BS EN ISO 17778:2015 BSI Standards Publication Plastics piping systems Fittings, valves and ancillaries - Determination of gaseous flow rate/pressure drop rdtiasig bsi. ..making excellence a habit. BSENISO17778:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN ISO 17778:2015. It supersedes BS EN 12117:1998 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/88/4, Test Methods - Plastic Piping. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @ The British Standards Institution 2015. Published by BSIStandards Limited 2015 ISBN9780580834752 ICS 23.040.20,23.040.45,23.060.01 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2015. Amendments/corrigenda issued since publication Date Textaffected EUROPEANSTANDARD EN ISO 17778 NORMEEUROPEENNE EUROPAISCHENORM March 2015 ICS 23.040.20; 23.040.45; 23.060.01 Supersedes EN12117:1997 English Version Plastics piping systems-Fittings,valves and ancillaries Determination of gaseous flow rate/pressure drop relationships (ISO17778:2015) Systemes de canalisations en plastiques - Raccords, Kunststoff-Rohrleitungssysteme - Formstucke, Armaturen robinets et equipements auxiliaires - Determination du und Zubehorteile - Bestimmung des Zusammenhanges rapport débit gazeux/perte de charge (ISo 17778:2015) zwischen Gasdurchfluss und Druckabfall (ISO 17778:2015) This European Standard was approved by CEN on 14 November 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. cen EUROPEAN COMMITTEEFOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG CEN-CENELEC Management Centre:Avenue Marnix 17,B-1000 Brussels @2015CEN All rights of exploitation in any form and by any means reserved Ref.No.EN ISO 17778:2015 E worldwide for CEN national Members. BSENISO17778:2015 ENISO17778:2015 (E) Foreword fittings and valves for the transport of fluids" in collaboration with Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems" the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical withdrawnatthelatestbySeptember2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12117:1997. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cro