1、ICS 23.060.20Refrigerating systems and heat pumpsValves Requirements, testing and markingEnglish version of DIN EN 12284Klteanlagen und Wmepumpen Ventile Anforderungen,Prfung und KennzeichnungEuropean Standard EN 12284 : 2003 has the status of a DIN Standard.A comma is used as the decimal marker.Nat
2、ional forewordThis standard has been prepared by CEN/TC 182 Refrigerating systems, safety and environmentalrequirements (Secretariat: Germany).The responsible German body involved in its preparation was the Normenausschuss Kltetechnik(Refrigeration Technology Standards Committee), Technical Committe
3、e Sicherheit und Umweltschutz.AmendmentsDIN 3158, December 1987 edition, has been superseded by the specifications of EN 12284.Previous editionsDIN 3158-1: 1974-03; DIN 3158-2: 1974-03; DIN 3158: 1987-12.DEUTSCHE NORM January 2004DIN EN 12284 No part of this standard may be reproduced without the pr
4、ior permission ofDIN Deutsches Institut fr Normung e.V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).Supersedes DIN 3158,December 1987 edition.English price group 21www.din.dewww.beuth.de9549051Continued overleaf.Document compris
5、es 63 pages.05.04G4G15G60G96G57G5English versionICS 23.060.20Refrigerating systems and heat pumpsValves Requirements, testing and marking 2003. CEN All rights of exploitation in any form and by any meansreserved worldwide for CEN national members.Ref. No. EN 12284 : 2003 EKlteanlagen und Wmepumpen V
6、entile Anforderungen, Prfung undKennzeichnungThis European Standard was approved by CEN on 2003-04-21.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.Up-t
7、o-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 the
8、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, France, Germany, Greece, Hungary, Iceland,Ireland, Italy, Luxe
9、mbourg, Malta, the Netherlands, Norway, Portugal, Slovakia,Spain, Sweden, Switzerland, and the United Kingdom.EN 12284September 2003Management Centre: rue de Stassart 36, B-1050 BrusselsEuropean Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungSystmes de rfrig
10、ration et pompes chaleur Robinetterie Exigences,essais et marquagePage 2EN 12284 : 2003333467810111417182023282933535960Page 3EN 12284 : 2003Page 4EN 12284 : 2003Page 5EN 12284 : 2003Page 6EN 12284 : 2003Page 7EN 12284 : 2003Page 8EN 12284 : 2003Page 9EN 12284 : 2003Page 10EN 12284 : 2003Page 11EN 1
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