ISO INTERNATIONAL STANDARD 6993-3 First edition 2006-06-01 Buried, high-impact poly(vinyl chloride) (PvC-Hl) piping systems for the supply of gaseous fuels Part 3: Fittings and saddles for a maximum operating pressure of 1 bar (100 kPa) Systemes decanalisations enterrees enpoly(chlorurede vinyle)a résistanceau chocaméliorée (PvC-Hl)pourréseauxdecombustibles xneze Partie3:Raccordset collierspourunepressionmaximaledeservicede 1bar (100kPa) Reference number ISO 6993-3:2006(E) @ISO2006 Copyright Intemational Organization for Standardization 9:53MDT ISO 6993-3:2006(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ISO2006All rights reserved without ficense from IHS Not for Resale, 04/16/2007 09:09:53 MDT ISO 6993-3:2006(E) Contents Page Foreword 1 Scope 2 Normative references 3 Terms,definitions,symbolsandabbreviatedterms 4 Material ... 5 Generalcharacteristicsoffittings/saddles. 6 Geometrical characteristics 7 Physical characteristics. 8 Mechanical characteristics 9 Saddle design and construction .. 9 10 Performancerequirements 11 Test methods.. 12 Marking. Annex A(normative)Determination of resistance to external blows at o c forfittings... AnnexB (normative)Determination of resistanceto externalblowsat o 'c for saddles.. Annex C (normative)Determination of tensile resistance of in-line fitting assemblies ... AnnexD (normative)Determination of leaktightness of saddle jointsby internalairpressure, with and without mechanical loading .. ..19 Annex E (normative) Determination of leaktightness of saddle joints under negative pressure and mechanical loading... .21 AnnexF(normative)Determination of leaktightness underconstant load andbytensile testingat constantspeed of lateral connections (end-load resistant joints oftapping saddles with PE service pipe lines).. Bibliography... ii se from IHS :53 MD ISO 6993-3:2006(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies International Electrotechnical Commission (IEC)on all matters of electrotechnical standardization. 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. IsO shall not be held responsible for identifying any or all such patent rights. ISO 6993-3was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of fluids, Subcommittee Sc 4, Plastics pipes and fittings for the supply of gaseous fuels. This first edition of ISO 6993-3, together with ISO 6993-1, ISO 6993-2 and ISO 6993-4, cancels and replaces Is0 6993:2001, of which it constitutes a technical revision. Part1:Pipesforamaxi