1、June 2016 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.70!%VpW“2517752www.din.deDIN
2、 EN 14420-8Hose fittings with clamp units Part 8: Symmetrical half coupling (Guillemin system);English version EN 14420-8:2013+A1:2016,English translation of DIN EN 14420-8:2016-06Schlaucharmaturen mit Klemmfassungen Teil 8: Symmetrische Kupplungen (System Guillemin);Englische Fassung EN 14420-8:201
3、3+A1:2016,Englische bersetzung von DIN EN 14420-8:2016-06Raccords pour flexibles avec demi-coquille Partie 8: Demi raccords symtriques (systme Guillemin);Version anglaise EN 14420-8:2013+A1:2016,Traduction anglaise de DIN EN 14420-8:2016-06SupersedesDIN EN 14420-8:2013-09www.beuth.deDTranslation by
4、DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 19 pages 06.16 2 A comma is used as the decimal marker. National foreword This document (EN 14420-8:2013+A1:2016) has been prepared by Technical Committee CEN/TC 218 “Rubber and pla
5、stics hoses and hose assemblies” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was DIN-Normenausschuss Rohrleitungen und Dampfkesselanlagen (DIN Standards Committee Piping and Boiler Plant), Working Committee NA 082-00-02 AA Schlauchkupplungen. Amendment
6、s This standard differs from DIN EN 14420-8:2013-09 as follows: a) in Subclause 4.1, item a), a normative reference to EN 14420-1:2013, 4.3, has been added; b) in Clause 5, Figure 1 and the corresponding key have been revised; c) the standard has been brought in line with the current rules of presen
7、tation (e.g. layout, font type). Previous editions DIN EN 14420-8: 2005-05, 2007-04, 2013-09 DIN EN 14420-8:2016-06 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14420-8:2013+A1 February 2016 ICS 23.040.70 Supersedes EN 14420-8:2013English Version Hose fittings with clamp units - Part 8: Symm
8、etrical 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 Guillemin) This European Standard was approved by CEN on 15 May 2013 and includes
9、 Amendment 1 approved by CEN on 7 December 2015. 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 concer
10、ning 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 CEN member into
11、 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 Macedonia, France, Ge
12、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE F
13、R NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14420-8:2013+A1:2016 EEN 14420-8:2013+A1:2016 (E) 2Contents Page European foreword . 3 1 Scope 4 2 Norm
14、ative references 4 3 Terms and definitions . 5 4 Requirements . 5 4.1 Pressures 5 4.2 Temperatures . 5 5 Components 5 6 Dimensions 6 7 Types of connections . 8 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
15、 11 Type testing and quality control . 12 Annex A (normative) Gauge for symmetrical half couplings (Guillemin system) 13 A.1 General . 13 A.2 Dimensions, designation . 13 A.2.1 General . 13 A.2.2 Gauge A 13 A.2.3 Gauge B 15 A.3 Material 16 Bibliography . 17 DIN EN 14420-8:2016-06 EN 14420-8:2013+A1:
16、2016 (E)3European foreword This document (EN 14420-8:2013+A1:2016) 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 publicat
17、ion of an identical text or by endorsement, at the latest by August 2016, and conflicting national standards shall be withdrawn at the latest by August 2016. 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
18、 not be held responsible for identifying any or all such patent rights. This document includes Amendment 1 approved by CEN on 2015-12-07. This document supersedes !EN 14420-8:2013“. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. !deleted text“ EN
19、 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 or pinned Part 4: Flange connections Part 5: Threaded connections Part 6: TW tank tru
20、ck couplings Part 7: Cam locking couplings Part 8: Symmetrical half coupling (Guillemin system) According to the CEN/CENELEC Internal Regulations, the national standards organizations of the fol-lowing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cypr
21、us, Czech 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
22、 Kingdom. DIN EN 14420-8:2016-06 EN 14420-8:2013+A1:2016 (E) 41 Scope This European Standard specifies dimensions, types of connections, quality of materials, marking re-quirements and testing requirements for hose fittings with symmetrical half couplings (Guillemin sys-tem), with mobile locking rin
23、g, 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 14420-3. Couplings in accord-ance with this document serve as link between hoses and connections to transport liquids, solids (e.g. powders, granules) excep
24、t 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 normatively referenced in this document and are in-dispensable for its application. For dated references, only the edition cited applies. For undated re
25、fer-ences, the latest edition of the referenced document (including any amendments) applies. EN 573-3, Aluminium and aluminium alloys Chemical composition and form of wrought products Part 3: Chemical composition and form of products EN 1706, Aluminium and aluminium alloys Castings Chemical composit
26、ion and mechanical proper-ties EN 1982, Copper and copper alloys Ingots and castings EN 10083-2, Steels for quenching and tempering Part 2: Technical delivery conditions for non alloy steels EN 10088-1, Stainless steels Part 1: List of stainless steels EN 10213 Steel castings for pressure purposes E
27、N 14420-1:2013, Hose fittings with clamp units Part 1: Requirements, types of fixing and connection, designation and testing EN 14420-2, Hose fittings with 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, Ho
28、se fittings with clamp units Part 4: Flange connections EN 14420-5, Hose fittings with clamp units Part 5: Threaded connections EN 22768-1, General tolerances Part 1: Tolerances for linear and angular dimensions without individu-al tolerance indications (ISO 2768-1) EN 22768-2, General tolerances Pa
29、rt 2: Geometrical tolerances for features without individual toler-ance indications (ISO 2768-2) 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) 1)1 bar = 0,1 MPa. DIN EN 14420-8:2016-06 EN 14420-8:2013+A1:
30、2016 (E) 5EN ISO 8330:2008, Rubber and plastics hoses and hose assemblies Vocabulary (ISO 8330:2007) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 8330:2008 and the follow-ing apply. 3.1 DN (nominal size) alphanumeric designation of size for com
31、ponents 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 the
32、 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. DN/OD
33、 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, sha
34、ll resist to the following pressures: a) Maximum working pressure = 16 bar !(see also EN 14420-1:2013, 4.3)“; 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 ga
35、sket (NBR-gasket) is 20 C to +65 C. 5 Components Figure 1 shows a coupling with hose tail (Type SGD) and a plug (Type SGB) as samples. DIN EN 14420-8:2016-06 EN 14420-8:2013+A1:2016 (E) 6 ! Key a hose tail b locking ring c chain d gasket e retainer ring f body of plug Figure 1 Coupling with hose tai
36、l (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 see Annex A. DIN EN 14420-8:2016-06 EN 14420-8:2013+A1:2016 (E) 7 Key a helix right pitch P b medial plan c according to EN
37、 14420-4 *) K is measured in the plan bb NOTE For H and G see Table 1. Figure 2 General dimensions DIN EN 14420-8:2016-06 EN 14420-8:2013+A1:2016 (E) 8 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
38、,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 27,5 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
39、+103 101 114,5 111,5 28 28 20 0,15 19 0,15 85 10 5 100 97 30+123 121 136 133 30 30 21 0,15 20 0,15 103,5 10 6 7 Types of connections Types of connections are shown in Table 2. Dimensions for the main gasket and the retainer ring are given in Table 3. DIN EN 14420-8:2016-06 EN 14420-8:2013+A1:2016 (E
40、) 9 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 clamps units according to 40 EN 14420-3 50 65 80 Other dimensions see Clause 6 100
41、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 thread gasket 32 G 1 40 G 1 50 G 2 65 G 2 80 G 3 Other dimensions see Clause 6 100
42、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 least 10 times 32 the weight of the plug 40 50 65 Other dimensions see Clause 6 80
43、100 DIN EN 14420-8:2016-06 EN 14420-8:2013+A1:2016 (E) 10 Table 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 3
44、1 20/10 40 43 5 4 40 44 20/10 50 54 5 5 50 56 20/10 65 69 6 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 1442
45、0-8 SGD 80 1.4404 EXAMPLE 2 Half-coupling with internal thread nominal size DN 50 made of aluminium alloy (EN AC-42100): Half coupling EN 14420-8 SGF 50 FFG2 EN AC-42100 9 Materials 9.1 General Whatever the kind of manufacturing procedure is, the minimum mechanical characteristics shall be equivalen
46、t to the mechanical characteristics of investment casting (in case of stainless steel) using the materials specified in this document. 9.2 Coupling components The quality of the materials constituting the symmetrical half-couplings (Guillemin system) with mobile locking ring, gaskets, retainer rings
47、 and chains, shall conform to the chemical, mechanical and physical characteristics to provide the service conditions defined in Clause 4. The most commonly used materials are: a) Bronze CuSn5Zn5Pb5 material number CC491K according to EN 1982 b) Cast aluminium alloys EN AC Si7Mg0,3 material number E
48、N AC-42100 according to EN 1706 EN AC SiMg0,6 material number EN AC-42200 according to EN 1706 According to the regulations of the manufacturers, these cast aluminium alloys shall undergo a heat treatment. c) Wrought aluminium alloys DIN EN 14420-8:2016-06 EN 14420-8:2013+A1:2016 (E) 11 EN AW-Al Si1MgMn material number EN AW-6082 according to EN 573-3 d) Stainless steel X2CrNiMo 17-12-2 material number 1.4404 according to EN 10088-1 X5CrNiMo 17-12-2 material number 1.4401 according to EN 10088-1 GX5CrNiMo19-11-2 material number 1.4408 according to EN 10213 9.3 M
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