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ISO 4126-4:2004

Safety devices for protection against excessive pressure — Part 4: Pilot-operated safety valves

Feb 27, 2004
95.99 Withdrawal of Standard   Jul 12, 2013

General information

95.99     Jul 12, 2013

ISO

ISO/TC 185

International Standard

13.240  

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Scope

ISO 4126-4:2003 specifies general requirements for pilot operated safety valves, other than those covered in ISO 4126-1, irrespective of the fluid for which they are designed. In all cases, the operation is carried out by the fluid in the system to be protected.
ISO 4126-4:2003 is applicable to pilot operated safety valves having a valve flow diameter of 6 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature.
This is a product standard and it is not concerned with applications for pilot operated safety valves.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 6718:1991

NOW

WITHDRAWN
ISO 4126-4:2004
95.99 Withdrawal of Standard
Jul 12, 2013

CORRIGENDA / AMENDMENTS

WITHDRAWN
ISO 4126-4:2004/Cor 1:2007

REVISED BY

PUBLISHED
ISO 4126-4:2013