Pipeline ancillaries

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

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In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2016

TI-P133-81

ST Issue 4

M21Fi ISO

Reduced Bore Firesafe API607 Ball Valve

DN15 to DN150 Flanged PN40

Description

The M21Fi is a reduced bore ball valve, with a single piece body,

having ISO mounting as standard. It is designed to be an isolating

valve, which can be used with the majority of industrial fluids, not

a control valve.

Firesafe design

In normal working conditions, the ball rests against two PDR 0.8

seats ensuring total closure. When the valve is submitted to

temperature above the limits the seats can withstand, the seat

becomes deformed and renders to extrusion. When the seats have

been totally destroyed, the ball will come to rest firmly against the

metal seat in the cap, producing a metal-to-metal closing. This

secondary seat in the valve cap ensures the valve will operate to

international API 607 standard.

Available types

M21Fi2 ISO

Zinc plated carbon steel body, PDR 0.8 seats.

M21Fi3 ISO

Stainless steel body, PDR 0.8 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.

Pressure / temperature limits

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Sizes and pipe connections

DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100

and DN150

Standard flange: EN 1092 PN40

Face-to-face dimensions:

-

DN15 to DN100 according to DIN 3202 F4.

-

DN25 to DN150 according to BS 2080.

DN15 to DN50

Steam

saturation

curve

DN65

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Pressure bar g

The product must not be used in this region.

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

PMX MaximumdifferentialpressureislimitedtothePMO

Designed for a maximum cold hydraulic test pressure of 60 bar g

PN40

40 bar g @ 120 °C

260 °C @ 0 bar g

-29 °C

17.5 bar g

260 °C @ 0 bar g

Technical data

Flow characteristic

Port

Modified linear

Reduced bore

-29 °C

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

Antistatic device

Complies with ISO 7121 and BS 5351

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