International ISO Standard IS016422-1 First edition Pipes and joints made of oriented 2024-02 unplasticized poly(vinyl chloride) (PvC-O) for the conveyance of water under pressure - Part 1: General Tubes et assemblages en poly(chlorure de vinyle) non plastifié oriente (PVC-O) pour le transport de I'eau sous pression Partie 1: Généralites Reference number IS0 16422-1:2024(en) @ ISO 2024 IS0 16422-1:2024(en) COPYRIGHTPROTECTEDDOCUMENT @ IS02024 be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on or ISO's member body in the country of the requester. ISO copyright office CP 40i : 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 @IS02024-Allrightsreserved i IS0 16422-1:2024(en) Contents Page Foreword. ..iv Introduction ..V 1 Scope. .1 2 Normative references .1 3 Terms and definitions .2 .2 3.1 Terms related to wall construction 3.2 Terms related to geometrics. ..2 3.3 Terms related to material. Terms related to material characteristics 3.4 .3 3.5 Terms related to service conditions ..4 Symbols and abbreviated terms. .5 4 4.1 Symbols ..5 4.2 Abbreviated terms ..6 Material 5 .6 5.1 General requirements for compounds or formulations ..6 5.2 Special requirements for compounds or formulations for components in contact with ..6 drinking water... 5.3 ..6 Use of reworked material. .7 Material classification. 6 6.1 MRS value classification pipes .7 PN classification fittings 6.2 .7 6.3 Design stress pipes Bibliography .8 @ IS0 2024 - All rights reserved iii