1、September 2013 Translation by DIN-Sprachendienst.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).
2、ICS 23.040.70!%(_“2056097www.din.deDDIN EN 14424Hose fittings with screwed ferrules;English version EN 14424:2013,English translation of DIN EN 14424:2013-09Schlaucharmaturen mit Schraubhlsen;Englische Fassung EN 14424:2013,Englische bersetzung von DIN EN 14424:2013-09Raccords pour flexibles avec ba
3、gue visse;Version anglaise EN 14424:2013,Traduction anglaise de DIN EN 14424:2013-09SupersedesDIN EN 14424:2005-02www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 19pages08.13 DIN EN 14424:2013-09 2 A comma is used as the decimal marker.
4、 National foreword This document (EN 14424:2013) has been prepared by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Rohrleitungen und Dampfkesselanlage
5、n (Piping and Boiler Plant Standards Committee), Working Committee NA 082-00-02 AA Schlauchkupplungen. Amendments This standard differs from DIN EN 14424:2005-02 as follows: a) in Clause 1 “Scope” and in Subclause 4.3, the maximum working pressure and the working temperature ranges have been changed
6、; b) Clause 2 “Normative references” has been updated; c) Clause 3 “Terms and definitions” has been extended; d) in Subclause 4.2, a remark for the usage of plastic coatings has been added; e) in Subclause 6.2, the list of materials for hose fittings and union nuts has been revised; f) Subclause 6.3
7、 “Surface treatment” has been added; g) in Subclause 6.4, the requirements for materials of thread gaskets have been revised; h) in Clause 7, the requirements for marking have been revised; i) Clause 8 regarding type testing and quality control has been restructured and amended; j) the Bibliography
8、has been revised; k) the standard has been editorially revised. Previous editions DIN EN 14424: 2005-02 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14424 June 2013 ICS 23.040.70 Supersedes EN 14424:2004English Version Hose fittings with screwed ferrules Raccords pour flexibles avec bague vi
9、sse Schlaucharmaturen mit Schraubhlsen This European Standard was approved by CEN on 8 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-
10、date lists and bibliographical references 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 translati
11、on under the responsibility of a 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, F
12、ormer 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 United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COM
13、IT EUROPEN DE NORMALISATION EUROPISCHES 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 14424:2013: EEN 14424:2013 (E) 2 Contents Page Foreword 3 1 Scope
14、4 2 Normative references 4 3 Terms and definitions .5 4 General requirements 5 4.1 General 5 4.2 Resistance of the fitting materials to the fluid 5 4.3 Maximum working pressures and temperatures 6 5 Dimensions and designation 6 5.1 Dimensions .6 5.2 Ordering designation system 13 6 Materials 14 6.1
15、General . 14 6.2 Hose fittings and union nuts . 14 6.3 Surface treatment . 14 6.4 Thread gaskets 14 7 Marking 15 8 Type testing and quality control . 15 8.1 General . 15 8.2 Type-test 15 8.3 Sampling 16 9 Mounting of hose fittings . 16 Bibliography . 17 DIN EN 14424:2013-09 EN 14424:2013 (E) 3 Forew
16、ord This document (EN 14424:2013) 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 en
17、dorsement, at the latest by December 2013, and conflicting national standards 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
18、identifying any or all such patent rights. This document supersedes EN 14424:2004. In comparison to EN 14424:2004, the following changes have been made: In the Scope and in 4.3, the maximum working pressure and the working temperature ranges have been changed. In Clause 2, the normative references h
19、ave been updated. Clause 3 “Terms and definitions“ has been amended. In 4.2, a remark for the usage of plastic coatings was added. In 6.2, the list of materials for hose fittings and union nuts has been revised. A new subclause 6.3 “Surface treatment“ was added. In 6.4, the requirements for material
20、s of thread gaskets have been revised. In Clause 7, the requirements for marking have been revised. Clause 8 regarding type testing and quality control has been restructured and amended. The Bibliography has been reviewed. The standard has been revised editorially. According to the CEN-CENELEC Inter
21、nal 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 Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ir
22、eland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 14424:2013-09 EN 14424:2013 (E) 4 1 Scope This European Standard specifies the design, materials and dimensions of
23、 hose fittings with screwed ferrules for rubber and thermoplastics hoses for use with flammable and non-flammable liquids or gases, e.g. fuel dispensing hoses, liquid natural gas (LPG) hoses, tank truck hoses and hoses for liquid and gaseous chemicals. The nominal sizes covered are DN 13 to DN 40. U
24、p to DN 25, the maximum working pressure is 25 bar1), and for DN 32 and DN 40 the maximum working pressure is 16 bar. The working temperature range is 20 C to +65 C, for LPG-usage it is 30 C to +70 C up to DN 25, and for LT-(low temperature) usage it is 50 C to +70 C. 2 Normative references The foll
25、owing documents, in whole or in part, are normatively 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 10025-2, Hot
26、 rolled products of structural steels Part 2: Technical delivery conditions for non-alloy structural 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 10216-1, Seaml
27、ess steel tubes for pressure purposes Technical delivery conditions Part 1: Non-alloy steel tubes with specified room temperature properties EN 10226-1, Pipe threads where pressure tight joints are made on the threads Part 1: Taper external threads and parallel internal threads Dimensions, tolerance
28、s and designation EN 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 14420-5, Hose fittings with clamp units Part 5: Threaded connections EN ISO 228-1, Pipe thread
29、s where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation (ISO 228-1) EN ISO 4042, Fasteners Electroplated coatings (ISO 4042) EN ISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary (ISO 8330) ISO 2859-1, Sampling procedures for inspectio
30、n by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection 1) 1 bar = 0,1 MPa. DIN EN 14424:2013-09 EN 14424:2013 (E) 5 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 8330 and the following apply.
31、 3.1 DN (nominal size) alphanumeric designation of size for components of a pipework system, which is used for reference purposes and which 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 diame
32、ter 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 designation system, any relation
33、ship between DN and component dimensions should be given, e.g. DN/OD or DN/ID. SOURCE: EN ISO 6708:1995, 2.1 3.2 thread gasket flat faced gasket for threads according to EN ISO 228-1 4 General requirements 4.1 General Hose fittings shall withstand the mechanical, thermal and chemical loads and shall
34、 be impermeable and resistant to flammable and non-flammable fluids and vapours. Hose fittings shall be designed such that they establish a frictional and positive-locking tight connection on the hose. Hose fittings shall be designed such that when fitted to hoses the hose is destroyed first before
35、being torn out from the fitting, if overstress occurs. Hose side fitting components shall not cause any dangerous notch or shear stresses on the hose. 4.2 Resistance of the fitting materials to the fluid When selecting the type of connection, consideration shall be given to the potential hazard caus
36、ed by the medium and the operating conditions. In individual cases, other concentrations and additions to the medium as well as increase of temperature can reduce the resistance of the metallic materials. In these cases details should be agreed between purchaser and manufacturer. If data are not ava
37、ilable, individual tests are necessary. The fitting components may be surface protected, e.g. nickel-plated, zinc-plated, chrome-plated or polymer coating. Details should be agreed between purchaser and manufacturer. If plastic coatings are provided it shall be ensured that the required electric con
38、ductivity of the hose assembly is maintained. The pairing of fittings from different material groups shall be avoided, if the presence of electrolytes is expected (contact corrosion). DIN EN 14424:2013-09 EN 14424:2013 (E) 6 4.3 Maximum working pressures and temperatures Up to nominal size DN 25, th
39、e maximum working pressure shall be 25 bar, and for nominal sizes DN 32 and DN 40 the maximum working pressure shall be 16 bar. The range of the working temperature shall be 20 C to + 65 C, for LPG-usage it shall be 30 C to +70 C up to DN 25, and for LT-(Low temperature) usage it shall be 50 C to +7
40、0 C. NOTE Permissible pressures and temperatures of hose assemblies are limited by the hoses and gaskets used. 5 Dimensions and designation 5.1 Dimensions Figures 1 to 8 are examples only. The dimensions of hose fittings with screwed ferrules shall be in accordance with Tables 1 to 7. NOTE Details n
41、ot specified in the order are at the manufacturers discretion. Key aferrule bfemale connecting part cunion nut dthread gasket Key aferrule bmale connecting part Figure 1 Ferrule fitting Type G (internal thread) Figure 2 Ferrule fitting Type GA (outside thread) DIN EN 14424:2013-09 EN 14424:2013 (E)
42、7 Table 1 Dimensions for ferrule fittings Type G and GA Nominal size DN Hose internal diameter d d1l l1connecting thread connecting thread min. mm min. mm 13 13 G G A EN ISO 228-1 49 51 G R EN 10226-1/NPT 55 G 1 15 16 G G A EN ISO 228-1 53 G 1 R EN 10226-1/NPT 54 G 1 A EN ISO 228-1 54 19 19 G R EN 1
43、0226-1/NPT 50 54 G 1 G 1 A EN ISO 228-1 52 55 21 21 G 51 G 1 52 25 25 G 1 G 1 A EN ISO 228-1 55 59 G 1 R 1 EN 10226-1/NPT 58 65 32 32 G 1 G 1 A EN ISO 228-1 64 65 40 38 G 1 G 1 A EN ISO 228-1 67 71 Key as = width across flats, hexagonal or octagonal brounded cdimension d4ddimension d3eprofile corner
44、s chamfered finner profile at the discretion of the manufacturer ginspection orifice location at the discretion of the manufacturer Figure 3 Ferrule DIN EN 14424:2013-09 EN 14424:2013 (E) 8 Table 2 Dimensions for ferrule Dimensions in millimetres Nominal size DN d2d3d4l2l3s 0,5 0,5 min. min. min. 13
45、 M 16 1 21 23,5 32 6 27 15 M 19 1,0 24 27 33 30 20 (19) M 22 1,5 29 31,5 36 20 (21) M 26 1,5 29,5 32 34 25 M 28 1,5 35 38 37 41 32 M 36 1,5 40 44,5 43 7 50 40 M 42 1,5 48 52 44 7,5 60 Key arounded bcone shall not be extended over the whole length ccams for assembly provisionally Figure 4 Hose side p
46、art of ferrule fitting DIN EN 14424:2013-09 EN 14424:2013 (E) 9 Table 3 Dimensions for hose side part of ferrule fitting Dimensions in millimetres Nominal size DN d5d6d7l4l5 0,5 5,00+min. max. 13 11 13 M 16 1 27 15 15 13,5 15,5 M 19 1 27 20 (19) 16,5 18,5 M 22 1,5 30 20 (21) 19 21 M 26 1,5 31,5 17 2
47、5 22 24,5 M 28 1,5 35,5 32 29 31,5 M 36 1,5 38 40 34 37,5 M 42 1,5 44 24 Keyas1= width across flats, hexagonal or octagonal Figure 5 Male connecting part DIN EN 14424:2013-09 EN 14424:2013 (E) 10 Table 4 Dimensions for male connecting part Dimensions in millimetres Nominal size DN d1k l6l7s1outside
48、thread according to EN ISO 228-1 min. min. min. min. 13 G A 5 45 12 22 R “ EN 10226-1/NPT 48 15 15 G A 46 13 27 R “ EN 10226-1/NPT 48 15 G 1 A 47 14 36 20 G A 6 49 13 27 R “ EN 10226-1/NPT 51 15 G 1 A 50 14 36 25 G 1 A 56 R 1“ EN 10226-1/NPT 60 18 36 32 G 1 A 59 15 46 40 G 1 A 6,5 69 18 50 Figure 6 Female connecting part DIN EN 14424:2013-09 EN 14424:2013 (E) 11 Table 5 Dim
