44
Control systems Self-acting controls
Pressure/temperature limits
Pressure psi g
0
72
145
217
290
363
500 449 392 302 212 122 32
Steam saturation curve
Pressure bar g
The product must not be used in this region.
Body design conditions
PN25
25 bar g @ 120 °C (363 psi g @ 248 °F)
Maximum design pressure
232 °C (450 °F)
Maximum design temperature
Fitted directly to an actuator
-10 °C (14 °F)
4.5 58
Minimum design temperature
232 °C (450 °F) 0 °C (32 °F)
Maximum operating temperature
Fitted directly to an actuator
Minimum operating temperature Note : For lower operating temperatures consult Spirax Sarco
Size
DN15 (1/2")
DN20 (3/4")
DN25 (1")
17.2 (250) 12.0 (174)
10.3 (150) 7.0 (102)
6.8 (99) 4.7 (68)
SB
Maximum differential pressure bar (psi)
SBRA
38 bar g (551 psi g)
Designed for a maximum cold hydraulic test pressure of
Kv values
DN15 (1/2")
DN20 (3/4")
DN25 (1")
For conversion: Cv (UK) = Kv x 0.963 Cv (US) = Kv x 1.156
2.58
3.86
6.80
Capacities For saturated steam sizing capacities, see TI-GCM-08. For water sizing capacities, see TI-GCM-09.
TI-P044-01 CTLS Issue 11
Page 2 of 5
SB and SBRA Gunmetal Self-acting Temperature Control Valves
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