EN 12266-2-2012
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95B7D302A8014EA28339DF40ECF9871D |
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0.69 |
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18 |
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日期： |
2024-6-23 |
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EUROPEAN STANDARD EN 12266-2,NORME EUROPEENNE,EUROPAISCHE NORM,ICS 23.060.01 Supersedes EN 12266-2:2002,English Version,Industrial valves - Testing of metallic valves - Part 2: Tests, test,procedures and acceptance criteria - Supplementary,requirements,Robinetterie industrielle - Essais des appareils de Industriearmaturen - Prufung von Armaturen aus Metall -,robinetterie metalliques - Partie 2: Essais, modes Teri 2: Prtifungen, Prufverfahren und Annahmekritenen -,operatoires d'essai et criteres d'acceptation 宀 Prescriptions Erg^nzende Anforderungen,complementaires,This European Standard was approved by CEN on 16 December 2011.,CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions forgiving 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 ci「tci 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Maita. Netherlands, Norway, Poland,Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.,EUROPEAN COMMITTEE FOR STANDARDIZATION,COMITE EUROPEEN DE NORMALISATION,EUROPAISCHES KOMITEE Ft)R NORMUNG,Management Centre: Avenue Marnix 亿 B-1000 Brussels,. 2012 CEN All rights of expioitation in any form and by any means reserved,worldwide for CEN national Members-,Ref. No. EN 12266-2:2012; E,EN 12266-2:2012 (E),Contents Page,Forewordハ… . ハ………*……*. 3,Introduction.. ハ…. .. .4,1 Scope.. .5,2 Normative references. 5,3 Terms and definitions . 5,4 Test requirements. 5,Annex A (normative) Pressure tests - Test procedures and acceptance criteria 7,A.1 General requirements. . 宀..…” ..7,A.2 Obturator1 strength, Test reference .. .. 9,A.3 Back seat tightness, Test reference P21. 12,Annex B (normative) Functional tests - Test procedures snd acceptance criteria .. .15,B.1 Operability, Test reference F20 .. 15,B.2 Anti-static design, Test reference F21 and reference F22. 15,B.3 Acceptance criteria.. . .“ハ 16,BibHography. 17,2,EN 12266-212012 (E),This document (EN 12266-2:2012) has been prepared by Technical Committee CEN/TC 69 "Industrial valves", the,secretariat of which is held by AFNOR.,.■ ■ ■ . ■ ■ ■ ■ ■,This European Standard shall be given the status of a national standard, either by publication of an identical text or,by endorsement, at the latest by August 2012, and conflicting national standards shall be withdrawn at the latest by,August 2012.,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 12266-2:2002.,This document has been prepared under a mandate given to CEN by the European Commission and the European,Free Trade Association, and supports essential requirements of EU Directive(s).,EN 12266, Industrial valves - Testing of metallic valves consists of the following parts:,—— Part 1: Pressure tests, test procedures and acceptance criteria - Mandatory requirements,—— Part 2: Tests, test procedures and acceptance criteria — Supplementary requirements,EN 12266-1 was drawn up on the basis of International Standard ISO 5208:1993. EN 12266-2 contains,supplementary testing requirements for tests, test procedures and acceptance criteria of vaives.,The main changes compared to the previous edition are:,a) Introduction was changed;,b) Normative references were updated;,c) Clause 4 Test requirements was updated;,d) Sub-clauses A. 1.4 and A, 1.5 were changed;,e) Sub-clause A. 1.6 Test pressure was deleted;,f) Clause A.2 Obturator strength, Test reference P20 was changed;,g) Clause A.3 Back seat tightness, Test reference P21 was changed editorially;,h) Clause B.1 was changed;,り Sub-clause B.2.3 was editorially changed into Clause B.3.,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, Croatia, Cyprus, Czech,Republic, Denmark, Est……
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