Spirax Sarco Spira-trol K Series, Installation And Maintenance Instructions Manual

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IM-S24-42 CTLS Issue 10
23
300
250
200
150
100
50
0
-29
572
500
400
300
200
100
0
-20
0 4 8 12 16
0 50 100 150 200 232
425
400
300
200
100
0
-29
797
600
400
200
0
-20
0 5 10 15 19.6
0 50 100 150 200 250 284
Bellows C
Bellows D
Te
mp
er
atu
re
°C
Pressure bar g
Te
mp
er
atu
re
°C
Pressure bar g
Pressure bar g
Pressure bar g
Te
mp
era
tu
re
°F
Te
mp
era
tu
re
°F
Steam
saturation
curve
Steam
saturation
curve
The product must not be used in this region.
Notes:
1.
Where the process fluid temperature is sub-zero and the ambient temperature is below +5 °C (41 °F),
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 above.
3. As standard the KEA, KFA, KLA series two-port control valves are supplied with the PTFE stem sealing
option.
Body design conditions ASME 150 and ASME 300
Maximum design
pressure
ASME 150 (6" to 12" only) 19.6 bar g @ 38 °C (284 psi g @ 100 °F)
ASME 300 51.1 bar g @ 38 °C (740 psi g @ 100 °F)
Maximum design temperature 425 °C (800 °F)
Minimum design temperature -29 °C (-20 °F)
Maximum operating
temperature
PTFE soft seat (G) 200 °C (392 °F)
Standard packing PTFE chevron
250 °C (482 °F) PEEK seat (K and P)
Extended bonnet (E) with PTFE chevron
Graphite packing (H)
425 °C (800 °F)
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 (572 °F).