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This part of the 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 (10 kPa) and above. No limitation is placed on temperature. This is a product standard and is not applicable to applications of safety valves. This document has been prepared by Technical Committee ISO/TC 185 "Safety devices for protection against excessive pressure" in collaboration with Technical Committee CEN/TC 69 "Industrial valves". The responsible German committee is Working Committee NA 003-01-10 AA "Sicherheitseinrichtungen gegen Drucküberschreitungen" ("Safety devices for the prevention of excessive pressure") of the Valves Standards Committee (NAA) at DIN e. V.
This document replaces DIN EN ISO 4126-1:2004-05 .
This document has been replaced by: DIN EN ISO 4126-1:2016-12 .