ISO INTERNATIONAL STANDARD 22434 Second edition 2022-03 Gas cylinders Inspection and maintenance of valves Bouteilles a gaz-Controle et maintenance des robinets Referencenumber IS022434:2022(E) ISO IS02022 IS0 22434:2022(E) COPYRIGHTPROTECTEDDOCUMENT IS02022 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 anyform or by anymeans, electronic or mechanical, including photocopying, orposting on theinternetoran intranet,withoutpriorwrittenpermission.Permissioncanberequestedfrom eitherIsoattheaddressbelow or ISO's member body in the country of the requester. ISO copyright office CP401 : Ch.de Blandonnet 8 CH-1214 Vernier,Geneva Phone: +4122 749 0111 Email: [email protected] Website:www.iso.org Published in Switzerland ii @IS0 2022-All rights reserved