BS EN 850-1997 可移动的储气瓶.医用枢接轭状阀门出口接头.pdf

| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 850 1997 Incorporating Amendments Nos. 1 and 2 The European Standard EN 850 1996, with the incorporation of amendment A12000 has the status of a British Standard ICS 23.020.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Transportable gas cylinders Pin-index, yoke-type valve outlet connections for medical use BS EN 850 1997 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 March 1997  BSI 05-2001 The following BSI references relate to the work on this standard Committee reference PVE/3 Draft for comment 92/81293 DC ISBN 0 580 26778 4 Amendments issued since publication Amd. No.DateComments 10097July 1998See national foreword 13044May 2001Indicated by a sideline Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PVE/3, Gas containers, upon which the following bodies were represented Aluminium Extruders Association Aluminium Federation British Compressed Gases Association British Fire Consortium British Gas plc British Iron and Steel Producers Association British Soft Drinks Association Ltd. Engineering Equipment and Materials Users Association Fire Extinguishing Trades Association Health and Safety cutive Home Office Institution of Chemical Engineers LP Gas Association Marine Safety Agency Ministry of Defence National Engineering Laboratory National Physical Laboratory Safety Assessment Federation Ltd. Safety Equipment Association Tube Investments Chesterfield Tube Co. Ltd. Tubes Investments Limited The following bodies were also represented in the drafting of the standard, through subcommittees and panels Association of British Oceanological Industries Ltd. British Association of Breathing Apparatus Service Engineers British Sub-Aqua Club Department of Health International Marine Contractors Association Natural Gas Vehicle Association BS EN 850 1997  BSI 05-2001i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN 8503 ii BSI 05-2001 BS EN 850 1997 National foreword This British Standard has been prepared by Technical Committee PVE/3 and is the English language version of EN 850 1996 Transportable gas cylinders Pin-index, yoke-type valve outlet connections for medical use, including amendment A12000, published by the European Committee for Standardization CEN. Amendment No. 1 to BS EN 850 1997 replaced Table 3 and was published as a CEN corrigendum in April 1998. EN 850 was produced as a result of international discussions in which the United Kingdom took an active part. This British Standard supersedes BS 1319 1976 and BS 1319C 1976 which are withdrawn. The Technical Committee has reviewed the provisions of ISO 32 to which normative reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their 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, the EN title page, pages 2 to 25 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Sidelining in this document indicates the most recent changes by amendment. w w w . b z f x w . c o m CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat rue de Stassart 36, B-1050 Brussels  CEN 1997 Copyright reserved to CEN members Ref. No. EN 850 1996 A12000 E EUROPEAN STANDARDEN 850 NORME EUROPE ENNE July 1996 EUROPA ISCHE NORM A1 November 2000 ICS 23.020.30Incorporates corrigendum April 1998 Descriptors Gas cylinders, medical equipment, medical gases, gas mixtures, gas valves, pipe fittings, valve yokes, safety devices, catches, equipment specifications, dimensions English version Transportable gas cylinders Pin-index, yoke-type valve outlet connections for medical use includes amendment A12000 Bouteilles a gaz transportables Raccords de sortie de robinets du type a e trier avec ergots de se curite pour usage me dical inclut lamendment A12000 Ortsbewegliche Gasflaschen Ventilseitenstutzen mit Anschlu bu gel nach dem Pin-index-System fu r medizinische Anwendung entha lt A nderung A12000 This European Standard was approved by CEN on 1996-02-16. Amendment A12000 was approved by CEN on 2000-10-20. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. w w w . b z f x w . c o m Page 2 EN 850 1996  BSI 05-2001 | | | | | | | | | | | | | | | | | | Foreword This European Standard has been prepared by Technical Committee CEN/TC 23, Transportable gas cylinders, the secretariat of which is held by BSI. ISO 407 1991 was used as the base document. 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 January 1997, and conflicting national standards shall be withdrawn at the latest by January 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This amendment EN 8501996/A12000 to the EN 8501996 has been prepared by Technical Committee CEN/TC 23, Transportable gas cylinders, 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 May 2001, and conflicting national standards shall be withdrawn at the latest by May 2001. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Valve3 4Yoke4 5Basic dimensions4 6Requirements for alternative designs of pin-index, yoke-type valve connections7 7Positions of holes and pins for pin-index, yoke-type valve connections11 w w w . b z f x w . c o m Page 3 EN 850 1996  BSI 05-2001 1 Scope This European Standard applies to pin-index, yoke-type valve outlet connections for medical use, up to a maximum working pressure of 250 bar at 15 C. These connections are for use with medical gas cylinders of water capacity below 5 L, for patient care, including therapeutic, diagnostic and prophylactic applications, in hospitals and for emergency treatment. It specifies basic dimensions; requirements for alternative designs of pin-index, yoke-type valve connections; dimension and positions for the holes and pins for the outlet connections for certain gases and gas mixtures. 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, subsequent 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. IS0 32Gas cylinders for medical use Marking for identification of cylinder content 3 Valve Basic dimensions of yoke-type, pin-index valve bodies, are given in clause 5. Dimensions and positions of location holes and pins are given in clause 7. The name or chemical symbol of the gas or gas mixture shall be clearly and indelibly marked on the valve. Table 1 lists the allocated gases and gas mixtures, the chemical symbols and the corresponding outlet connection figure numbers. Table 1. Allocated gases and gas mixtures Gas or gas mixtureChemical symbol Outlet connection figure number OxygenO29 Oxygen/carbon dioxide CO2 7 O2 CO210 Oxygen/helium He 80 O2 He11 EthyleneC2H412 Nitrous oxide liquid draw off N2Otable 3 Nitrous oxide gas draw off N2O13 CyclopropaneC3H614 Helium and helium/oxygen O2 7 CO2 CO2 O2 16 Medical airAir17 Nominal mixture 50 oxygen/50 nitrous oxide 47,5 N2O 52,5 O2 N2O8 NitrogenN218 Mixture of air, helium and carbon monoxide CO 1 Air He COtable 3 w w w . b z f x w . c o m Page 4 EN 850 1996  BSI 05-2001 4 Yoke The connecting yoke shall con to the dimensions and requirements given in clauses 5 and 6. The yoke shall be fitted with pins, the dimensions and the positions of which corresponds to the holes in the valve, as indicated in clause 7, for the appropriate gas or gas mixture. The name or chemical symbol of the gas or gas mixture shall be clearly and indelibly marked on the yoke see table 1. If an identification colour is used, it shall be in conity with IS0 32. Examples of alternative designs, for the connecting yoke, are given in 6.2. 5 Basic dimensions The basic requirements for pin-index, yoke-type valve connections are shown in figure 1. Figures 2, 3 and 4 show alternative pin arrangements. Table 2 gives the necessary dimensions. Table 2. Basic dimensions for pin-index, yoke-type valve connections SymbolDimension mm SymbolDimension mm a 25 20,2 0,8 e0,8 max b 22,2 0 0,4 f0,8 max c16 ming1,60,4 D 7 0 0,2 h2200,5 D12,40,8k16,5 min D2 4,75 0 0,1 1144,5 min D35,8 to 5,91222 min D4 6,3 20,2 0 13 3 8 min D5 6 20,5 0 14 3 9,6 max D6 1 7 min15 5,5 0 0,5 d 6,5 20,2 0 16 5,520,5 0 d140,1173 to 3,6 d2 5,4 20,1 0 1815 min d3160,5r14,30,07 d490,2r112 nom r217,5 nom 1D6 is the dimension at the top of the yoke clamping screw cone. 2For h, q and q1 see clauses 5 and 6. As an alternative, these dimensions may be given in order to satisfy the requirements of 6.1 g. 3Applicable only if a projecting pressure relief device is used. w w w . b z f x w . c o m  BSI 05-2001 Page 5 EN 850 1996 0,5 - 0,1 0 l 8 l 3 l 2 l 1 8 min. D D1 h Pressure relief device Sealing washer 120 100 120 100 D6 D5 a e d4 b 3 d D4 g k d t l 7 Yoke Detail of yoke clamping screw c l 4 X Section X-X - 0 5,5 9 X Dimensions in mm Figure 1. Pin-index, yoke-type valve body and yoke w w w . b z f x w . c o m Page 6 EN 850 1996  BSI 05-2001 r D6 d 2 D3 l 6 l 5 Figure 2. Pin-index, yoke-type valve connection single pin r d 1 D2 l 6 l 5 1 2 3 6 5 4 D1 h c l 8 r NOTE. Dimensional positions of holes and pins, numbered 1 to 6, are shown in figures 9 to 18. Figure 3. Pin-index, yoke-type valve connection two pins on a single arc Page 7 EN 850 1996  BSI 05-2001 r d 1 D2 l 6 l 5 B F G D J H 2 r 1 C A E One pin only is shown for clarity NOTE. Dimensional positions of holes and pins, identified by the letters A to J, are shown in table 3. Figure 4. Pin-index, yoke-type valve connection two pins on double arcs 6 Requirements for alternative designs of pin-index, yoke-type valve connections 6.1 Requirements for the design of the connecting yoke The design of the connection shall meet the following requirements a a gas-tight seal shall only be possible when the pins in the yoke match the corresponding holes in the valve; b when the pins in the yoke do not correspond to the holes in the valve, a gas-tight seal shall not be possible and damage to the yoke, or the valve shall be avoided; c pins shall be fixed or assembled in such a manner that they cannot be removed by the user, or become loose in service; d the sealing washer shall be a tight fit on the yoke spigot; e the use of more than one sealing washer is not permitted; f the yoke shall be able to resist, without permanent deation, the load resulting from a torque of 50 Nm applied to the clamping screw or closing device; g the dimensions of the yoke shall be such as to limit the movement of the yoke, respective to the valve, to a maximum of 6 about the long axis of the valve, prior to pin engagement. 6.2 Examples of alternative constructions for the connecting yoke Three alternative designs of pin-index, yoke-type connection are shown in figures 5 to 7. Page 8 EN 850 1996  BSI 05-2001 | p q Y Y s Y - Y SymbolDimension mm p 1 44,5 max. q 2 24 0 0,5 s 3 0,8 min. 1 May be reduced to 35 mm if clearance is provided for projecting pressure relief device. 2 See the note concerning dimension h in table 2. 3Applicable only if a projecting pressure relief device is used. Figure 5. Screwed yoke Page 9 EN 850 1996  BSI 05-2001 | 1 View with clamping screw removed p 1 s q1 Symbol Dimension mm p130,2 max. q1 1 24 0 0,5 s1 2 0,8 min. 1See the note concerning dimension h in table 2. 2Applicable only if a projecting pressure relief device is used. Figure 6. Bolted yoke Page 10 EN 850 1996  BSI 05-2001 NOTE