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EN ISO 4126-4:2004

Safety devices for protection against excessive pressure - Part 4: Pilot operated safety valves (ISO 4126-4:2004) EN ISO 4126-4:2004

Publication date:   Jun 30, 2004

General information

99.60 Withdrawal effective   Jul 17, 2013

CEN

CEN/TC 69 Industrial valves

European Norm

13.240   Protection against excessive pressure

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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.

Related legislation

Legislation related to this standard

97/23/EC

Pressure equipment

Harmonized/Supporting
Legislation 97/23/EC

Life cycle

NOW

WITHDRAWN
EN ISO 4126-4:2004
99.60 Withdrawal effective
Jul 17, 2013

REVISED BY

PUBLISHED
EN ISO 4126-4:2013