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Control systems Control valves
Pressure / temperature limits - KE63 (Stainless steel)
F A
E D
C
B
Steam saturation curve
D C
B
F
E
Pressure bar g
The product must not be used in this region. High temperature packing is required for use in this region.
High temperature bolting and packing is required for use in this region
A - B Flanged EN 1092 PN40.
A - C Flanged JIS/KS 20K.
A - D Flanged EN 1092 PN25.
4.1 48
A - E Flanged EN 1092 PN16.
A - F Flanged JIS/KS 10K.
Notes: 1. Where the process fluid temperature is sub-zero and the ambient temperature is below +5 °C, the external moving parts of the valve and actuator must be heat traced to maintain normal operation. 2. When selecting a valve with a bellows sealed bonnet, the pressure / temperature limits of the bellows must be read in conjunction with the valve pressure / temperature limits shown in table below.
Body design conditions
PN40
Maximum design pressure
40 bar g @ 50 °C
Maximum differential pressure design
Full PEEK seat (P)
19 bar
Maximum design temperature
400 °C
Minimum design temperature
-10 °C
PEEK soft seat (P)
220 °C
Standard packing PTFE chevron
250 °C
Maximum operating temperature
Extended bonnet (E) with PTFE chevron High temperature packing (H)
400 °C
Extended bonnet (E) with graphite packing
Note: We recommend that an extended bonnet (E) with graphite packing is used where valve operation is above 300 °C.
TI-S24-73 CTLS Issue 4
Page 8 of 15
Spira-trol TM Two-port Control Valves K Series DN125 to DN300 and 6" to 12"
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