1、ICS 13.060.20; 23.060.01Devices to prevent pollution by backflow of potable waterPressurised air inlet valves DN 15 to DN 50 Family L, type A and type BEnglish version of DIN EN 14455Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rckflieen Druck-beaufschlagte Rohrbelft
2、er in Durchflussform DN 15 bis DN 50 Familie L, Typ A und Typ BNational forewordThis standard has been prepared by CEN/TC 164 Water supply (Secretariat: France).The responsible German body involved in its preparation was the Normenausschuss Armaturen (ValvesStandards Committee), Technical Committee
3、NAA-164/4 + 7 Armaturen fr die Trinkwasserinstallation inGebuden, in collaboration with the Normenausschuss Wasserwesen (Water Practice Standards Commit-tee).DEUTSCHE NORM August 2005DIN EN 14455 No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Norm
4、ung e.V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Supersedes DIN 1995-3,October 1989 edition.See start of validity.English price group 12www.din.dewww.beuth.de9659422Continued overleaf.Document comprises 19 pages.12.05English
5、 versionICS 13.060.20; 23.060.01Devices to prevent pollution by backflow of potable waterPressurised air inlet valves DN 15 to DN 50 Family L, type A and type B 2005. CEN All rights of exploitation in any form and by any meansreserved worldwide for CEN national members.Ref. No. EN 14455:2005 ESicher
6、ungseinrichtungen zum Schutz-des Trinkwassers gegen Verschmut-zung durch Rckflieen Druckbeauf-schlagte Rohrbelfter in Durchfluss-form DN 15 bis DN 50 Familie L,Typ A und Typ BThis European Standard was approved by CEN on 2004-12-24.CEN members are bound to comply with the CEN/CENELEC Internal Regula
7、tionswhich stipulate the conditions for giving this European Standard the status of anational standard without any alteration.Up-to-date lists and bibliographical references concerning such national stand-ards may be obtained on application to the Management Centre or to anyCEN member.The European S
8、tandards exist in three official versions (English, French, German).A version in any other language made by translation under the responsibility of aCEN member into its own language and notified to the Management Centre hasthe same status as the official versions.CEN members are the national standar
9、ds bodies of Austria, Belgium, Cyprus, theCzech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands,Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland, andthe United Kingdom.EN 1445
10、5May 2005Management Centre: rue de Stassart, 36 B-1050 BrusselsEuropean Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungDispositifs de protection contre la pol-lution de leau potable par retour Cla-pet dentre dair sous pression DN 15 DN 50 Famille L, type A e
11、t type BPage 2EN 14455:20052233444557891718Page 3EN 14455:2005Page 4EN 14455:2005Page 5EN 14455:2005Page 6EN 14455:2005Page 7EN 14455:2005Page 8EN 14455:2005Page 9EN 14455:2005Page 10EN 14455:2005Page 11EN 14455:2005Page 12EN 14455:2005Page 13EN 14455:2005Page 14EN 14455:2005Page 15EN 14455:2005Page 16EN 14455:2005Page 17EN 14455:2005Page 18EN 14455:2005
