1、April 2012 Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior 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).ICS
2、23.060.01!$G)“1883606www.din.deDDIN EN 12266-2Industrial valves Testing of metallic valves Part 2: Tests, test procedures and acceptance criteria SupplementaryrequirementsEnglish translation of DIN EN 12266-2:2012-04Industriearmaturen Prfung von Armaturen aus Metall Teil 2: Prfungen, Prfverfahren un
3、d Annahmekriterien Ergnzende AnforderungenEnglische bersetzung von DIN EN 12266-2:2012-04Robinetterie industrielle Essais des appareils de robinetterie mtalliques Partie 2: Essais, modes opratoires dessai et critres dacceptation PrescriptionscomplmentairesTraduction anglaise de DIN EN 12266-2:2012-0
4、4SupersedesDIN EN 12266-2:2003-05www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1903.12 DIN EN 12266-2:2012-04 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/T
5、C 69 “Industrial valves” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Armaturen (Valves Standards Committee), Working Committee NA 003-01-01 AA Grundnormen. Amendments This standard differs from DIN EN 12266-2:2003-05 as follows: a) th
6、e introduction has been modified; b) normative references have been updated; c) Clause 4 “Test requirements” has been updated; d) Subclauses A.1.4 and A.1.5 have been modified; e) Subclause A.1.6 “Test pressure” has been deleted; f) Clause A.2 “Obturator strength, Test reference P20” has been modifi
7、ed; g) Clause A.3 “Back seat tightness, Test reference P21” has been editorially revised; h) Clause B.1 has been modified. i) Subclause B.2.3 has been editorially revised and is now Clause B.3. Previous editions DIN 3230-3: 1975-03, 1982-04 DIN EN 12266-2: 2003-05-11 EUROPEAN STANDARD NORME EUROPENN
8、E EUROPISCHE NORM EN 12266-2 February 2012 ICS 23.060.01 Supersedes EN 12266-2:2002English Version Industrial valves - Testing of metallic valves - Part 2: Tests, test procedures and acceptance criteria - Supplementary requirements Robinetterie industrielle - Essais des appareils de robinetterie mta
9、lliques - Partie 2: Essais, modes opratoires dessai et critres dacceptation - Prescriptions complmentaires Industriearmaturen - Prfung von Armaturen aus Metall - Teil 2: Prfungen, Prfverfahren und Annahmekriterien - Ergnzende Anforderungen This European Standard was approved by CEN on 16 December 20
10、11. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving 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
11、on application to the CEN-CENELEC Management Centre or to 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-CEN
12、ELEC 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, Malt
13、a, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights
14、of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12266-2:2012: EEN 12266-2:2012 (E) Contents Page Foreword 3Introduction . 41 Scope 52 Normative references 53 Terms and definitions . 54 Test requirements 55 Designation 6Annex A (normative) Pressur
15、e tests Test procedures and acceptance criteria 7A.1 General requirements 7A.2 Obturator strength, Test reference P20 . 9A.3 Back seat tightness, Test reference P21 . 12Annex B (normative) Functional tests Test procedures and acceptance criteria . 15B.1 Operability, Test reference F20 15B.2 Anti-sta
16、tic design, Test reference F21 and reference F22 . 15B.3 Acceptance criteria 16Bibliography 17DIN EN 12266-2:2012-04 2 EN 12266-2:2012 (E) Foreword 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
17、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 e
18、lements 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 Euro
19、pean 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 accep
20、tance 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 valves. The main changes compared to the previous edition are: a) Intro
21、duction 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
22、reference P21 was changed editorially; h) Clause B.1 was changed; i) 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, Be
23、lgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
24、 DIN EN 12266-2:2012-04 3 EN 12266-2:2012 (E) Introduction The purpose of this European Standard is to establish certain basic requirements for supplementary production pressure testing of industrial valves in order to ensure uniform tests and test procedures. Tests and procedures given in this Euro
25、pean Standard may be used for production tests and, where applicable, for type tests and acceptance tests. Special requirements, which are specific to one product or one performance standard only, are not included in this European Standard. Details should be included in the appropriate standard. DIN
26、 EN 12266-2:2012-04 4 EN 12266-2:2012 (E) 1 Scope This European Standard specifies supplementary requirements for tests, test procedures and acceptance criteria of industrial valves made of metallic materials. The specified tests may be used as type tests, production tests or acceptance tests. The a
27、pplication of these tests is specified in the appropriate product or performance standards. When specified as a normative reference in a valve product or performance standard, this European Standard should be considered in conjunction with given specific requirements of the valve product or performa
28、nce standard. Where requirements in a product or performance standard differ from those given in this European Standard, the requirements of the product or performance standard apply. NOTE For testing of industrial valves of thermoplastic materials, ISO 9393-1 and ISO 9393-2 apply. 2 Normative refer
29、ences The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 736-1, Valves Terminology Part 1: Defini
30、tion of types of valves EN 736-2, Valves Terminology Part 2: Definition of components of valves EN 736-3, Valves Terminology Part 3: Definition of terms EN 1267, Industrial valves Test of flow resistance using water as test fluid EN ISO 10497, Testing of valves Fire type-testing requirements (ISO 10
31、497) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 736-1, EN 736-2 and EN 736-3 apply. 4 Test requirements The product or performance standard specifies which tests or inspections shall be applied to the valve listed in Table 1. Test procedures and
32、acceptance criteria shall be as given in Annex A for pressure tests, in Annex B for functional tests or in other specified standards, see Table 1. DIN EN 12266-2:2012-04 5 EN 12266-2:2012 (E) Table 1 Requirements for tests, test procedures and acceptance criteria Test Purpose Test procedure and acce
33、ptance criteria Title Test reference Obturator strength P20 To confirm the allowable differential pressure containing capability of the obturator in the closed position see A.2 Back seat tightness P21 To confirm the capacity of the back seat to the specified leakage rate at the time of manufacture s
34、ee A.3 Operability F20 To confirm the complete opening and closing capability of the valve and, where applicable, the correct operation of the position indicators or other auxiliary devices see B.1 Anti-static design at 12 V F21 To confirm electrical conductivity between the obturator and the body o
35、f the valve see B.2.2.2 Anti-static design at 100 V F22 To confirm electrical conductivity between the obturator and the body of the valve see B.2.2.3 Fire tested design F23 To confirm the pressure containing capability of the valve under pressure during and after specified fire conditions EN ISO 10
36、497 Flow resistance F24 a To confirm the specified flow coefficient or flow resistance coefficient EN 1267 aF24 test does not apply to control valves. 5 Designation Tests in accordance with this European Standard shall be designated by the following elements: title of test and test reference; EN 122
37、66-2. EXAMPLE Operability Test F20 EN 12266-2 DIN EN 12266-2:2012-04 6 EN 12266-2:2012 (E) Annex A (normative) Pressure tests Test procedures and acceptance criteria A.1 General requirements A.1.1 Purpose These general requirements shall be applied to all the test procedures defined in Annex A. Safe
38、ty aspects of valve testing are not covered in this European Standard. NOTE Users of this European Standard should analyse the hazard resulting from the pressure and take proper safety precautions. A.1.2 Test equipment The test equipment shall be of such a design that it does not subject the valve t
39、o externally applied loads which may affect the results of the test. NOTE The test equipment can apply external loads sufficient to react to the forces resulting from the test pressure. When using test equipment and procedures different to that detailed in this European Standard, the manufacturer sh
40、all be able to demonstrate the equivalence of such test procedures and acceptance criteria with the requirements of this European Standard. A.1.3 Measuring equipment The measuring equipment shall be capable of measuring fluid pressure with an accuracy of 5 % of the required test pressure. A.1.4 Pain
41、ted, coated or lined valves Valves with liners, internal linings or internal coatings forming a design feature of the valve may be tested with the liner, after lining or coating. Attention shall be given that the internal linings or internal coatings are not damaged by the test procedure. NOTE If te
42、sts in the presence of a representative of the purchaser are specified, painted or coated valves from stock may be retested without removal of painting or coating. A.1.5 Test fluid The test fluid to be used shall be: either a liquid (water which may contain a corrosion inhibitor, or any other suitab
43、le liquid having a viscosity not greater than water); or a gas (air or other suitable gas). Relevant detailed test procedures are specified in A.2.2.1 and A.3.2.1. The test fluid temperature shall be between 5 C and 40 C. DIN EN 12266-2:2012-04 7 EN 12266-2:2012 (E) A.1.6 Equivalent DN numbers For t
44、he purpose of calculating seat leakage rates and test duration times it is necessary to establish the equivalent DN number for those valves which are designated other than by DN. The equivalent DN numbers of valves having flanged ends, threaded ends, weld ends, capillary or compression ends shall be
45、 as given in Table A.1. Table A.1 Equivalent DN numbers for different types of body ends Equivalent DN numbers Flanged, threaded or welding ends NPS Capillary or compression ends for copper tube Compression ends for plastic tube mm mm8 8 10 10; 12 10; 12 15 14; 14,7; 15; 16; 18 14,7; 15; 16; 18 20 2
46、1; 22 20; 21; 22 25 1 25; 27,4; 28 25; 27,4; 28 32 1 34; 35; 38 32; 34 40 1 40; 40,5; 42 40; 40,5 50 2 53,6; 54 50; 53,6 65 2 64; 66,7; 70 63 80 3 76,1; 80; 88,9 75; 90 100 4 108 110125 5 150 6 200 8 250 10 300 12 350 14 400 16 450 18 500 20 600 24 650 26 700 28 750 30 800 32 900 36 1 000 40 DIN EN
47、12266-2:2012-04 8 EN 12266-2:2012 (E) A.2 Obturator strength, Test reference P20 A.2.1 Purpose The test shall confirm the allowable differential pressure containing capability of the obturator in the closed position. NOTE The test is applicable when a valve is used as single means of insulation betw
48、een the content of an item of pressure equipment and the downstream equipment not designed to withstand the upstream pressure. A.2.2 Test method A.2.2.1 Test procedure The test fluid shall be a liquid or gas. The choice of the test medium is the responsibility of the manufacturer. WARNING When the test medium is a gas, additional safety measures may be applied. The te
