A

Pipeline ancillaries

Piston valves

Steam

saturatio

curve

n

B

A

7.3.3

Steam

saturation

curve

B

Pressure / temperature limits

PV4

A - B

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Pressure bar g

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The product must not be used in this region.

Screwed, socket weld and butt weld

Body design conditions

PMA Maximum allowable pressure

TMA Maximum allowable temperature

Minimum allowable temperature

PMO Maximum operating pressure for saturated steam service

TMO Maximum operating temperature

Minimum operating temperature

Note: For lower operating temperatures consult Spirax Sarco

Designed for a maximum cold hydraulic test pressure of

API Class 800

136 bar g @ 38 °C

425 °C @ 76 bar g

-29 °C

101 bar g

425 °C @ 76 bar g

-29 °C

205 bar g

PV6

A - B

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The product must not be used in this region.

Screwed, socket weld and butt weld

Pressure bar g

Body design conditions

PMA Maximum allowable pressure

TMA Maximum allowable temperature

Minimum allowable temperature

API Class 800

132 bar g @ 0 °C

538 °C @ 67 bar g

-29 °C

84 bar g

538 °C @ 67 bar g

-29 °C

198 bar g

PMO Maximum operating pressure for saturated steam service

TMO Maximum operating temperature

Minimum operating temperature

Note: For lower operating temperatures consult Spirax Sarco

Designed for a maximum cold hydraulic test pressure of

Page 2 of 4

TI-P118-06 ST Issue 3

PV4 and PV6 Piston Valves

T

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m

p

e

r

a

t

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°

C

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