Control valves
Control valves
Pressure / temperature limits - LE31 and LE33 cast iron valve body
300
Note:
Screwed BSP
Flanged EN 1092 PN16
250
When the process fluid temperature
200
is sub-zero and the ambient
150
temperature is below +5 °C, the
100
external moving parts of the valve
50
and actuator must be heat traced
0
to maintain normal operation.
-10
0
2
4
6
8
10
12
14
16
Pressure bar g
Flanged JIS / KS 10
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
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.
PN16
16 bar g @ 120 °C
300 °C @ 9.6 bar g
7 bar
7 bar
19 bar
-10 °C
250 °C
200 °C
250 °C
300 °C
250 °C
300 °C
300 °C
-10 °C
24 bar g
TI-S24-70 CH Issue 6
Spira-trol
TM
Two-port Control Valves EN Standard LE, LF and LL DN15 to DN100 and ASME Standard LEA, LFA and LLA 1⁄2" to 4"
Maximum cold hydraulic test pressure of:
Steam
saturation
curve
PTFE soft seat (G)
PEEK soft seat (K)
Full PEEK seat (P)
Standard packing PTFE chevron
PTFE soft seat
PEEK soft seat
Graphite packing
Extended bonnet with PTFE chevron
Extended bonnet with graphite packing
Bellows
Note: For lower operating temperatures
- Option P
- Option G
- Option K
- Option H
- Option E
- Option E
- Option D
or N
or P
Steam
saturation
curve
consult Spirax Sarco
See relevant actuator Technical Information sheet.
Page 7 of 18
4.1.48
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