Control systems Safety valves
4
Pressure/Temperature Limits
Body material and maximum temperature (1) Maximum set pressure (bar g) (2)
Size
Orifice
Class
300 °C SA 216 WCB
425 °C SA 216 WCB
538 °C SA 217 WC9
Inlet
Outlet
300# x 150# 600# x 150# 900# x 150# 1500# x 150# 300# x 150# 600# x 150# 900# x 150# 1500# x 150# 900# x 150# 1500# x 150# 300# x 150# 600# x 150# 900# x 150# 1500# x 150# 300# x 150# 600# x 150# 900# x 150# 1500# x 150# 600# x 150# 900# x 150# 1500# x 150# 300# x 150# 600# x 150# 900# x 150# 1500# x 150# 300# x 150# 600# x 150# 900# x 150# 1500# x 150# 300# x 150# 600# x 150# 900# x 150# 1500# x 150# 300# x 150# 600# x 150# 900# x 150# 1500# x 150#
39.8 79.6
28.2 57.5
18.4 36.9 55.3 82.7 18.4 36.9 55.3 82.7 55.3 82.7 18.4 36.9 55.3 82.7 18.4 36.9 55.3 82.7 36.9 55.3 82.7 18.4 36.9 55.3 82.7 18.4 36.9 55.3 82.7 18.4 36.9 55.3 82.7 18.4 36.9 55.3 82.7
F
1½"
2"
82.7
82.7
39.8 79.6
28.2 57.5
G
1½"
3"
82.7
82.7
1½"
82.7
82.7
39.8 79.6
28.2 57.5
H
3"
2"
82.7
82.7
4.7 67
2"
3"
39.8 79.6
28.2 57.5
2.1/2"
4"
82.7
82.7
J
79.6
57.5
3"
4"
82.7
82.7
39.8 79.6 82.7
28.2 57.5 82.7
2.1/2"
4"
K
39.8 79.6
28.2 57.5
3"
4"
82.7
82.7
39.8 79.6
28.2 57.5
2.1/2"
6"
82.7
82.7
K2
39.8 79.6
28.2 57.5
3"
6"
82.7
82.7
Pressure/Temperature Limits continued on next page
Notes: (1) SA 217 WC9 is the Spirax Sarco standard for high temperature. SA 217 WC6 can be supplied as an alternative on request. (2) The maximum set pressure is the pressure limit for the inlet flange class according to ASME B16.34 / ASME B16.5 or the maximum pressure of the model, whichever is lower.
TI-P276-01 CTLS Issue 1
Page 7 of 15
SV66H Safety Valve
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