ISO INTERNATIONAL STANDARD 3459 Third edition 2022-03 Plastic piping systems Mechanical joints between fittings and pressure pipes Test method for leaktightness under negative pressure Systemes de canalisations en matieres plastiques -Assemblages mecaniques entre raccords et tubes sous pression - Méthode d'essai pour I'étancheité sous pression negative Reference number IS0 3459:2022(E) ISO @ ISO 2022 IS0 3459:2022(E) COPYRIGHT PROTECTED DOCUMENT @ISO2022 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, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · 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