ISO-22435-2007.pdf
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1、 Reference number ISO 22435:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 22435 First edition 2007-09-01 Gas cylinders Cylinder valves with integrated pressure regulators Specification and type testing Bouteilles gaz Robinets de bouteilles avec dtendeur intgr Spcifications et essais de type Copyright
2、International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 09/03/2007 01:10:02 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22435:2007(E) PDF disclaimer This PDF file may
3、contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the respon
4、sibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
5、 parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2007 A
6、ll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country
7、 of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights reserved Copyright International Organization for Standardization Provided by IHS under licen
8、se with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 09/03/2007 01:10:02 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22435:2007(E) ISO 2007 All rights reserved iii Contents Page Foreword. v Introduction. vi 1 Scope . 1 2 Normative referen
9、ces. 1 3 Terms and definitions. 2 4 Symbols and terminology 4 5 Design requirements 4 5.1 General. 4 5.2 Description 5 5.3 Materials 5 5.4 Pressure indicators 6 5.5 Filling connection. 6 5.6 Cylinder connection . 6 5.7 Outlet connection . 6 5.8 Outlet pressure for acetylene 7 5.9 Flow control valve
10、(flow controller) 7 5.10 Pressure adjusting device . 7 5.11 Filtration. 7 5.12 Main shut-off valve . 7 5.13 Flow and pressure performance for regulators without flow metering devices 7 5.14 Pressure relief valve. 8 5.15 Leakage 8 5.16 Mechanical strength. 8 5.17 Resistance to ignition. 9 5.18 Requir
11、ement for VIPR with flow metering devices 9 5.19 Constructional requirements. 9 5.20 Valve operating device. 9 6 Test methods. 10 6.1 General. 10 6.2 Documentation 11 6.3 Number of test samples. 11 6.4 Test sequence. 12 6.5 Test method for mechanical strength. 13 6.6 Test methods for flow and pressu
12、re performance for regulators without flow metering devices. 13 6.7 Test method for relief valve. 21 6.8 Pressure retention of the low-pressure side of the pressure regulator 21 6.9 Test method for flowmeter mechanical strength 22 6.10 Test method for accuracy of VIPR with flowmeter 22 6.11 Test met
13、hod for accuracy of VIPR with flowmeter and with fixed orifices. 22 6.12 Test methods for leakage 22 6.13 Test method for operating and loosening torques . 23 6.14 Test method for endurance of the main shut-off mechanism 23 6.15 Test method for endurance of the non-return valve. 25 6.16 Test method
14、for ignition. 25 6.17 Test method for resistance to acetylene decomposition. 26 6.18 Test method for flame resistance of the valve operating device. 26 7 Marking 29 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User
15、=Wing, Bernie Not for Resale, 09/03/2007 01:10:02 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22435:2007(E) iv ISO 2007 All rights reserved 8 Instructions29 Annex A (normative) Valve impact test30 Annex B (informative) Endurance test .32 Bibliography .36 Copyright I
16、nternational Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 09/03/2007 01:10:02 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22435:2007(E) ISO 2007 All rights reserved v For
17、eword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (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 tech
18、nical committee has been established has the right to be represented on that committee. International organizations, 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
19、 electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/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 t
20、o the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the 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
21、 identifying any or all such patent rights. ISO 22435 was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 2, Cylinder fittings. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bern
22、ie Not for Resale, 09/03/2007 01:10:02 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 22435:2007(E) vi ISO 2007 All rights reserved Introduction Cylinder valves with integrated pressure regulators are used to reduce the high cylinder pressure to a lower pressure suitab
23、le for use. These functions cover a wide range of inlet and outlet pressures and flows which require specific design characteristics. It is important that the operating characteristics of these valves be specified and tested in a defined manner. Such valves are more complicated than conventional cyl
24、inder valves yet subject to the same environmental and transportation conditions. These conditions should be borne in mind at the design and development stage. This International Standard pays particular attention to suitability of materials, safety (mechanical strength, safe relief of excess pressu
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