SIST EN 14420-6:2013
(Main)Hose fittings with clamp units - Part 6: TW tank truck couplings
Hose fittings with clamp units - Part 6: TW tank truck couplings
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 liquids, solid matters and gases with the exception of liquid gas and steam. They can be employed 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 fulfil the function of a locking device, which should be installed in any case as long as the hose assembly is under pressure.
Schlaucharmaturen mit Klemmfassungen - Teil 6: TW Tankwagen-Kupplungen
Diese Europäische Norm legt die Armaturenkombinationen, Konstruktion, Werkstoffe und Maße für Schlaucharmaturen mit Kupplungen für Tankwagen (TW-Kupplungen) fest.
Kupplungen für Tankwagen nach diesem Dokument dienen der Verbindung von Schläuchen mit Anschlüssen zum Fördern von Flüssigkeiten, Feststoffen und Gasen, ausgenommen Flüssiggas und Dampf. Die Kupplungen können in einem Arbeitsdruckbereich von –0,8 bar ) bis 16 bar bei Arbeitstemperaturen von – 20 °C bis 65 °C verwendet werden. Tankwagen-Kupplungen für andere Betriebsbedingungen nach Vereinbarung.
WARNUNG — Vater- und Mutterteil-Blindkupplungen sind druckbeständige Verschlüsse. Sie über-nehmen nicht die Funktion eines Absperrorgans, das in jedem Fall vorgeschaltet sein sollte, solange die Schlauchleitungen unter Druck stehen.
Raccords pour flexibles avec demi-coquille - Partie 6: Raccords TW pour camion-citerne
La présente Norme européenne spécifie les combinaisons de raccordement, la conception, les matériaux et les dimensions des raccords pour flexibles avec raccordements pour camions-citernes (raccords TW).
Les raccordements pour camions-citernes conformes au présent document sont destinés à relier les tuyaux munis de raccordements pour le transport de liquides, de matières solides et de gaz, à l'exception des gaz liquéfiés et de la vapeur. Ils peuvent être utilisés dans une plage de pression de service de 0,8 bar ) à 16 bar pour des températures de service de 20 °C à 65 °C. Les raccordements pour camions-citernes utilisés dans d'autres conditions de service font l'objet d'un accord.
AVERTISSEMENT Les raccordements anti-poussière mâles et femelles sont des capuchons résistant à la pression. Ils ne remplissent pas la fonction d'un dispositif de verrouillage, qu’il convient d’installer dans tous les cas, tant que l’assemblage flexible est sous pression.
Cevni fitingi z objemkami - 6. del: Spojke za TW cisterne
Ta evropski standard določa kombinacije, načrtovanje, materiale in dimenzije fitingov za cevne fitinge s spojkami za TW cisterne. V skladu s tem dokumentom so spojke za TW cisterne namenjene povezovanju cevi s priključki za prevoz tekočin, trdnih snovi in plinov, razen tekočega plina in pare. Uporabljajo se lahko pri delovnem tlaku od -0,8 bara1) do 16 barov pri delovni temperaturi od -20 °C do +65 °C. Glede spojk za TW cisterne za delovanje pod drugačnimi obratovalnimi razmerami se je treba dogovoriti.
General Information
Relations
Overview
EN 14420-6:2013 - Hose fittings with clamp units - Part 6: TW tank truck couplings - is a European Standard published by CEN that defines the design, materials, dimensions and permitted fitting combinations for TW (tank truck) couplings. It covers male and female couplings, hose tails and protective parts used to link hoses to tank trucks for the transport of liquids, solids and gases (excluding liquid gas and steam). The standard specifies operating limits (working pressure range from –0.8 bar to 16 bar and temperatures from –20 °C to +65 °C) and includes gauges and dimensional checks (Annex A).
Key takeaway: EN 14420-6:2013 standardizes TW tank truck couplings to ensure interchangeability, safety and quality for hose assemblies used on tank vehicles.
Key topics and technical requirements
- Scope & operating limits: Intended for hose-to-tank connections transporting liquids, solids and gases (not liquid gas/steam). Working pressure –0.8 to 16 bar; temperature range –20 °C to +65 °C. Other operating conditions require agreement.
- Components and designations: Defines coupling types and parts such as female coupling (MK), male coupling (VK), hose tails (MKST, VKST), dust cap (MB) and dust plug (VB), plus protecting rings and gaskets.
- Dimensions & DN sizes: Provides dimensional tables and tolerances for common nominal sizes (e.g., DN 50, DN 80, DN 100) and specifies gauges and checks (Annex A) for cam spacing and curved elements.
- Materials & gaskets: Requirements for materials of bodies, hose tails and gaskets (main gasket and thread gasket) are given; materials examples in the standard include copper‑zinc alloys and stainless steels.
- Safety note: Male and female dust couplings are pressure‑resistant plugs but are NOT locking devices. A locking device must be installed whenever the hose assembly is under pressure.
- Testing & quality: Type testing and quality control are managed in conjunction with EN 14420‑1; dimensional gauges and marking requirements are specified.
Applications
- Standardizes hose fittings for tank truck loading/unloading, connecting hoses to storage tanks, filling nozzles and outlet ports.
- Used for manufacture and procurement of hose assemblies, tank truck ports, dust caps/plugs and protecting rings.
- Supports maintenance, inspection and replacement of TW couplings to ensure leak‑free, interchangeable connections in transport fleets and loading terminals.
Who uses this standard
- Tank truck manufacturers and retrofitters
- Hose and coupling manufacturers
- Fleet maintenance and safety engineers
- Procurement and quality assurance teams
- Inspectors, test labs and regulatory bodies
Related standards
- EN 14420-1 to EN 14420-8 (other parts of the Hose fittings with clamp units series)
- EN 14420-1 (requirements, designation and testing)
- EN 14420-2 / EN 14420-3 / EN 14420-5 (hose tails, clamp units, threaded connections)
- EN ISO 8330 (hose vocabulary) and relevant material standards cited in EN 14420-6
Keywords: EN 14420-6:2013, TW tank truck couplings, hose fittings with clamp units, tank truck couplings, DN sizes, VK MK couplings, hose tail, dust cap, gasket, protecting ring.
Frequently Asked Questions
SIST EN 14420-6:2013 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Hose fittings with clamp units - Part 6: TW tank truck couplings". This standard covers: 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 liquids, solid matters and gases with the exception of liquid gas and steam. They can be employed 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 fulfil the function of a locking device, which should be installed in any case as long as the hose assembly is under pressure.
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 liquids, solid matters and gases with the exception of liquid gas and steam. They can be employed 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 fulfil the function of a locking device, which should be installed in any case as long as the hose assembly is under pressure.
SIST EN 14420-6:2013 is classified under the following ICS (International Classification for Standards) categories: 23.040.60 - Flanges, couplings and joints. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 14420-6:2013 has the following relationships with other standards: It is inter standard links to SIST EN 14420-6:2005+A1:2007, SIST EN 14420-6:2005+A1:2007. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN 14420-6:2013 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Cevni fitingi z objemkami - 6. del: Spojke za TW cisterneSchlaucharmaturen mit Klemmfassungen - Teil 6: TW Tankwagen-KupplungenRaccords pour flexibles avec demi-coquille - Partie 6: Raccords TW pour camion-citerneHose fittings with clamp units - Part 6: TW tank truck couplings23.040.60Prirobnice, oglavki in spojni elementiFlanges, couplings and jointsICS:Ta slovenski standard je istoveten z:EN 14420-6:2013SIST EN 14420-6:2013en,fr,de01-september-2013SIST EN 14420-6:2013SLOVENSKI
STANDARDSIST EN 14420-6:2005+A1:20071DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14420-6
July 2013 ICS 23.040.70 Supersedes EN 14420-6:2004+A1:2007English Version
Hose fittings with clamp units - 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 15 May 2013.
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 standards may be obtained on application to the CEN-CENELEC 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 the CEN-CENELEC Management Centre has the same status as the official 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, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 Members. Ref. No. EN 14420-6:2013: ESIST EN 14420-6:2013
Gauges for TW tank truck couplings . 34 A.1 General . 34 A.2 Design; designation, dimensions and materials . 34 A.3 Marking . 49 Bibliography . 50
1) 1 bar = 0,1 MPa. SIST EN 14420-6:2013
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 coupling (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 (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 given in Table 1. SIST EN 14420-6:2013
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
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. 5.1.2 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. SIST EN 14420-6:2013
Key a Coupling side part of the tail; other dimensions and specifications according to 5.3. 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 For hose internal
diameter l1 l2 l3 Connection female TW coupling Hose connection min. max. 10+ 50 40 38 68 24 26 50 50 75 — 80 65 63
98 27 35 80 75 102 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 — CW614N 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. SIST EN 14420-6:2013
Key a Coupling side part of the tail; other dimensions and specifications according to 5.2. 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 millimetres Nominal size
DN For hose internal diameter d1 l4 l5 l6 l7 Connection male TW coupling Hose connection
Tolerances min. ± 0,5 min. max. 50 40 38 45 03,0− 80 37,5 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 side, 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 not have to conform to Figure 5; only fixed dimensions in Table 4 shall be used. SIST EN 14420-6:2013
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 5,00+ ± 0,5 50 40 4,5 45,5 90 50 58,5 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 Male 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. SIST EN 14420-6:2013
Figure 6 — Male coupling (type VK) Table 5 — Parts list Pos. No. Number of pieces Designation 1 1 Body 8 1 Thread gasketa
a Dimensions 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 be 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. SIST EN 14420-6:2013
Key a The spatial arrangement do 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 SIST EN 14420-6:2013
± 0,5
Tolerances ± 0,4 ± 0,5
± 0,2 ± 0,6 0,50+ 50 6,5 48 67 55,5 4,00+ 60 77 8 60,5 7 2,5 80 8,5 76 100 84,5 ± 0,5 90 110 9 88,5 8 3,5
Nominal size
DN g1 g2
5,00+ h1
± 1 h2
05,0− h3
± 0,2 h4
± 0,5 h5 h6
± 1 h7
min. r 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 For DN 50 and DN 80, h3 should be checked with a gauge according to Annex A.
Key a Marking b The spatial arrangement do not have to correspond to the drawing. c Thread according to EN 14420-5 d Gauge dimension under all three curved elements shall be checked with a gauge according to Annex A. e Gradient 14 mm Figure 8 — Body DN 100
5.3 Female coupling (type MK) 5.3.1 Female coupling (type MK) DN 50 and DN 80 A female coupling (type MK) is shown in Figure 9. A parts list for Figure 9 is given in Table 8.
Key For 2, 3, 4, 5, 8 and 9 see Table 8. Figure 9 — Female coupling (type MK) DN 50 and DN 80 NOTE For connection with hoses, hose tails according to EN 14420-5 can be screwed into the female coupling (type MK) or one-piece hose fittings in accordance with 5.1 can be used. SIST EN 14420-6:2013
Gasket fixture 3 1
Tension ring 4 1
Lever 5 1
Main gasket 8 1
Thread gasketa 9 1
Fastening component a Dimensions according to EN 14420-5:2013, 5.5.
Key a Gauge dimension shall be checked with a gauge according to Annex A. b Thread according to EN 14420-5 c Dimensions of lever and lever position are not fixed. The spatial arrangement does not have to correspond to the drawing.
d Gauge dimension at all three claws e Gradient 14 mm Figure 10 — Female coupling (type MK) DN 100 SIST EN 14420-6:2013
Key a Straight knurled portion b Thread according to EN 14420-5 c Magnified Figure 11 — Gasket fixture SIST EN 14420-6:2013
± 0,2 d1 d3 05,0− d4 05,0− d5
± 0,2 d6
± 0,4 d7 d8
± 0,2 d9 03,0− h1 05,0− h2 50 7,5 46 65 69,7 62,5 61 59 60,5 48 20 40,5 80 9,5 74 95 101 93 91 88 88,5 76 24 52
Nominal size DN h3 h4 5,00+ h5
± 0,2 h6 h7 b
max. n1
± 0,2 n2
± 0,2 r1 r2 T
...
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