1、BRITISH STANDARD BS 341-3:2002 Transportable gas container valves Part 3: Valve outlet connections ICS 23.060.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS 341-3:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and St
2、rategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 17 May 2002 BSI 17 May 2002 First published as BS 341-1 October 1962 Second edition September 1991 First published as BS 341-3 May 2002 The following BSI references relate to work on this British St
3、andard: Committee reference PVE/3/1 Draft for comment 00/716618 DC ISBN 0 580 39493 X Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee PVE/3, Gas containers, to Subcommittee PVE/3/1, Valve fittings for gas cylinders, upon
4、which the following bodies were represented: British Compressed Gases Association Department of Health Medical Devices Agency Health and Safety Executive Home Office L P Gas Association Ministry of Defence Personal Safety Manufacturers Association Scuba Industries Trade Association Ltd. Amendments i
5、ssued since publication Amd. No. Date CommentsBS 341-3:2002 BSI 17 May 2002 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 Normative references 1 3 Valve outlet connections for pressures up to 250 bar 2 4 Valve outlet connections for pressures from 250 bar up to
6、 300 bar 2 5T o l e r a n c e s 2 Annex A (informative) American (CGA) valve outlet connections used in the UK 25 Bibliography 26 Figure 1 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection number 1 9 Figure 2 Dimensions and tolerances of outlet connections
7、 for pressures up to 250 bar Outlet connections 2 and 4 10 Figure 3 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection 3 11 Figure 4 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection 6 12 Figure 5 Dimensions and t
8、olerances of outlet connections for pressures up to 250 bar Outlet connection 7 13 Figure 6 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection 8 14 Figure 7 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection 10 15
9、Figure 8 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection 11 16 Figure 9 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection 13 17 Figure 10 Dimensions and tolerances of outlet connections for pressures up to 250
10、bar Outlet connection 14 18 Figure 11 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection 15 19 Figure 12 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection 16 20 Figure 13 Dimensions and tolerances of outlet connec
11、tions for pressures up to 250 bar Outlet connection 17 21 Figure 14 Dimensions and tolerances of outlet connections for pressures up to 250 bar Outlet connection 18 22 Figure 15 Dimensions and tolerances of outlet connections for pressures from 250 bar up to 300 bar 23 Table 1 Outlet connections for
12、 use with gases up to pressures of 250 bar 3 Table 2 Outlet connections for use with gases for pressures from 250 bar up to 300 bar 8BS 341-3:2002 ii BSI 17 May 2002 Foreword This part of BS 341 has been prepared by Subcommittee PVE/3/1 on behalf of Technical Committee PVE/3 and along with BS EN 849
13、, BS EN ISO 13340 and BS EN ISO 14246 partially supersedes BS 341-1:1991, which is declared obsolescent. The 1991 version of BS 341-1 detailed all aspects of the design, manufacture and testing of valves fitted to containers used for the conveyance of permanent, liquefiable and dissolved gases, exce
14、pt those for liquefied petroleum gas (LPG) applications. The 1991 version has been progressively superseded by a series of standards originating in the European Committee for Standardization (CEN) (see Bibliography). BS 341 Transportable gas container valves is published in four parts: Part 1: Speci
15、fication for industrial valves for working pressures up to and including 300 bar (obsolescent); Part 2: Valves with taper stems for use with breathing apparatus (obsolescent); Part 3: Valve outlet connections; Part 4: Pressure relief devices. This publication does not purport to include all the nece
16、ssary 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. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 27 and a back cov
17、er. The BSI copyright notice displayed in this document indicates when the document was last issued.BS 341-3:2002 BSI 17 May 2002 1 1 Scope This part of BS 341 specifies requirements for the selection and dimensions of outlet connections, for valves used with transportable gas cylinders manufactured
18、 for the conveyance and storage of permanent, liquefied and dissolved gases for industrial applications. This part of BS 341 does not include requirements for the selection of valve outlets for liquefied petroleum gas (LPG), medical applications conforming to BS EN 850 or for ultra-high-purity gases
19、 used in the micro-electronics industry. This part of BS 341 applies to outlets for valves limited to a charging pressure of 300 bar 1)(developed pressures for particular gases might exceed this pressure). A list of alternative outlets for the less commonly used gases imported into the United Kingdo
20、m is given in Annex A. 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. BS
21、84:1956, Specification for parallel screw threads of Whitworth form. BS 2779:1986, Specification for pipe threads for tubes and fittings where pressure-tight joints are not made on the threads (metric dimensions). BS 3643-1:1981, Specification for ISO metric screw threads Part 1: Principles and basi
22、c data. BS 3643-2:1981, ISO metric screw threads Part 2: Specification for selected limits of size. BS 4500-4:1985, ISO limits and fits Part 4: Specification for system of cone (taper) fits for cones from C=1:3 to 1:500, lengths from 6 mm to 630 mm and diameters up to 500 mm (ISO 5166:1982). BS 4500
23、-5:1988, ISO limits and fits Part 5: Specification for system of cone tolerances for conical work pieces from C=1:3 to 1:500 and lengths from 6 mm to 630 mm (ISO 1947:1973). BS EN 20286-1:1993, ISO system of limits and fits Part 1: Bases of tolerances, deviations and fits (ISO 286-1:1988). BS EN 202
24、86-2:1993, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts (ISO 286-2:1988). BS EN 22768-1:1993, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tolerance indications (ISO 2768-1:1989). BS
25、EN ISO 7083:1995, Technical drawings Symbols for geometrical tolerancing Proportions and dimensions (BS 308-3.6:1995). ISO 5145, Cylinder valve outlets for gases and gas mixtures Selection and dimensioning. DIN 477-1:1990, Gas cylinder valves rated for test pressures up to 300 bar Part 1: Types, siz
26、es and outlets. 1) 1 bar = 10 5N/m 2= 100 kPa.BS 341-3:2002 2 BSI 17 May 2002 3 Valve outlet connections for pressures up to 250 bar 3.1 Selection of outlets Valve outlets and connectors for pressures up to 250 bar for transportable gas cylinders shall be selected in accordance with Table 1. NOTE 1
27、Table 1 also gives alternative connections (see footnote ato Table 1) that are historically in service for containers with a maximum water capacity of 11.5 l. Although these alternative connections are listed for the particular gas with which they are used, the opportunity should be taken to remove
28、them from service and replace them with the primary outlet connections given in Table 1. NOTE 2 Annex A details outlet connections conforming to CGA Standard V-1 1. These connections are used in limited numbers in the UK. NOTE 3 Some gases are not used in sufficient quantities to enable a standard o
29、utlet connection to be recommended. The gases are normally imported into the UK conveyed in containers having outlets applicable to the country of origin. An outlet connection conforming to a recognized National or International standard is acceptable for UK service, provided that safe provision is
30、made for the user to ensure a sound connection (see Bibliography). NOTE 4 For refrigerant gases and gas mixtures it is established practice to use right-handed threaded valve outlets for non-flammable gas mixtures having flammable components. Container valves for gases or gas mixtures not listed in
31、Table 1 shall have valve outlets with left-hand threads for flammable gases, or gas mixtures having flammable components except for refrigerant gases. Non-flammable gases, or gas mixtures without flammable components, shall have valve outlets with right-hand threads. 3.2 Dimensions of outlets Dimens
32、ions of outlets shall be in accordance with Figure 1 to Figure 14 as applicable. Tolerances not determined in Figure 1 to Figure 14 shall be in accordance with Clause 5. 4 Valve outlet connections for pressures from 250 bar up to 300 bar 4.1 Selection of outlets Valve outlets and connectors for pres
33、sures from 250 bar up to 300 bar for transportable gas cylinders shall be selected in accordance with Table 2. 4.2 Dimensions of outlets Dimensions of outlets shall be in accordance with Figure 15. Tolerances not determined in Figure 15 shall be in accordance with Clause 5. 5 Tolerances Tolerances o
34、n valve outlets and connectors which are not determined in Figure 1 to Figure 15 shall be in accordance with the following British Standards as applicable. BS 84:1956 BS 2779:1986 BS 3643-1:1981 BS 3643-2:1981 BS 4500-4:1985 BS 4500-5:1988 BS EN 20286-1:1993 BS EN 20286-2:1993 BS EN 22768-1:1993 BS
35、EN ISO 7083:1995 The following conventions shall be adopted where machining tolerances are not specified on outlets 1 to 4, 6 to 8, 10, 11 and 13 to 18 (see Figure 1 to Figure 14). a) Where there is one digit after the decimal point the tolerance shall be 0.50 mm. b) Where there are two digits after
36、 the decimal point the tolerance shall be 0.050 mm.BS 341-3:2002 BSI 17 May 2002 3 Table 1 Outlet connections for use with gases up to pressures of 250 bar Gas (see Note 1) Outlet connection number (see Notes 2 and 3) Acetylene 2, 4, 18 a Air (R729) 3 Allene 4, 15 a Allylene: See Methylacetylene Amm
37、onia (R717) 10 Argon 3 Arsine 4 (or 1 from DIN 477-1:1990) Boron chloride: See Boron trichloride Boron fluoride: See Boron trifluoride Boron trichloride 6 (or 8 from DIN 477-1:1990) Boron trifluoride 6 (or 8 from DIN 477-1:1990) Bromine pentafluoride 6 (or 8 from DIN 477-1:1990) Bromine trifluoride
38、6 (or 8 from DIN 477-1:1990) Bromochlorodifluoromethane (R12B1) 6 Bromochloromethane 6 Bromoethylene: See Vinyl bromide Bromomethane: See Methyl bromide Bromotrifluoromethane (R13B1) 6 1,3-Butadiene 4, 15 a Butane (R600) 4 1-Butene 4 2-Butene 4 -Butylene: See 1-Butene -Butylene: See 2-Butene 1-Butyn
39、e: See Ethylacetylene Carbon dioxide (R744) 8 Carbon monoxide 4 Carbon oxysulfide: See Carbonyl sulfide Carbon tetrafluoride: See Tetrafluoromethane Carbonyl chloride: See Phosgene Carbonyl fluoride 14 Carbonyl sulfide 15 Chlorine 6, 14 a Chlorine pentafluoride 6, 14 (or 8 from DIN 477-1:1990) Chlor
40、ine trifluoride 6, 14 (or 8 from DIN 477-1:1990) 1-Chloro-1,1-difluoroethane (R142b) 7 Chlorodifluoromethane (R22) 6 Chloroethane: See Ethyl chloride Chloroethylene: See Vinyl chloride Chlorofluoromethane (R31) 4 or 7BS 341-3:2002 4 BSI 17 May 2002 Table 1 Outlet connections for use with gases up to
41、 pressures of 250 bar (continued) Gas (see Note 1) Outlet connection number (see Notes 2 and 3) Chloroheptafluorocyclobutane (RC317) 6 Chloromethane: See Methyl chloride Chloropentafluoroethane (R115) 6 1-Chloro-1,2,2,2-tetrafluoroethane (R124) 6 1-Chloro-2,2,2-trifluoroethane (R133a) 6 Chlorotriflu
42、oroethylene (R1113) 6 Chlorotrifluoromethane (R13) 6 Cyanogen 4 Cyanogen chloride 6 Cyclobutane 4 Cyclopropane 4 Deuterium 4 Deuterium chloride 6 (or 8 from DIN 477-1:1990) Deuterium fluoride 6 (or 8 from DIN 477-1:1990) Deuterium selenide 4 (or 1 from DIN 477-1:1990) Deuterium sulfide 15 Diborane 4
43、 (or 1 from DIN 477-1:1990) Dibromodifluoroethane 6 Dibromodifluoromethane (R12B2) 6 1,2-Dibromotetrafluoroethane (R114B2) 6 1,2-Dichlorodifluoroethylene 6 Dichlorodifluoromethane (R12) 6 1,2-Dichloroethylene (R1130) 4 Dichlorofluoromethane (R21) 6 1,2-Dichlorohexafluorocyclobutane (RC316) 6 Dichlor
44、osilane 15 (or 5 from DIN 477-1:1990) 1,1-Dichlorotetrafluoroethane (R114a) 6 1,2-Dichlorotetrafluoroethane (R114) 6 2,2-Dichloro-1,1,1-trifluoroethane (R123) 6 Dicyane: See Cyanogen Difluorodibromoethane: See Dibromodifluoroethane Difluorodibromomethane: See Dibromodifluoromethane 1,1-Difluoroethan
45、e (R152a) 7 Dimethylamine 11 Dimethyl ether 4 2,2-Dimethylpropane 4 Dinitrogen oxide: See Nitrous oxide Dinitrogen tetroxide: See Nitrogen dioxide Diphosgene 6, 14 (or 8 from DIN 477-1:1990) Disilane 4 (or 1 from DIN 477-1:1990)BS 341-3:2002 BSI 17 May 2002 5 Table 1 Outlet connections for use with
46、gases up to pressures of 250 bar (continued) Gas (see Note 1) Outlet connection number (see Notes 2 and 3) Epoxyethane: See Ethylene oxide Ethane (R170) 4 Ethene: See Ethylene Ethylacetylene 4 Ethylamine: See Monoethylamine Ethyl chloride (R160) 7, 17 Ethylene (R1150) 4 Ethylene dichloride: See 1,2-
47、Dichloroethylene Ethylene oxide 7, 15 a Ethyl ether 4 Ethyl fluoride 7 Ethylidene fluoride: See 1,1-Difluoroethane Ethyl methyl ether: See Methyl ethyl ether Ethyne: See Acetylene Fluorine 6, 14 (or 8 from DIN 477-1:1990) Fluoroethylene: See Vinyl fluoride Fluoroform (R23) 6 Fluoromethane: See Methy
48、l fluoride Germane 4 (or 1 from DIN 477-1:1990) Germanium tetrafluoride 6, 14 (or 8 from DIN 477-1:1990) Helium 3 Hexafluoroethane (R116) 3 (or 6 from DIN 477-1:1990) Hydriodic acid, anhydrous: See Hydrogen iodide Hydrobromic acid, anhydrous: See Hydrogen bromide Hydrochloric acid, anhydrous: See Hy
49、drogen chloride Hydrocyanic acid, anhydrous: See Hydrogen cyanide Hydrofluoric acid, anhydrous: See Hydrogen fluoride Hydrogen 4 Hydrogen bromide 6, 14 (or 8 from DIN 477-1:1990) Hydrogen chloride 6, 14 a(or 8 from DIN 477-1:1990) Hydrogen cyanide 15 Hydrogen fluoride 6 (or 8 from DIN 477-1:1990) Hydrogen iodide 6, 14 (or 8 from DIN 477-1:1990) Hydrogen selenide 15 (or 1 from DIN 477-1:1990) Hydrogen sulfide 15 Iodine pentafluoride 6, 14 (or 8 from DIN 477-1:1990) Isoa
