1、ICS 13.060.20; 91.140.60Sicherheitseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rckflieen Systemtrenner mit kontrollierbarer druckreduzierter Zone Familie B Typ AEuropean Standard EN 12729 : 2002 has the status of a DIN Standard.A comma is used as the decimal marker.National f
2、orewordThis 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 Armaturen fr die Trinkwasserinstallation in Gebuden.Ref. No. DIN EN 12729
3、 : 2003-02English price group 14 Sales No. 111407.03DEUTSCHE NORM February 2003EN 12729Continued overleaf.EN comprises 30 pages. No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the
4、 exclusive right of sale for German Standards (DIN-Normen).Devices to prevent pollution by backflow of potable waterControllable backflow preventer with reducedpressure zone, family B, type AEnglish version of DIN EN 12729English versionICS 13.060.20; 91.140.60Descriptors:Devices to prevent pollutio
5、n by backflow of potable waterControllable backflow preventer with reducedpressure zone, family B, type A 2002. CEN All rights of exploitation in any form and by any meansreserved worldwide for CEN national members.Ref. No. EN 12729 : 2002 ESicherheitseinrichtungen zum Schutzdes Trinkwassers gegen V
6、erschmut-zung durch Rckflieen System-trenner mit kontrollierbarer druckre-duzierter Zone Familie B Typ AThis European Standard was approved by CEN on 2002-09-07.CEN members are bound to comply with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard t
7、he 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 Standards exist in three official versions (English, French, German).A v
8、ersion 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 standards bodies of Austria, Belgium, the CzechRepublic, Denmark, Finland, Fra
9、nce, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Malta, the Netherlands, Norway, Portugal, Spain, Sweden,Switzerland, and the United Kingdom.EN 12729November 2002Management Centre: rue de Stassart 36, B-1050 BrusselsEuropean Committee for StandardizationComit Europen de NormalisationEuropis
10、ches Komitee fr Normung|Dispositifs de protection contre lapollution par retour de leau potable Disconnecteur zone de pression r-duite contrlable Famille B Type APage 2EN 12729 : 2002Page334456667778889999910141722232323242530Page 3EN 12729 : 2002Page 4EN 12729 : 2002Page 5EN 12729 : 2002Page 6EN 12
11、729 : 2002Page 7EN 12729 : 2002Page 8EN 12729 : 2002Page 9EN 12729 : 2002Page 10EN 12729 : 2002Page 11EN 12729 : 2002Page 12EN 12729 : 2002Page 13EN 12729 : 2002Page 14EN 12729 : 2002Page 15EN 12729 : 2002Page 16EN 12729 : 2002Page 17EN 12729 : 2002Page 18EN 12729 : 2002Page 19EN 12729 : 2002Page 20EN 12729 : 2002Page 21EN 12729 : 2002Page 22EN 12729 : 2002Page 23EN 12729 : 2002Page 24EN 12729 : 2002Page 25EN 12729 : 2002Page 26EN 12729 : 2002Page 27EN 12729 : 2002Page 28EN 12729 : 2002
