1、BSI Standards PublicationBS EN 14420-8:2013Hose fittings with clamp unitsPart 8: Symmetrical half coupling (Guilleminsystem)Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN
2、14420-8:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14420-8:2013.It supersedes BS EN 14420-8:2004+A1:2007 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/66, Rubber and plastics tubing, hoses and hoseas
3、semblies.A list 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
4、 StandardsLimited 2013ISBN 978 0 580 72882 2ICS 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
5、affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14420-8:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14420-8 July 2013 ICS 23.040.70 Supersedes EN 14420
6、-8:2004+A1:2007English Version Hose fittings with clamp units - Part 8: Symmetrical half coupling (Guillemin system) Raccords pour flexibles avec demi-coquille - Partie 8: Demi raccords symtriques (systme Guillemin) Schlaucharmaturen mit Klemmfassungen - Teil 8: Symmetrische Kupplungen (System Guill
7、emin) This European Standard was approved by CEN on 15 May 2013. 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 r
8、eferences concerning such national standards may be obtained on application 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
9、 CEN member into its own language and notified to the CEN-CENELEC Management 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 Maced
10、onia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, 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 EURO
11、PISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14420-8:2013: ECopyright European Committee for Standardization Provided by IHS under license with
12、 CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14420-8:2013EN 14420-8:2013 (E) 2 Contents Page Foreword 3 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Requirements .6 4.1 Pressures 6 4.2 Temperatures .6 5 Components .7 6 Dimensions .7
13、7 Types of connections 9 8 Designation . 10 9 Materials 10 9.1 General . 10 9.2 Coupling components 10 9.3 Main gaskets: 11 9.4 Thread gaskets: 11 10 Marking 11 11 Type testing and quality control . 12 Annex A (normative) Gauge for symmetrical half couplings (Guillemin system) 13 A.1 General . 13 A.
14、2 Dimensions, designation . 13 A.3 Material 16 Bibliography . 17 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14420-8:2013EN 14420-8: 2013 (E) 3 Foreword This document (
15、EN 14420-8:2013) has been prepared by Technical Committee 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
16、 latest by January 2014, and conflicting national standards shall be withdrawn at the latest by January 2014. 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
17、all such patent rights. This document supersedes EN 14420-8:2004+A1:2007. In comparison to EN 14420-8:2004+A1:2007, the following changes have been made: In Clause 2, the normative references have been updated. A new Clause 3 “Terms and definitions“ has been added. Table 2 has been divided into a ne
18、w Table 2 and Table 3. In 9.2, the list of materials for coupling components has been supplemented by cast and wrought aluminium alloys. The requirements on main gasket materials in 9.3 and thread gasket materials in 9.4 have been specified. In Clause 10, the requirements for marking have been revie
19、wed. The Bibliography has been reviewed. The standard has been revised editorially. EN 14420, Hose fittings with clamp units consists of the following parts: Part 1: Requirements, types of fixing and connection, designation and testing Part 2: Hose side parts of hose tail Part 3: Clamp units, bolted
20、 or pinned Part 4: Flange connections Part 5: Threaded connections Part 6: TW tank truck couplings Part 7: Cam locking couplings Part 8: Symmetrical half coupling (Guillemin system) Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction o
21、r networking permitted without license from IHS-,-,-BS EN 14420-8:2013EN 14420-8:2013 (E) 4 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, C
22、zech Republic, Denmark, Estonia, Finland, Former Yugoslav 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 King
23、dom. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14420-8:2013EN 14420-8: 2013 (E) 5 1 Scope This European Standard specifies dimensions, types of connections, quality o
24、f materials, marking requirements and testing requirements for hose fittings with symmetrical half couplings (Guillemin system), with mobile locking ring, for hose assemblies with a maximum working pressure of up to 10 bar1)with hose tails according to EN 14420-2 and clamp units according to EN 1442
25、0-3. Couplings in accordance with this document serve as link between hoses and connections to transport liquids, solids (e.g. powders, granules) except steam and liquid gas. The working temperature range is 20 C up to +65 C. 2 Normative references The following documents, in whole or in part, are n
26、ormatively referenced in this document and are indispensable 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 573-3, Aluminium and aluminium alloys Chemical composit
27、ion and form of wrought products Part 3: Chemical composition and form of products EN 1706, Aluminium and aluminium alloys Castings Chemical composition and mechanical properties EN 1982, Copper and copper alloys Ingots and castings EN 10083-2, Steels for quenching and tempering Part 2: Technical de
28、livery conditions for non alloy steels EN 10088-1, Stainless steels Part 1: List of stainless steels EN 10213 Steel castings for pressure purposes EN 14420-1:2013, Hose fittings with clamp units Part 1: Requirements, types of fixing and connection, designation and testing EN 14420-2, Hose fittings w
29、ith clamp units Part 2: Hose side parts of hose tail EN 14420-3, Hose fittings with clamp units Part 3: Clamp units, bolted or pinned EN 14420-4, Hose fittings with clamp units Part 4: Flange connections EN 14420-5, Hose fittings with clamp units Part 5: Threaded connections EN 22768-1, General tole
30、rances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (ISO 2768-1) EN 22768-2, General tolerances Part 2: Geometrical tolerances for features without individual tolerance indications (ISO 2768-2) EN ISO 228-1, Pipe threads where pressure-tight joints ar
31、e not made on the threads Part 1: Dimensions, tolerances and designation (ISO 228-1) EN ISO 8330:2008, Rubber and plastics hoses and hose assemblies Vocabulary (ISO 8330:2007) 1) 1 bar = 0,1 MPa. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo
32、reproduction or networking permitted without license from IHS-,-,-BS EN 14420-8:2013EN 14420-8:2013 (E) 6 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 8330:2008 and the following apply. 3.1 DN (nominal size) alphanumeric designation of size for
33、 components of a pipework system, which is used for reference purposes. It comprises the letters DN followed by a dimensionless whole number which is indirectly related to the physical size, in millimetres, of the bore or outside diameter of the end connections. Note 1 to entry: The number following
34、 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 designation system, any relationship between DN and component dimensions should be given, e.g. D
35、N/OD or DN/ID. SOURCE: EN ISO 6708:1995, 2.1 3.2 main gasket interface gasket between the male and female part of a coupling 3.3 thread gasket flat faced gasket for threads according to EN ISO 228-1 4 Requirements 4.1 Pressures Symmetrical half-couplings (Guillemin system), with mobile locking-ring,
36、 shall resist to the following pressures: a) Maximum working pressure = 16 bar; b) Test pressure = 24 bar; c) Minimum burst pressure = 48 bar. NOTE 1 bar = 0,1 MPa. 4.2 Temperatures The range of working temperatures of couplings equipped with nitrile butadiene rubber gasket (NBR-gasket) is 20 C to +
37、65 C. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14420-8:2013EN 14420-8: 2013 (E) 7 5 Components Figure 1 shows a coupling with hose tail (Type SGD) and a plug (Type S
38、GB) as samples. Key ahose tail blocking ring cchain dmain gasket eretainer ring fbody of plug Figure 1 Coupling with hose tail (Type SGD) and plug (Type SGB) 6 Dimensions General dimensions are given in Figure 2 and Table 1. Details which are not fixed shall be chosen by the manufacturer. For gauges
39、 see Annex A. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14420-8:2013EN 14420-8:2013 (E) 8 Key ahelix right pitch P bmedial plan caccording to EN 14420-4 *) K is measu
40、red in the plan bb NOTE For H and G see Table 1. Figure 2 General dimensions Table 1 General dimensions Dimensions in millimetres Nominal size A C D E F G H K L O P R DN max. min. 20 19 10+32 31 38 36,5 14,5 14,5 10 0,1 8,7 0,1 23 6 2,5 25 23 20+37,5 36,5 44 42,5 15 15 10 0,1 8,7 0,1 27,25 6 3 32 27
41、,5 5,20+42,5 41,5 50 48 15 15 11 0,1 9,7 0,1 32 6 3,5 40 38 20+55 54 63 61 19,5 19,5 14,5 0,1 13,4 0,1 43 8 4 50 48 20+69 68 78 76 24,5 24,5 18,5 0,1 17,4 0,1 54 8 4 65 62 30+84 83 94 92 24 24 17 0,15 16 0,15 69 10 5 80 78 20+103 101 114,5 111,5 28 28 20 0,15 19 0,15 85 10 5 100 97 30+123 121 136 13
42、3 30 30 21 0,15 20 0,15 103,5 10 6 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14420-8:2013EN 14420-8: 2013 (E) 9 7 Types of connections Types of connections are shown
43、in Table 2. Dimensions for the main gasket and the retainer ring are given in Table 3. Table 2 Types of connections Dimensions in millimetres Figure Type Kind of connection Nominal size DN Thread according to EN ISO 228-1 SGD Hose tail 20 according to EN 14420-2 25 Hose tail to be connected 32 with
44、clamps units according to 40 EN 14420-3 50 65 80 Other dimensions see Clause 6 100 SGM External thread 20 G B according to EN 14420-5 25 G 1 B 32 G 1 B 40 G 1 B 50 G 2 B 65 G 2 B 80 G 3 B Other dimensions see Clause 6 100 G 4 B SGF Internal thread 20 G according to EN 14420-5 25 G 1 Flat-faced with
45、thread gasket 32 G 1 40 G 1 50 G 2 65 G 2 80 G 3 Other dimensions see Clause 6 100 G 4 SGS Welding connections 20 To be agreed between 25 purchaser and manufacturer 32 40 50 65 Other dimensions see Clause 6 80 100 SGB Plug with chain and “S“ hook 20 length 300 mm (min.), capable 25 of supporting at
46、least 10 times 32 the weight of the plug 40 50 65 Other dimensions see Clause 6 80 100 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 14420-8:2013EN 14420-8:2013 (E) 10 Ta
47、ble 3 Dimensions for main gasket and retainer ring Main gasket DN O M N Retainer ring DN D d min. min. Other specifications see Clause 9 20 23 3,5 2,5 Other specifications see Clause 9 20 22 20/10 25 27,25 4 3,5 25 30 20/10 32 32 4,5 3 32 31 20/10 40 43 5 4 40 44 20/10 50 54 5 5 50 56 20/10 65 69 6
48、5 65 71 25/10 80 85 6 5,5 80 85 30/10 100 103,5 7 7 100 108 30/10 8 Designation Examples of ordering designations: EXAMPLE 1 Half-coupling with hose tail and collar, nominal size DN 80 made of stainless steel (1.4404): Half coupling EN 14420-8 SGD 80 1.4404 EXAMPLE 2 Half-coupling with internal thread nominal size DN 50 made of
