ISO INTERNATIONAL 17885 STANDARD Second edition 2021-06 Plastics piping systems - Mechanical fittings for pressure piping systems - Specifications Systemes de canalisations en plastiques - Raccords mécaniques pour les canalisations sous pression-Spécifications Reference number IS017885:2021(E) ISO @ IS0 2021 IS0 17885:2021(E) COPYRIGHTPROTECTEDDOCUMENT IS02021 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 below 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 i IS0 2021-All rights reserved IS017885:2021(E) Contents Page Foreword ..V Introduction ..vii 1 Scope. ..1 2 Normativereferences ..1 3 Terms,definitions, symbols and abbreviated terms. .3 .3 3.1 Terms and definitions. 3.2 Symbolsand abbreviatedterms. .5 3.2.1 Materials 3.2.2 Applications .6 4 Manufacturers'declaration for the field of application ..6 5 Material. .6 5.1 General ..6 5.2 Plastic materials. .7 5.3 Metals.. 9 5.4 Elastomers 5.5 Lubricants and/orgreases .10 6 General characteristics .10 6.1 Appearance .10 6.2 Colour. 10 6.3 Weathering protection .10 6.4 Threads .10 6.5 Transition fittings to metal pipes. .10 6.6 Combined fittings .11 6.7 Twisting. .11 7 Geometrical characteristics .11 8 Physical characteristics .11 8.1 Evaluation of the MRS value of the plastic material .11 8.2 Verification of long-termbehaviour of theplasticmaterial 11 8.3 Specific material related characteristics of fitting materials ..12 8.4 Application-relatedcharacteristics. 8.4.1 Effectonwaterquality (W) .12 8.4.2 Resistance to gas constituents (GAS) .12 8.4.3 Chemical resistance of fittingsfor industrial applications (s) .13 9 Performancerequirements. .13 9.1 General 13 9.2 Pressureresistanceofthefittingbody .14 9.2.1 Preparation oftestpiece .14 9.2.2 Testing of pressure resistance. .14 9.3 Fitting assemblies. ..14 9.3.1 Preparation oftestassemblies. .14 9.3.2 Test scheme .14 9.3.3 Requirements .16 10 Marking. .25 11 Packaging .25 AnnexA (informative)Listof standards .26 AnnexB(normative)Stiffenerrequirements .27 Annex C (normative)Testpressure of materials and fittingbodies .28 AnnexD (normative)Physical characteristics of fittingmaterials .30 @ IS0 2021 - All rights reserved iii