1、BRITISH STANDARD BS EN 144-3:2003 Incorporating Corrigendum No. 1 Respiratory protective devices Gas cylinder valves Part 3: Outlet connections for diving gases Nitrox and oxygen The European Standard EN 144-3:2003 has the status of a British Standard ICS 13.340.30 BS EN 144-3:2003 This British Stan
2、dard was published under the authority of the Standards Policy and Strategy Committee on 5 March 2003 BSI 29 February 2004 ISBN 0 580 41367 5 National foreword This British Standard is the official English language version of EN 144-3:2003, including Corrigendum December 2003. The UK participation i
3、n its preparation was entrusted by Technical Committee PH/4, Respiratory protection, to Subcommittee PH/4/7, Underwater breathing apparatus, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The Bri
4、tish Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards On
5、line. 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 does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the respons
6、ible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover
7、, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 14997 Corrigendum No. 1 29 February 2004 Figure 1f amended EUROPEAN STAN
8、DARD NORME EUROPENNE EUROPISCHE NORM EN 144-3 February 2003 ICS 13.340.30 Incorporating corrigendum December 2003 English version Respiratory protective devices - Gas cylinder valves - Part 3: Outlet connections for diving gases Nitrox and oxygen Appareils de protection respiratoire - Robinets de bo
9、uteille gaz - Partie 3: Raccords de sortie pour gaz de plonge Nitrox et oxygne Atemschutzgerte - Gasflaschenventile - Teil 3: Gewindeverbindungen am Ausgangsstutzen fr die Tauchgase Nitrox und Sauerstoff This European Standard was approved by CEN on 21 November 2002. CEN members are bound to comply
10、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 Management Cen
11、tre 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 Management Centre has the same status as the official v
12、ersions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTE
13、E FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 144-3:2003 EEN 144-3:2003 (E) 2 Content
14、s page Foreword3 Introduction .4 1 Scope5 2 Normative references5 3 Thread connection for valve outlet6 3.1 Thread connection for pressures up to 250 bar (nominal pressure 200 bar)6 3.2 Thread connection for pressures between 250 bar and 350 bar (nominal pressure 300 bar).7 4 Marking.7 Annex ZA (inf
15、ormative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives. .8 EN 144-3:2003 (E) 3 Foreword This document (EN 144-3:2003) has been prepared by Technical Committee CEN /TC 79 “Respiratory protective devices“, the secretariat of which is held by
16、DIN. 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 August 2003, and conflicting national standards shall be withdrawn at the latest by August 2003. This European Standard has been prepared under
17、 a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this standard. According to the CEN/CENELEC Internal Regul
18、ations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spa
19、in, Sweden, Switzerland and the United Kingdom. EN 144-3:2003 (E) 4 Introduction In recognition of the very high number of valves using threads of existing national design and the high costs that would be caused by the unnecessary early replacement of these, it is acknowledged that a 5 year transiti
20、onal period will be required to phase in valves using the thread described in this standard. During the ensuing period valves may be supplied with threads to the existing national design or to the standard described herein. EN 144-3:2003 (E) 5 1 Scope This European Standard is applicable to a thread
21、 connection used for the connection between a gas cylinder valve and a pressure reducer for respiratory equipment for diving containing breathable nitrox gas with an oxygen content greater than 22 % or oxygen. This European Standard specifies the dimensions and tolerances for connections which are u
22、sed for respiratory equipment. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and, the publications are listed hereafter. For dated references, su
23、bsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 144-1, Respiratory protective devices Ga
24、s cylinder valves Part 1: Thread connections for insert connector EN 144-3:2003 (E) 6 3 Thread connection for valve outlet 3.1 Thread connection for pressures up to 250 bar (nominal pressure 200 bar) Figure 1 shows the thread connection and its dimensions to be used for cylinders with a maximum fill
25、ing pressure of 250 bar. Dimensions in millimetres Tolerance: 0,1 mm unless specified Figure 1a) Valve outlet connection Figure 1b) Filling connector Figure 1c) Handwheel Figure 1d) Connector Figure 1e) O-ring Figure 1f) Valve outlet Figure 1 Thread connection for pressures up to 250 bar EN 144-3:20
26、03 (E) 7 3.2 Thread connection for pressures between 250 bar and 350 bar (nominal pressure 300 bar) Figure 2 shows the thread connection and its dimensions to be used for cylinders with a maximum filling pressure of 350 bar. Dimensions in millimetres Tolerance: 0,1 mm unless specified Figure 2a) Val
27、ve outlet connection Figure 2b) Filling connector Figure 2c) Handwheel Figure 2d) Connector Figure 2e) O-ring Figure 2f) Valve outlet Figure 2 Thread connection for pressures between 250 bar and 350 bar 4 Marking In addition to the marking required in EN 144-1 the valve outlet connection shall be pe
28、rmanently marked with “200“ for nominal pressure 200 bar connections and with ”300” for nominal pressure 300 bar connections. EN 144-3:2003 (E) 8 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives. This European Standard ha
29、s been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports essential requirements of EU Directive 89/686/EEC, clause 3.10.1. WARNING: Other requirements and other EU Directives may be applicable to the products falling within the scop
30、e of this standard. Compliance with this standard provides one means of conforming with the specific essential requirements of the Directive concerned and associated EFTA regulations. blankBS EN 144-3:2003 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independ
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