BS EN ISO 4126-1:2004

Safety devices for protection against excessive pressure - Part 1: Safety valves

General requirements for safety valves used for protection against excessive pressure.

This International Standard 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 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 is not concerned with applications for safety valves.

This International Standard supersedes BS 6759-1:1984, BS 6759-2:1984 and BS 6759-3:1984 which are withdrawn.

This standard has the following cross-references:

EN 1092-1, EN 1092-2, EN 1092-3, prEN 1759-1, EN 12516-3, EN 12627, EN 12760, EN ISO 6708 and ISO 7-1.