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A

D

B

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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.

General information

Product limitations

If the chart is on a single page, with limited space, this layout is used

Pressure / temperature limits

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A-B-C Flanged PN25.

A-D-E Flanged PN16.

Steam

saturation

curve

E

C

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

Maximum design pressure

Maximum design temperature

Minimum design temperature

Maximum operating temperature

As standard

With high temperature packing

With high temperature bolting and packing

PN25

25 bar g @ 120 °C

350 °C @ 17.5 bar g

-20 °C

250 °C @ 22 bar g

300 °C @ 20 bar g

350 °C @ 18 bar g

-10 °C

See relevant actuator TI

37.5 bar g

Minimum operating temperature

Note: For lower operating temperatures consult Spirax Sarco.

Maximum differential pressure

Designed for a maximum cold hydraulic test pressure of

Note: As supplied the test pressure must not exceed 25 bar g

11.4.10

TI-S24-41 CH Issue 3

Page 5 of 5

Pressure / Temperature Limits for Control Valves

T

e

m

p

e

r

a

t

u

r

e

°

C