BS EN 14420-1-2004 Hose fittings with clamp units.pdf

BRITISH STANDARD BS EN 14420-1:2004 Incorporating amendment no.1 Hose fittings with clamp units Part 1: Requirements, survey, designation and testing The European Standard EN 14420-1:2004, incorporating amendment A1:2007, has the status of a British Standard ICS 23.040.70 ? Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 14420-1:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 3 October 2005 © BSI 2007 ISBN 0 580 46617 5 National foreword This British Standard is the UK implementation of EN 14420-1:2004, incorporating amendment A1:2007. The UK National Committee recommends that the informative Annex A, Application of hoses and hose coupling types, should not be considered or used for safety reasons. 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 purport 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 1715529 June 2007Implementation of CEN amendment A1:2007 Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 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 EUROPÉENNE EUROPÄISCHE NORM EN 14420-1:2004+A1 January 2007 ICS 23.040.70 Supersedes EN 14420-1:2004 English Version Hose fittings with clamp units - Part 1: Requirements, survey, designation and testing Raccords pour flexibles avec demi-coquille - Partie 1: Exigences, présentation générale, désignation et essais Schlaucharmaturen mit Klemmfassungen - Teil 1: Anforderungen, Übersicht, Bezeichnung und Prüfung 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. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 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 14420-1:2004+A1:2007: E Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-1:2004+A1:2007 (E) 2 Contents page Foreword3 1 Scope 4 2 Normative references4 3 Terms and definitions .4 4 Requirements.5 4.1 General5 4.2 Resistance of the fitting materials to the medium .5 4.3 Permissible working pressures and temperatures5 5 Survey.6 5.1 General6 5.2 Types of fixing on hose side 7 5.3 Types of connection8 5.3.1 Hose fittings with flange connection.8 5.3.2 Hose fittings with threaded connection 9 5.3.3 Hose fittings with quick coupling connection10 6 Designation 13 7 Type approval testing and quality control 14 8 Mounting of hose fittings14 9 Marking.14 Bibliography16 Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 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 14420-1:2004+A1:2007 (E) 3 Foreword This document (EN 14420-1:2004+A1:2007) has been prepared by Technical Committee CEN/TC 218 “Rubber 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, and 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 consists at the time of publication of the following parts: 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 coupling (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, 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. Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-1:2004+A1:2007 (E) 4 1 Scope This document specifies requirements for hose fittings with clamp units for hoses made of rubber/plastics or thermoplastics preferably for use with flammable and non-flammable products. It contains requirements for hose fittings to ensure that, when used appropriately, the user or third persons are not exposed to hazards from fire, explosions or acid burns, for example from mineral oils or chemicals, and that the environment is protected from pollution and other detriments. The use of non-asbestos materials for gaskets in hose fittings is recommended in this series of standards. For maximum working pressure (WP) and temperature see !4.3“. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10204, Metallic products Types of inspection documents EN 12115, Rubber and thermoplastics hoses and hose assemblies for liquid or gaseous chemicals Specification 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 coupling (Guil-lemin system) 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) 3 Terms and definitions For the purposes of this document, the following term and definition applies. 3.1 DN see EN ISO 6708 Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 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 14420-1:2004+A1:2007 (E) 5 4 Requirements 4.1 General Hose fittings shall withstand the mechanical, thermal and chemical stresses to be expected and shall be impermeable and resistant to flammable and non-flammable water-polluting fluids and their vapours except liquid natural gas and vapour. Hose fittings shall be designed so that they comply with the requirements of this standard when attached correctly and establish a frictional and positive-locking tight connection on the hose. Hose fittings together with the hoses shall be mounted in such manner, when specified in the hose product standard that any electrostatic charging is safely led off. The risk of sparking in explosion-endangered zones shall be excluded when hose assemblies are fastened or removed. This can be avoided by choice of adequate materials, e.g. stainless steel or copper-zinc alloys. Hose fittings shall be designed so that when using hoses (for example according to Annex A) the hose is destroyed first before being torn out from the fitting, if an overstress occurs. Only ductile metallic materials shall be used. Hose side fitting components shall not cause any dangerous notch or shear stresses on the hose. The clamp units shall be widened at the end in order to obtain a flexing zone and shall be approximately 10 % longer than the appropriate connection pieces to minimize shear stress to the hoses. Clamp units shall be attachable without special tools and be reusable. Clamp units shall be replaced in sets. The user and/or the purchaser shall select the type of connection and the material in consideration of the potential hazard caused by the medium and in view of the operating conditions. 4.2 Resistance of the fitting materials to the medium The user and/or the purchaser shall give consideration to the potential hazard caused by the medium and the operating conditions when selecting the type of connection. In individual cases, other concentrations and additions to the medium as well as increase of temperature can reduce the resistance of the metallic materials. In these cases details shall be agreed between purchaser and manufacturer. If data are not available, individual tests are necessary. The fitting components may be surface protected, e.g. nickel-plated, zinc-plated, chrome-plated or polymer coating. Details to be agreed between purchaser and manufacturer. The pairing of fittings from different material groups shall be avoided, if the presence of electrolytes is expected (contact corrosion). 4.3 Permissible working pressures and temperatures All hose fittings shall be capable of operating the working pressure range 0,8 bar up to 25 bar !for EN 14420-2, EN 14420-3, EN 14420-4 and EN 14420-5 and 16 bar for EN 14420-6, EN 14420-7 and EN 14420- 8 and in general for sizes DN 150 and DN 200“. Unless otherwise specified, a working temperature range of 20 °C to + 65 °C shall apply. NOTE Permissible pressures and temperatures of hose assemblies are limited by the hoses and gaskets used. Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-1:2004+A1:2007 (E) 6 5 Survey 5.1 General An example of a complete hose fitting with clamp unit is given in Figure 1. Key 1 Connection side 2 Hose side 3 Connecting part shown here with internal pipe thread 4 Securing collar 5 Hose side part of tail 6 Clamp unit 7 Hose Figure 1 Example of a complete hose fitting with clamp unit Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 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 14420-1:2004+A1:2007 (E) 7 5.2 Types of fixing on hose side Table 1 Survey of types of fixing on hose side Nominal size Type of fixing Form DN a Material groups of fitting parts not in contact with the medium Clamp unit, bolted, according to EN 14420-3 15 20 25 32 40 50 65 80 100 150 K 200 Aluminium alloys, stainless steels, copper-zinc alloys Clamp unit, pinned, according to EN 14420-3 25 32 40 50 65 80 S 100 Aluminium alloys, stainless steels NOTE For details see EN 14420-2 and EN 14420-3. a For inside diameter of hoses see EN 14420-2. Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-1:2004+A1:2007 (E) 8 5.3 Types of connection 5.3.1 Hose fittings with flange connection Table 2 Survey of hose fittings with flange connection Nominal size Connection type a Form DN Connection Material groups of fitting parts in contact with the medium Loose flange 15 Hose fitting according to EN 14420-4 20 25 32 40 50 65 80 100 150 FL 200 Fixed flange 15 Hose fitting according to EN 14420-4 20 25 32 40 50 65 80 100 150 FV 200 Dimensions of flange connection for PN 10 a Non-alloyed steels, stainless steels a Flange type to be agreed between manufacturer and purchaser (other types according to EN 1092-1 may be agreed). Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 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 14420-1:2004+A1:2007 (E) 9 5.3.2 Hose fittings with threaded connection Table 3 Survey of hose fittings with threaded connection Nominal size Connection type a Form DN Connection Material groups of fitting parts in contact with the medium Pipe thread according to EN ISO 228-1with external thread 15 G ½ A Hose fitting according to EN 14420-5 20 G ¾ A Hose tail according to EN 14420-2 25 G 1 A Clamp units according to EN 14420-3 32 G 1 ¼ A G 1 ½ A 40 G 2 A 50 G 2 A G 2 ½ A 65 G 3 A 80 G 3 A GA 100 G 4 A Pipe thread according to EN ISO 228-1 G ½ with union nut and sealing ring 15 G ¾ Hose fitting according to EN 14420-5 G ¾ Hose tail according to EN 14420-2 20 G 1 Clamp units according to EN 14420-3 G 1 25 G 1 ¼ G 1 ¼ 32 G 1 ½ G 1 ½ 40 G 2 G 2 50 G 2 ½ G 2 ½ 65 G 3 80 G 3 G 100 G 4 Aluminium alloys, non-alloyed steels, copper-zinc alloys, copper-tin alloys, stainless steels a Other types of threads are to be agreed between manufacturer and purchaser. Licensed Copy: AUB User, na, Tue Aug 28 02:01:03 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EN 14420-1:2004+A1:2007 (E) 10 5.3.3 Hose fittings with quick coupling connection When separating the quick coupling connections given in Table 4, no relief of the line pressure shall be relieved to atmospheric pressure, before disconnection. Table 4 Survey of hose fittings with quick coupling connection Nominal size Connection type Form DN Connection Material groups of fitting parts in contact with the medium 40 VK 50 50 VK 50 65 VK 80 80 VK 80 TW tank truck couplings Male coupling with hose tail, one-piece, see EN 14420-6 Hose tail according to EN 14420-2 Clamp unit according to EN 14420-3 VKS a 100 VK 100 40 MK 50 50 MK 50 65 MK 80 80 MK 80 TW tank tru