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ISO 4126-4:2013

Safety devices for protection against excessive pressure — Part 4: Pilot operated safety valves
12 korr 2013

General information

90.93     22 jan 2025

ISO

ISO/TC 185

International Standard

13.240  

anglisht   frëngjisht  

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Scope

ISO 4126-4:2013 specifies general requirements for pilot operated safety valves, 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.
It is applicable to pilot operated safety valves having a valve flow diameter of 4 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature.
ISO 4126-4:2013 is a product standard and it is not applicable to applications of pilot operated safety valves.


Life cycle

PREVIOUSLY

WITHDRAWN
ISO 4126-4:2004

WITHDRAWN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

NOW

PUBLISHED
ISO 4126-4:2013
90.93 Standard confirmed
22 jan 2025