EN 14420-7:2004+A1:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Schlaucharmaturen mit Klemmfassungen - Teil 7: HebelarmkupplungenRaccords pour flexibles avec demi-coquille - Partie 7: Raccords a camesHose fittings with clamp units - Part 7: Cam locking couplings23.040.60Prirobnice, oglavki in spojni elementiFlanges, couplings and jointsICS:Ta slovenski standard je istoveten z:EN 14420-7:2004+A1:2007SIST EN 14420-7:2005+A1:2007en,fr,de01-september-2007SIST EN 14420-7:2005+A1:2007SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14420-7:2004+A1
January 2007 ICS 23.040.70 Supersedes EN 14420-7:2004English Version
Hose fittings with clamp units - Part 7: Cam locking couplings
Raccords pour flexibles avec demi-coquille - Partie 7: Raccords à cames
Schlaucharmaturen mit Klemmfassungen - Teil 7: Hebelarmkupplungen This European Standard was approved by CEN on 30 September 2004 and includes Amendment 1 approved by CEN 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 standards 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 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, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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B-1050 Brussels © 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14420-7:2004+A1:2007: ESIST EN 14420-7:2005+A1:2007

Gauges for cam-locking couplings.21 A.1 Dimensions and designation.21 A.2 Material.22 Bibliography.23
1 Scope This document details the design, materials and dimensions 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 the pressure range − 0,8 bar to !16" bar working pressure in a working temperature range of − 20 °C up to + 65 °C. WARNING — Line pressure shall be reduced before disconnection. 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 latest edition of the referenced document (including any amendments) applies. EN 1982, Copper and copper alloys — Ingots and castings EN 10083-2, Quenched and tempered steel — Part 2: Technical delivery conditions for unalloyed quality steels (includes amendment A1:1996) 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 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, 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 14420-5, Hose fittings with clamp units — Part 5: Threaded connections EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions, tolerances and designation (ISO 228-1:2000) ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 272, Fasteners — Hexagon products — Widths across flats EN 22768-1, General tolerances — Part 1:Tolerances for linear and angular dimensions without individual tolerance indications EN 22768-2, General tolerances — Part 2:Geometrical tolerances for features without individual tolerance indications 3 Requirements 3.1 Construction The curves of the lever and the adapters as well as the dimensions of the sealing ring shall be harmonized such that twisting of the hose and vibrating during operation shall not lead to leakage. Self-acting uncoupling shall be excluded. SIST EN 14420-7:2005+A1:2007

Key See Table 1 NOTE Chain optional. Figure 1 — Coupler type DF and adapter type DP (dust plug) SIST EN 14420-7:2005+A1:2007

Key See Table 1
NOTE Chain optional. Figure 2 — Coupler type DC and adapter type AF Table 1 — Survey Item No. Number of piecesNomination 1 a 1 with internal thread 1 b 1 with external thread 1 c 1 with welding connection 1 d 1 with hose nipple 1 e 1 body cap for coupler 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 a 8 a 1 with internal thread 8 b 1 with external thread 8 c 1 with welding neck 8 d 1 with hose tail 8 e 1 Adapter plug 9 4 ears a The chain is not part of a complete coupling. SIST EN 14420-7:2005+A1:2007

Figure Type for- detail see Figure Type fordetailsee kind of connection DN thread
DF 7.2.1
AF 7.8.1internal thread according to EN ISO 228-1 flat-sealed with sealing ring according to EN 14420-5
80 100 G ¾ G 1 G 1¼ G 1½ G 2 G 2½ G 3 G 4
BF a 7.2.2
FF a 7.8.2external thread according to EN 10226-1
80 100 R ¾ R 1 R 1¼ R 1½ R 2 R 2½ R 3 R 4
DW 7.2.3
AW 7.8.3welding connection
80 100 —
CC 7.2.4
EC 7.8.4hose tail
80 100 —
DC 7.2.5
DP 7.8.5dust cap, dust plug
80 100 — a Prepared for flat face connections.
Coupler EN 14420-7 – 20 – DF – CW614N Example for an ordering designation of a complete adapter with nominal size DN 20 with internal thread (AF) made of copper-zinc alloy (CW614N):
Adapter EN 14420-7 – 20 – AF – CW614N Example for an ordering designation of the main gasket pos. No 5 with nominal size DN 20 made of nitrile butadiene rubber (NBR):
Main gasket EN 14420-7 – 5 – 20 – NBR 7 Dimensions 7.1 General Details, which are not fixed, shall be chosen by the manufacturer suitably. General tolerances shall be acc
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