EN ISO 4126-4:2013

Safety devices for protection against excessive pressure - Part 4: Pilot-operated safety valves (ISO 4126-4:2013)

Publication date:   Feb 17, 2014

General information

60.60 Standard published   Jul 17, 2013

CEN

CEN/TC 69 Industrial valves

European Norm

13.240   Protection against excessive pressure

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Scope

ISO 4126-4:2013 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.

Related legislation

Legislation related to this standard

97/23/EC

Pressure equipment

Harmonized/Supporting
2014/68/EU

Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment

Harmonized/Supporting

Life cycle

PREVIOUSLY

WITHDRAWN
EN ISO 4126-4:2004

NOW

PUBLISHED
EN ISO 4126-4:2013
60.60 Standard published
Jul 17, 2013