BS EN ISO 4126-1:2013+A2:2019

This standard BS EN ISO 4126-1:2013+A2:2019 Safety devices for protection against excessive pressure is classified in these ICS categories:

• 13.240 Protection against excessive pressure
• 53.020.20 Cranes

This part of ISO 4126 specifies general requirements for safety valves irrespective of the fluid for which they are designed.

It is applicable to safety valves having a 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.

This is a product standard and is not applicable to applications of safety valves.