1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 14424:2013Hose fittings with screwedferrulesBS EN 14424:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14424:2013. Itsupersedes
2、BS EN 14424:2004 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/66, Rubber and plastics tubing, hoses and hoseassemblies.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purp
3、ort to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 72873 0ICS 23.040.70Compliance with a British Standard cannot confer immunity fromlegal obligations
4、.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2013.Amendments issued since publicationDate Text affectedBS EN 14424:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14424 June 2013 ICS 23.040.70 Supersedes EN 14424:2004Engli
5、sh Version Hose fittings with screwed ferrules Raccords pour flexibles avec bague visse 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 thi
6、s 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official v
7、ersions (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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austr
8、ia, Belgium, Bulgaria, Croatia, Cyprus, 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
9、, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT 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 Mem
10、bers. Ref. No. EN 14424:2013: EBS EN 14424:2013EN 14424:2013 (E) 2 Contents Page Foreword 3 1 Scope 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 D
11、imensions and designation 6 5.1 Dimensions .6 5.2 Ordering designation system 13 6 Materials 14 6.1 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
12、16 9 Mounting of hose fittings . 16 Bibliography . 17 BS EN 14424:2013EN 14424:2013 (E) 3 Foreword 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
13、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 standards shall be withdrawn at the latest by December 2013. Attention is drawn to the possibility that some of the elements of this docu
14、ment 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 14424:2004. In comparison to EN 14424:2004, the following changes have been made: In the Scope and in 4.3, the maximum working pressur
15、e and the working temperature ranges have been changed. In Clause 2, the normative references have 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 re
16、vised. A new subclause 6.3 “Surface treatment“ was added. In 6.4, the requirements for materials 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 h
17、as been reviewed. The standard 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
18、, 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 Kingdom. BS EN 14424:2013EN 14424:2
19、013 (E) 4 1 Scope This European Standard specifies the design, materials and dimensions of 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 a
20、nd hoses for liquid and gaseous chemicals. The nominal sizes covered are DN 13 to DN 40. Up 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 2
21、5, and for LT-(low temperature) usage it is 50 C to +70 C. 2 Normative references The following 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 lat
22、est 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 structural steels EN 10087, Free-cutting steels Technical delivery conditions for semi-finished products, hot-rolled bar
23、s and rods EN 10088-1, Stainless steels Part 1: List of stainless steels EN 10216-1, Seamless 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
24、threads Part 1: Taper external threads and parallel internal threads Dimensions, tolerances 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 1442
25、0-5, Hose fittings with clamp units Part 5: Threaded connections 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 4042, Fasteners Electroplated coatings (ISO 4042) EN ISO 8330, Rubber and plastics hos
26、es and hose assemblies Vocabulary (ISO 8330) ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection 1) 1 bar = 0,1 MPa. BS EN 14424:2013EN 14424:2013 (E) 5 3 Terms and definitions For the purposes of t
27、his document, the terms and definitions given in EN ISO 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 and which comprises the letters DN followed by a dimensionless whole number which is
28、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 letters DN does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard.
29、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 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 Gener
30、al Hose fittings shall withstand the mechanical, thermal and chemical loads and shall 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
31、 shall be designed such that when fitted to hoses the hose is destroyed first before 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 select
32、ing the type of connection, consideration shall be given to the potential hazard caused 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 c
33、ases details should be agreed between purchaser and manufacturer. If data are not available, 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
34、. If plastic coatings are provided it shall be ensured that the required electric conductivity 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). BS EN 14424:2013EN 14424:2013 (
35、E) 6 4.3 Maximum working pressures and temperatures Up to nominal size DN 25, the 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
36、 to +70 C up to DN 25, and for LT-(Low temperature) usage it shall be 50 C to +70 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
37、 with screwed ferrules shall be in accordance with Tables 1 to 7. NOTE Details not 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
38、Ferrule fitting Type GA (outside thread) BS EN 14424:2013EN 14424:2013 (E) 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 E
39、N 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 10226-1/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
40、, hexagonal or octagonal brounded cdimension d4ddimension d3eprofile corners chamfered finner profile at the discretion of the manufacturer ginspection orifice location at the discretion of the manufacturer Figure 3 Ferrule BS EN 14424:2013EN 14424:2013 (E) 8 Table 2 Dimensions for ferrule Dimension
41、s in millimetres Nominal size DN d2d3d4l2l3s 0,5 0,5 min. min. min. 13 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
42、the whole length ccams for assembly provisionally Figure 4 Hose side part of ferrule fitting BS EN 14424:2013EN 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
43、27 20 (19) 16,5 18,5 M 22 1,5 30 20 (21) 19 21 M 26 1,5 31,5 17 25 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 BS EN 14424:2013EN 14424:2013 (E) 10 Table 4 Dimensions for male connecting part
44、Dimensions in millimetres Nominal size DN d1k l6l7s1outside 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/NP
45、T 60 18 36 32 G 1 A 59 15 46 40 G 1 A 6,5 69 18 50 Figure 6 Female connecting part BS EN 14424:2013EN 14424:2013 (E) 11 Table 5 Dimensions for female connecting part Dimensions in millimetres Nominal size DN For union nut with inner thread according to EN ISO 228-1 bab1ad8ad9al8 0,2 5,12,0+02,005,0m
46、in. 13 G 3 6,5 18,5 15,5 34,5 G 24 22 15 G 18,5 15,5 G 24 22 G 1 30 28 20 (19) G 24 22 35,5 G 1 30 28 20 (21) G 24 22 G 1 30 28 25 G 1 42 G 1 7 38,8 35,9 42,5 32 G 1 45 G 1 4,5 8,5 44,7 41,5 46,5 38 G 1 52,5 aDimensions shall be in accordance with EN 14420-5. BS EN 14424:2013EN 14424:2013 (E) 12 Dim
47、ensions in millimetres Type A, for thread G to G 1 Type B, for thread G 1 Key ahexagonal or octagonal bfour cornered, hexagonal or octagonal (at the discretion of the manufacturer) Figure 7 Union nuts, Type A and B Table 6 Dimensions for union nuts Type A and B Dimensions in millimetres Internal thr
48、ead according to EN ISO 228-1 d10ad11ad12ad13ad14al9al10al11al12 aS2 a Tolerance 2,00+2,00+ 0,5 0,3 5,00+5,00+02+min. G 23,5 21,2 0,1 16,2 18,9 3 5,5 3,0 16 24 G 28 26,7 0,2 22,1 24,5 30 G 1 34 33,5 28,1 30,7 18 36 G 1 44 42,5 36,1 39,3 3,5 3,5 19 46 G 1 53 48,5 0,3 42,2 45,2 54 4 8 5 25 55 aDimensi
49、ons shall be in accordance with EN 14420-5. BS EN 14424:2013EN 14424:2013 (E) 13 Figure 8 Thread gasket Table 7 Dimensions for thread gasket Dimensions in millimetres Thread according to EN ISO 228-1 d15d16asa 1 Tolerance Tolerance G 13 20 2,05,0+1,5 5,02,0+G 19 26 G 1 24 33 2,0 0,2 G 1 33 42 G 1 39 48 aDimensions shall
