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!%(u“2058204www.din.deDDIN EN 14420-1Hose fittings with clamp units Part 1: Requirements, types of fixing and connection, designation andtesting;English version EN 14420-1:2013,English translation of DIN EN 14420-1:2013-09Schlaucharmaturen mit Klemmfassungen Teil 1: Anforderungen, Arten
3、 der Befestigung und Verbindung, Bezeichnung und Prfung;Englische Fassung EN 14420-1:2013,Englische bersetzung von DIN EN 14420-1:2013-09Raccords pour flexibles avec demi-coquille Partie 1: Exigences, types de fixation et connexion, dsignation et essais;Version anglaise EN 14420-1:2013,Traduction an
4、glaise de DIN EN 14420-1:2013-09SupersedesDIN EN 14420-1:2007-04www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 20 pages 08.13 DIN EN 14420-1:2013-09 2 A comma is used as the decimal marker. National foreword This document (EN 14420-1:2
5、013) 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 Dampfkesselanlagen (Piping and Boiler Plant Standards Committ
6、ee), Working Committee NA 082-00-02 AA Schlauchkupplungen. Amendments This standard differs from DIN EN 14420-1:2007-04 as follows: a) in Clause 1 “Scope”, a warning regarding the operation has been added; b) Clause 2 “Normative references” has been updated; c) Clause 3 “Terms and definitions” has b
7、een revised; d) in Subclause 4.2, requirements for the electrical conductivity of plastic coated hose assemblies have been included; e) in Subclause 4.3, permissible working pressures for aluminium cast fittings according to EN 14420-7 and hose fittings according to EN 14420-8 have been specified; f
8、) Clause 5 “Survey” has been renamed “Types of fixing and connection”; g) Clause 7 “Type testing and quality control” has been completely revised; h) the Bibliography has been revised; i) the standard has been editorially revised. Previous editions DIN 2817-1: 1995-05 DIN EN 14420-1: 2005-05, 2007-0
9、4 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14420-1 July 2013 ICS 23.040.70 Supersedes EN 14420-1:2004+A1:2007English Version Hose fittings with clamp units - Part 1: Requirements, types of fixing and connection, designation and testing Raccords pour flexibles avec demi-coquille - Partie
10、1: Exigences, types de fixation et connexion, dsignation et essais Schlaucharmaturen mit Klemmfassungen - Teil 1: Anforderungen, Arten der Befestigung und Verbindung, Bezeichnung und Prfung This European Standard was approved by CEN on 15 May 2013. CEN members are bound to comply with the CEN/CENELE
11、C 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 application to the CEN-CENELEC Management Centre or
12、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 Management Centre has the same status as the offic
13、ial 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, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
14、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-1000 Brussels 2013 CEN All rights of exploitation
15、in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14420-1:2013: EEN 14420-1:2013 (E) 2 Contents Page Foreword 3 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Requirements .6 4.1 General 6 4.2 Resistance of the fitting materials to the medium .6 4
16、.3 Permissible working pressures and temperatures 7 5 Types of fixing and connection 8 5.1 General 8 5.2 Types of fixing on hose side 9 5.3 Types of connection . 10 6 Ordering designation system 15 7 Type testing and quality control . 16 7.1 General . 16 7.2 Type-test 16 7.3 Sampling 16 8 Mounting o
17、f hose fittings . 16 9 Marking 16 Bibliography . 17 DIN EN 14420-1:2013-09 EN 14420-1:2013 (E) 3 Foreword This document (EN 14420-1:2013) 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 Standa
18、rd shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the 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 th
19、is 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 14420-1:2004+A1:2007. In comparison to EN 14420-1:2004+A1:2007, the following changes have been made: In Clause 1, a warning re
20、garding operation has been added. In Clause 2, the normative references have been revised. Clause 3 “Terms and definitions“ has been revised. In 4.2, requirements for electrical conductivity of plastic coated hose assemblies has been inserted. In 4.3, permissible working pressures for aluminium cast
21、 fittings in EN 14420-7 and hose fittings according to EN 14420-8 have been specified. Clause 5 “Survey“ has been renamed “Types of fixing and connection“. Clause 7 “Type testing and quality control“ has been completely reviewed. The Bibliography has been revised. The standard has been revised edito
22、rially. 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 or pinned Part 4: Flange connections Part 5: Threaded connections Part 6: T
23、W tank truck couplings Part 7: Cam locking couplings Part 8: Symmetrical half coupling (Guillemin system) DIN EN 14420-1:2013-09 EN 14420-1:2013 (E) 4 According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this Europe
24、an Standard: Austria, 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, Slove
25、nia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 14420-1:2013-09 EN 14420-1:2013 (E) 5 1 Scope This European Standard specifies requirements, types of fixing and connection, designation and testing for hose fittings with clamp units for hoses made of rubber/plastics or thermopl
26、astics preferably for use with flammable and non-flammable products. It contains requirements for hose fittings to ensure that, when used appropriately, the user or third persons are not exposed to hazards from fire, explosions or acid burns, for example from mineral oils or chemicals, and that the
27、environment is protected from pollution and other detritus. For maximum working pressure (WP) and temperature see 4.3. WARNING Before decoupling of the quick coupling connections according to Parts 6, 7 and 8, the assembly should be at atmospheric pressure. 2 Normative references The following docum
28、ents, 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 10204, Metallic product
29、s Types of inspection documents 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, Hose fittings with clamp units Part 4: Flange connections EN 14420-5, Hose fittings with clamp
30、units Part 5: Threaded connections EN 14420-6, Hose fittings with clamp units Part 6: TW tank truck couplings EN 14420-7, Hose fittings with clamp units Part 7: Cam locking couplings EN 14420-8, Hose fittings with clamp units Part 8: Symmetrical half coupling (Guillemin system) EN ISO 228-1, Pipe th
31、reads where pressure-tight joints are 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) ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes in
32、dexed by acceptance 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 8330:2008 and the following apply. 3.1 DN (nominal size) alphanumeric designation of size for components of a pipework system, which
33、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 letters DN does not represent a meas
34、urable value and should not be used for calculation purposes except where specified in the relevant standard. DIN EN 14420-1:2013-09 EN 14420-1:2013 (E) 6 Note 2 to entry: In those standards which use the DN designation system, any relationship between DN and component dimensions should be given, e.
35、g. DN/OD or DN/ID. SOURCE: EN ISO 6708:1995, 2.1 3.2 PN alphanumeric designation used for reference purposes related to a combination of mechanical and dimensional characteristics of a component of a hose fitting Note 1 to entry: It comprises the letters PN followed by a dimensionless number. Note 2
36、 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. 4 Requirements 4.1 General Hose fittings shall withstand the mechanical, thermal and chemical stresses and shall be im
37、permeable and resistant to flammable and non-flammable water-polluting fluids and their vapours except liquid natural gas and vapour. Hose fittings shall be designed so that they comply with the requirements of this European Standard when attached correctly and establish a frictional and positive-lo
38、cking tight connection on the hose. Hose fittings together with the hoses shall be mounted in such a manner, when specified in a hose product standard (e.g. EN 12115), that any electrostatic charging is safely led off. Hose assemblies shall be fastened or removed to exclude the risk of sparking in e
39、xplosion-endangered zones. This can be avoided by choice of materials, such as stainless steel or copper-zinc alloys. Hose fittings shall be designed so that when using hoses the hose is destroyed first before being torn out from the fitting, if an overstress occurs. Only ductile metallic materials
40、shall be used for hose fittings and hose clamps. Hose side fitting components shall not cause any dangerous notch or shear stresses on the hose. The clamp units shall be widened at the end in order to obtain a flexing zone and shall be approximately 10 % longer than the connection pieces to minimize
41、 shear stress to the hoses. If plastic coatings are provided it shall be assured by appropriate measures that the required electric conductivity of the hose assembly is maintained. Clamp units shall be attachable without special tools and be re-usable. Clamp units shall be replaced in sets. The type
42、 of connection and the material shall be selected in consideration of the potential hazard caused by the medium and in view of the operating conditions. In this series of European Standards gaskets in hose fittings shall be made of non-asbestos materials. 4.2 Resistance of the fitting materials to t
43、he medium Consideration shall be given to the potential hazard caused by the medium and the operating conditions when selecting the type of connection. DIN EN 14420-1:2013-09 EN 14420-1:2013 (E) 7 In individual cases, other concentrations and additions to the medium as well as increase of temperatur
44、e can reduce the resistance of the metallic materials. In these cases, details shall be agreed between purchaser and manufacturer. The fitting components can be surface protected, e.g. nickel-plated, zinc-plated, chrome-plated or polymer coating. Details shall be agreed between purchaser and manufac
45、turer. If plastic coating is intended, it shall be ensured by measures that the prescribed electrical conductivity of the hose assembly is observed. The pairing of fittings from different material groups shall be avoided, if the presence of electrolytes is expected (contact corrosion). 4.3 Permissib
46、le working pressures and temperatures All hose fittings according to EN 14420-2, EN 14420-3, EN 14420-4 and EN 14420-5 shall be applicable to the working pressure range of 0,8 bar to 25 bar1). All hose fittings according to EN 14420-6 and EN 14420-7 shall be applicable to the working pressure range
47、from -0,8 bar to 16 bar. Exceptions hereof are the aluminium cast fittings in EN 14420-7, whose maximum working pressure is limited to 10 bar. Only hose fittings according to EN 14420-8 having elongation values of more than 4 % are applicable to the working pressure range of 0,8 bar to 16 bar. Unles
48、s otherwise specified, a working temperature range of 20 C to +65 C shall apply. NOTE Permissible pressures and temperatures of hose assemblies are limited by the hoses and gaskets used. 1) 1 bar = 0,1 MPa. DIN EN 14420-1:2013-09 EN 14420-1:2013 (E) 8 5 Types of fixing and connection 5.1 General An example of a complete hose fitting with clamp unit is given in Figure 1. Key 1 connection side 2 hose side 3 connecting part shown here with internal pipe thread 4 securing collar 5 hose side pa
