1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1254-5:1998 (Incorp
2、orating Corrigendum No. 1) The European Standard EN 1254-5:1998 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 5: Fittings with short ends for capillary brazing to copper tubesT
3、his British Standard, having been prepared 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 29442 0 BS EN 1254-5:1998 Amendments issued since publication Amd. No. Date Text affected
4、 10100 Corr No. 1 July 1998 Indicated by a sideline in the margin | | National foreword This British Standard is the English language version of EN 1254-5:1998. The UK participation in its preparation was entrusted by Technical Committee NFE/34, Copper and copper alloys, to Subcommittee NFE/34/3, Co
5、pper 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 interpretation, or proposals for change, and keep the UK interests informed; monitor related international and E
6、uropean developments and 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
7、 Standards Catalogue under 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 respons
8、ible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 19
9、98 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1254-5:1998 E EUROPEAN STANDARD EN 1254-5 NORME EUROPE ENNE EUROPA ISCHE NORM January 1998 ICS 23.040.40 Descriptors: Copper tubes, copper, copper alloys, pipe fittings, connection
10、s for welding, joining, dimensions, dimensional tolerances, design, manufacturing, tests, designation, marking English version Copper and copper alloys Plumbing fittings Part 5: Fittings with short ends for capillary brazing to copper tubes Cuivre et alliages de cuivre Raccords Partie 5: Raccords a
11、embo ture courte pour brasure forte par capillarite pour tubes en cuivre Kupfer und Kupferlegierungen Fittings Teil 5: Fittings mit geringer Einstecktiefe zum Verbinden mit Kupferrohren durch Kapillar-Hartlo ten This European Standard was approved by CEN on 24 November 1997. CEN members are bound to
12、 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 Centra
13、l 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 notified to the Central Secretariat has the same status as th
14、e official versions. CEN 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 1254-5:1998 BSI 1998 Foreword
15、 This European Standard 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
16、 1998, and conflicting 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 1254-5, Copper and copper alloys Plumbing fittings
17、Part 5: Fittings with short ends for capillary brazing to 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
18、 with ends for capillary soldering or capillary brazing to copper tubes. EN 1254-2, Copper and copper alloys Plumbing fittings Part 2: Fittings with compression ends for use with copper tubes. EN 1254-3, Copper and copper alloys Plumbing fittings Part 3: Fittings with compression ends for use with p
19、lastics pipes. EN 1254-4, Copper and copper alloys Plumbing fittings Part 4: Fittings combining other end connections with capillary or compression ends. It is recommended that fittings manufactured to this standard are certified as conforming to the requirements of this standard based on third part
20、y testing and continuing 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 cov
21、ered by this standard: 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 t
22、he use and/or 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 restrict the choice of dimensions and threads in the application of products conforming to this standard. According to
23、the CEN/CENELEC Internal 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,
24、 Sweden, Switzerland 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 capillary end 3 3.3 reducer (short end for capillary brazing to copper tube) 3 3.4 adaptor fitting 3 3.5 nominal diameter 3 4 Requirements 3 4.1 General
25、 3 4.2 Materials 3 4.3 Dimensions and tolerances 4 4.4 Design and manufacture 7 4.5 Production test requirements 8 4.6 Type test requirements 9 5 Test methods 9 5.1 Assembly dimensions 9 5.2 Leaktightness under internal hydrostatic pressure 9 5.3 Pressure test 12 5.4 Carbon in bore tests 12 5.5 Dezi
26、ncification resistance test 12 5.6 Stress corrosion resistance test 12 6 Designation 12 7 Marking 12 7.1 General 12 7.2 Dezincification resistant copper-zinc alloys 12 8 Documentation 12 8.1 Declaration of conformity 12 8.2 User instructions 12 Annex A (normative) Carbon film test 13 Annex B (normat
27、ive) Determination of mean depth of dezincification 13 Annex C (informative) Bibliography 14Page 3 EN 1254-5:1998 BSI 1998 1 Scope This European Standard specifies materials, assembly dimensions and tolerances and test requirements for fittings of copper and copper alloys with or without plating. Ma
28、ximum permissible temperatures and pressures are also established. This Part of EN 1254 specifies connection end dimensions of short cup ends suitable only for brazing, for the purposes of joining copper tubes specified in EN 1057. Fittings may comprise a combination of any of the end types specifie
29、d 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 publications. These normative references are cited at the appropriate place
30、s 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 revision. For undated references, the latest edition of the publication refer
31、red to applies. EN 723, Copper and copper alloys Combustion method for determination of carbon on the inner surface of copper tubes or fittings. 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
32、Plumbing fittings Part 1: Fittings with ends for capillary soldering or capillary brazing to copper tubes. EN 1254-2, Copper and copper alloys Plumbing fittings Part 2: Fittings with compression ends for use with copper tubes. EN 1254-3, Copper and copper alloys Plumbing fittings Part 3: Fittings wi
33、th 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 ends. EN ISO 6509:1995, Corrosion of metals and alloys Determination of dezincification resistance of brass. (ISO 6509
34、:1981) ISO 6957, Copper alloys Ammonia test for stress 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 C. 3 Definitions For the purposes of this standard,
35、 the following definitions apply. 3.1 plumbing fitting 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 capillary end end in which the joint is made by the flow of brazing alloy by capillary action into the annular space
36、 3.3 reducer (short end for capillary brazing to copper tube) component used to enable an 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 the other ends, see the relevan
37、t parts of this standard or other standards. 3.5 nominal diameter nominal diameter of the fitting end expressed as the nominal outside diameter of the connecting tube 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
38、requirements of 4.6. Reducers also shall conform to these requirements. 4.2 Materials 4.2.1 General 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 fitt
39、ings manufactured from them 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/TC 133 Secretariat.Page 4 EN 1254-5:199
40、8 BSI 1998 Table 2 Tolerances on the nominal diameter Values in millimetres Nominal diameter Tolerances on the mean diameter 1) with respect to the nominal diameter D Resulting diametrical difference D Outside diameter of male end Inside diameter of socket Max. Min. 14,7; 15; 16; 18 +0,04 +0,15 0,20
41、 0,02 20,05 +0,06 21; 22; 25; 27,4; 28 +0,05 +0,18 0,24 0,02 20,06 +0,07 34; 35; 40; 40,5; 42; 53,6; 54 2) +0,06 +0,23 0,30 0,03 20,07 +0,09 64; 66,7; 70; 76,1; 80; 88,9; +0,07 +0,33 0,41 0,03 106; 108 2) 20,08 +0,10 2) 133; 159 + 0,20 +0,70 0,90 0,03 20,20 +0,23 1) Arithmetical mean of two diameter
42、s at right angles in a cross-section taken anywhere on the length of the socket or of the male end. 2) The brazing of tubes and fittings for these diameters requires special precautions regarding working practices. a) b) Figure 1 Socket Table 1 Examples of commonly used materials Material designatio
43、n Standard Symbol Number Cu-DHP CW024A prEN 12449 CuSn5Zn5Pb5-C CC491K prEN 1982 CuZn39Pb3 CW614N EN 12164 CuZn33Pb2-C CC750S prEN 1982 NOTE These examples do not constitute an exhaustive list. 4.2.2 Choice of materials Cu-ETP (CW004A) is not a permitted material for brazing fittings and shall not b
44、e used for their manufacture. 4.3 Dimensions and tolerances 4.3.1 Tolerances on diameters The standardized nominal dimensions; diameters and their tolerances, are given in Table 2. The socket and male end tolerances on diameter shall be in accordance with Table 2, which shall be verified by the use
45、of gauges shown in Figures 5 and 6 and Tables 7 and 8. NOTE 1 Tolerances in accordance with Table 2 and the use of gauges in accordance with Tables 7 and 8 will ensure the distribution of brazing alloy throughout the joint and will allow for the alignment of the male end of a fitting or the free end
46、 of a tube in the socket. NOTE 2 When capillary fittings are used for brazing to copper tubes, the ends of the tubes should be sized to the outside diameter dimensions specified in Table 2 for a length not less than the length of engagement of the fitting. NOTE 3 Socket and male ends are shown diagr
47、ammatically in Figures 1 and 2. NOTE 4 The installation dimensions cannot be standardized due to varying manufacturing processes. The manufacturer should be consulted for these dimensions.Page 5 EN 1254-5:1998 BSI 1998 a) b) *) When the male end diameter is less than the fitting diameter, L 1 for th
48、e male end should be increased by L 2 (see Table 3). Figure 2 Male end 4.3.2 Minimum lengths of engagement The minimum lengths of engagement of sockets and male ends shall be in accordance with Table 3. The length L 1 for integral brazing ring fittings shall not include the width of the brazing allo
49、y groove see Figure 1 b). Male ends intended for use with integral ring sockets shall include an allowance for the width of the brazing alloy groove. 4.3.3 Minimum bore area The minimum cross-sectional area of the bore through each fitting shall be not less than the theoretical minimum area of the bore given in Table 4, except that for unequal-ended or adaptor fittings with ends specified in EN 1254-1, EN 1254-2, EN 1254-3 and EN 1254-4 or other standards, the smallest diameter shall a
