Pressure psi g
Please note - Bellows sealed valves
(Option D) are limited to A - A.
Note:
When 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.
A
Steam
saturation
curve
A
Pressure bar g
Pressure psi g
Steam
saturation
curve
Pressure bar g
The product must not be used in this region.
High temperature graphite packing is required for use in this region. Note: Soft seated valves cannot be used in this region.
PTFE soft seated valves are limited to a maximum operating temperature of 200 °C (482 °F).
Body design conditions
Maximum design pressure
Maximum design temperature
Maximum differential pressure
design
Minimum design temperature
Maximum operating temperature
See the Spira-trol
TM
selection
guide on page 18 for the full list
of available options
Minimum operating temperature
Maximum differential pressures
PTFE soft seat (G)
P
PTFE soft seat
PEEK soft seat
Graphite packing
19.6 bar g @ 38 °C
425 °C @ 5.5 bar g
7 bar
7 bar
19 bar
-29 °C
250 °C
200 °C
250 °C
425 °C
250 °C
425 °C
300 °C
-29 °C
29.5 bar g
ASME 150
(285 psi g @ 100 °F)
(800 °F @ 80 psi g)
(-20 °F)
(482 °F)
(392 °F)
(482 °F)
(800 °F)
(482 °F)
(800 °F)
(572 °F)
(-20 °F)
(428 psi g)
EEK soft seat (K)
Full PEEK seat (P)
Standard packing PTFE chevron
-
-
-
-
-
-
-
OptionPorN
Option G
Option K or P
Option H
Option E
Option E
Option D
Extended bonnet with PTFE chevron
Extended bonnet with graphite packing
Bellows (A - A on the LEA43 chart)
Note: For lower operating temperatures consult Spirax Sarco
See relevant actuator Technical Information sheet.
Maximum cold hydraulic test pressure of:
For valve operating above 572 °F (300 °C) extended bonnet is recommended for actuator suitability.
TI-S24-70 CH Issue 6
TM
Page 11 of 18
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