1、BRITISH STANDARD Copper and copper alloys - Plumbing fittings - Part 3: Fittings with compression ends for use with plastics pipes The European Standard EN 12W.1998 has the status of a British Standard ICs 23.040.40 BS EN 12543: 1998 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT
2、 LAW BS EN 1264-3:1998 National foreword This British Standard is the English language version of EN 125431998. It supersedes BS 8643: 1990 which is declared obsolescent. The UK participation in its preparation was entrusted by Technical Committee NFE/34, Copper and copper alloys, to Subcommittee NF
3、EB.y3, Copper and copper alloy fittings for tube and pipe, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related intemationai and European developments and promulgate interpretation, or proposal
4、s for change, and keep the UK interests informed, them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement intemational or European publications referred to in this document may be fou
5、nd in the BSI Standards Catalogue under the section entitled “Internaional Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards
6、are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 13 and a back cover. This British Standard, having
7、 been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 16 June 1998 Q BSI 1998 ISBN O 580 29440 4 Amendments issued since publication Amd.No. (Date 1 Text affected STD-BSI BS EN L254-3-ENGL 1778 D Lb24bb9
8、Oj07qb Ob7 i EUROPEAN STANDARD NORME EUROPENNE E;iTROP- NOFN EN 12543 January 1998 ICs 23.040.40 Descriptors: Plastic tubes, copper, copper alioys, pipe fittings, joining, dimensions, dimensional tolerances, design, manufacturing, tests, designation, marking English version Copper and copper alloys
9、- Plurnbing fittings - Part 3 Fittins with compression ends for use with plastics pipes Cuivre et alliages de cuivre - Raccords - Partie 3 Raccords compression pour tuyaux en plastique Kupfer und Kupferlegierungen - Fittin - Teil 3 Klemverbindungen fr Kstbfrohre This European Standard was approved b
10、y CEN on 24 November 1998. CEN members are bound to comply with the CENKENELEC 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 stan
11、darcis may be obtained on application to the Central Secretariat 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 notined to
12、 the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norwas Portugal, Spain, Sweden, Switzerland and Unite
13、d Kingdom. European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fur Normung Central Secretariat: rue de Stassart 36, B-1060 Brussels O 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nationai Members. Ref. No. EN 125431
14、998 E STD.BSI BS EN 1254-3-ENGL 1998 Lb24bb9 0707847 TT3 Page 2 EN 1264-3:1998 Foreword This European Standard has been prepared by khnical Committee CENiC 133, Copper and copper alloys, the Secretariat of which is held by DIN. This European Standard shaii be given the status of a national standard,
15、 either by publication of an identical text or by endorsement, at the latest by July 1998, and conflicting national standards shall be withdrawn at the latest by July 1998. Within its programme of work, Technical Committee CENm 133 requested CENITC 133/WG 8, Copper and copper alloy fittings, to prep
16、are the following standard: EN 12543, Copper and copper alloys - plumbing fittings - Part 3: Fittings with compression ends for use with piastics pipes. This standard is one of five parts for copper and copper alloy fittings for joining copper tubes or piastics pipes. The other four parts of the sta
17、ndard are: EN 1254-1, Copper and copper alloys - plumbing fittings - Part 1: Fittings urith ends for capiuaml soming or capiuary Wng to copper tubes. EN 1254-2, Copper and copper allogs - Plumbing fittings - Part 2: Fittings with compnsswn ends fn- use with com tubes. EN 1254-4, Copper and copper al
18、loys - Pumbing fittings - Part 4: Fittings combining other end connections wiuL capdu?y or compression ends. EN 1254-5, Copper and copper alloys - Plumbing fittings - Part 5: fittings with short endsfor capillall bmnng to copper tubes. It is recommended that fiUings manufactured to this standard are
19、 certified as conforming to the requirements of this standard, based on third party testing and continuing surveillance, which should be coupled with an assessment of a suppliers quaiity system against the appropriate standard, i.e. EN IS0 9001 or EN Is0 9002. In respect of potential adverse effects
20、 on the Quality of water intended for human consumption caused by the product covered by this standard: a) this standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFik b) it should be noted that, while awaiting the adop
21、tion of verifiable European criteria, existkg national regulations concerning the use and/or the characteristics of this product remain in force. The attention of the user of this standard is drawn to the fact that national or local regulations or practices might reslxict the choice of dimensions an
22、d threads in the application of products conforming tothis standard According to the CENICENELEC Internal Regulations, the nationai standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, G
23、reece, Iceland, Ireland, Ita 32 Minimum wall thickness of fitting at pointa A, B or C Wrought coppers and copper alloys Cast coppers and copper alloys 1 ,o I 1.0 134 155 14 14,7 15 16 40 40,5 1 172 172 For fitting and internal support without O-ring 17 18 20 21 22 25 27,4 28 32 34 35 174 174 1,5 176
24、 198 175 176 45 63 I2,o 75 12.6 50 274 2.8 55 60 65 70 Table 3 - Minimum wall thickness Dimensions in miiiimetres 90 I 279 1371 110 I 3,3 I 3,5 O BSI 1998 STD-BSI BS EN 1254-3-ENGL 1778 I Lb24bb7 0707851 42L( Page 6 EN 12543:1998 B - a B b) 4 NOTE Figure 1 is diagrammatic only and other systems will
25、 possibly satisfy the requirements. Figure 1 - Compression fittings, type A O BSI 1998 STD-BSI BS EN L254-3-ENGL 1998 1b24bb9 0707852 3b0 A B I MAX. a I I A 8 I MAX. b) I I NOTE Figure 2 is diagrammatic oniy and other systems will possibly satisfy the requirements. Figure 2 - Compression fittings, t
26、ype B 4.3.4 Tolerance for the alignment of thefitting ends The alignment of the ends of the fitting shall be within 2“ of the specified axis. 4.4 Design and manufacture 4.4.1 Maximum temperatures and pressures The mcurimum temperature and maximum pressure for the assembled joint are related to phtic
27、s pipe material performance, details of which are specified in the relevant plastics piping systems standards. 4.4.2 Compression fittings, tgpe A Except for those fittings which include internal supports, type A compression fittings are suitable for use with various plastics pipes. Qpe A compression
28、 fittings with inted supports are recommended for use only with polyolefin pipe materials. NOTE internai supports are specific to the type of pipe and to each manufacturer of fittings. They should not be interchanged. 4.4.3 Compression fittings, tgpe B Type B compression fittings shali only be used
29、with polyolefin pipe marials. 4.4.4 Pipe abutment Fittings shall be manufactured either: a) with an abutment to hit pipe insertion, and for type A fittings, to retain a loose intend support, if used; or b) without an abutment. Page 7 EN 12543:1998 4.4.6 IFghtening systems Shapes for transmitting tig
30、htening torques are required on compression nuts and straight bodies. 4.4.6 Surface condition Fttings shall be clean and free from sharp edges. 4.4.7 Plated or coated su daces Requirements for plated or coated surfaces shall be the subject of agreement between the purchaser and the mufacturer. 4.6 P
31、roduction test requirements 4.6.1 Pressure testforfittings bodies with as cast microstructure Fittings bodies shall give no visual indication of leakage when tested in accordance with 6.1. Fittings bodies which leak shall be scrapped No reclamation procedure shall be undertaken. 4.5.2 Resistance to
32、dezincification Components which are manufactured from alloys containing more than 10 % zinc and which are required to be resistant to dezincification, shaU be capable of meeting the acceptance crikria for resistance to dezincification. When tested in accordance with 6.2, the depth of dezincificatio
33、n, in any direction, shall be: - for grae A: maximum 200 pn; - for grade B mm not to exceed 200 pm and maximum 400 pn. 4.6 mpe test requirements 4.6.1 General The requirements in 4.6.2 to 4.6.8 are applicable to tests dependent on the intended application and plastics pipe material, see annex B. The
34、 requirements in 4.6.9 are applicable for tests irrespective of the application and materiai. 4.6.2 Leaktightness under internal pressure When tested in accordance with 6.3 fittings shall show no signs of leakage. 4.6.3 Resistance to pull-out When tested in accordance with 6.4 fittings shall show no
35、 signs of loosening or separation of the joint. 4.6.4 Leaktightness under internal pressure whilst subjected to bending When tested in accordance with 6.6 fittings shall show no signs of leakage. 4.6.6 Leaktightness under external hgdrostatic pressure When tested in accordance with 6.6 fittjngs shal
36、l show no signs of leakage. 4.6.6 Vacuum test When tested in accordance with 5.7 fittings shall show no signs of leakage. 4.6.7 Temperature cycling test When tested in accordance with 6.8 fittings shall show no signs of leakage. O BSI 1998 STD-BSI BS EN 125Y-3-ENGL 1998 m Lb2LibbS 0707853 2T7 Page 8
37、 EN 12543:1998 4.6.8 Pressure cgcling test When tested in accordance with 6.9 fittings shall show no signs of leakage. 4.6.9 Resistance to stress corrosion The fitting shall be resistant to stress corrosion. When tested in accordance with 6.10, components manufactured from copper alloys shaU show no
38、 evidence of cracking. 6 Test methods 6.1 Pressure test When required, the bodies of fittings with as cast microslncture, after machining, shall be pressure tested by the manufacturer. At the option of the manufacturer, they shall be submitted to a hydrostatic pressure test or to a pneumatic pressur
39、e test or to any other pressure test of equivalent perormance. The reference method of test shall be either by the application of an internal pneumatic pressure of a minimum of 5 bar with the fitting entirely immersed in water, or an internai hydroWc pressure test for the relevant size range at ambi
40、ent temperature: - for cold water systems, a minimum of 1,5 times nominal pressure according to the relevant plastics piping systems stan-, - for combined hot and cold water systems, a minimum of 15 bar. 6.2 Dezincification resistance test When a dezincication mistance test is to be carried out, the
41、 test method given in EN IS0 6509 shall be used. At the completion of the test: - for grade A, the maximum depth of dezincifidon shall be measured; - for grade B, the mean depth of dezincification (see annex C) and the maximum depth of dezincifidon shall be measured If any of the test pieces fail th
42、e dezincfication resistance test, further test samples from the same batch shall be selected for retesting. If all of the further test pieces pass the test, the batch represented shal be deemed to conform to the requirements of this standard for dezincification resistance. If any of the further test
43、 pieces fail, then the batch represented shail be deemed not to conform to this standard 6.3 Leaktightness under internal pressure When a test for leaktighlms under internal pressure is to be carried out (see annex B), the test method shaii be in accordance with EN 715. 6.4 Resistance to pull-out Wh
44、en a test for resistance to pull-out is to be carried out (see annex B), the test method shail be in accordance with EN 712. 6.6 Leaktightness under internal pressure whilst subjected to bending When a test for leaktightness under internal pressure whilst subjected to bending is to be carried out (s
45、ee annex B), the test method shall be in accordance with EN 713. 6.6 Leaktightness under external hydrostatic pressure When a test for leaktightness under extend hydrostaic pressure is to be carried out (see annex B), the test method shall be in accordance with EN 911. 6.7 Vacuum test When a vacuum
46、test is to be carried out (see annex B), the test method shall be in accordance with prEN 12294. 6.8 Thermal cycling test When a hed cyciuig test is to be carried out (see annex B), the test method shall be in accordance with prEN 12293. 6.9 Pressure cycling test When a pressure cycling test is to b
47、e carried out (see annex B), the test method shall be in accordance with prEN 12295. 6.10 Stress corrosion resistance test When a stress corrosion resistance test is to be carried out, fittings shall be tested according to the method in IS0 6957 using test solution of pH 9,5, without prior pickling.
48、 6 Designation Fittings shall be designated by quoting: a) common term or manufacturers catalogue number (see note 1); b) number and part of this standard (EN 1254-3); c) size of the connecting ends by the nominal outside diameter of the connecting pipe or, in the case of fittings incorporating thre
49、aded connections, in accordance with EN 1254-4 or other standards, by the thread designation (see note 2 for sequence of specifying ends); d) the specification of the plastics pipe with which the fimg is intended to be used; e) without abutment, if applicable; f) if required, the grade of dezincification resistance acceptance criteria; g) if required, the Qpe of plating or coating. NOTE 1 FMings are normaiiy designated either by a manufacturers catalogue number or by the common terms, coupiing, bend, elbow, tee, etc. NOTE 2 The prefe
