1、ANSI/IAS NGV 4.6-1999CSA 12.56-M99AMERICAN NATIONAL STANDARD/CSA STANDARDFORMANUALLY OPERATEDVALVES FOR NATURAL GASDISPENSING SYSTEMSAMERICAN NATIONAL STANDARD CANADIAN STANDARDS ASSOCIATIONANSI/IAS NGV 4.6-1999 CSA 12.56-M99First Edition - 1999MANUALLY OPERATED VALVES FOR NATURAL GAS DISPENSING SYS
2、TEMSApproved byAmerican National Standards Institute, Inc., February 18, 1999Interprovincial Gas Advisory Council, March 15, 1999This Standard is effective June 1, 2000Prepared byCSA INTERNATIONAL8501 East Pleasant Valley Road 178 Rexdale BoulevardCleveland, Ohio 44131 Toronto, OntarioCanada M9W 1R3
3、On behalf ofthe Natural Gas Vehicle CoalitionPublished - July 1999Copyright 1998Canadian Standards AssociationPermission is granted to republish material herein in laws or ordinances,and in regulations, administrative orders, or similar documents issued bypublic authorities. Those desiring permissio
4、n for other republicationshould consult CSA International at 178 Rexdale Boulevard, Toronto,Ontario, Canada M9W 1R3.Copyright 1999CSA America, Inc.Permission is granted to republish material herein in laws or ordinances,and in regulations, administrative orders, or similar documents issued bypublic
5、authorities. Those desiring permission for other republicationshould consult CSA International at 8501 E. Pleasant Valley Road,Cleveland, Ohio 44131.CANADIAN STANDARDS ASSOCIATIONThe Canadian Standards Association, which operatesunder the name CSA International (CSA), under whoseauspices this Standa
6、rd has been produced, was chartered in1919 and accredited by the Standards Council of Canada tothe National Standards system in 1973. It is a not-for-profit,nonstatutory, voluntary membership association engaged instandards development and certification activities.CSA standards reflect a national co
7、nsensus of producers andusers including manufacturers, consumers, retailers,unions and professional organizations, and governmentalagencies. The standards are used widely by industry andcommerce and often adopted by municipal, provincial, andfederal governments in their regulations, particularly in
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11、, CSA has regional branch offices in major centresacross Canada and inspection and testing agencies in eightcountries. Since 1919, the Association has developed thenecessary expertise to meet its corporate mission: CSA is anindependent service organization whose mission is to providean open and effe
12、ctive forum for activities facilitating theexchange of goods and services through the use of standards,certification and related services to meet national andinternational needs.LAssociation canadienne de normalisation, maintenantconnue sous le nom CSA International (CSA), sous lesauspices de laquel
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14、fication.Les normes CSA refltent le consensus de producteurs etdusagers de partout au pays, au nombre desquels setrouvent des fabricants, des consommateurs, des dtaillantset des reprsentants de syndicats, de corps professionnels etdagences gouvernementales. Lutilisation des normes CSA esttrs rpandue
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17、e la CSA parmi lesquels sesadministrateurs sont choisis. Les cotisations des membres desoutien reprsentent une source importante de revenu pourles services de soutien la normalisation volontaire.LAssociation offre des services de certification et de mise lessai qui appuient et compltent ses activits
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19、s centres vitauxpartout au Canada, de mme que des agences dinspectionet dessai dans huit pays. Depuis 1919, lAssociation a parfaitles connaissances techniques qui lui permettent de remplirsa mission dentreprise, savoir la CSA est un organisme deservices indpendant dont la mission est doffrir une tri
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21、plus amples renseignements sur les services de la CSA,sadresser CSA International178 Rexdale BoulevardToronto, Ontario, M9W 1R3CanadaAMERICAN NATIONAL STANDARDS INSTITUTEThe American National Standards Institute (ANSI),Inc. is the nationally recognized coordinator of voluntarystandards development i
22、n the United States throughwhich voluntary organizations, representing virtuallyevery technical discipline and every facet of trade andcommerce, organized labor and consumer interests,establish and improve the some 10,000 nationalconsensus standards currently approved as AmericanNational Standards.A
23、NSI provides that the interests of the public mayhave appropriate participation and representation instandardization activity, and cooperates withdepartments and agencies of U.S. Federal, state andlocal governments in achieving compatibility betweengovernment codes and standards and the voluntarysta
24、ndards of industry and commerce.ANSI represents the interests of the United Statesin international nontreaty organizations such as theInternational Organization for Standardization (ISO) andthe International Electrotechnical Commission (IEC).The Institute maintains close ties with regionalorganizati
25、ons such as the Pacific Area StandardsCongress (PASC) and the Pan American StandardsCommission (COPANT). As such, ANSI coordinates theactivities involved in the U.S. participation in thesegroups.ANSI approval of standards is intended to verifythat the principles of openness and due process havebeen
26、followed in the approval procedure and that aconsensus of those directly and materially affected bythe standards has been achieved. ANSI coordination isintended to assist the voluntary system to ensure thatnational standards needs are identified and met with aset of standards that are without confli
27、ct or unnecessaryduplication in their requirements.Responsibility of approving American National Standards rests with theAmerican National Standards Institute, Inc.11 West 42nd StreetNew York, NY10036PREFACEThis publication represents a standard for safe operation, substantial and durable constructi
28、on andperformance testing of components for manually operated valves for natural gas dispensing systems, withinlimitations given below and in the scope of this standard.This standard is based on proven engineering principles, research and the combined expertise of gasutilities, manufacturers, users,
29、 and others having specialized experience.Nothing in this standard is to be considered in any way as indicating a measure of quality beyondcompliance with the provisions it contains. It is designed to allow compliance of products which mayexceed that specified in the provisions herein. In its prepar
30、ation, full recognition has been given topossibilities of improvement through ingenuity of design. This standard is subject to revision as furtherexperience and investigation may show it is necessary and desirable.CSA International (CSA), and their respective Laboratories, do not assume or undertake
31、 to discharge anyresponsibility of the manufacturer or any other party. CSA International, shall not incur any obligation orliability for damages, including consequential damages, arising out of or in connection with the use,interpretation of or reliance upon this standard.Users of this Harmonized A
32、merican National and Canadian Standards Association Standard are advisedthat the devices/products/activities within its scope may be subject to regulation at the Federal, state,provincial, or local levels. Users are strongly urged to investigate this possibility through appropriatechannels. In the e
33、vent of a conflict with this standard, the Federal, state, provincial or local regulationsshould be followed.This standard does not apply to fuel system components that will be incorporated during originalmanufacture of motor vehicles which comply with Federal Motor Vehicle Safety Standards (FMVSS)
34、orCanadian Motor Vehicle Safety Standards (CMVSS) for Natural Gas Powered Vehicles.CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. Theprocedures of the American National Standards Institute, Inc., require that action be taken to reaffirm,revise, or withdraw t
35、his standard no later than five (5) years from the date of approval. Purchasers mayreceive current information on this and other ANSI standards by calling or writing CSA International, 8501East Pleasant Valley Road, Cleveland, Ohio 44131, (216) 524-4990.Information on this and other Canadian standar
36、ds can be obtained by calling or writing CSA International,78 Rexdale Boulevard, Toronto, Ontario, Canada M9W 1R3.EFFECTIVE DATE: An organization using this standard for product evaluation as a part of itscertification program will normally establish the date by which all products certified by that
37、organizationshould comply with this standard. In Canada, effective dates are established by the Interprovincial GasAdvisory Council.HISTORY OF DEVELOPMENT OF ANSI/IAS NGV 4.6iiCSA 12.56(This history is informative and is not part of the standard)During 1984, there was growing need in the U.S. natura
38、l gas vehicle industry for guidelines pertaining tothe assembly of aftermarket equipment installed on motor vehicles in order to operate alternatively oneither gasoline or natural gas. The American Gas Association Laboratories (AGAL), in response to thisneed developed an A.G.A. Requirement for Natur
39、al Gas Vehicle (CNG) Conversion Kits, No. 1-85. Thisrequirement was intended to help promote the safe development and installation of NGV conversionsystems by manufacturers and installers. The first draft of A.G.A. Requirement No. 1-85 was developedduring 1984 and 1985, with the final version dated
40、August 20, 1985.At the time of its issuance, the A.G.A. No. 1-85 was in compliance with NGV equipment and fuelingstations specifications published by the National Fire Protection Association (NFPA) under its Standard forCompressed Natural Gas (CNG) Vehicular Fuel Systems, NFPA 52. The first edition
41、of NFPA 52 wasissued in 1984. A second edition was issued in 1988.In 1988 a group of U.S. gas utilities formed the Natural Gas Vehicle (NGV) Coalition (the Coalition) topromote widespread use of compressed natural gas as a transport fuel. The Coalition organized committeesto address technical, marke
42、ting and legislative issues which would affect the future expansion of a U.S.transportation industry fueled by natural gas.The Coalition recognized that an important consideration in the successful commercialization of natural gasas a vehicle fuel was the issue of codes and standards (or the lack of
43、 codes and standards, or harmonizedcodes and standards) pertaining to both fuel stations and vehicle fuel systems. The Coalitions TechnologyCommittee was established to achieve the goal of an organized family of coordinated codes, standards andregulations addressing natural gas vehicles and fueling
44、stations. To help achieve this goal, the TechnologyCommittee established the Standards and Standardization Subcommittee.Subsequently, the third edition of NFPA 52 was published in 1992. This current edition incorporates manychanges developed and recommended by the NGV Coalitions task groups.During A
45、ugust 1992, an NGV Conversion Equipment Task Group was established to coordinate with theAGAL for requirements for compressed NGV conversion kits. The task group agreed the phrase “NGVfuel system” should replace “NGV conversion kits.” (An NGV fuel system is comprised of all majorcomponents required
46、to supply, manage, and/or control fuel flow, enabling a vehicle to operate on naturalgas.) The task group continued to meet during August, October and December 1992 to promulgate thedevelopment of a standard to cover both dedicated and bi-fuel natural gas systems for light and mediumduty vehicles.A
47、standard for NGV fuel system components already existed in Canada namely the National Standard ofCanada CAN/CGA 12.3, Fuel System Components for Natural Gas Powered Vehicles. The genesis for thisCanadian document was the Amendment to the 1982 CGA B149.1, Natural Gas Installation Code whichadded to t
48、he Code provisions for Natural Gas for Vehicles (NGV) fuel system components on highwayvehicles, as well as coverage of NGV refuelling stations, Subsequently these NGV aspects evolved intostand-alone Canadian documents, one being the CAN/CGA-12.3 which was first published in February1991.In order to
49、 further common goals for North American harmonization, the task group and the CanadianGas Association (CGA) NGV Steering Committee on Natural Gas Powered Vehicles, initiated formationof a joint activity involving the CGA Steering Committees Subcommittee on Fuel System Componentsfor Natural Gas Powered Vehicles and the Coalitions NGV Conversion Equipment Task Group.On February 17, 1993, the first joint meeting of the NGV Conversion Equipment Task Group and theCGA 12.3 Standards Sub
