1、September 2013 Translation by DIN-Sprachendienst.English price group 13No 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)“2058206www.din.deDDIN EN 14420-7Hose fittings with clamp units Part 7: Cam locking couplings;English version EN 14420-7:2013,English translation of DIN EN 14420-7:2013-09Schlaucharmaturen mit Klemmfassungen Teil 7: Hebelarmkupplungen;Englische Fassung EN 14420-7:2013,Englische ber
3、setzung von DIN EN 14420-7:2013-09Raccords pour flexibles avec demi-coquille Partie 7: Raccords cames;Version anglaise EN 14420-7:2013,Traduction anglaise de DIN EN 14420-7:2013-09SupersedesDIN EN 14420-7:2007-04www.beuth.deIn case of doubt, the German-language original shall be considered authorita
4、tive.Document comprises 28 pages 08.13 DIN EN 14420-7:2013-09 2 A comma is used as the decimal marker. National foreword This document (EN 14420-7:2013) has been prepared by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies” (Secretariat: BSI, United Kingdom). The respons
5、ible German body involved in its preparation was the Normenausschuss Rohrleitungen und Dampfkesselanlagen (Piping and Boiler Plant Standards Committee), Working Committee NA 082-00-02 AA Schlauchkupplungen. Amendments This standard differs from DIN EN 14420-7:2007-04 as follows: a) in Clause 1 “Scop
6、e”, the maximum allowable working pressure when using aluminium-cast-materials has been limited to 10 bar; b) in Clause 1 “Scope”, the warning note has been deleted; c) Clause 2 “Normative references” has been updated; d) Clause 3 “Terms and definitions” has been added; e) the term “sealing ring” ha
7、s been replaced by “gasket” (main gasket/thread gasket); f) in Table 3, the values for d2and d7have been corrected; g) in Subclause 8.3, requirements regarding the cam arm have been supplemented, e.g. the prevention against self-acting opening; h) in Subclause 9.2, the list of materials for coupler
8、and adapter bodies has been revised; i) the requirements for main gasket materials in Subclause 9.6 and thread gasket materials in Sub-clause 9.7 have been revised; j) in Clause 10 “Marking”, the requirements for marking have been revised; k) the Bibliography has been revised; l) the standard has be
9、en editorially revised. Previous editions DIN 2828: 1994-02 DIN EN 14420-7: 2005-05, 2007-04 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14420-7 July 2013 ICS 23.040.70 Supersedes EN 14420-7:2004+A1:2007English Version Hose fittings with clamp units - Part 7: Cam locking couplings Raccords
10、pour flexibles avec demi-coquille - Partie 7: Raccords cames Schlaucharmaturen mit Klemmfassungen - Teil 7: Hebelarmkupplungen 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 givin
11、g 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 to any CEN member. This European Standard exists in three offic
12、ial 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 official versions. CEN members are the national standards bodies of
13、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, Slovenia, Spain, S
14、weden, 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 nationa
15、l Members. Ref. No. EN 14420-7:2013: EEN 14420-7:2013 (E) 2 Contents Page Foreword 3 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms and definitions .7 4 Requirements .7 4.1 Construction .7 4.2 Temperatures .7 5 Survey .8 6 Types of connection . 10 7 Designation . 11 8 Dimensions 11 8.1 G
16、eneral . 11 8.2 Coupler types 11 8.3 Cam arm (item No. 2) 14 8.4 Pin (item No. 3) 17 8.5 Ring (item No. 4) . 17 8.6 Main gasket (item No. 5) . 18 8.7 Thread gasket (item No. 6) . 18 8.8 Adapter types 18 9 Materials 21 9.1 General . 21 9.2 Coupler and adapter body . 21 9.3 Cam arm (item No. 2) 22 9.4
17、 Pin (item No. 3) 22 9.5 Ring (item No. 4) . 22 9.6 Main gasket (item No. 5) . 22 9.7 Thread gasket (item No. 6) . 22 10 Marking 23 11 Type testing and quality control . 23 Annex A (normative) Gauges for cam-locking couplings 24 A.1 Dimensions and designation . 24 A.2 Material 25 Bibliography . 26 D
18、IN EN 14420-7:2013-09 EN 14420-7:2013 (E) 3 Foreword This document (EN 14420-7:2013) 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,
19、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 this document may be the subject of patent rights. CEN
20、and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 14420-7:2004+A1:2007. In comparison to EN 14420-7:2004+A1:2007, the following changes have been made: In Clause 1, the maximum allowable working pressure when using aluminium-cast-
21、materials has been limited to 10 bar. In Clause 1, the warning paragraph has been deleted. In Clause 2, the normative references have been updated. A new Clause 3 “Terms and definitions“ has been added. The term “sealing ring“ has been replaced by “gasket“ (main gasket/thread gasket). In Table 3, th
22、e values for d2and d7have been corrected. In 8.3, requirements regarding the cam arm have been amended, e.g. the prevention against self-acting opening. In 9.2, the list of materials for coupler and adapter bodies has been revised. The requirements on main gasket materials in 9.6 and thread gasket m
23、aterials in 9.7 have been revised. In Clause 10, the requirements for marking have been amended. 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 connecti
24、on, designation and testing Part 2: Hose side parts of hose tail Part 3: Clamp units, bolted or pinned Part 4: Flange connections DIN EN 14420-7:2013-09 EN 14420-7:2013 (E) 4 Part 5: Threaded connections Part 6: TW tank truck couplings Part 7: Cam locking couplings Part 8: Symmetrical half coupling
25、(Guillemin system) 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, Finland, Former Yugoslav Republic of Mac
26、edonia, 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. DIN EN 14420-7:2013-09 EN 14420-7:2013 (E) 5 Introduction Cam lockin
27、g couplings are manufactured worldwide according to the American “military specification“ MIL-C-27487. This American standard fixes the coupling side in a limited way, but not the connection side. Other parts like levers, bolts, ring and gaskets are not standardized. DIN EN 14420-7:2013-09 EN 14420-
28、7:2013 (E) 6 1 Scope This European Standard specifies the design, materials, dimensions and marking requirements for cam locking couplings that serve as the link between hoses and connections to transport liquids, solids and gases, except liquid gas and steam. The couplings are capable of operating
29、the pressure range 0,8 bar1)to 16 bar working pressure (for aluminium-cast-materials 0,8 bar to 10 bar) in a working temperature range of 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 indispensable for its a
30、pplication. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 755-2, Aluminium and aluminium alloys Extruded rod/bar, tube and profiles Part 2: Mechanical properties EN 1706, Aluminium an
31、d 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 delivery conditions for non alloy steels EN 10088-1, Stainless steels Part 1: List of stainless steels EN
32、10213, Steel castings for pressure purposes EN 10226-1, Pipe threads where pressure tight joints are made on the threads Part 1: Taper external threads and parallel internal threads Dimensions, tolerances and designation EN 12420, Copper and copper alloys Forgings EN 14420-1:2013, Hose fittings with
33、 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 14420-5, Hose fittings with clamp units Part 5: Threaded connections EN 22768-1, General tolerances Part 1: Tolerances for lin
34、ear 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 are not made on the threads Part 1:
35、 Dimensions, tolerances and designation (ISO 228-1) EN ISO 8330:2008, Rubber and plastics hoses and hose assemblies Vocabulary (ISO 8330:2007) ISO 272, Fasteners Hexagon products Widths across flats 1) 1 bar = 0,1 MPa. DIN EN 14420-7:2013-09 EN 14420-7:2013 (E) 7 3 Terms and definitions For the purp
36、oses 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 is used for reference purposes. It comprises the letters DN followed by a dimensionless whole number w
37、hich 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 measurable value and should not be used for calculation purposes except where specified in the relevant s
38、tandard. 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 PN alphanumeric designation used for reference purposes related to a combination of mechanica
39、l 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 to entry: The number following the letters PN does not represent a measurable value and should not be used for calculation purposes except where
40、specified in the relevant standard. 3.3 main gasket interface gasket between the male and female part of a coupling 3.4 thread gasket flat faced gasket for threads according to EN ISO 228-1 4 Requirements 4.1 Construction The curves of the lever and the adapters as well as the dimensions of the main
41、 gaskets shall be harmonised such that twisting of the hose and vibrating during operation shall not lead to leakage. Cam arms shall be manually operable. Cam arms shall be suitable to operate without using tools. For gauges for cam-locking couplings according to this European Standard see Annex A.
42、NOTE If the requirements of this European Standard are met, compatibility between couplers and adapters from different manufacturers is assured. Apart from gaskets, the interchangeability between spare parts from different manufacturers cannot be assured. 4.2 Temperatures Range of working temperatur
43、es of couplings equipped with nitrile butadiene rubber gasket (NBR-gasket): 20 C to +65 C. DIN EN 14420-7:2013-09 EN 14420-7:2013 (E) 8 5 Survey Figure 1 and Figure 2 show examples for cam-locking couplings. A parts list is given in Table 1. NOTE Chain optional. Figure 1 Coupler type DF and adapter
44、type DP (dust plug) NOTE Chain optional. Figure 2 Coupler type DC and adapter type AF DIN EN 14420-7:2013-09 EN 14420-7:2013 (E) 9 Table 1 Parts list Item No. Number of pieces Nomination 1 a 1 body with internal thread for coupler 1 b 1 with external thread 1 c 1 with welding connection 1 d 1 with h
45、ose nipple 1 e 1 cap 2 2 cam arms 3 2 pin 4 2 ring 5 1 main gasket 6 1 thread gasket for internal thread (see EN 14420-5) 7 1 At the discretion of the manufacturer a8 a 1 Adapter with internal thread 8 b 1 with external thread 8 c 1 with welding neck 8 d 1 with hose tail 8 e 1 plug 9 4 ears aThe cha
46、in is not part of a complete coupling. DIN EN 14420-7:2013-09 EN 14420-7:2013 (E) 10 6 Types of connection The different types of connection of cam lock couplings are specified in Table 2. Table 2 Types of connection Coupler Adapter Figure Type For detail see Figure Type For detail see Kind of conne
47、ction DN Thread DF 8.2.1 AF 8.8.1 internal thread according to EN ISO 228-1 flat-faced with thread gasket according to EN 14420-5 20 25 32 40 50 65 80 100 G G 1 G 1 G 1 G 2 G 2 G 3 G 4 BF a8.2.2 FF a8.8.2 external thread according to EN 10226-1 20 25 32 40 50 65 80 100 R R 1 R 1 R 1 R 2 R 2 R 3 R 4
48、DW 8.2.3 AW 8.8.3 welding connection 20 25 32 40 50 65 80 100 CC 8.2.4 EC 8.8.4 hose tail 20 25 32 40 50 65 80 100 DC 8.2.5 DP 8.8.5 dust cap, dust plug 20 25 32 40 50 65 80 100 aPrepared for flat face connections. DIN EN 14420-7:2013-09 EN 14420-7:2013 (E) 11 7 Designation Example for an ordering designation of a complete coupler with nominal size DN 20 with internal thread (DF) made of copper-zinc alloy (CW614N): Coupler EN 14420-7 20 DF
