ISO 4126-4:2013

July 2013

International standard Current

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

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.

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Main informations

Collections

International ISO standards

Thematics

Sécurité, Gestion des risques et SST, QSE

Publication date

July 2013

Number of pages

16 p.

Reference

ISO 4126-4:2013

ICS Codes

13.240 Protection against excessive pressure

Print number

1 - 19/07/2013

Sumary

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

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.

Replaced standards (2)

ISO 4126-4:2004

February 2004

International standard Cancelled

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

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.

ISO 4126-4/AC1:2007

August 2007

International standard Cancelled

Technical corrigendum 1 to standard ISO 4126-4:2004

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