General information Product limitations
7
If the chart is on a single page, with limited space, this layout is used
Pressure / temperature limits
A
D
B
The product must not be used in this region. High temperature packing is required for use in this region. The product should not be used in this region or beyond its operating range as damage to the internals may occur.
Steam saturation curve
E
C
A-B-C Flanged PN25. A-D-E Flanged PN16.
Pressure bar g
Note: As standard the XYZ series two port control valves are supplied with PTFE stem seal and metal-to-metal seats.
Body design conditions
PN25
Maximum design pressure
25 bar g @ 120 °C
Maximum design temperature
350 °C @ 17.5 bar g
Minimum design temperature
-20 °C
As standard
250 °C @ 22 bar g
Maximum operating temperature
With high temperature packing
300 °C @ 20 bar g
With high temperature bolting and packing
350 °C @ 18 bar g
Minimum operating temperature Note: For lower operating temperatures consult Spirax Sarco.
-10 °C
Maximum differential pressure
See relevant actuator TI
Designed for a maximum cold hydraulic test pressure of Note: As supplied the test pressure must not exceed 25 bar g
37.5 bar g
7.4 9
11.4.10
TI-S24-41 CH Issue 3
Page 5 of 5
Pressure / Temperature Limits for Control Valves
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