EN 148-2-1999 en Respiratory Protective Devices - Threads for Facepieces - Part 2 Centre Thread Connection《呼吸防护器 面罩连接用螺纹 第2部分 中央螺纹连接》.pdf

1、BRITISH STANDARD Respiratory protective devices - Threads for facepieces - Part 2: Centre thread connection The European Standard EN 1482:1999 has the status of a British standard ICs 13.340.30 387 BS EN 148-2:1999 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW STD-BSI BS EN

2、148-2-ENGL 1999 1b24bb9 0784072 213 m Amd. No. BS EN 148-21999 Date Comments National foreword This British Standard is the English ianguage version of EN 1482: 1999. The UK participation in its preparation was entrusted by Technical Committee PW4, Respiratory protection, to PW4/3, Facepieces, which

3、 has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related intemational and European developments and promulgate interpretation, or proposals for change, and keep the UK interests infornied; them in the U

4、K. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitie “I

5、nternational Standards Correspondence Index“, or by wing the “Find“ facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a con- Users of British Standards are responsible for their correct application. Compliance with a Br

6、itish Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, he EN title page, pages 2 to 6, an inside back cover and a back cover. This British Standard, having been prepared under the direction of the Secto

7、r Committee for Health and Environment, was published under the authority of the Standards Committee and comes into effect on 15 July 1999 O BSI 07-1999 ISBN O 580 32264 6 _ STDDBSI BS EN L48-2-ENGL L771 = lb24bb7 0784093 L5T EUROPEAN STANDARD EN 14&2 NORiME EuROPl?E“E EUROPmcHE NORM February 1999 I

8、Cs 13.340.30 Supersedes EN 14821987 Descriptors: respiratory protective equipment, personal protective equipment, accident prevention, junctions, threaded fittings, screw threads, dimensions English venion Respiratory protective devices - Threads for facepieces - Part 2: Centre thread connection App

9、areils de protection respirafoire - Netages pour pices faciales - Partie 2 Raccord etage cenhl Atmhutzgerk- Gewinde fur Atemanschllusse - Bii 2: Zenmlgewindeanschiui3 This European Standard was approved by CEN on 8 January 1999. CEN members are bound to comply with the CENKENELEC Inted Regulations w

10、hich stipuiate the conditions for giving this European Standard the status of a national standard without any alteration Up-tedae lists and bibliographical references concerning such nationai standards may be obtained on application to the Central Secretariat or to any CEN member. This European Stan

11、dard exists in three official versions (English, French, German). A version in any other language made by tsansation under the responsibility of a CEN member into its own language and notified to the Centsal Secretariat has the same status as the official versions. CEN members are the national stand

12、ards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germanx Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norwax Portugal, Spain, Sweden, Switzerland and United Kingdom. European Committee for Standanbation Comit Europen de Normalisation Europisches Komitee fur Nor

13、mung Central Secretariat: rue de Stassart 36, B-1060 Brussels O 1999 CEN Ail rights of exploitation in any form and by any means resewed worldwide for CEN national Members. Ref. No. EN 148-2:1999 E STD-BSI BS EN LV8-2-ENGL 1777 I Lb24bb7 0784074 09b I Page 2 EN 1482:1999 Foreword This European Stand

14、ard has been prepared by the Technical Committee CENirC 79, Respiratory protective devices, the Secretariat of which is held by DIN. This European Standard supersedes EN 1482:1987. This European Standard shall be given the status of a nationai stanard, either by publication of an identical text or b

15、y endorsement, at the latest by August 1999, and conflicting nationai standards shali be withdrawn at the latest by August 1999. Corrigendum EN 14821987/AC:1992 was incorporated (see heading column 4 in table in clause 6), but with no other technical changes. This hopean Standard has been prepared u

16、nder a mandate given to CEN by the European Commission and the European Free Me Association, and supports essentiai requirements of Directive 89/686/EEC. For reMonship(s) with EU Directive), see informaiive mex ZA, which is an integral part of thisstandard According to the CENKENELEC internai Regula

17、tions, the nationai standards organizations of the following countries are bound to implement this European Finland, France, Gem Greece, Iceland, Ireland, Italy, Luxemboug, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. I Standard: Awtria, Belgium, Czech Republic,

18、Denmark, O BSI 07-1999 STD-BSI BS EN 148-2-ENGL 1777 m 1b24bb7 0781.1075 T22 m Page 3 EN 148-2:1999 1 scope This European Standard is applicable to centre threads for respiratory protective devices. This standard does not apply to iving equipment and to positive pressure demand breathing apparatus.

19、2 Centre thread connector (A) for rn-absorbing cartridges 2.1 Coupling elbow AA Dimensions in millimetres Groove 2.3*! Gasket Tightened nut to Osition of pra,cnt tho eenyal slots optional connecting bolt faiin6 ot Figure la) Figure lb) 2.2 Gasket Dimensions in millimetres Figure 2 *) Specification s

20、ee clause 6 O BSI 07-1999 Page 4 EN 148-2:1999 3 Centre thread connector (B) for equipment connector 3.1 Coupling elbow BA Dimensions in millimetres Tightened nut 1 lT,h.-I Figure3a) to prevent the Figure 3b) central connectin? bolt falling out Figure 3c) t 3.2 Gasket I Dimensions in miiiimetres Fig

21、ure 4 *) Specification see clause 5 O BSI 07-1999 STD-BSI BS EN 1118-2-ENGL 1777 1b211bh9 07811097 3T5 Thread 6/16 Page 5 EN 14&2:1999 Thread limits External thread Internal Thread Pitch Number Thread of height Major Pitch Minor Major Pitch Minor threads diameter diameter diameter diameter diameter

22、diameter per 25,4 max. min. ma. min. may. min. ma. min. max. min. max. min. 7,937 7,805 7,033 6,962 6,129 5,979 7,937 - 7,139 7,033 6,588 6,129 1,411 18 0,904 4 Thread bridge AB (for connector A and B) Dimensions in millimelxes 151 Figure sa) Figure 5b) Figure 5c) 5 Dimensions for thread 5/16 Table

23、1 Dimensions in millimetres *) Specification see clause 6. O BSI 07-1999 STD-BSI BS EN 148-2-ENGL L997 II Lb24hb9 0784078 711 EU Directive 89/686EEC, Annex II 1.2.1 1.3.3 2.8 2.10 3.10.1 Page 6 EN 14&2:1999 Clauses of this standard 2, 3, 4 2, 37 4 2, 3, 4 2, 37 4 2, 3, 4 O BSI 07-1999 BS EN 148-2:19

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