1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1254-2:1998 The Eur
2、opean Standard EN 1254-2:1998 has the status of a British Standard ICS 23.040.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Copper and copper alloys Plumbing fittings Part 2: Fittings with compression ends for use with copper tubesThis British Standard, having been prepar
3、ed under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 June 1998 BSI 1998 ISBN 0 580 29439 0 BS EN 1254-2:1998 Amendments issued since publication Amd. No. Date Text affected National foreword This British Standard
4、 is the English language version of EN 1254-2:1998. Together with BS EN 1254-1 it supersedes BS 864-2:1983 which is declared obsolescent. The UK participation in its preparation was entrusted by Technical Committee NFE/34, Copper and copper alloys, to Subcommittee NFE/34/3, Copper and copper alloy f
5、ittings 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 interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments an
6、d promulgate 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 international or European publications referred to in this document may be found in the BSI Standards Catalogue un
7、der the section entitled “International 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 are responsible for their correct
8、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 15 and a back cover.CEN European Committee for Standardization Comite Europe en de N
9、ormalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1254-2:1998 E EUROPEAN STANDARD EN 1254-2 NORME EUROPE ENNE EUROPA ISCHE
10、NORM January 1998 ICS 23.040.40 Descriptors: Copper tubes, copper, copper alloys, pipe fittings, joining, dimensions, dimensional tolerances, design, manufacturing, tests, designation, marking English version Copper and copper alloys Plumbing fittings Part 2: Fittings with compression ends for use w
11、ith copper tubes Cuivre et alliages de cuivre Raccords Partie 2: Raccords a compression pour tubes en cuivre Kupfer und Kupferlegierungen Fittings Teil 2: Klemmverbindungen fu r Kupferrohre This European Standard was approved by CEN on 24 November 1997. CEN members are bound to comply with the CEN/C
12、ENELEC 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 Central Secretariat or to an
13、y 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 Central Secretariat has the same status as the official versions. C
14、EN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1254-2:1998 BSI 1998 Foreword This European Standar
15、d has been prepared by Technical Committee CEN/TC 133, Copper and copper alloys, the secretariat of which is held by DIN. 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 July 1998, and conflicting
16、 national standards shall be withdrawn at the latest by July 1998. Within its programme of work, Technical Committee CEN/TC 133 requested CEN/TC 133/WG 8, Copper and copper alloy fittings, to prepare the following standard: EN 1254-2, Copper and copper alloys Plumbing fittings Part 2: Fittings with
17、compression ends for use with copper tubes. This standard is one of five parts for copper and copper alloy fittings for joining copper tubes or plastics pipes. The other four parts of the standard are: EN 1254-1, Copper and copper alloys Plumbing fittings Part 1: Fittings with ends for capillary sol
18、dering or capillary brazing to copper tubes. EN 1254-3, Copper and copper alloys Plumbing fittings Part 3: Fittings with compression ends for use with plastics pipes. EN 1254-4, Copper and copper alloys Plumbing fittings Part 4: Fittings combining other end connections with capillary or compression
19、ends. EN 1254-5, Copper and copper alloys Plumbing fittings Part 5: Fittings with short ends for capillary brazing to copper tubes. It is recommended that fittings manufactured to this standard are certified as conforming to the requirements of this standard, based on third-party testing and continu
20、ing surveillance, which should be coupled with an assessment of a suppliers quality system against the appropriate standard, i.e. EN ISO 9001 or EN ISO 9002. In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this standard
21、: 1) 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 EFTA; 2) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the cha
22、racteristics 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 restrict the choice of dimensions and threads in the application of products conforming to this standard. According to the CEN/CENELEC I
23、nternal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerl
24、and and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 3.1 plumbing fitting 3 3.2 compression end 3 3.3 reducer (compression end for copper tube) 3 3.4 adaptor fitting 3 3.5 nominal diameter 3 4 Requirements 4 4.1 General 4 4.2 Materials 4 4.3 Dimensi
25、ons and tolerances 4 4.4 Design and manufacture 9 4.5 Production test requirements 10 4.6 Type test requirements 10 5 Test methods 10 5.1 Sampling procedure 10 5.2 Preparation of fittings for testing 10 5.3 Test sequence 11 5.4 Leaktightness under internal hydrostatic pressure 11 5.5 Resistance to p
26、ull-out 11 5.6 Leaktightness under internal hydrostatic pressure whilst subjected to bending 11 5.7 Pressure test 13 5.8 Dezincification resistance test 13 5.9 Stress corrosion resistance test 13 6 Designation 14 7 Marking 14 7.1 General 14 7.2 Dezincification resistant copper-zinc alloys 14 8 Docum
27、entation 14 8.1 Declaration of conformity 14 8.2 User instructions 14 Annex A (normative) Determination of mean depth of dezincification 15 Annex B (informative) Bibliography 15Page 3 EN 1254-2:1998 BSI 1998 1 Scope This European Standard specifies materials, assembly dimensions and tolerances and t
28、est requirements for fittings of copper and copper alloys with or without plating or coating. Maximum permissible temperatures and pressures are also established. This part of EN 1254 specifies connection end dimensions of compression ends for the purposes of joining copper tubes specified in EN 105
29、7. Fittings may comprise a combination of any of the end types specified in EN 1254-1 to EN 1254-5 or other standards. The standard establishes a designation system for the fittings. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publ
30、ications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revisi
31、on. For undated references, the latest edition of the publication referred to applies. EN 1057, Copper and copper alloys Seamless, round copper tubes for water and gas in sanitary and heating applications. EN 1254-1, Copper and copper alloys Plumbing fittings Part 1: Fittings with ends for capillary
32、 soldering or capillary brazing to copper tubes. EN 1254-3, Copper and copper alloys Plumbing fittings Part 3: Fittings with compression ends for use with plastics pipes. EN 1254-4, Copper and copper alloys Plumbing fittings Part 4: Fittings combining other end connections with capillary or compress
33、ion ends. EN 1254-5, Copper and copper alloys Plumbing fittings Part 5: Fittings with short ends for capillary brazing to copper tubes. EN ISO 6509:1995, Corrosion of metals and alloys Determination of dezincification resistance of brass. (ISO 6509:1981) ISO 6957, Copper alloys Ammonia test for stre
34、ss corrosion resistance. NOTE Informative references to documents used in the preparation of this standard, and cited at the appropriate places in the text, are listed in a bibliography, see annex B. 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 plumbing fitti
35、ng device used in a tube system for the purpose of connecting the tubes either to each other or to a component part of a system 3.2 compression end end in which the joint is made by the compression of a ring or sleeve on the outside wall of the tube 3.2.1 compression end, type A end that requires no
36、 preparation of the ends of the tube other than that they are cut square and deburred, or chamfered when specified, and in which the joint is made by the compression of a ring or sleeve onto the outside wall of the tube with or without additional sealing elements and with or without an internal tube
37、 support 3.2.2 compression end, type B end that requires forming of the tube at its end, and in which the joint is made by compressing the formed portion of the tube against the formed end of the fitting or a loose ring or sleeve within the fitting/tube 3.3 reducer (compression end for copper tube)
38、component or components used to enable a compression end to connect tube of a smaller nominal diameter than the nominal diameter of the fitting end 3.4 adaptor fitting fitting combining more than one type of end NOTE For details of other ends, see the relevant parts of this standard or other standar
39、ds. 3.5 nominal diameter nominal diameter of the fitting end expressed as the nominal outside diameter of the connecting tubePage 4 EN 1254-2:1998 BSI 1998 4 Requirements 4.1 General Fittings shall conform to the requirements of 4.2 to 4.5 and shall be capable of meeting the type testing requirement
40、s of 4.6. Reducers shall also conform to these requirements. 4.2 Materials Fittings shall be made from copper or copper alloys selected from materials either: specified in European copper and copper alloy product standards; or registered by CEN/TC 133; provided that the fittings manufactured from th
41、em meet the functional requirements of this standard. NOTE Some of the standardized coppers and copper alloys commonly used for the manufacture of fittings are shown in Table 1. Details of registered alloys can be obtained from the CEN/TC133 Secretariat. Table 1 Examples of commonly used materials M
42、aterial designation Standard Symbol Number Cu-DHP CW024A prEN 12449 CuSn5Zn5Pb5-C CC491K prEN 1982 CuZn36Pb2As CW602N EN 12164 CuZn39Pb3 CW614N EN 12164 CuZn33Pb2-C CC750S prEN 1982 CuZn15As-C CC760S prEN 1982 NOTE These examples do not constitute an exhaustive list. 4.3 Dimensions and tolerances 4.
43、3.1 Minimum bore area The minimum cross-sectional area of the bore through each fitting, excluding any internal support, shall be not less than the theoretical minimum area of the bore given in Table 2, except that for unequal-ended or adaptor fittings with ends specified in EN 1254-1, EN 1254-3, EN
44、 1254-4 and EN 1254-5, or other standards, the smallest diameter shall apply provided that this diameter does not restrict other outlets. Table 2 Minimum bore Dimensions in millimetres Nominal diameter D Minimum bore 6 4,0 8 6,0 9 7,0 10 12 9,0 14 10,0 14,7 11,0 15 16 12,0 18 14,0 21 18,0 22 25 21,0
45、 27,4 23,0 28 34 29,0 35 40 35,0 40,5 36,0 42 53,6 47,0 54 64 55,0 66,7 57,0 70 60,0 76,1 65,0 80 68,0 88,9 76,0 108 92,0 4.3.2 Minimum wall thickness The minimum wall thickness of fittings shall conform to the appropriate requirements of Table 3 for the points A, B and C shown for different types o
46、f fittings in Figures 1, 2 and 3. The minimum wall thickness specified in Table 3 does not apply along the cone angle or to the thickness of the loose ring or sleeve where such a ring or sleeve has been or is intended to be deformed to form a seal.Page 5 EN 1254-2:1998 BSI 1998 Table 3 Minimum wall
47、thicknesses Dimensions in millimetres Nominal diameter D Minimum wall thickness of fitting at points A, B and C Wrought coppers and copper alloys Cast coppers and copper alloys 6 1,0 1,0 8 9 10 12 1,1 1,1 14 14,7 1,2 1,2 15 16 18 1,4 1,4 21 22 1,5 25 1,6 27,4 1,5 28 1,8 34 1,6 35 40 1,8 2,0 40,5 42
48、53,6 1,9 2,3 54 64 2,0 2,4 66,7 70 1) 2,3 2,6 76,1 1) 2,6 2,8 80 1) 2,8 2,9 88,9 1) 2,9 3,1 108 1) 3,3 3,5 1) Flange type only, see Figure 3. NOTE See Figures 1, 2 and 3 for lettered dimensions.Page 6 EN 1254-2:1998 BSI 1998 a) b) c) NOTE Figure 1 is diagrammatic only and other systems will possibly
49、 satisfy the requirements. Figure 1 Compression fittings type A a) b) NOTE Figure 2 is diagrammatic only and other systems will possibly satisfy the requirements. Figure 2 Compression fittings type BPage 7 EN 1254-2:1998 BSI 1998 1 Minimum fastener size 8 mm NOTE Figure 3 is diagrammatic only and other systems will possibly satisfy the requirements. Figure 3 Flanged compression fittings 4.3.3 Tolerance for the alignment of the fitting ends The alignment of the ends of the fitting shal
