ISO 5175-3:2025

Gas welding equipment — Safety devices — Part 3: Decomposition blockers for low-pressure acetylene

OVERVIEW

This document specifies the general requirements and tests for decomposition blockers downstream of pressure regulators in acetylene manifold systems (see ISO 14114). Decomposition blockers can be used in the low-pressure section (downstream of acetylene manifold system outlet) up to 0,15 MPa (1,5 bar) e.g. in pipelines, outlet points or for the protection of low-pressure sections in big pipe systems. Decomposition blockers can only be used in sections with pure acetylene. The possible backflow of oxygen or air into the section where the decomposition blocker is installed needs to be prevented by a non-return valve downstream of the decomposition blocker.

COMMENTS

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PRODUCT DETAILS

Status Current
Edition 2025
No. of Pages 6
ICS Classification 25.160.30 Welding equipment
Committee ISO/TC 44/SC 8
Available for Purchase For sale in Singapore only
Adoption ISO : 0