1、April 2016 English price group 19No 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 23.060.20!%Q$“2469701www.din.deDIN
2、 EN 331Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings;English version EN 331:2015,English translation of DIN EN 331:2016-04Handbettigte Kugelhhne und Kegelhhne mit geschlossenem Boden fr die GasHausinstallation;Englische Fassung EN 331:2015,Engl
3、ische bersetzung von DIN EN 331:2016-04Robinets tournant sphrique et robinets tournant conique fond plat destins tre manoeuvrs manuellement et tre utiliss pour les installations de gaz dans les btiments;Version anglaise EN 331:2015,Traduction anglaise de DIN EN 331:2016-04SupersedesDIN EN 331:201108
4、See start of applicationwww.beuth.deDocument comprises 47 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.04.16DIN EN 331:2016-04 2 A comma is used as the decimal marker. Start of application The start of application of this st
5、andard is 2016-04-01. It should be noted that, in Germany, CE conformity marking of construction products will be permitted once this standard has been listed in the Official Journal of the European Union and/or the Bundesanzeiger (German Federal Gazette) and from the date given therein. For further
6、 information, users of this standard should refer to the websites of the European Commission or of the relevant building authority. The standard which this document replaces, DIN EN 331:2011-08, may be used in parallel with this standard during a specified transition period where such has been laid
7、down in the Official Journal of the European Union and/or the Bundesanzeiger (German Federal Gazette). National foreword This document (EN 331:2015) has been prepared by Technical Committee CEN/TC 236 “Non-industrial manually operated shut-off valves and particular combinations valves-other products
8、” (Secretariat: UNI, Italy). The responsible German body involved in its preparation was DIN-Normenausschuss Gastechnik (DIN Standards Committee Gas Technology), Working Committee NA 032-02-06 AA Gasarmaturen. This European standard specifies characteristics for the construction, performance and saf
9、ety of ball valves and closed bottom taper plug valves of nominal sizes DN 100. It applies to metallic valves not directly buried for domestic and commercial installations inside or outside of buildings. It also details the test methods and marking provisions. Amendments This standard differs from D
10、IN EN 331:2011-08 as follows: a) the range of pressure classes has been extended; b) temperature class -40 C has been deleted, since there are no certified elastomers (gasket materials) for this class; c) the range of nominal sizes has been extended to include DN 65, DN 80 and DN 100; d) the surveil
11、lance of the FPC (Factory Production Control) shall now be undertaken every two years (formerly once per year); e) a new Annex A “Resistance to high temperatures for valves classes B and C” has been added; f) Annex ZA (informative) has been updated. Previous editions DIN 3537: 1973-10 DIN 3537-1: 19
12、81-09, 1990-06 DIN 3537-2:1981-09 DIN EN 331: 1999-04, 2011-08 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 331 December 2015 ICS 23.060.20 Supersedes EN 331:1998English Version Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings Robinets tou
13、rnant sphrique et robinets tournant conique fond plat destins tre manoeuvrs manuellement et tre utiliss pour les installations de gaz dans les btiments Handbettigte Kugelhhne und Kegelhhne mit geschlossenem Boden fr die Gas-Hausinstallation This European Standard was approved by CEN on 24 October 20
14、15. 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
15、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
16、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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Ita
17、ly, Latvia, Lithuania, Luxembourg, Malta, 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 CEN-CENELEC Management Centre: Ave
18、nue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 331:2015 EEN 331:2015 (E) 2 Contents Page European foreword . 4 1 Scope 5 2 Normative references 5 3 Terms, definitions, symbols, units and abbrevi
19、ated terms . 7 4 Product characteristics . 9 4.1 Reaction to fire . 9 4.2 Dimensions and tolerance . 9 4.2.1 Materials . 9 4.2.2 Construction . 11 4.2.3 Product appearance 11 4.2.4 Valve maintenance 11 4.2.5 Springs . 11 4.2.6 Wall thickness . 11 4.2.7 Plug valves 11 4.2.8 Angular seal 11 4.2.9 Seal
20、s 12 4.2.10 Operation 12 4.2.11 Stops 13 4.2.12 Joints . 13 4.3 Classification of relevant characteristics 14 4.3.1 Pressure classes 14 4.3.2 Temperature classes . 14 4.3.3 High temperature resistance classes 14 4.4 Tightness (gas): leak tightness 15 4.5 Effectiveness: rated flow rate 15 4.6 Resista
21、nce to high temperature 16 4.7 Mechanical strength for gas networks . 16 4.7.1 Operating torque 16 4.7.2 Torque and bending mechanical strength 16 4.8 Safeguard against overloading of the handle Stop resistance 17 4.9 Release of dangerous substances . 17 4.10 Performance requirements 18 4.10.1 Gener
22、al . 18 4.10.2 Durability 18 5 Testing, assessment and sampling methods 18 5.1 General . 18 5.1.1 Test conditions 18 5.1.2 Test sequence 18 5.2 Internal pressure and leak-tightness . 18 5.2.1 General . 18 5.2.2 Pressure test values 19 5.2.3 Closure parts, external leak-tightness 19 5.2.4 Internal le
23、ak-tightness . 19 5.3 Rated flow rate 19 5.3.1 Apparatus 19 DIN EN 331:2016-04 EN 331:2015 (E) 3 5.3.2 Procedure 21 5.4 Operating torque 21 5.5 Torque and bending mechanical strength . 21 5.5.1 General . 21 5.5.2 Sequence of torsion and bending moment tests for valves . 21 5.6 Durability. 23 5.6.1 E
24、ndurance test . 23 5.6.2 Resistance to low temperature 23 5.6.3 Salt spray resistance 23 5.7 Angular seal 24 5.8 Safeguard against overloading of the handle Stop resistance . 24 6 Assessment and verification of constancy of performance - AVCP . 24 6.1 General . 24 6.2 Type testing 24 6.2.1 General .
25、 24 6.2.2 Test samples, testing and compliance criteria . 25 6.2.3 Test reports 26 6.2.4 Shared other party results 27 6.3 Factory production control (FPC) . 27 6.3.1 General . 27 6.3.2 Requirements . 28 6.3.3 Product specific requirements 30 6.3.4 Initial inspection of factory and FPC 31 6.3.5 Cont
26、inuous surveillance of FPC . 31 6.3.6 Procedure for modifications . 31 7 Marking, labelling, instructions and packaging 32 7.1 Marking and labelling . 32 7.2 Instructions for installation and operation 32 7.3 Packaging . 33 Annex A (normative) Resistance to high temperatures for valves classes B and
27、 C . 34 A.1 General . 34 A.2 Procedure (external leakage) 34 A.2.1 Test criteria 34 A.2.2 Test method 34 A.2.2.1 Apparatus 34 A.2.2.2 Test procedure 35 Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation . 37 ZA.1 Scope and re
28、levant characteristics 37 ZA.2 Procedure for AVCP of manually operated ball valves and closed bottom taper plug valves for gas installations for buildings . 39 ZA.3 CE marking and labelling . 41 Bibliography . 45 DIN EN 331:2016-04 EN 331:2015 (E) 4 European foreword This document (EN 331:2015) has
29、been prepared by Technical Committee CEN/TC 236 “Non industrial manually operated shut-off valves for gas and particular combinations valves-other products”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an
30、identical text or by endorsement, at the latest by June 2016, and conflicting national standards shall be withdrawn at the latest by September 2017. 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 h
31、eld responsible for identifying any or all such patent rights. This document supersedes EN 331:1998. The revised version: includes in one document the previous publications of 1998 and 2010 to allow an easier reading of the text; allocates the clauses and the annexes in line with the framework of th
32、e standards which support CPR; enlarges the field of application to the nominal sizes DN 65, 80 and 100; updates the technical content in line with the current edition of the referenced standards; considers the proposals coming from the experience of the application of the previous edition of EN 331
33、; adds Annex ZA for the relationship between this European Standard and the Essential Requirements of EN Construction Products Regulation. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requireme
34、nts of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austr
35、ia, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden
36、, Switzerland, Turkey and the United Kingdom. DIN EN 331:2016-04 EN 331:2015 (E) 5 1 Scope 1.1 This European Standard specifies the characteristics for the construction, performance and safety of ball valves and closed bottom taper plug valves. It also details the test methods and marking provisions
37、. It applies to metallic valves not directly buried for domestic and commercial installations inside or outside of buildings, using gases of the first, second and third family (specified in EN 437) and working up to 0,2 105Pa, 0,5 105Pa, 1 105Pa, 5 105Pa and 20 105Pa and with temperature limits from
38、 5 C or 20 C to + 60 C. NOTE “Not directly buried” within the context of this standard means that valves below ground are not in direct contact with earth or other materials e.g. that they are in a protected encasement. 1.2 Valve nominal sizes (DN) covered by this European Standard are as follows: 6
39、, 8, 10, 12, 15, 20, 25, 32, 40, 50, 65, 80, 100. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest editi
40、on of the referenced document (including any amendments) applies. EN 377, Lubricants for applications in appliances and associated controls using combustible gases except those designed for use in industrial processes EN 437:2003+A1:2009, Test gases - Test pressures - Appliance categories EN 549, Ru
41、bber materials for seals and diaphragms for gas appliances and gas equipment EN 682, Elastomeric Seals - Materials requirements for seals used in pipes and fittings carrying gas and hydrocarbon fluids EN 751-1, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family ga
42、ses and hot water - Part 1: Anaerobic jointing compounds EN 751-2, Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds EN 751-3, Sealing materials for metallic threaded joints in contact with 1st, 2nd a
43、nd 3rd family gases and hot water - Part 3: Unsintered PTFE tapes EN 1092-1, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 1: Steel flanges EN 1092-2, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories,
44、PN designated - Part 2: Cast iron flanges EN 1092-3, Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 3: Copper alloy flanges EN 1254-1, Copper and copper alloys - Plumbing fittings - Part 1: Fittings with ends for capillary soldering or c
45、apillary brazing to copper tubes EN 1254-2, Copper and copper alloys - Plumbing fittings - Part 2: Fittings with compression ends for use with copper tubes DIN EN 331:2016-04 EN 331:2015 (E) 6 EN 1254-8, Copper and copper alloys - Plumbing fittings - Part 8: Fittings with press ends for use with pla
46、stics and multilayer pipes EN 1412, Copper and copper alloys - European numbering system EN 1503-1, Valves Materials for bodies, bonnets and covers Part 1: Steels specified in European Standards EN 1503-3, Valves Materials for bodies, bonnets and covers Part 3: Cast irons specified in European Stand
47、ards EN 1555-3, Plastics piping systems for the supply of gaseous fuels Polyethylene (PE) Part 3: Fittings EN 1593:1999, Non-destructive testing - Leak testing - Bubble emission techniques EN 1982 Copper and copper alloys - Ingots and castings EN 10226 (all parts), Pipe threads where pressure tight
48、joints are made on the threads EN 10255, Non-Alloy steel tubes suitable for welding and threading Technical delivery conditions EN 12163 Copper and copper alloys - Rod for general purposes EN 12164 Copper and copper alloys - Rod for free machining purposes EN 12165 Copper and copper alloys - Wrought
49、 and unwrought forging stock EN 12167 Copper and copper alloys - Profiles and bars for general purposes EN 12168 Copper and copper alloys - Hollow rod for free machining purposes EN 12420 Copper and copper alloys - Forgings EN 12627, Industrial valves - Butt welding ends for steel valves EN 60730-1:2000, Automatic electrical controls for household and similar use - Part 1: General requirements (IEC 60730-1:1999, modified) EN ISO 228-1, Pipe threads where pressure-tight joints are not
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