EN 12266-2
EUROPEANSTANDARD NORMEEUROPEENNE EUROPAISCHENORM
February2012
Supersedes EN 12266-2:2002
ICS23.060.01
EnglishVersion
Industrialvalves-Testingofmetallicvalves-Part2:Tests,test
proceduresandacceptance criteria-Supplementary
reguirements
Industriearmaturen - Prufung von Armaturen aus Metall Teil 2: Prufungen, Prufverfahren und Annahmekriterien
Robinetterie industrielle - Essais des appareils de robinetterie metalliques - Partie 2: Essais, modes
operatoires d'essai et criteres d'acceptation - Prescriptions
Erganzende Anforderungen
complementaires
This European Standard was approvedby CENon 16December2011. 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 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 ofa CENmember 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, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brusseis
@2012CEN All rights of exploitation in any form and by any means reserved
Ref.No.EN 12266-2:2012: E
worldwide for CEN national Members EN12266-2:2012(E)
Contents
Page
Foreword. Introduction 1
1
Scope.
2 Normativereferences. 3
Terms and definitions
4 Testrequirements 5
Designation.
Annex A (normative) Pressure tests -- Test procedures and acceptance criteria A.1 Generalrequirements....... A.2 Obturator strength, Test reference P20. A.3 Back seat tightness, Test reference P21. Annex B (normative) Functional tests - Test procedures and acceptance criteria. B.1 Operability, Test reference F20 .... B.2 Anti-static design,Test reference F21and reference F22 B.3 Acceptance criteria.... Bibliography
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15 15 15 16
2 EN12266-2:2012(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 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 August2012. 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 documentsupersedesEN12266-2:2002 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) EN12266,Industrialvalves-Testingofmetallicvalves consistsof thefollowingparts 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. EN12266-2 contains supplementary testing requirements for tests, test procedures and acceptance criteria of valves. 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.3Back seattightness,TestreferenceP21was changededitorially h) Clause B.1was 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, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,Denmark,Estonia,FiniandFrance, Germany,Greece,Hungary,Iceland, Ireland, Italy,Latvia,Lithuania Luxembourg,Malta, Netherlands,Norway,Poiand,Portugal, Romania,Slovakia,Siovenia,Spain,Sweden Switzerland, Turkey and the United Kingdom.
3 EN12266-2:2012(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 European 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 onlyare not included in this European Standard.Details should be included in the appropriate standard.
4 EN12266-2:2012(E)
1Scope This European Standard specifies supplementaryrequirementsfortests, test procedures and acceptance criteria of industrialvalves·made ofmetallic materials. The specified tests may be used as type tests, production tests or acceptance tests. The application of these tests is specified in the appropriate product or performanice standards. When specified as a normative reference in a.valve product or performance standard, this European Standard should be considered in conjunction withgiven specific requirements of the valve product or performance 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 Fortestingof industrial valvesof thermoplasticmaterials,IsO9393-1andIso9393-2apply
2Normative references The following referenced documents are indispensable for the application of this document. For dated references. only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments)applies. EN736-1,Valves--Terminology--Part1:Definitionoftypesofvalves EN736-2,Valves--Terminology-Part2:Definitionofcomponentsofvalves EN736-3,Valves--Terminology--Part3:Definitionofterms EN1267,Industrialvalves---Testof flowresistance using wateras testfluid EN1so10497,Testingofvalves-.--Firetype-testingrequirements(IsO10497)
Terms anddefinitions
3
For the purposes of this document, the terms and definitions given in EN 736-1, EN 736-2 and EN 736-3 appiy
4Test requirements The product or performance standard specifies which tests or inspections shall be applied to the valve listed in Table1. Test procedures and 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.
5 EN12266-2:2012(E)
Table 1 -- Requirements fortests,test procedures and acceptance criteria Test
Test procedureand acceptancecriteria
Purpose
Title
Test reference
Toconfirmtheallowabledifferential pressurecontainingcapabilityofthe obturator.intheclosedposition To confirm the capacity of the back seat to the specified leakage rate at the time ofmanufacture To confirm the complete opening and closing capability of the valve and, where applicable, the correct operation of the position indicators or other auxiliary
Obturator strength
P20
see A.2
P21
Back seat tightness
see A.3
F20
Operability
see B.1
devices To confirm electrical conductivity between the obturator and the body of the valve To confirm electrical conductivity betweentheobturatorandthebody of the valve Toconfirm thepressurecontaining capability of the valveunderpressure during and after specified fire conditions To confirm the specified flow coefficient or flowresistancecoefficient
Anti-static design at 12 V
F21
see B.2.2.2
Anti-static design at 100 V
F22
see B.2.2.3
Fire tested design
F23
ENISO10497
Flow resistance a F24 test does not apply to control valves.
F24 a
EN 1267
Designation Tests in accordance with this European Standard shail be designated by the following elements: .title of test and test reference;
5
EN12266-2
-
EXAMPLE
OperabilityTestF20EN12266-2
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. Safetyaspectsofvalvetesting arenotcovered in this EuropeanStandard 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 to externally applied loads which mayaffecttheresultsofthetest. 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 shall be able to demonstrate the equivalence of such test procedures and acceptance criteria with the requirements of this European Standard. A.1.3Measuringequipment The measuring equipment shall be capable of measuring fluid pressure with an accuracy of ±5% of the required testpressure A.1.4 Painted, 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 internai linings orinternal coatings are notdamaged by the test procedure NOTE If tests in the presence of a representative of the purchaser are specified, painted or coated valves from stock may
be retested without removal of painting orcoating
A.1.5 Test fluid The test fluid to be used shall ber
either a liquid (water which may contain a corrosion inhibitor, or any other suitable liquid having a viscosity not greater than water): or a gas (air or other suitable gas)
Relevant detailed testprocedures are specified in A.2.2.1and A.3.2.1. Thetestfluidtemperature shall bebetween5°Cand40C
7 EN12266-2:2012(E)
A.1.6EquivalentDNnumbers For the purpose of calculating seat leakage rates and test duration times it is necessary to establish the equivalent
DN numberfor thosevalves which are designated other than byDN. The equivalent DN numbers of valves having flanged ends, threaded ends, weld ends, capillary or compression ends shall be as given inTable A.1.
Table A.1 --- Equivalent DN numbers for different types of body ends
Equivalent DN Flanged, threaded or Capillaryorcompressionends Compressionendsforplastic
welding ends
numbers
forcoppertube
tube mm - 10; 12
NPS V4 - V2 % 1 1 V4 1 V/z 2 2 V2 3 4 5 6 8 10 12 14 16 18 20 24 26 28 30 32 36 40
mm 8 10; 12
8o 10 15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 500 600 650 700 750 800 900 1000
14,7; 15; 16; 18 20; 21; 22 25; 27,4; 28
14; 14,7;15; 16:18
21; 22 25; 27,4; 28 34; 35; 38 40; 40,5; 42 53,6; 54 64; 66,7; 70 76,1; 80; 88,9
32; 34 40; 40,5 50; 53,6 63 75; 90 110
108
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