EN 14420-6:2004

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 14420-6:2004SIST EN 14420-6:2005en01-marec-2005SIST EN 14420-6:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14420-6November 2004ICS 23.040.70English versionHose fittings with clamp units - Part 6: TW tank truck couplingsRaccords pour flexibles avec demi-coquille - Partie 6:Raccords TW pour camion citerneSchlaucharmaturen mit Klemmfassungen - Teil 6: TWTankwagen-KupplungenThis European Standard was approved by CEN on 30 September 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14420-6:2004: ESIST EN 14420-6:2005

Gauges for TW tank truck couplings.29 A.1 General.29 A.2 Design; designation, dimensions and materials.29 A.2.1 General.29 A.2.2 Gauge for sealing ring.30 A.2.3 Gauge for tension rings.34 A.2.4 Gauge for curved pieces and plugs.37 A.2.5 Calliper for caps.40 A.3 Marking.42 Bibliography.43
EN 14420-1, Hose fittings with clamp units — Part 1: 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 fittings 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)
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom SIST EN 14420-6:2005

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 — 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
according 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. SIST EN 14420-6:2005

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 l2 l3 Connection female TW coupling Hose connection For hose internal diametermin. max. 10+
68 24
75 — 26
98 27
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 on coupling connection side and nominal size DN 40 on hose connecting side, made of cop-per-zinc alloy (CW614N): Hose tail EN 14420-6 — MKST — 50 — 40 — CW614N SIST EN 14420-6:2005

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 millimetres
Nominal size DN d1 l4 l5 l6 l7 Connection male TW coupling Hose connec-tion For hoseinternaldiameter Tolerancesmin. ± 0,5 min. max.
45 80 2,5 32
58 87 37,5 3 30
75 03,0− 110,5
90 8,03,0+− 115 48 4 40 100 100 100 113 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 SIST EN 14420-6:2005

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
40 45,5
50 4,5 58,5
65 75,5
80 6 91 122 100 100 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 SIST EN 14420-6:2005

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.
Example for an ordering designation of a complete male coupling (type VK) with nominal size DN 80 and maximum working pressure 25, made of copper-zinc alloy (CW614N): Coupling EN 14420-6 — VK 80 — 25 — 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 4.1 can be used. SIST EN 14420-6:2005

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 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 5,00+ 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
DN
5,00+± 1 05,0− ± 0,2 ± 0,5
± 1 min.
Gradient of thecurve element50
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 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 4.2.2.3 Body designation Example for an ordering designation of a body item No 1 with nominal size DN 80 for a maximum working pressure of 25 bar, made of copper-zinc alloy (CW614N): Body EN 14420-6 — 80 —25 —CW614N SIST EN 14420-6:2005

4.3 Female coupling (type MK) 4.3.1 Female coupling (type MK) DN 50 and DN 80
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 4.1 can be used. Table 8 — Survey Item No Number of piecesDesignation 2 1
Seal fixture 3 1
Tension ring 4 1
Lever 5 1
Sealing ring 8 1
Thread sealing ring a 9 1
Fastening component a Dimensions according to EN 14420-5:2004, 4.5. SIST EN 14420-6:2005

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 do 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 4.3.3 Designation Example for an ordering designation of a complete female coupling (type MK) with nominal size DN 80, for a maximum working pressure of 25 bar, made of copper-zinc alloy (CW614N): Coupling EN 14420-6 — MK 80 — 25 —CW614N SIST EN 14420-6:2005

Key a Straight knurled portion b Thread according to EN 14420-5 c Magnified Figure 11 — Seal fixture SIST EN 14420-6:2005
...