What is this standard about?
BS EN ISO 4126 is an international standard on safety devices consisting of 11 parts – Part 5 specifies the latest general requirements for controlled safety pressure relief systems.
Who is this standard for?
- Manufacturers, suppliers and users of safety pressure relief systems
- Testers of safety pressure relief systems
Why should you use this standard?
This part of BS EN ISO 4126 gives the most up to date requirements for Controlled Safety Pressure Relief (CSPR) systems irrespective of the fluid for which they are designed. It is applicable for main valves having a flow diameter of 6 mm and above which are for use at pressures of 0,1 bar gauge and above. No limitation is placed on temperature.
BS EN ISO 4126-5 is a product standard and is not concerned with applications.
What’s changed since the last update?
- BS EN ISO 4126-5 has been systematically reviewed by experts, who have taken into consideration recent technological and industry developments
- This is the second amendment/corrigenda to BS EN ISO 4126
- Sub clause 7.2.1 has been updated