 174 203 232
150 184
302 363
100
212
Steam saturation curve
50
122
0
32
0
2 4 6 8 10121416
Pressure bar g
The product must not be used in this region.
Body design conditions
PN16
16 bar g @ 120 ° C 232 psi g @ 248 °F 184 ° C @ 10 bar g 363 °F @ 145 psi g
Maximum allowable pressure
Maximum allowable temperature
- 10 ° C
Minimum allowable temperature
14 °F
Maximum operating pressure for saturated steam service
10 bar g
145 psi g
184 ° C @ 10 bar g 363 °F @ 145 psi g
Maximum operating temperature
4.6 22
Minimum operating temperature Note: For lower operating temperatures consult Spirax Sarco.
0 ° C
32 °F
Maximum downstream reduced pressure
9 bar g
131 psi g
Maximum differential pressure
10 bar
145 psi
Designed for a maximum cold hydraulic test pressure of:
24 bar g
348 psi g
Note: With internals fitted, test pressure must not exceed:
16 bar g
232 psi g
TI-P210-01 CTLS Issue 6
Page 2 of 7
BRV71 and BRV73 SG Iron Pressure Reducing Valves
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