This part of ISO 4126 specifies the requirements for controlled safety pressure relief systems (CSPRS) irrespective of the fluid for which they are designed.
It is applicable for main valves having a flow diameter of 4 mm and above which are for use at pressures of 0,1 bar gauge and above. No limitation is placed on temperature.
This is a product standard and is not applicable to applications.
ISO 4126-5:2013 Referenced Document
ISO 4126-7:2013 Safety devices for protection against excessive pressure - Part 7: Common data
ISO 4126-5:2013 history
2016ISO 4126-5:2013/Amd 1:2016 Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS); Amendment 1
2013ISO 4126-5:2013 Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS)
2007ISO 4126-5:2004/Cor 2:2007 Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS); Technical Corrigendum 2
2006ISO 4126-5:2004/Cor 1:2006 Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS); Technical Corrigendum 1
2004ISO 4126-5:2004 Safety devices for protection against excessive pressure - Part 5: Controlled safety pressure relief systems (CSPRS)