ISO 5175-1:2017

Gas welding equipment — Safety devices — Part 1: Devices incorporating a flame (flashback) arrestor

Publication date:   Oct 17, 2017

General information

90.60 Close of review   Mar 5, 2023


ISO/TC 44/SC 8 Equipment for gas welding, cutting and allied processes

International Standard

25.160.30   Welding equipment



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ISO 5175-1:2017 specifies the general requirements and tests for safety devices for fuel gases and oxygen or compressed air incorporating a flame (flashback) arrestor used downstream of manifold, cylinder and/or pipeline outlet regulators, and upstream of blowpipes for welding, cutting and allied processes.
ISO 5175-1:2017 does not specify the location of these devices in the gas system.
ISO 5175-1:2017 is not applicable to safety devices not incorporating a flame arrestor, covered by ISO 5175‑2.
ISO 5175-1:2017 does not apply to the use of safety devices incorporating flame arrestors for applications with premixed oxy/fuel or air/fuel gas supply systems, e.g. downstream of gas mixers or a generator to produce hydrogen/oxygen mixture by electrolytic decomposition of water.

Life cycle


ISO 5175:1987

ISO 5175:1987/Amd 1:2015


ISO 5175-1:2017
90.60 Close of review
Mar 5, 2023