1、BSI Standards PublicationBS ISO 12614-4:2014Road vehicles Liquefiednatural gas (LNG) fuel systemcomponentsPart 4: Manual valveBS ISO 12614-4:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 12614-4:2014.The UK participation in its preparation was entrusted
2、to TechnicalCommittee GSE/40, Gas supply equipment for natural gas vehicles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctap
3、plication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 77149 1ICS 43.060.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Comm
4、ittee on 31 July 2014.Amendments issued since publicationDate Text affectedBS ISO 12614-4:2014 ISO 2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 4: Manual valveVhicules routiers quipements pour vhicules utilisant le gaz naturel liqufi (GNL) comme combustible Partie 4: Val
5、ve manuelleINTERNATIONAL STANDARDISO12614-4First edition2014-07-01Reference numberISO 12614-4:2014(E)BS ISO 12614-4:2014ISO 12614-4:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduce
6、d or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO
7、 copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 12614-4:2014ISO 12614-4:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and def
8、initions . 14 Marking 25 Construction and assembly . 26 Test 26.1 Applicability 26.2 Hydrostatic strength 36.3 Leakage 36.4 Continued operation 3Bibliography 4BS ISO 12614-4:2014ISO 12614-4:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national
9、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 technical committee has been established has the right to be represented on that committee. International
10、 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 electrotechnical standardization.The procedures used to develop this document and those intended for
11、 its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org
12、/directives). 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. Details of any patent rights identified during the development of the document will be
13、in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions
14、related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 25, Vehicle
15、s using gaseous fuels.ISO 12614 consists of the following parts, under the general title Road vehicles Liquefied natural gas (LNG) fuel system components: Part 1: General requirements and definitions Part 2: Performance and general test methods Part 3: Check valve Part 4: Manual valve Part 5: Tank p
16、ressure gauge Part 6: Pressure regulator Part 7: Pressure relief valve Part 8: Excess flow valve Part 9: Gas-tight housing and ventilation hose Part 10: Rigid fuel line in stainless steel Part 11: Fittings Part 12: Rigid fuel line in copper and its alloys Part 13: Pressure control regulator Part 14:
17、 Differential pressure fuel content gauge Part 15: Capacitance fuel content gaugeiv ISO 2014 All rights reservedBS ISO 12614-4:2014ISO 12614-4:2014(E) Part 16: Heat exchanger vaporizer Part 17: Natural gas detector Part 18: Gas temperature sensor ISO 2014 All rights reserved vBS ISO 12614-4:2014BS I
18、SO 12614-4:2014Road vehicles Liquefied natural gas (LNG) fuel system components Part 4: Manual valve1 ScopeThis part of ISO 12614 specifies tests and requirements for the manual valve, a liquefied natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833.
19、This part of ISO 12614 is not applicable to the following:1) fuel containers;2) stationary gas engines;3) container mounting hardware;4) electronic fuel management;5) refueling receptacles.NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to meet t
20、he criteria of this part of ISO 12614 and tested according to the appropriate functional tests.NOTE 2 All references to pressure in this part of ISO 12614 are to be considered gauge pressures unless otherwise specified.NOTE 3 This part of ISO 12614 is based upon a working pressure for natural gas as
21、 a fuel of 1,6 MPa (16 bar). (1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.) Other working pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, a 2 MPa (20 bar) working pressure system will require pressures to be multiplied by 1,25.2 Normative referen
22、cesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1
23、2614-1:2014, Road vehicles Liquefied natural gas (LNG) fuel system components Part 1: General requirements and definitionsISO 12614-2, Road vehicles Liquefied natural gas (LNG) fuel system components Part 2: Performance and general test methods3 Terms and definitionsFor the purposes of this document
24、, the terms and definitions given in ISO 12614-1 apply.INTERNATIONAL STANDARD ISO 12614-4:2014(E) ISO 2014 All rights reserved 1BS ISO 12614-4:2014ISO 12614-4:2014(E)4 MarkingMarking of the component shall provide sufficient information to allow the following to be traced:a) the manufacturers or age
25、nts name, trademark, or symbol;b) the model designation (part number);c) the working pressure or pressure and temperature range.The following additional markings are recommended:a) the direction of flow (when necessary for correct installation);b) the type of fuel;c) electrical ratings (if applicabl
26、e);d) the symbol of the certification agency;e) the type approval number;f) the serial number or date code;g) a reference to this part of ISO 12614 (i.e. ISO 12614-4:2014).NOTE This information can be provided by a suitable identification code on at least one part of the component when it consists o
27、f more than one part.5 Construction and assemblyThe manual valve shall comply with the applicable provisions of ISO 12614-1 and ISO 12614-2, and with the tests specified in Clause 6.6 Test6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.Table 1 Tests applicableTest Appl
28、icableTest procedure as required by ISO 12614-2Specific test requirements of this part of ISO 12614Hydrostatic strength X X X (see 6.2)Leakage X X X (see 6.3)Excess torque resistance X XBending moment X XContinued operation X X X (see 6.4)Corrosion resistance X XOxygen ageing X XElectrical overvolta
29、gesNon-metallic material immersion X XVibration resistance X XBrass material compatibility X X2 ISO 2014 All rights reservedBS ISO 12614-4:2014ISO 12614-4:2014(E)6.2 Hydrostatic strengthTest the manual valve according to the procedure for testing hydrostatic strength specified in ISO 12614-2. The te
30、st pressure shall be 2,5 times the working pressure.6.3 LeakageTest the manual valve at the temperatures and pressures given in Table 2.Table 2 Test temperatures and pressuresTemperature CPressure (factor working pressure)First Second162 1,0 WP 0,25 WP20 0,25 WP1,5 WP85 or 120 0,25 WP6.4 Continued o
31、peration6.4.1 Test the manual valve in accordance with the procedure for testing continued operation given in ISO 12614-2, for 100 cycles, but lower the downstream pressure of the test fixture to less than 0,5 MPa (5 bar), and perform the leakage test in accordance with 6.3.6.4.2 Following cycling a
32、nd leakage retesting, the manual valve shall be capable of completely opening and closing when a torque no greater than the appropriate one specified in Table 3 is applied to the valve handle in a direction that opens it completely and in the opposite direction. The test shall be conducted with the
33、valve pressurized at working pressure.Table 3 Torque testTest temperature Ambient temperature. 160 CComponent inlet size Max. torque Max. torquemm Nm Nm6 1,7 3,48 or 10 2,3 4,512 2,8 5,66.4.3 Conduct the test at the appropriate maximum temperature according to ISO 12614-1:2014, 4.3, then repeat the
34、test at a temperature of 162 C and with the appropriate maximum torque specified in Table 4, below.Table 4 Torque test repeatedTest temperature Ambient temperature 160 CComponent inlet size Max. torque Max. torquemm Nm Nm6 1,7 3,48 or 10 2,3 4,512 2,8 5,6 ISO 2014 All rights reserved 3BS ISO 12614-4
35、:2014ISO 12614-4:2014(E)Bibliography1 ISO 3833, Road vehicles Types Terms and definitions4 ISO 2014 All rights reservedBS ISO 12614-4:2014BS ISO 12614-4:2014ISO 12614-4:2014(E) ISO 2014 All rights reservedICS 43.060.40Price based on 4 pagesThis page deliberately left blankBSI is the national body re
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