1、ICS 13.060.20; 23.060.50Devices to prevent pollution by backflow of potable waterIn-line anti-vacuum valves DN 8 to DN 80 Family D, type AEnglish version of DIN EN 14451Sicherungseinrichtungen zum Schutz des Trinkwassers gegen Verschmutzung durch Rckflieen Rohr-belfter DN 8 bis DN 80 Familie D, Typ
2、ANational 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 NAA-164/4 + 7 Armaturen fr die Trinkwasserinstallation inGebud
3、en, in collaboration with the Normenausschuss Wasserwesen (Water Practice Standards Commit-tee).DEUTSCHE NORM August 2005DIN EN 14451 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
4、 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.de9659420Continued overleaf.Document comprises 19 pages.12.05English versionICS 13.060.20; 23.060.50Devices to prevent pollution b
5、y backflow of potable waterIn-line anti-vacuum valves DN 8 to DN 80 Family D, type A 2005. CEN All rights of exploitation in any form and by any meansreserved worldwide for CEN national members.Ref. No. EN 14451:2005 ESicherungseinrichtungen zum Schutzdes Trinkwassers gegen Verschmut-zung durch Rckf
6、lieen RohrbelfterDN 8 bis DN 80 Familie D, Typ AThis European Standard was approved by CEN on 2004-12-24.CEN members are bound to comply with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard the status of anational standard without any alteration.U
7、p-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 version in any other language made by translation under t
8、he 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, Cyprus, theCzech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,Iceland,
9、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands,Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland, andthe United Kingdom.EN 14451May 2005Management Centre: rue de Stassart, 36 B-1050 BrusselsEuropean Committee for StandardizationComit Europen de Normalisa
10、tionEuropisches Komitee fr NormungDispositifs de protection contre la pol-lution de leau potable par retour Soupape anti-vide en ligne DN 8 DN 80 Famille D, type APage 2EN 14451:20052233444466781718Page 3EN 14451:2005Page 4EN 14451:2005Page 5EN 14451:2005Page 6EN 14451:2005Page 7EN 14451:2005Page 8EN 14451:2005Page 9EN 14451:2005Page 10EN 14451:2005Page 11EN 14451:2005Page 12EN 14451:2005Page 13EN 14451:2005Page 14EN 14451:2005Page 15EN 14451:2005Page 16EN 14451:2005Page 17EN 14451:2005Page 18EN 14451:2005
