1、BSI Standards PublicationBS EN 14420-6:2013Hose fittings with clamp unitsPart 6: TW tank truck couplingsBS EN 14420-6:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14420-6:2013.It supersedes BS EN 14420-6:2004 which is withdrawn.The UK participation in it
2、s 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 purport to include all the necessaryprovisions of a contract. User
3、s are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 72881 5ICS 23.040.70Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of th
4、eStandards Policy and Strategy Committee on 31 July 2013.Amendments issued since publicationDate Text affectedBS EN 14420-6:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14420-6 July 2013 ICS 23.040.70 Supersedes EN 14420-6:2004+A1:2007English Version Hose fittings with clamp units - Part
5、 6: TW tank truck couplings Raccords pour flexibles avec demi-coquille - Partie 6: Raccords TW pour camion-citerne Schlaucharmaturen mit Klemmfassungen - Teil 6: TW Tankwagen-Kupplungen This European Standard was approved by CEN on 15 May 2013. CEN members are bound to comply with the CEN/CENELEC In
6、ternal 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 to a
7、ny 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 official
8、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, Norw
9、ay, 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 in a
10、ny form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14420-6:2013: EBS EN 14420-6:2013EN 14420-6:2013 (E) 2 Contents Page Foreword 3 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Fitting combinations .6 5 Dimensions, designations 6 5.1 Hose fittings wit
11、h TW couplings 6 5.2 Male coupling (type VK) . 10 5.3 Female coupling (type MK) 15 5.4 Dust cap (type MB) . 23 5.5 Dust plug (type VB). 27 6 Materials 31 6.1 General . 31 6.2 Hose tail types MKST and VKST . 31 6.3 Protecting rings of hose tail type MKST and VKST 31 6.4 Thread gasket of male coupling
12、 type VK . 32 6.5 Fastening component of female coupling type MK 32 6.6 Main gasket of female coupling type MK . 32 7 Design 32 8 Fitting of hose couplings . 33 9 Marking 33 10 Type testing and quality control . 33 Annex A (normative) Gauges for TW tank truck couplings . 34 A.1 General . 34 A.2 Desi
13、gn; designation, dimensions and materials . 34 A.3 Marking 49 Bibliography . 50 BS EN 14420-6:2013EN 14420-6:2013 (E) 3 Foreword This document (EN 14420-6:2013) has been prepared by Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies”, the secretariat of which is held by BS
14、I. This European Standard 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 som
15、e of the elements of this 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 14420-6:2004+A1:2007. In comparison to EN 14420-6:2004+A1:2007, the following changes have been made: In
16、 Clause 1, the warning paragraph has been revised. 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). Clause 4 “Survey“ has been renamed “Fitting combinatio
17、ns“. In 5.2.2.3, the body designation of a male coupling (DN 100) has been changed. In 5.4.2.3, the designation of a dust cap has been changed. In 5.5.2.3, the designation of a dust plug has been changed. The requirements on thread gasket materials in 6.4 and main gasket materials in 6.6 have been r
18、evised. In Clause 9, the requirements for marking have been reviewed. Content of Clause 10 “Type testing and quality control“ has been replaced by a reference to EN 14420-1. The standard has been revised editorially. EN 14420, Hose fittings with clamp units consists of the following parts: Part 1: R
19、equirements, 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 BS EN 14420-6:2013EN 14420-6:2013 (E) 4 Part 6: TW tank truck couplings Part 7: Cam locking coupling
20、s Part 8: Symmetrical half couplings (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, Fin
21、land, 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 14420-6:2013EN 14420-6:20
22、13 (E) 5 1 Scope This European Standard specifies the fitting combinations, design, materials and dimensions for hose fittings with couplings for tank trucks (TW couplings). Couplings for tank trucks in accordance with this document are intended to link hoses with connections for the transport of li
23、quids, solid matters and gases with the exception of liquid gas and steam. They can be employed in a working pressure range of 0,8 bar1)up to 16 bar at working temperatures of 20 C up to +65 C. Couplings for tank trucks for other operating conditions are subject to agreement. WARNING Male and female
24、 dust couplings are pressure resistant plugs. They do not fulfil the function of a locking device, which should be installed in any case as long as the hose assembly is under pressure. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document an
25、d 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 586-2, Aluminium and aluminium alloys Forgings Part 2: Mechanical properties and additional prop
26、erty requirements 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 EN 12420, Copper and copper alloy Forgings EN 14420-1:2013, Hose fi
27、ttings 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 14420-5: 2013, Hose fittings with
28、clamp units Part 5: Threaded connections EN 22768-1, General tolerances Part 1: Tolerances for linear 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
29、2768-2) EN ISO 4042, Fasteners Electroplated coatings (ISO 4042) EN ISO 8330:2008, Rubber and plastics hoses and hose assemblies Vocabulary (ISO 8330:2007) 1) 1 bar = 0,1 MPa. BS EN 14420-6:2013EN 14420-6:2013 (E) 6 3 Terms and definitions For the purposes of this document, the terms and definitions
30、 given in EN ISO 8330:2008 and the following apply. 3.1 DN (nominal size) alpha-numeric 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 which is indirectly related to the physical size
31、, 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. Note 2 to entry: In those standards wh
32、ich 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 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
33、ISO 228-1 3.4 protection ring ring which protects the valve from hitting the ground or draggling on the ground 4 Fitting combinations Hose fittings with TW coupling: Female coupling (Type MKS) and male coupling (Type VKS). Usual fitting combination for the filling of the storage tank: Female couplin
34、g (Type MK) and male coupling (Type VK). Usual fitting combination for closing off the outlet end of the TW: Female coupling (Type MK) and male dust coupling (Type VB). Usual fitting combination for closing off the filling nozzle or the storage tank: Female dust coupling (Type MB) and male coupling
35、(Type VK). 5 Dimensions, designations 5.1 Hose fittings with TW couplings 5.1.1 General A hose fitting with TW coupling for female coupling (type MKS) is shown in Figure 1. A hose fitting with TW coupling for male coupling (type VKS) is shown in Figure 2. A parts list for Figure 1 and Figure 2 is gi
36、ven in Table 1. BS EN 14420-6:2013EN 14420-6:2013 (E) 7 Dimensions in millimetres Figure 1 Hose fitting with TW coupling for female coupling (type MKS) Figure 2 Hose fitting with TW coupling for male coupling (type VKS) Table 1 Parts list Item No. Designation Requirements 1 Tension ring with levers
37、according to 5.3.4.2 and 5.3.4.3 2 Main gasket according to 5.3.4.4 3 Hose tail type MKST according to 5.1.2 4 Clamp unit according to EN 14420-3 5 Hose tail type VKST according to 5.1.3 6 Protecting ring according to 5.1.4 Designation of a complete hose fitting shall be according to EN 14420-1. 5.1
38、.2 Hose tail with female TW coupling Dimensions for a hose tail with female TW coupling (type MKST) are shown in Figure 3; values are given in Table 2. BS EN 14420-6:2013EN 14420-6:2013 (E) 8 Type MKST Key aCoupling side part of the tail; other dimensions and specifications according to 5.3. bHose s
39、ide part of the tail; dimensions according to EN 14420-2. Figure 3 Hose tail type MKST Table 2 Hose tail type MKST Dimensions in millimetres Nominal size DN For hose internal diameter l1l2l3Connection female TW coupling Hose connection min. max. 10+50 40 38 68 24 26 50 50 75 80 65 63 98 27 35 80 75
40、102 35 100 100 100 125 27 35,5 Example for an ordering designation of a complete hose tail with female TW coupling (type MKST) with nominal size DN 50 on coupling connection side and nominal size DN 40 on hose connecting side, made of copper-zinc alloy (CW614N): Hose tail EN 14420-6 MKST 50 40 CW614
41、N 5.1.3 Hose tail with male TW coupling Dimensions for a hose tail with male TW coupling (type VKST) are shown in Figure 4; values are given in Table 3. BS EN 14420-6:2013EN 14420-6:2013 (E) 9 Type VKST Key aCoupling side part of the tail; other dimensions and specifications according to 5.2. bHose
42、side part of the tail; dimensions shall be according to EN 14420-2. Figure 4 Hose tail type VKST Table 3 Hose tail type VKST Dimensions in millimetres Nominal size DN For hose internal diameter d1l4l5l6l7Connection male TW coupling Hose connection Tolerances min. 0,5 min. max. 50 40 38 45 03,080 37,
43、5 2,5 32 50 50 58 87 3 30 80 65 63 75 110,5 48 4 40 80 75 90 8,03,0+115 100 100 100 113 13,0+134,5 44,5 4 35 Example for an ordering designation of a complete hose tail with male TW coupling (type VKST) with nominal size DN 80 on coupling connection side and nominal size DN 80 on hose connection sid
44、e, made of stainless steel (1.4571): Hose tail EN 14420-6 VKST 80 80 1.4571 5.1.4 Protecting ring The protecting ring is intended to prevent the external surface of the male couplings from damage, which may be result of hose pipeline handling, e.g. by falling down to earth. The protecting ring does
45、not have to conform to Figure 5; only fixed dimensions in Table 4 shall be used. BS EN 14420-6:2013EN 14420-6:2013 (E) 10 Figure 5 Protecting ring Table 4 Protecting rings Dimensions in millimetres Nominal size DN b d2d3Connection male TW coupling Hose connection 0,3 5,00+ 0,5 50 40 4,5 45,5 90 50 5
46、8,5 80 65 6 75,5 122 80 91 100 100 7 114,5 153 Example for an ordering designation of a protecting ring for a hose tail with nominal size DN 50 of the male coupling connection side and nominal size DN 40 on the hose connection side, made of polyamide (PA): Protecting ring EN 14420-6 50 40 PA 5.2 Mal
47、e coupling (type VK) 5.2.1 General A male coupling (type VK) is shown in Figure 6. A parts list for Figure 6 is given in Table 5. BS EN 14420-6:2013EN 14420-6:2013 (E) 11 Figure 6 Male coupling (type VK) Table 5 Parts list Pos. No. Number of pieces Designation 1 1 Body 8 1 Thread gasketa aDimensions
48、 according to EN 14420-5. Example for an ordering designation of a complete male coupling (type VK) with nominal size DN 80 and maximum working pressure 16 bar, made of copper-zinc alloy (CW614N): Coupling EN 14420-6 VK 80 16 CW614N For connection with hoses, hose tails according to EN 14420-5 can b
49、e screwed into the male coupling (type VK) or one-piece hose fittings in accordance with 5.1 can be used. 5.2.2 Components 5.2.2.1 Body DN 50 and DN 80 (item No. 1) Dimensions for bodies with nominal size DN 50 and DN 80 are shown in Figure 7; values are given in Table 6. BS EN 14420-6:2013EN 14420-6:2013 (E) 12 Key aThe spatial arrangement do not have to correspond to the drawing. bMarking cStraight knurled portion dThread according to EN 14420-5
