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AS 4632:2020

Current
Current

The latest, up-to-date edition.

Over-pressure and under-pressure shut-off devices
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

24-01-2020

Preview

The objective of this Standard is to provide manufacturers, designers, regulatory authorities, testing laboratories and similar organizations with uniform minimum requirements for the safety and performance of over-pressure and under-pressure shut-off devices.

This Standard sets out requirements for over-pressure and under-pressure shut-off devices up to 150 mm nominal bore (DN 150) for use on natural gas (NG), simulated natural gas (SNG), town gas (TG), tempered liquefied petroleum gas (TLP) and liquefied petroleum gas (LPG), intended to be fitted in the gas supply downstream of the consumer billing meter or an LPG first stage pressure regulator.
The requirements apply to over-pressure and under-pressure shut-off devices intended for installation into consumer piping either directly or as part of a gas pressure regulator.
NOTE 1 Over-pressure shut-off devices generally serve to protect equipment downstream of regulators from being pressurized beyond its rated working pressure if the regulator fails.
This Standard does not cover devices incorporating automatic safety shut-off valves actuated by electrical pressure-sensing devices.
NOTE 2 The requirements for pressure-sensing devices are covered in AS 4628 and the requirements for automatic shut-off valves are covered in AS 4629.
Conformance to the requirements of this Standard does not imply acceptability for use without supplemental tests in an intended application.
NOTE 3 For over-pressure and under-pressure shut-off devices with flows greater than 200 m3/h for natural gas and town gas refer to EN 14382.

Committee
AG-013
DocumentType
Standard
ISBN
978 1 76072 717 8
Pages
40
PublisherName
Standards Australia
Status
Current
Supersedes

Originated as AG 211-1976.
Republished and redesignated AS 4632-2005. This edition 2020. Originated as AG 211-1976. Republished and redesignated AS 4632-2005. This edition 2020.

AS/NZS 5601.1:2013 Gas installations General installations
AS 4629-2005 Automatic shut off valves and vent valves (Reconfirmed 2018)
ISO 23551-5:2014 Safety and control devices for gas burners and gas-burning appliances — Particular requirements — Part 5: Manual gas valves
AS/NZS 5601.2:2013 Gas installations LP Gas installations in caravans and boats for non-propulsive purposes
AS 4564-2011 Specification for general purpose natural gas
AS 4628-2005 Pressure and temperature limit devices for use with gas burners
ISO 6957:1988 Copper alloys Ammonia test for stress corrosion resistance
AS 2136-1977 Method for detecting the susceptibility of copper and its alloys to stress corrosion cracking using the mercurous nitrate test (Reconfirmed 2018)
ISO 23550:2018 Safety and control devices for gas and/or oil burners and appliances — General requirements
EN 14382:2019 Gas safety shut-off devices for inlet pressure up to 10 MPa (100 bar)

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