1、BSI Standards PublicationBS EN 14423:2013Clamp type couplingassemblies for use with steamhoses rated for pressures up to18 barCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS E
2、N 14423:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14423:2013. Itsupersedes BS EN 14423:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/66, Rubber and plastics tubing, hoses and hoseassemblies.A l
3、ist of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLi
4、mited 2013ISBN 978 0 580 72883 9ICS 23.040.70Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2013.Amendments issued since publicationDate Text affectedCopy
5、right European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14423:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14423 June 2013 ICS 23.040.70 Supersedes EN 14423:2004English Ver
6、sion Clamp type coupling assemblies for use with steam hoses rated for pressures up to 18 bar Raccords avec colliers de serrage pour tuyaux vapeur utilisant une pression jusqu 18 bar Schlaucharmaturen mit Klemmfassung fr Dampf bis 18 bar This European Standard was approved by CEN on 8 May 2013. CEN
7、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 appli
8、cation 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-CENELEC Man
9、agement 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, Italy, Latv
10、ia, 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 Management Centre: Avenue Marnix 17, B-100
11、0 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14423:2013: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without licen
12、se from IHS-,-,-BS EN 14423:2013EN 14423:2013 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .5 4 General requirements 6 5 Design and designation of coupling assemblies .6 5.1 Design .6 5.2 Ordering designation system .9 6 Hose dimensions .9 7 Design and di
13、mensions 9 7.1 General 9 7.2 Tail end fittings . 10 7.3 Connectors 10 7.4 Clamps . 17 8 Bolts and nuts . 20 9 Materials 20 9.1 Tail end fittings . 20 9.2 Weld-neck collars and flanges according to EN 1092-1 . 21 9.3 Loose flanges according to EN 1092-1 . 22 9.4 Union nuts . 22 9.5 Wire ring 22 9.6 G
14、askets 22 9.7 Clamps . 22 9.8 Bolts and nuts . 23 10 Marking 23 10.1 Hose fittings 23 10.2 Weld-neck collars and loose flanges 23 10.3 Union nuts . 23 10.4 Clamps . 23 11 Type testing and quality control . 24 11.1 General . 24 11.2 Type-test 24 11.3 Sampling 24 12 Mounting of hose fittings . 24 Bibl
15、iography . 25 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14423:2013EN 14423:2013 (E) 3 Foreword This document (EN 14423:2013) has been prepared by Technical Committee
16、CEN/TC 218 “Rubber and plastics hoses and hose assemblies”, the secretariat of which is held by BSI. 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 December 2013, and conflicting national standar
17、ds shall be withdrawn at the latest by December 2013. 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 held responsible for identifying any or all such patent rights. This document supersedes EN 1442
18、3:2004. In comparison to EN 14423:2004, the following changes have been made: In Clause 2, the normative references have been updated. Clause 3 “Terms and definitions“ has been amended. The term “seals“ has been replaced by “gaskets“ (main gasket/thread gasket). Restrictions on nominal size DN 32 ha
19、ve been deleted. In 9.1, 9.2, 9.3 and 9.8, the material lists have been revised. In Clause 10, the requirements for marking of hose fittings and union nuts have been revised. Clause 11 “Type testing and quality control“ has been restructured and amended. The Bibliography has been reviewed. The stand
20、ard has been revised editorially. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav
21、Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Copyright European Committee for Standardization Prov
22、ided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14423:2013EN 14423:2013 (E) 4 1 Scope This European Standard specifies the design, materials and dimensions of fittings for clamp type coupling assemblies for use with nominal s
23、izes DN 15 to DN 50 steam and hot water hoses. It covers assemblies up to a maximum working pressure of 18 bar1)(corresponding to a saturated steam temperature of 210 C). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispen
24、sable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10025-2, Hot rolled products of structural steels Part 2: Technical delivery conditions for non-alloy structur
25、al steels EN 10087, Free-cutting steels Technical delivery conditions for semi-finished products, hot-rolled bars and rods EN 10088-1, Stainless steels Part 1: List of stainless steels EN 10088-2, Stainless steels Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting
26、 steels for general purposes EN 10213, Steel castings for pressure purposes EN 10226-1, Pipe threads where pressure tight joints are made on the threads Part 1: Taper external threads and parallel internal threads Dimensions, tolerances and designation EN 10283, Corrosion resistant steel castings EN
27、 12164, Copper and copper alloys Rod for free machining purposes EN 12168, Copper and copper alloys Hollow rod for free machining purposes EN 12420, Copper and copper alloys Forgings EN ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel Part 2: Nuts with specified pro
28、perty classes Coarse thread and fine pitch thread (ISO 898-2) EN 22768-1:1993, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (ISO 2768-1:1989) EN 22768-2:1993, General tolerances Part 2: Geometrical tolerances for features without in
29、dividual tolerance indications (ISO 2768-2:1989) EN ISO 228-1, Pipe threads where pressure tight joints are not made on the threads Part 1: Dimensions, tolerances and designation (ISO 228-1) EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws a
30、nd studs with specified property classes Coarse thread and fine pitch thread (ISO 898-1) EN ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs (ISO 3506-1) 1) 1 bar = 0,1 MPa. Copyright European Committee for Standardization Provided by
31、 IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14423:2013EN 14423:2013 (E) 5 EN ISO 3506-2, Mechanical properties of corrosion-resistant stainless steel fasteners Part 2: Nuts (ISO 3506-2) EN ISO 4032, Hexagon regular nuts (style 1
32、) Product grades A and B (ISO 4032) EN ISO 4042, Fasteners Electroplated coatings (ISO 4042) EN ISO 4762, Hexagon socket head cap screws (ISO 4762) EN ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary (ISO 8330) EN ISO 15607, Specification and qualification of welding procedures for
33、 metallic materials General rules (ISO 15607) ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptable quality limit (AQL) for lot-by-lot inspection 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO
34、 8330 and the following apply. 3.1 DN (nominal size) alphanumeric designation of size for components of a pipework system, which is used for reference purposes., which comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physical size, in millimetres,
35、of the bore or outside diameter of the end connections Note 1 to entry: The number following the letters DN does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard. Note 2 to entry: In those standards which use the DN desi
36、gnation system, any relationship between DN and component dimensions should be given, e.g. DN/OD or DN/ID. SOURCE: EN ISO 6708:1995, 2.1 3.2 PN alphanumeric designation which is used for reference purposes related to a combination of mechanical and dimensional characteristics of a component of a hos
37、e fitting and which comprises the letters PN followed by a dimensionless number Note 1 to entry: The number following the letters PN does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard. 3.3 arithmetical mean deviation
38、of the assessed profile Ra arithmetic mean of the absolute ordinate values Z(x) within a sampling length: xxZlrRalrd)(10=SOURCE: EN ISO 4287:19982), 4.2.1 2) This document is currently impacted by the corrigendum EN ISO 4287:1998/AC:2008 and the draft amendment EN ISO 4287:1998/A1:2009. Copyright Eu
39、ropean Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14423:2013EN 14423:2013 (E) 6 3.4 main gasket interface gasket between the male and female part of a coupling 3.5 thread gasket flat fac
40、ed gasket for threads according to EN ISO 228-1 4 General requirements When coupling assemblies, consisting of tail end fittings and clamps of the dimensions given in Table 8, as well as bolts and nuts as specified in Table 9, are tested in accordance with Clause 11, the hose shall burst before the
41、coupling is dismantled. The bolts shall be adjustable so that the hose is prevented from slipping. Proof pressure shall be at 90 bar; burst pressure shall be at 180 bar at ambient temperature. 5 Design and designation of coupling assemblies 5.1 Design A clamp type coupling assembly is shown in Figur
42、e 1. Key For 1 to 5 see Table 1 aConnector end bTail end Figure 1 Coupling assembly Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14423:2013EN 14423:2013 (E) 7 Table 1 Li
43、st of coupling assembly components Item number Number of parts needed for one assembly Denomination 1 1 Tail end fitting 2 2 Clamp 3 4 Hexagon socket head cap screw 4 4 Hexagon nut 5 1 Connector NOTE A distinction is made between the connector end and the tail end of coupling assemblies. The former
44、is the part by which the coupling is connected to an appliance or pipe (for various types of connectors, see Table 2), while the latter (including the tail end fitting and clamp) is fastened to a hose (see 7.2 and 7.4). Copyright European Committee for Standardization Provided by IHS under license w
45、ith CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14423:2013EN 14423:2013 (E) 8 Table 2 Types of connectors Illustration Type Description Nominal size DN Thread size l1 mm Details FL PN 40 loose flange with weld-neck collar as in EN 1092-1 15 20 25 32 40
46、 50 110 115 115 125 140 155 See 7.3.1 FV PN 40 weld-neck flange as in EN 1092-1 See 7.3.2 G Union nut with thread gasket, with parallel thread according to EN ISO 228-1a15 20 25 32 40 50 G G G 1 G 1 G 1 G 2 80 80 80 90 105 115 See 7.3.4 GA Tapered male thread with external thread according to EN 102
47、26-1a15 20 25 32 40 50 R R R 1 R 1 R 1 R 2 95 95 100 110 125 140 See 7.3.5 aOther threads may be agreed between the purchaser and manufacturer. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license
48、 from IHS-,-,-BS EN 14423:2013EN 14423:2013 (E) 9 5.2 Ordering designation system Example for an ordering designation: Denomination Characteristics Coupling assembly EN 14423 FL 20 1.4571 1.0038 CW614N EN number Type of connector FL Weld-neck collar for loose flange FV Weld-neck flange G Union nut with parallel thread according to EN ISO 228-1 GA Tapered stud end according to EN 10226-1 DN (nominal size) Material designation for tail end fittings: (according to 9.1) for type
