BS EN 10242:1995 BRITISH STANDARD Incorporating Amendments Nos and Threaded pipe fittings in malleable cast iron The European Standard EN 10242:1994, with the incorporation of amendments A1:1999 and A2:2003, has the status of a British Standard ICS 23.040.40 ?? ? ?????? ???? ??? ??? ?? ???????? ? ?? ? ?? ?? ?? ?????? ? ?? ? ???????? ??? ? ? ? ? ? ? ? ? ? ? BS EN 10242:1995 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PSE/9, Pipe fittings other than cast iron, upon which the following bodies were represented: British Compressed Air Society British Fluid Power Association British Gas plc British Malleable Tube Fittings Association British Plumbing Fittings Manufacturers’ Association British Valve and Actuator Manufacturers’ Association Energy Industries Council Engineering Equipment and Materials Users’ Association Galvanizers’ Association Institution of Civil Engineers Institution of Water and Environmental Management Ministry of Defence Steel Tube Fittings Manufacturers’ Technical Association This 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 September 1995 Amendments issued since publication © BSI 28 August 2003 Amd No Date 10587 April 2000 14428 28 August 2003 The following BSI references relate to the work on this standard: Committee reference PSE/9 Draft for comment 91/84067 DC ISBN 580 24509 Comments Indicated by a sideline BS EN 10242:1995 Contents Committees responsible National foreword Foreword Text of EN 10242 © BSI 28 August 2003 Page Inside front cover ii i BS EN 10242:1995 National foreword This British Standard has been prepared under the direction of Technical Committee PSE/9, Pipe fittings other than cast iron, and is the English language version of EN 10242:1994 Threaded pipe fittings in malleable cast iron, including amendment A1:1999 and amendment A2:2003, as corrected by corrigendum August 1999, published by the European Committee for Standardization (CEN) This standard partially supersedes BS 143 and BS 1256:1986, which has been amended Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards online This publication does not purport to include all the necessary provisions of a contract Users are responsible for its 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, pages i and ii, the EN title page, pages to 38, an inside back cover and a back cover The BSI copyright notice displayed in this document indicates when the document was last issued Sidelining in this document indicates the most recent changes by amendment ii © BSI 28 August 2003 EN 10242 November 1994 +A1 April 1999 +A2 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM March 2003 ICS 23.040.40 incorporating corrigendum August 1999 Descriptors: pipe fittings, threaded fittings, cast iron, malleable cast iron, designation, design, dimensions, dimensional tolerances, screw thread, characteristics, tests, inspection, marking English version Threaded pipe fittings in malleable cast iron (includes amendments A1:1999 and A2:2003) Raccords de tuyauterie filetés en fonte malléable (inclut les amendements A1:1999 et A2:2003) Gewindefittings aus Temperguß (enthält Änderungen A1:1999 und A2:2003) This European Standard was approved by CEN on 1994-11-10; amendment A2 was approved by CEN on 28 November 2002 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 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 notified to 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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1994 Copyright reserved to CEN members Ref No EN 10242:1994 + A1:1999 + A2:2003 E EN 10242:1994 Foreword This European Standard has been prepared by ECISS/TC 29 of which the Secretariat is held by UNSIDER 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 May 1995, and conflicting national standards shall be withdrawn at the latest by May 1995 According to the CEN/CENELEC Internal Regulations, 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, Switzerland and the United Kingdom Foreword to amendment A1 This amendment EN 10242:1994/A1:1999 to EN 10242:1994 has been prepared by Technical Committee ECISS/TC 29, Steel tubes and fittings for steel tubes the Secretariat of which is held by UNI This amendment to the European Standard EN 10242:1994 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 1999, and conflicting national standards shall be withdrawn at the latest by October 1999 According to the CEN/CENELEC Internal Regulations, 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, Switzerland and the United Kingdom Foreword to amendment A2 This document (EN 10242:1994/A2:2003) has been prepared by Technical Committee ECISS/TC 29, Steel tubes and fittings for steel tubes, 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 identical text or by endorsement, at the latest by September 2003, and conflicting national standards shall be withdrawn at the latest by September 2003 According to 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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom © BSI 28 August 2003 EN 10242:1994 Contents Foreword Scope Normative references Types of fitting Terminology Materials Design Dimensions and tolerances Threads Manufacture 10 Required characteristics 11 Testing and inspection 12 Clause deleted 13 Designation of fittings 14 Marking Annex A (normative) Malleable cast iron fittings threaded to ISO 7-1 but having internal threads type Rc Annex B (informative) Quality assurance system and assessment of conformity Annex C (informative) Relationship with the essential requirements of the Construction Products Directive (89/106/EEC) Annex D (informative) Relationship between fitting size and nominal size (DN) Annex E (informative) Bibliography Figure — Forms of reinforcements Figure — Laying lengths z in the case of an angularly disposed fitting Figure — Laying length z in the case of an axially aligned fitting Figure — Pressure/temperature ratings Figure — Sequence of specifying outlets when the above mentioned abbreviated method does not apply © BSI 28 August 2003 Page 5 10 11 12 13 13 14 15 15 16 Table — Index of fitting types, symbols and index to tables and patterns Table — Design symbols Table — Tolerance on length Table — Lengths of engagement Table — Minimum depth of spanner flats Table — Pressure/temperature ratings Table — Design test pressures Tables of dimensionally standardized fitting types and sizes (Tables to 27) Table A.1 — Design symbols Table C.1 — Characteristics and corresponding clause in this standard for the essential requirements Table D.1 — Thread designation and nominal size 10 11 12 12 13 13 17 37 38 38 37 37 38 38 38 11 12 13 16 blank EN 10242:1994 Scope This standard specifies the requirements for the design and performance of threaded pipe fittings in malleable cast iron These fittings are for general purposes for the transmission of fluids and gases up to the limits of pressure and temperature specified in this standard They are intended for the connection of elements threaded in accordance with ISO 7-1, sizes ( to For use in conditions outside the pressure and temperature limits specified, reference shall be made to the manufacturer Normative references This European Standard incorporates by dated or undated reference, provisions from other publications 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 revision For undated references the latest edition of the publication referred to applies (including amendments) EN 10204:1991 , Metallic products — Types of inspection documents EN ISO 9001 , Quality systems — Model for quality assurance in design, development, production, installation and servicing (ISO 9001:1994) EN ISO 9002 , Quality systems — Model for quality assurance in production, installation and servicing (ISO 9002:1994) EN 45012 , General criteria for certification bodies operating quality system certification EN 1562 , Founding — Malleable cast irons ISO 7-1 , Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation EN ISO 228-1 , Pipe threads where pressure tight joints are not made on the threads — Part 1: Dimensions, tolerances and designation (Revision of ISO 228-1:2000) EN ISO 6708, Pipework components — Definition and selection of DN (nominal size) (ISO 6708:1995) Types of fitting Table gives an index to the fitting types, and patterns and symbols The symbols relate to the identification of fittings and may be used for designation (see 13.1 ) © BSI 28 August 2003 EN 10242:1 994 Table — Index of fitting types, symbols and index to tables and patterns Types Symbols A1 A Elbows Symbols B Tees Symbols C Crosses Symbols D Short bends Symbols E Pitcher tees Twin elbows Symbols G Long sweep bends A1/45 ° Patterns Table Table Table 10 Table Table 11 Table 11 C1 B1 A4 A4/45 ° Table Table Table 12 Table 12 Table D1 Table 13 D4 Table 14 Table 14 Table 14 G1 Table 15 G1/45 ° Table 15 G4 Table 15 G4/45 ° Table 14 G8 Table 17 Table 18 Table 17 Table 18 Table 17 E1 Table 10 E2 Table 16 © BSI 28 August 2003 EN 10242:1994 Table 17 Long sweep bends G1 Male and female long sweep bends G4 Male long sweep bends G8 Fitting sizes — ! ) " # 1! 1" 2" G1 (( ) ! ) " # 1! 1" (2 " ) (3) (4) G4 Dimensions — — () ) " # (1 ! ) (1 " ) (2) — — — G8 35 40 48 55 69 85 105 116 140 176 205 260 a Dimensions which are not specified are left to the discretion of the manufacturer ( ): see 7.1 Tolerances: see Table Threads: in accordance with ISO 7-1 26 mm 32 36 42 48 60 75 95 105 130 165 190 245 Laying lengths b mm 28 30 38 42 54 68 86 97 116 149 175 224 z © BSI 28 August 2003 EN 10242:1994 Table 18 45 ° long sweep bends G1/45 ° 45 ° male and female long sweep bends G4/45 ° Fitting sizes — () ) G1/45 ° " # 1! 1" (2 " ) (3) (! ) ) " # 1! 1" (2 " ) (3) G4/45 ° 26 30 36 43 51 64 68 81 99 113 a Dimensions Laying lengths mm mm 21 24 30 36 42 54 58 70 86 100 b 16 20 23 28 34 45 49 57 72 83 z Dimensions which are not specified are left to the discretion of the manufacturer ( ): see 7.1 Tolerances: see Table Threads: in accordance with ISO 7-1 © BSI 28 August 2003 27 EN 10242:1994 Table 19 28 © BSI 28 August 2003 EN 10242:1994 Table 20 Fitting sizes ) " M4 # 1! — — — Dimensions M4 reducing )×! "×! "×) (# × ) ) # ×" 1×" 1×# 1! × # 1! × 1" × 1" × 1! (2 × ! ) (2 × " ) Laying lengths mm 35 43 a mm 25 30 48 33 55 38 60 41 63 44 70 46 z Dimensions which are not specified are left to the discretion of the manufacturer ( ): see 7.1 Tolerances: see Table Threads: in accordance with ISO 7-1 © BSI 28 August 2003 29 EN 10242:1994 Table 21 30 © BSI 28 August 2003 EN 10242:1994 Table 22 © BSI 28 August 2003 31 EN 10242:1994 Table 23 Fitting sizes ! ) " # 1! 1" 2" Dimensions mm 10 11 12 13 16 19 a Dimensions which are not specified are left to the discretion of the manufacturer Dimension s : see 7.3 Threads: in accordance with ISO 228-1 Backnuts may be plain or recessed, and one face may be machined 32 © BSI 28 August 2003 EN 10242:1994 Table 24 Fitting sizes (( ) ! ) " # 1! 1" 2" T1 ( ! ) " # 1! 1" 2" T8 ( ! ) " # 1! 1" 2" Dimensions T9 — — () ) (" ) (# ) (1) — — — — — — T11 13 15 17 19 22 24 27 27 32 35 38 45 a 11 14 15 18 20 23 29 30 36 39 44 58 b mm 20 22 24 26 32 36 39 41 48 54 60 70 c — — 11 15 16 19 — — — — — — d Caps may have hexagon, round or other profiles at the manufacturer’s discretion Dimensions which are not specified are left to the discretion of the manufacturer ( ): see 7.1 Dimension s : see 7.3 Threads: in accordance with ISO 7-1 © BSI 28 August 2003 33 EN 10242:1994 Table 25 Fitting sizes — ! ) " # 1! 1" 2" — U1 — ! ) " # 1! 1" — — — U2 (( ) ! ) " # 1! 1" 2" U11 Dimensions — ! ) " # 1! 1" 2" — U12 38 42 45 48 52 58 65 70 78 85 95 110 a mm — 55 58 66 72 80 90 95 106 118 130 — Laying lengths b 24 22 25 22 22 24 27 32 30 31 35 38 z1 mm 45 48 53 57 63 71 76 82 91 100 — z2 Dimensions which are not specified are left to the discretion of the manufacturer ( ): see 7.1 Other types of seat design and seat materials shall be considered as standard providing dimensions a and b are observed Dimensions s1 and s2: see 7.3 Tolerances: see Note to 7.1 Threads: threads at outlets in accordance with ISO 7-1 Gaskets: see Table 27 CAUTION Unions (with or without gasket as appropriate to the seat design) should only be used as complete assemblies because component parts of unions made by different manufacturers, or component parts of different types of union made by the same manufacturer, are not necessarily interchangeable NOTE Unions U1 and U2 may be supplied with or without spigot at the manufacturer’s discretion 34 © BSI 28 August 2003 EN 10242:1994 Table 26 Fitting sizes — ) " # 1! 1" UA1 — UA2 ) " # 1! 1" ! ) " # 1! 1" UA11 Dimensions ! ) " # 1! 1" UA12 Laying lengths mm 48 52 58 62 72 82 90 100 a 61 65 76 82 94 107 115 128 b mm 21 25 28 33 38 45 50 58 c 11 15 15 18 21 26 31 34 z1 38 42 45 47 55 63 71 76 z2 Dimensions which are not specified are left to the discretion of the manufacturer Other types of seat design and seat materials shall be considered as standard providing dimensions a, b and c are observed Dimensions s and s2: see 7.3 Tolerances: see Note to 7.1 Threads: threads at outlets in accordance with ISO 7-1 Gaskets: see Table 27 CAUTION Unions (with or without gasket as appropriate to the seat design) should only be used as complete assemblies because component parts of unions made by different manufacturers, or component parts of different types of union made by the same manufacturer, are not necessarily interchangeable NOTE Union elbows UA1 and UA2 may be supplied with or without spigot at the manufacturer’s discretion © BSI 28 August 2003 35 EN 10242:1994 Table 27 Gaskets for unions and union elbows, flat seat U1, U2, UA1 and UA2 Fitting sizes of unions and union elbows ( ! ) " # 1! 1" 2" Diameters of gasket — 13 17 17 19 21 24 27 32 42 46 60 75 88 — d mm — 20 24 24 27 30 34 38 44 55 62 78 97 110 — Thread sizes of unions nuts (for guidance only) D Material and thickness of gasket: to be specified when ordering, depending on the application Thread sizes of union nuts: see 8.1.2 36 G" G* G# G# G+ G1 G 1( G 1! G 1" G2 G 2! G 2# G 3" G4 G5 G 5" © BSI 28 August 2003 EN 10242:1994 Annex A (normative) Malleable cast iron fittings threaded to ISO 7-1 but having internal threads type Rc A.1 Design In addition to the fitting designs identified by the design symbols A and B in 6.1 and Table 2, the fittings described in Table A.1 are also used Table A.1 — Design symbols Design symbol C R D R External Thread type Rc Internal Rc Material grade EN-GJMW-400-5 or EN-GJMB-350-10 EN-GJMW-350-4 or EN-GJMB-300-6 NOTE These designs have been included at the request of the United Kingdom A.2 Jointing Fittings of design symbols C and D shall be threaded in accordance with ISO 7-1 External threads shall be taper (R), internal threads shall be taper (Rc) A.3 Requirements Except as given in A.1 and A.2 , the requirements for fittings of design symbols C and D are as given in the main part of this standard Annex B (informative) Quality assurance system and assessment of conformity B.1 Quality assurance system Manufacturers of fittings to this standard should establish and maintain a documented quality system in accordance with EN ISO 9001, and certified by a third party certification body operating to EN 45012, as a means of ensuring that the fittings conform to the specified requirements B.2 Assessment of conformity In addition to Clause B.1 it is recommended that the conformity of threaded pipe fittings in malleable cast iron to this standard should be assessed according to the Construction Products Directive (89/106/EEC) Annex III Clause , item ii) third possibility, that is: 1) initial type test by the manufacturer; 2) factory control of production © BSI 28 August 2003 37 EN 10242:1994 Annex C (informative) Relationship with the essential requirements of the Construction Products Directive (89/106/EEC) Clarification of the reference numbers for the essential requirements as given in the Construction Products Directive 1) requirement with regard to the mechanical aspect; 2) requirement with regard to the aspect of fire; 3) requirement with regard to hygiene, health and environment; 4) requirement with regard to safety in use; 5) requirement with regard to noise protection; 6) requirement with regard to energy economics Table C.1 — Characteristics and corresponding clause in this standard for the essential requirements Characteristics Hot dip zinc coating — Leak tightness — — Reference number of the essential requirements Clauses 5.2.1 — — and 11.2 — Clause 11.4 — — — — Annex D (informative) Relationship between fitting size and nominal size (DN) The relationship between designation of thread size, which is the fitting size, and nominal size (DN) is given in Table D.1 for guidance only Table D.1 — Thread designation and nominal size Designation of thread size/fitting size ( ! ) " # 1 ! " 2" Nominal size, DN 10 15 20 25 32 40 50 65 80 100 125 150 Annex E (informative) Bibliography The following standards are referenced in the text of this standard and are listed here for information only ISO 7-2 , Pipe threads where pressure tight joints are made on the threads — Part 2: Verification by means of limit gauges ISO 228-2 , Pipe threads where pressure tight joints are not made on the threads — Part 2: Verification by means of limit gauges ISO 1460 , Metallic coatings — Hot dip galvanized coatings on ferrous materials — Gravimetric determination of the mass per unit area ISO 2178, Non-magnetic coatings on magnetic substrates — Measurement of coating thickness — Magnetic method ISO 2859 , Sampling procedures for inspection by attributes 38 © BSI 28 August 2003 blank BS EN 10242:1995 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: +44 (0)20 8996 9000 Fax: +44 (0)20 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001 Email: orders@bsi-global.com Standards are also available from the BSI website at http://www.bsi-global.com In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: info@bsi-global.com Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: membership@bsi-global.com Information regarding online access to British Standards via British Standards Online can be found at http://www.bsi-global.com/bsonline Further information about BSI is available on the BSI website at http://www.bsi-global.com Copyright BSI 389 Chiswick High Road London W4 4AL Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained Details and advice can be obtained from the Copyright & Licensing Manager Tel: +44 (0)20 8996 7070 Fax: +44 (0)20 8996 7553 Email: copyright@bsi-global.com