ISO INTERNATIONAL STANDARD 21003-1 First edition 2008-07-01 Multilayer piping systems forhotand coldwaterinstallationsinside buildings- Part 1: General Systemes de canalisations multicouches pour installations d'eau chaude et froide a I'interieur des batiments Partie1:Géneralites Reference number ISO21003-1:2008(E) s @ISO2008 ISO21003-1:2008(E) Contents Page Foreword. iv Introduction 1 Scope 2 Normativereferences 3 Terms and definitions.. 3.1 Definitionsrelatedto construction. 3.2 Definitions related to geometry... 3.3 Definitionsrelated toserviceconditions 3.4 Definitions related to materials ..... 3.5 Definitions related to material characteristics.. 3.6 Definitions related to temperature.... 4 Symbolsand abbreviatedterms 4.1 Symbols. 4.2 Abbreviatedterms 5 Classificationofserviceconditions 6 Material... 6.1 General.. 6.2 Influence on water intended forhuman consumption. Annex A (normative)List of reference product standards Bibliography. 10 @S02008-Allrightsreserved ii ISO21003-1:2008(E) Foreword ISO (theInternational Organizationfor Standardization)is a worldwidefederation ofnational standards bodies (Iso member bodies). The work of preparing International Standards is normally carried out through ISO InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards.Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.so shallnot be held responsible for identifying any or all such patent rights. ISO21003-1was prepared byTechnical CommitteeISO/TC138,Plasticspipes,fittings andvalvesforthe transportoffluids,SubcommitteeSc2,Plasticspipesandfittingsforwatersupplies. waterinstallations inside buildings: Part1:General -Part 2: Pipes —Part3:Fittings Part5:Fitnessforpurposeofthe system Part7:Guidancefortheassessmentofconformity[TechnicalSpecification] NOTE ISO21003does not includea Part 4:Ancillary equipment, or a Part 6:Guidancefor installation. iv Is02008-All rightsreserved