Standard Swedish standard · SS-EN ISO 4126-4:2013

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

Status: Valid

This part of this European Standard specifies general requirements for pilot operated safety valves, other than those covered in Part 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. It 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.


Protection against excessive pressure (13.240) Pressure regulators (23.060.40) Other (23.060.99)

Product information

Language: English

Written by: SIS - Materialteknik

International title:

Article no: STD-98635

Edition: 2

Approved: 8/9/2013

No of pages: 32

Replaces: SS-EN ISO 4126-4:2004