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

Safety devices for protection against excessive pressure. Safety valves | Status: Current, Confirmed

1 Scope 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.