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1、BRITISH STANDARD BS EN 14420-6:2004 Incorporating amendment no. 1 Hose fittings with clamp units Part 6: TW tank truck couplings The European Standard EN 14420-6:2004, incorporating amendment A1:2007, has the status of a British Standard ICS 23.040.70 ? Licensed Copy: AUB User, na, Tue Aug 28 02:02:
2、38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 14420-6:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 3 October 2005 BSI 2007 ISBN 0 580 46627 2 National foreword This British Standard is the UK implementation of EN 14420-6:2004, i
3、ncorporating amendment A1:2007. The UK participation in its preparation was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not pur
4、port to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments 1715329 June 2007Implementation of CEN amendment
5、A1:2007 Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 标准分享网 w w w .b z f x w .c o m 免费下载 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14420-6:2004+A1 January 2007 ICS 23.040.70 Supersedes EN 14420-6:2004 English Version Hose fittings with clamp u
6、nits - Part 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 30 September 2004 and includes Amendment 1 approved by CE
7、N on 13 December 2006. 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-date lists and bibliographical references concerning such national standar
8、ds may be obtained on application to the CEN 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 translation under the responsibility of a CEN member into its own language and notified to
9、the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Net
10、herlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitat
11、ion in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14420-6:2004+A1:2007: E Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-6:2004+A1:2007 (E) 2 Contents page Foreword3 1 Scope 4 2 Normative references4 3 Surv
12、ey.4 4 Dimensions, designations 5 4.1 Hose fittings with TW couplings5 4.1.1 General5 4.1.2 Hose tail with female TW coupling.6 4.1.3 Hose tail with male TW coupling7 4.1.4 Protecting ring .8 4.2 Male coupling (type VK)9 4.2.1 General9 4.2.2 Components.10 4.3 Female coupling (type MK).12 4.3.1 Femal
13、e coupling (type MK) DN 50 and DN 80.12 4.3.2 Female coupling (type MK) DN 10013 4.3.3 Designation 14 4.3.4 Components.14 4.4 Dust cap (type MB) 20 4.4.1 General20 4.4.2 Components.22 4.5 Dust plug (type VB)24 4.5.1 General24 4.5.2 Components.25 5 Materials .28 5.1 General28 5.2 Hose tail types MKST
14、 and VKST28 5.3 Protecting rings of hose tail type MKST and VKST .28 5.4 Thread sealing ring of male coupling type VK .28 5.5 Fastening component of female coupling type MK .28 5.6 Sealing ring of female coupling type MK 29 6 Design.29 7 Type approval testing and quality control 29 7.1 General29 7.2
15、 Testing for trueness to gauge size 30 8 Marking.30 9 Fitting of hose couplings30 Annex A (normative) Gauges for TW tank truck couplings31 A.1 General31 A.2 Design; designation, dimensions and materials31 A.2.1 General31 A.2.2 Gauge for sealing ring.32 A.2.3 Gauge for tension rings 36 A.2.4 Gauge fo
16、r curved pieces and plugs.38 A.2.5 Calliper for caps.41 A.3 Marking.43 Bibliography44 Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 标准分享网 w w w .b z f x w .c o m 免费下载 EN 14420-6:2004+A1:2007 (E) 3 Foreword This document (EN 14420-6:2004+A1:2007) has been
17、 prepared by Technical Committee CEN/TC 218 “Rub- ber 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 endorsement, at the latest by July 2007, a
18、nd conflicting national standards shall be withdrawn at the latest by July 2007. This document includes Amendment 1, approved by CEN on 2006-12-13. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. EN 14420-1, Hose fittings with clamp units Part 1:
19、 Requirements, survey, 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 14420-4, Hose fittings with clamp units Part 4: Flange connections EN 14420-5, Hose fitti
20、ngs with clamp 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 couplings (Guillemin system) Accor
21、ding to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard : Austria, Belgium, Bulgaria, Cyprus, Czech Repub- lic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, La
22、tvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-6:2004+A1:2007 (E) 4 1 Scope This document speci
23、fies the design, materials and dimensions for hose fittings with couplings for tank trucks (TW couplings). Couplings for tank trucks in accordance to this document are intended to link hoses with connections for the transport of liquids, solid matters and gases with the exception of liquid gas and s
24、team. They can be em- ployed in a working pressure range of !0,8 bar“ 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 dust couplings are pressure resistant plugs. They do not work
25、as locking device, so, if pipe- lines remain under pressure, a locking device shall be superposed. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refer- ences, only the edition cited applies. For undated references, the lat
26、est edition of the referenced document (including any amendments) applies. EN 586-2, Aluminium and aluminium alloys Forgings Part 2: Mechanical properties and additional prop- erty requirements EN 10083-2, Quenched and tempered steels Part 2: Technical delivery conditions for unalloyed quality steel
27、s EN 10088-1, Stainless steels Part 1: List of stainless steels EN 10213-4, Technical delivery conditions for steel castings for pressure purposes Part 4: Austenitic and austenitic-ferritic steel grades EN 12420, Copper and copper alloy Forgings EN 14420-1, Hose fittings with clamp units Part 1: Req
28、uirements, survey, 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, Hose fittings with clamp units Part 5: Threaded connections EN 22768-1, General tole
29、rances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (ISO 2768:1989) EN 22768-2, General tolerances Part 2: Geometrical tolerances for features without individual tolerance indication (ISO 2768:1989) EN ISO 4042, Fasteners Electroplated coatings (ISO 4
30、042:1999) ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (Hardness between 10 IRHD and 100 IRHD) 3 Survey 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 coupling (Ty
31、pe 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). Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 标准分享网 w w w .b z f x w .c o m 免费下载 EN 14420-
32、6:2004+A1:2007 (E) 5 Usual fitting combination for closing off the filling nozzle or the storage tank: Female dust coupling (Type MB) and male coupling (Type VK). 4 Dimensions, designations 4.1 Hose fittings with TW couplings 4.1.1 General Dimension in millimetres Figure 1 Hose fitting with TW coupl
33、ing for female coupling (type MKS) Figure 2 Hose fitting with TW coupling for male coupling (type VKS) Table 1 Survey Item No Designation Remark 1 Clamping ring with levers according to 4.3.4.2 and 4.3.4.3 2 Sealing ring according to 4.3.4.4 3 Hose tail type MKST according to 4.1.2 4 Clamp unit acco
34、rding to EN 14420-3 5 Hose tail type VKST according to 4.1.3 6 Protecting ring according to 4.1.4 Designation of a complete hose fitting shall be according to EN 14420-1. Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-6:2004+A1:2007 (E) 6 4.1.2 H
35、ose tail with female TW coupling Type MKST Key a Coupling side part of the tail; other dimensions and specifications according to 4.3 b Hose side 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 l1
36、 l2 l3 Connection female TW coupling Hose connection For hose internal diameter min. max. 1 0 + 40 38 68 24 50 50 50 75 26 65 63 98 27 80 80 75 102 35 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 nomi- nal size DN 50
37、on coupling connection side and nominal size DN 40 on hose connecting side, made of cop- per-zinc alloy (CW614N): Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 标准分享网 w w w .b z f x w .c o m 免费下载 EN 14420-6:2004+A1:2007 (E) 7 Hose tail EN 14420-6 MKST 50
38、40 CW614N 4.1.3 Hose tail with male TW coupling Type VKST Key a Coupling side part of the tail; other dimensions and specifications according to 4.2 b Hose 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 millim
39、etres Nominal size DN d1 l4 l5 l6 l7 Connection male TW coupling Hose connec- tion For hose internal diameter Tolerancesmin. 0,5 min. max. 40 38 45 80 2,5 32 50 50 50 58 87 37,5 3 30 65 63 75 0 3 ,0 110,5 80 80 75 90 8 ,0 3 ,0 + 115 48 4 40 100 100 100 113 1 3 ,0 + 134,5 44,5 4 35 Licensed Copy: AUB
40、 User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-6:2004+A1:2007 (E) 8 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 side, ma
41、de of stainless steel (1.4571): Hose tail EN 14420-6 VKST 80 80 1.4571 4.1.4 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 rings do not ha
42、ve to comply with the drawing, only fixed dimensions shall be used. Figure 5 Protecting ring Table 4 Protecting rings Dimensions in millimetres Nominal size DN b d2 d3 Connection male TW coupling Hose connection 0,3 5 ,0 0 + 0,5 40 45,5 50 50 4,5 58,5 90 65 75,5 80 80 6 91 122 100 100 7 114,5 153 Ex
43、ample 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): Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI
44、标准分享网 w w w .b z f x w .c o m 免费下载 EN 14420-6:2004+A1:2007 (E) 9 Protecting ring EN 14420-6 50 40 PA 4.2 Male coupling (type VK) 4.2.1 General Figure 6 Male coupling (type VK) Table 5 Survey Pos. No Number of pieces Designation 1 1 Body 8 1 Thread sealing ring a a Dimensions according to EN 14420-5.
45、 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 be screwed into the m
46、ale coupling (type VK) or one-piece hose fittings in accordance with 4.1 can be used. Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-6:2004+A1:2007 (E) 10 4.2.2 Components 4.2.2.1 Body DN 50 and DN 80 (item No 1) Key a The spatial arrangement do
47、not have to correspond to the drawing b Marking c Straight knurled portion d Thread according to EN 14420-5 e The angle between cams (90) shall be checked with a gauge according to Annex A. Figure 7 Body DN 50 and DN 80 Licensed Copy: AUB User, na, Tue Aug 28 02:02:38 GMT+00:00 2007, Uncontrolled Co
48、py, (c) BSI 标准分享网 w w w .b z f x w .c o m 免费下载 EN 14420-6:2004+A1:2007 (E) 11 Table 6 Dimensions for body DN 50 and DN 80 Dimensions in millimetres b1 d1 d3 d4 d5 d6 d7 d8 e1 e2 Nominal size DN 0,2 0,5 Tolerances 0,4 0,5 0,2 0,6 5,0 0 + 50 6,5 48 67 55,5 4, 0 0 + 60 77 8 60,5 7 2,5 80 8,5 76 100 84,
49、5 0,5 90 110 9 88,5 8 3,5 g1 g2 h1 h2 h3 h4 h5 h6 h7 r Nominal size DN 5,0 0 + 1 0 5,0 0,2 0,5 1 min. Gradient of the curve element 50 4,5 8 39 20 23,5 14,5 3 5 30 3,25 13 80 5 13 48 24 30,5 20 4 5 41 4,25 14 NOTE For DN 50 and DN 80 h3 should be checked with a gauge according to Annex A. 4.2.2.2 Body DN 100 Dimensions in millimetres Key a Marki