Pipeline ancillaries

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ISO 9001

TI-P133-02

ST Issue 12

Cert. No. LRQ 0963008

M20S and M20H

Ball Valves DN25 to DN150

ANSI Class 150, ANSI Class 300 and PN40

Description

M20 is a reduced bore ball valve, with a single piece body. It has

been designed for use as an isolating valve, not a control valve

which can be used with the majority of industrial fluids. The M20 is

antistatic and firesafe as standard.

Available types

M20S2

Zinc plated carbon steel body and PDR 0.8 seats.

M20S3

Stainless steel body and PDR 0.8 seats.

M20H2

Zinc plated carbon steel body and PEEK seats.

M20H3

Stainless steel body and PEEK seats.

Standards

This product fully complies with the requirements of the

European Pressure Equipment Directive 97/23/EC and carries

the

mark when so required.

Certification

This product is available with certification to EN 10204 3.1.

Note: All certification/inspection requirements must be stated

at the time of order placement.

Options

• Self-venting ball.

• Extended stems 50 mm (2") and 100 mm (4") to allow full insulation.

• PTFE seats for M20 PN40 valves.

Sizes and pipe connections

DN25, DN32, DN40, DN50, DN65, DN80, DN100 and DN150.

Standard flange EN 1092 PN40, ANSI Class 150 and ANSI Class 300.

Note: The M20S3 and M20H3 are only available with PN40 flanges.

Technical data

Flow characteristic

Modified linear

Port

Reduced bore

Leakage test procedure to ISO 5208 (Rate A) / EN 12266-1 (Rate A)

Antistatic (optional over DN50) complies with ISO 7121 and BS 5351

Firesafe

Designed to API 6FA-1985

Pressure/temperature limits

M20H - Poly Ether Ether Ketone (PEEK)

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Body design conditions

PMA Maximum allowable pressure

TMA Maximum allowable temperature

M20S

M20H

ANSI 300

51 bar g @ 45°C

260°C @ 0 bar g

310°C @ 0 bar g

-29°C

17.5 bar g

39 bar g

260°C @ 0 bar g

*310°C @ 0 bar g

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Pressure bar g

Minimum allowable temperature

PMO

Maximum operating pressure

for saturated steam service

M20S

M20H

M20S

M20S - Carbon and graphite reinforced PTFE (PDR 0.8)

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TMO Maximum operating temperature

M20H

operating temperature is 260°C

Minimum operating temperature

-29°C

Note: For lower operating temperatures consult Spirax Sarco

PMX Maximum differential pressure is limited to the PMO

A

Steam

saturati

curve

Steam

saturation

curve

on

D

C

B

* 310°C for short periods only. For continuous operation, the maximum

D

C

B

Pressure bar g

The product must not be used in this region.

The product must only be used in this area for short time periods.

Flanged ANSI 300

A - C Flanged EN 1092 PN40

Flanged ANSI 150

Designed for a maximum

cold hydraulic test pressure of:

Carbon steel body

Stainless steel body

78 bar g

75 bar g

A - B

A - D

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice.

© Copyright 2007

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