ISO INTERNATIONAL STANDARD 15876-3 Second edition 2017-01 Plastics piping systems for hot and cold water installations Polybutene (PB) 一 Part 3: Fittings Systemes de canalisations en plastique pour les installations d'eau chaude et froide - Polybutene (PB) Partie 3: Raccords Reference number ISO 15876-3:2017(E) International Organization for Standardization @ IS0 2017 ee=ZHEJIANG INST OF STANDARDIZATION C15956617 mitted without license from IHS IS0 15876-3:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, 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 Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internationai ibrg DrganizationforStandardization Licensee-ZHEJIANG INST OF STANDARDIZzRoISQ7 - All rights reserved networking permited without license from IHS IS0 15876-3:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions, symbols and abbreviated terms ..2 4 Material characteristics. .3 4.1 Plastics fitting material. .3 4.1.1 PB Fitting material identical to the PB pipe compound. .3 4.1.2 PB fitting material not identical to the PB pipe compound .4 4.1.3 Plastics fitting material other than PB 4.2 Metallic fitting material .5 4.3 Influence on water intended for human consumption. .5 5 General characteristics ..5 5.1 Appearance 5 5.2 Opacity .5 6 Geometrical characteristics ..5 6.1 General .5 6.1.1 Nominal diameter(s) .5 6.1.2 Angles. ..5 6.1.3 Threads .6 6.2 Dimensions of sockets for socket weld and electro-fusion fittings .6 6.2.1 Dimensions of socket fusion fittings (see Figure 1) ..6 6.2.2 Dimensions of sockets for electrofusion fittings ..8 6.3 Dimensions of metallic fittings .9 7 Mechanical characteristics of plastics fittings .9 7.1 General. 7.2 Fitting material identical to the PB pipe compound .10 7.3 Fitting made from PB not identical to the PB pipe compound .10 7.4 Fitting made from plastics other than PB ..10 8 Melt flow rate ..12 9 Sealing elements ..12 10 Performance requirements ..12 11 Marking .12 11.1 General requirements ..12 11.2 Minimum required marking. .12 11.3 Additional marking .13 Bibliography .14 ii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 d without license from IHS Not for Resale, 2017/3/28 02:41:02