Control valves

Control valves

Steam

saturation

curve

A

4.1.53

A

Steam

saturation

curve

Pressure/temperature limits - LEA63 stainless steel valve body

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Pressure psi g

Please note - Bellows sealed valves

(Option D) are limited to A - A.

Flanged

ASME class 150

Flanged

JIS / KS 10

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Note:

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When the process fluid temperature

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temperature is below +5 °C (41 °F),

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the external moving parts of the

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valve and actuator must be heat

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is sub-zero and the ambient

traced to maintain normal operation.

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Pressure bar g

Pressure psi g

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High temperature graphite packing is required for use in this region. Note: Soft seated valves cannot be used in this region.

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PTFE soft seated valves are limited to a maximum operating temperature of 200 °C (482 °F).

Pressure bar g

The product must not be used in this region.

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

19.6 bar g @ 38 °C

538 °C @ 1.3 bar g

ASME 150

(275 psi g @ 100 °F)

(1000 °F @ 20 psi g)

(14 °F)

(482 °F)

(392 °F)

(482 °F)

(1 000 °F)

(482 °F)

(1 000 °F)

(572 °F)

(14 °F)

(413 psi g)

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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 (A - A on the LEA63 chart)

- Option P

- Option G

- Option K

- Option H

- Option E

- Option E

- Option D

or N

or P

7 bar

7 bar

19 bar

-29 °C

250 °C

200 °C

250 °C

538 °C

250 °C

538 °C

300 °C

-29 °C

28.4 bar g

Minimum operating temperature

Note: For lower operating temperatures consult Spirax Sarco

PTFE packing

Graphite packing

Maximum differential pressures 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

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"

Page 12 of 18

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