ISO 7289:2018

INTERNATIONAL ISO
STANDARD 7289
Fourth edition
2018-12
Corrected version
2021-08
Gas welding equipment — Quick-
action couplings with shut-off valves
for welding, cutting and allied
processes
Matériel de soudage aux gaz — Raccords rapides à obturation pour
soudage, coupage et techniques connexes
Reference number
ISO 7289:2018(E)
©
ISO 2018

---------------------- Page: 1 ----------------------
ISO 7289:2018(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 7289:2018(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Types of coupling . 2
5 Installation . 2
6 Design requirement . 2
6.1 Dimensions, non-interchangeability and interchangeability . 2
6.2 Configuration . 2
6.3 Coupling and uncoupling . 3
6.4 Connections . 3
6.5 Materials . 3
7 Working requirements . 4
7.1 Pressure resistance . 4
7.2 Gas tightness . 4
7.2.1 General requirements . 4
7.2.2 Specific requirements . 4
7.3 Pressure drop .
...