Pipeline ancillaries Bellows sealed stop valves
10
Pressure/temperature limits (ISO 6552)
Pressure psi g
0
72.5 145 217 290 362 435 507 580 752 572 392 212 32 Steam saturation curve
PN40
Pressure bar g
The product must not be used in this region.
Body design conditions
PN40
PMA Maximum allowable pressure
40 bar g @ 0 °C
580 psi g @ 32 °F
TMA Maximum allowable temperature
400 °C @ 24 bar g
752 °F @ 348 psi g
Minimum allowable temperature
-10 °C
14 °F
PMO Maximum operating pressure for saturated steam service
30.4 bar g
441 psi g
TMO Maximum operating temperature
400 °C @ 24 bar g
752 °F @ 348 psi g
Minimum operating temperature ( Note: For lower operating temperatures consult Spirax Sarco)
-10 °C
14 °F
Designed for a maximum cold hydraulic test pressure of:
60 bar g
870 psi g
Pressure psi g
0
145
290
435
580
739
797 572 392 212 32 -20.2
7.1.27
ANSI 300
Steam saturation curve
Pressure bar g
The product must not be used in this region.
10.1 34
Body design conditions
ANSI 300
PMA Maximum allowable pressure
51 bar g @ 37.7 °C 740 psi g @ 99.9 °F
TMA Maximum allowable temperature
425 °C @ 28 bar g
797 °F @ 406 psi g
Minimum allowable temperature
-29 °C
-20.2 °F
PMO Maximum operating pressure for saturated steam service
41.6 bar g
603 psi g
TMO Maximum operating temperature
425 °C @ 28 bar g
797 °F @ 406 psi g
Minimum operating temperature ( Note: For lower operating temperatures consult Spirax Sarco)
-29 °C
-20.2 °F
Designed for a maximum cold hydraulic test pressure of:
77 bar g
1117 psi g
TI-P184-08 CMGT Issue 10
Page 2 of 5
Spirax SafeBloc TM DBB3 Double Block and Bleed Bellows Sealed Stop Valve
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