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1、BRITISH STANDARD BS EN ISO 10297:2006 Transportable gas cylinders Cylinder valves Specification and type testing The European Standard EN ISO 10297:2006 has the status of a British Standard ICS 23.060.40; 23.020.30 ? BS EN ISO 10297:2006 This British Standard was published under the authority of the
2、 Standards Policy and Strategy Committee on 31 March 2006 BSI ISBN 0 580 47899 8 National foreword This British Standard is the official English language version of EN ISO 10297:2006. It is identical with ISO 10297:2006. It supersedes BS EN 849:1997 which is withdrawn. The UK participation in its pr
3、eparation was entrusted by Technical Committee PVE/3, Gas containers, to Subcommittee PVE/3/1, Valve fittings for gas containers, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standa
4、rds 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 Online. This
5、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 responsible intern
6、ational/European committee any enquiries on the interpretation, or proposals for change, and keep 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, the EN ISO ti
7、tle page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 27 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EURO
8、PENNE EUROPISCHE NORM EN ISO 10297 January 2006 ICS 23.060.40; 23.020.30Supersedes EN 849:1996 English Version Transportable gas cylinders - Cylinder valves - Specification and type testing (ISO 10297:2006) Bouteilles gaz transportables - Robinets de bouteilles - Spcifications et essais de type (ISO
9、 10297:2006) Ortsbewegliche Gasflaschen - Flaschenventile - Spezifikation und Typprfung (ISO 10297:2006) This European Standard was approved by CEN on 19 October 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European St
10、andard 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, Frenc
11、h, 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, Cyprus, Czech Republ
12、ic, 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 COMIT EUROPEN DE N
13、ORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10297:2006: E Foreword This document (EN ISO 10297:2006) has been prepared b
14、y Technical Committee ISO/TC 58 “Gas cylinders“ in collaboration with 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 endors
15、ement, at the latest by July 2006, and conflicting national standards shall be withdrawn at the latest by July 2006. This document supersedes EN 849:1996. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Eu
16、ropean Standard: Austria, Belgium, 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. En
17、dorsement notice The text of ISO 10297:2006 has been approved by CEN as EN ISO 10297:2006 without any modifications. EN ISO 10297:2006 Reference number ISO 10297:2006(E) INTERNATIONAL STANDARD ISO 10297 Second edition 2006-01-15 Transportable gas cylinders Cylinder valves Specification and type test
18、ing Bouteilles gaz transportables Robinets de bouteilles Spcifications et essais de type EN ISO 10297:2006 ii iii Contents Page Foreword iv Introduction v 1Scope . 1 2Normative references. 1 3Terms, definitions and symbols 2 4Valve design requirements 4 4.1General. 4 4.2Description 4 4.3Materials 4
19、4.4Dimensions 5 4.5Valve connections 5 4.6Mechanical strength. 6 4.7Valve operating mechanism 7 4.8Leakage 7 4.9Resistance to ignition. 8 5Production requirements. 8 5.1Manufacturing. 8 5.2Cleaning. 8 6Type test methods 8 6.1General. 8 6.2Documentation 9 6.3Number of test samples. 9 6.4Test report .
20、 9 6.5Ambient conditions 9 6.6Valve test pressure. 10 6.7Test gas . 10 6.8Test sequence. 10 6.9Hydraulic pressure test 11 6.10Excessive torque tests. 11 6.11Leak tightness tests . 11 6.12Endurance test 13 6.13Flame impingement test. 13 6.14Oxygen pressure surge test 13 6.15Acetylene flashback test 1
21、6 7Marking 18 Annex A (normative) Valve impact test 19 Annex B (informative) Example of test sequence. 21 Annex C (normative) Endurance test. 22 Bibliography. 26 EN ISO 10297:2006 iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bod
22、ies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organization
23、s, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the I
24、SO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the
25、 member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 10297 was prepared by Technical Committee ISO/TC 58, Gas cylinders
26、, Subcommittee SC 2, Cylinder fittings. This second edition cancels and replaces the first edition (ISO 10297:1999), which has been technically revised. EN ISO 10297:2006 v Introduction Cylinder valves are fitted on gas cylinders used in, for example, industrial, medical and breathing applications.
27、Such valves have to perform safely and reliably for at least the cylinder test period, often in hazardous situations. Valves complying with this International Standard can be expected to perform satisfactorily under normal services conditions. This International Standard pays particular attention to
28、: ? suitability of materials; ? dimensions of inlet connections; ? dimensions of outlet connections; ? safety (mechanical strength, endurance, resistance to ignition); ? leakage; ? cleanliness; ? testing; ? identification. NOTE For satisfactory service, valves are manufactured and batch tested to IS
29、O 14246. EN ISO 10297:2006 blank 1 Transportable gas cylinders Cylinder valves Specification and type testing 1 Scope This International Standard specifies valve design, production and marking requirements, and type test methods for valves intended to be fitted to gas cylinders which convey compress
30、ed, liquefied or dissolved gases. This International Standard does not apply to valves for cryogenic equipment, for fire extinguishers or for liquefied petroleum gas (LPG). Additional specific requirements for valves fitted with pressure-reducing devices (see ISO 22435 and EN 738-3), residual pressu
31、re-retaining devices and non-return devices (see ISO 15996), and bursting discs and pressure-relief devices (see ISO 4126 and prEN 14513) are not covered by this International Standard. NOTE Requirements for valves for liquefied petroleum gas (LPG) are specified in ISO 14245 and EN 13152, and in ISO
32、 15995 and EN 13153. Requirements for valves for cryogenic vessels are specified in ISO 21011. Further specific requirements for valves for breathing apparatus are specified in EN 144-1, EN 144-2 and EN 144-3. 2 Normative references The following referenced documents are indispensable for the applic
33、ation 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. ISO 407, Small medical gas cylinders Pin-index yoke-type valve connections ISO 5145, Cylinder valve outlets for gase
34、s and gas mixtures Selection and dimensioning ISO 8573-1, Compressed air Part 1: Contaminants and purity classes ISO 10156, Gases and gas mixtures Determination of fire potential and oxidizing ability for the selection of cylinder valve outlets ISO 10286, Gas cylinders Terminology ISO 10692-1, Gas c
35、ylinders Gas cylinder valve connections for use in the microelectronics industry Part 1: Outlet connections ISO 15001, Anaesthetic and respiratory equipment Compatibility with oxygen EN ISO 10297:2006 2 3 Terms, definitions and symbols For the purposes of this document, the terms, definitions and sy
36、mbols given in ISO 10286 and the following apply. 3.1 working pressure pw ?compressed gases? settled pressure, at a uniform temperature of 15 C, for a full gas cylinder with the maximum permissible charge of compressed gas NOTE 1 In this International Standard, it corresponds to the maximum working
37、pressure of the cylinders for which the valve is intended to be used. NOTE 2 This definition does not apply to liquefied gases or dissolved gases (e.g. acetylene). 3.2 valve test pressure pvt pressure applied to a valve through a gas (or a liquid medium for hydraulic pressure test only) during type
38、testing 3.3 external leak tightness leak tightness to atmosphere (leakage in and/or leakage out) when the valve is open NOTE See Figure 1. p u pap W pa Key 1 connection to customer equipment (closed) a Leakage in. b Leakage out. p = internal pressure pa= atmospheric pressure Figure 1 External leak t
39、ightness 3.4 internal leak tightness leak tightness across the valve seat (leakage in and/or leakage out) when the valve is closed EN ISO 10297:2006 3 NOTE See Figure 2. p u pap W pa Key 1 connection to customer equipment (open) a Leakage in. b Leakage out. p = internal pressure pa= atmospheric pres
40、sure Figure 2 Internal leak tightness 3.5 minimum closing torque Tc torque necessary to be applied to a valve operating mechanism to obtain internal leak tightness 3.6 resistance torque maximum opening or closing torque (whichever is the lesser) applied to a valve operating mechanism which the valve
41、 can withstand without damage 3.7 valve operating mechanism mechanism which closes and opens the valve orifice EXAMPLE A threaded valve spindle which, when rotated, raises and lowers a seal. 3.8 valve operating device component which actuates the operating mechanism of the valve EXAMPLE Handwheel or
42、 actuator. 3.9 total package mass combined mass of a gas cylinder, its permanent attachment and its maximum allowed content NOTE Valve and valve guard are examples of permanent attachments. EN ISO 10297:2006 4 4 Valve design requirements 4.1 General Valves shall operate satisfactorily over a range o
43、f service temperatures, from ? 20 C to ? 65 C in indoor and outdoor environments. The range may be extended for short periods (e.g. during filling). Where higher or lower service temperatures are required for longer periods, the purchaser shall specify accordingly. Valves shall be capable of withsta
44、nding the mechanical stresses or chemical attack they can experience during intended service, e.g. during storage, valving into cylinders, filling processes, transportation and end use of the cylinder. 4.2 Description This International Standard does not prescribe the components that a cylinder valv
45、e shall comprise. A cylinder valve typically comprises the following: a) body; b) operating mechanism (to open and close the valve); c) valve operating device; d) means to ensure internal leak tightness; e) means to ensure external leak tightness; f) outlet connection(s) (to fill and discharge the c
46、ylinder); g) inlet connection to the cylinder; h) pressure-relief device (see ISO 11622 and/or other applicable standards, e.g. ISO 4126); i) siphon tube; j) screwed plug or cap on the outlet connection; k) excess flow limiting device; l) means to prevent the ingress of atmospheric air; m) residual
47、pressure retaining device (see ISO 15996); n) outlet pressure reduction mechanism; o) flow restricting orifice; p) filter(s). 4.3 Materials Metallic and non-metallic materials in contact with the gas shall be chemically and physically compatible with the gas, under all intended operating conditions
48、(see, for example, ISO 11114-1, ISO 11114-2 and material specifications of the producer). For medical and breathing applications, see ISO 15001, especially when selecting materials to reduce the risk of toxic products of combustion/decomposition from non-metallic materials including lubricants. EN I
49、SO 10297:2006 5 In medical or breathing applications, components which are in contact with the gas shall not be plated or coated unless means are provided to ensure that any particles generated by such surfaces are prevented from entering the gas stream. Ignition resistance in oxygen or other highly oxidizing gases (see ISO 10156) of non-metallic materials and lubricants shall have been established by an appropriate test procedure (see ISO 11114-3). Because o