1、ANSI Z21.18-2007CSA 6.3-2007American National Standard/ CSA Standard ForGas Appliance Pressure RegulatorsCopyright CSA America, Inc. Provided by IHS under license with CSA/AM Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Standard DeveloperAPPROVEDCSA AMERICA INC.
2、 8501 East Pleasant Valley RoadCleveland, Ohio 44131CANADIAN STANDARDS ASSOCIATION5060 Spectrum Way, Suite 100Mississauga, Ontario, Canada L4W 5N6Published - October 2007Copyright 2007Canadian Standards AssociationPermission is granted to republish material herein in laws or ordinances, and in regul
3、ations, administrative orders, or similar documents issued by public authorities. Those desiring permission for other republication should consult Canadian Standards Association, 5060 Specrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6.Copyright 2007CSA America, Inc.Permission is granted to
4、 republish material herein in laws or ordinances, and in regulations, administrative orders, or similar documents issued by public authorities. Those desiring permission for other republication should consult CSA America, Inc., 8501 East Pleasant Valley Road, Cleveland, Ohio 44131.AMERICAN NATIONAL
5、STANDARDANSI Z21.18-2007CSA STANDARDCSA 6.3-2007Third Edition - 2007This Standard is based on the Standard forGas Appliances Pressure RegulatorsANSI Z21.18-2000 CSA 6.3-2000and Addendas Z21.18a-2001 CSA 6.3a-2001,Z21.18b-2005 CSA 6.3b-2005July 19, 2007American National Standards Institute, Inc.Septe
6、mber 14, 2007Interprovincial Gas Advisory Council Effective in Canada May 1, 2009IGACCopyright CSA America, Inc. Provided by IHS under license with CSA/AM Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-The Canadian Standards Association (CSA), under whose auspices
7、 this National Standard has been produced, was chartered in 1919 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a not-for-profit, nonstatutory, voluntary membership association engaged in standards development and certification activities.CSA standa
8、rds reflect a national consensus of producers and users including manufacturers, consumers, retailers, unions and professional organizations, and governmental agencies. The standards are used widely by industry and commerce and often adopted by municipal, provincial, and federal governments in their
9、 regulations, particularly in the fields of health, safety, building and construction, and the environment.Individuals, companies, and associations across Canada indicate their support for CSAs standards development by volunteering their time and skills to CSA Committee work and supporting the Assoc
10、iations objectives through sustaining memberships. The more than 7000 committee volunteers and the 2000 sustaining memberships together form CSAs total membership from which its Directors are chosen. Sustaining memberships represent a major source of income for CSAs standards development activities.
11、The Association offers certification and testing services in support of and as an extension to its standards development activities. To ensure the integrity of its certification process, the Association regularly and continually audits and inspects products that bear the CSA Mark.In addition to its
12、head office and laboratory complex in Toronto, CSA has regional branch offices in major centres across Canada and inspection and testing agencies in eight countries. Since 1919, the Association has developed the necessary expertise to meet its corporate mission: CSA is an independent service organiz
13、ation whose mission is to provide an open and effective forum for activities facilitating the exchange of goods and services through the use of standards, certification and related services to meet national and international needs.LAssociation canadienne de normalisation (CSA), sous les auspices de
14、laquelle cette Norme nationale a t prpare, a reu ses lettres patentes en 1919 et son accrditation au sein du Systme de Normes nationales par le Conseil canadien des normes en 1973. Association daffiliation libre, sans but lucratif ni pouvoir de rglementation, elle se consacre llaboration de normes e
15、t la certification.Les normes CSA refltent le consensus de producteurs et dusagers de partout au pays, au nombre desquels se trouvent des fabricants, des consommateurs, des dtaillants et des reprsentants de syndicats, de corps professionnels et dagences gouvernementales. Lutilisation des normes CSA
16、est trs rpandue dans lindustrie et le commerce, et leur adoption divers ordres de lgislation, tant municipal et provincial que fdral, est chose courante, particulirement dans les domaines de la sant, de la scurit, du btiment, de la construction et de lenvironnement.Les Canadiens dun bout lautre du p
17、ays tmoignent de leur appui au travail de normalisation men par la CSA en participant bnvolement aux travaux des comits de la CSA et en appuyant ses objectifs par leurs cotisations de membres de soutien. Les quelque 7000 volontaires faisant partie des comits et les 2000 membres de soutien constituen
18、t lensemble des membres de la CSA parmi lesquels ses administrateurs sont choisis. Les cotisations des membres de soutien reprsentent une source importante de revenu pour les services de soutien la normalisation volontaire.LAssociation offre des services de certification et de mise lessai qui appuie
19、nt et compltent ses activits dans le domaine de llaboration de normes. De manire assurer lintgrit de son processus de certification, lAssociation procde de faon rgulire et continue lexamen et linspection des produits portant la marque CSA.Outre son sige social et ses laboratoires Toronto, la CSA pos
20、sde des bureaux rgionaux dans des centres vitaux partout au Canada, de mme que des agences dinspection et dessai dans huit pays. Depuis 1919, lAssociation a parfait les connaissances techniques qui lui permettent de remplir sa mission dentreprise, savoir la CSA est un organisme de services indpendan
21、t dont la mission est doffrir une tribune libre et efficace pour la ralisation dactivits facilitant lchange de biens et de services par lintermdiaire de services de normalisation, de certification et autres, pour rpondre aux besoins de nos clients, tant lchelle nationale quinternationale.Canadian St
22、andards AssociationFor further information on CSA services, write toCanadian Standards Association5060 Spectrum Way, Suite 100, Mississauga, Ontario,Canada L4W 5N6Pour plus de renseignements sur les services dela CSA, sadresser Association canadienne de normalisation5060, Spectrum Way, bureau 100Mis
23、sissauga, Ontario, Canada L4W 5N6Copyright CSA America, Inc. Provided by IHS under license with CSA/AM Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-American National Standards InsitituteResponsibility of approving American National Standards rests with theAmeric
24、an National Standards Institute, Inc.25 West 43rd Street, Fourth FloorNew York, NY10036The American National Standards Institute (ANSI), Inc. is the nationally recognized coordinator of voluntary standards development in the United States through which voluntary organizations, representing virtually
25、 every technical discipline and every facet of trade and commerce, organized labor and consumer interests, establish and improve the some 10,000 national consensus standards currently approved as American National Standards.ANSI provides that the interests of the public may have appropriate particip
26、ation and representation in standardization activity, and cooperates with departments and agencies of U.S. Federal, state and local governments in achieving compatibility between government codes and standards and the voluntary standards of industry and commerce.ANSI represents the interests of the
27、United States in international nontreaty organizations such as the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). The Institute maintains close ties with regional organizations such as the Pacific Area Standards Congress (PASC) and the P
28、an American Standards Commission (COPANT). As such, ANSI coordinates the activities involved in the U.S. participation in these groups.ANSI approval of standards is intended to verify that the principles of openness and due process have been followed in the approval procedure and that a consensus of
29、 those directly and materially affected by the standards has been achieved. ANSI coordination is intended to assist the voluntary system to ensure that national standards needs are identified and met with a set of standards that are without conflict or unnecessary duplication in their requirements.C
30、opyright CSA America, Inc. Provided by IHS under license with CSA/AM Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-PrefaceThis publication represents a basic standard for safe operation, substantial and durable construction, and acceptable performance of gas appl
31、iance pressure regulators. It is the result of years of experience in the manufacture, testing, installation, maintenance, inspection and research on gas appliance pressure regulators designed for utilization of gas. There are risks of injury to persons inherent in appliances that, if completely eli
32、minated, would defeat the utility of the appliance. The provisions in this standard are intended to help reduce such risks while retaining the normal operation of the appliance.Nothing in this standard is to be considered in any way as indicating a measure of quality beyond compliance with the provi
33、sions it contains. It is designed to allow compliance of gas appliance pressure regulators, the safety construction and performance of which may exceed the various provisions specified herein. In its preparation, full recognition has been given to possibilities of improvement through ingenuity of de
34、sign. As progress takes place, revisions may become necessary. When they are believed desirable, recommendations or suggestions should be forwarded to the CSA America, 8501 East Pleasant Valley Road, Cleveland, Ohio 44131, or the Chairman of the CSA Technical Committee on Gas Appliances and Related
35、Accessories, 5060 Spectrum Way, Suite 100, Missiaaauga, Ontario, Canada L4W 5N6.Safe and satisfactory operation of a gas appliance pressure regulator depends to a great extent upon its proper installation, use and maintenance. It should be installed, as applicable, in accordance with the National Fu
36、el Gas Code, ANSI Z223.1/NFPA 54; or the Natural Gas and Propane Installation Code, CSA B149.1.Users of this American National Standard/CSA Standard are advised that the devices, products and activities within its scope may be subject to regulation at the Federal, Territorial, Provincial, state or l
37、ocal level. Users are strongly urged to investigate this possibility through appropriate channels. In the event of a conflict with this standard, the Federal, Territorial, Provincial, state or local regulation should be followed.THIS STANDARD IS INTENDED TO BE USED BY THE MANUFACTURING SECTOR AND BY
38、 THOSE APPLYING THE EQUIPMENT AND BY THOSE RESPONSIBLE FOR ITS PROPER INSTALLATION. IT IS THE RESPONSIBILITY OF THESE USERS TO DETERMINE THAT IN EACH CASE THIS STANDARD IS SUITABLE FOR AND APPLICABLE TO THE SPECIFIC USE THEY INTEND.CAUTION NOTICE: This American National Standard may be revised or wi
39、thdrawn at any time. The procedures of the American National Standards Institute, Inc., require that action be taken to reaffirm, revise or withdraw this standard no later than five (5) years from the date of approval. Purchasers of American National Standards may receive current information on all
40、standards by calling or writing the American National Standards Institute, Inc., 25 West 43rd Street, Fourth Floor, New York, N.Y. 10036, (212) 642-4900.EFFECTIVE DATE: An organization using this standard for product evaluation as a part of its certification program will normally establish the date
41、by which all products certified by that organization should comply with this standard.Copyright CSA America, Inc. Provided by IHS under license with CSA/AM Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-iiHistory Of The Development Of Standard For Gas Appliance Pr
42、essure Regulators(This History is informative and is not part of the standard.)With the onset of the Free Trade Agreement between the United States and Canada on January 2, 1988, significant attention was given to the harmonization of the United States and Canadian safety standards addressing gas-fi
43、red equipment for residential, commercial and industrial applications. It was believed that the elimination of the differences between the standards would remove potential trade barriers and provide an atmosphere in which North American manufacturers could market more freely in the United States and
44、 Canada. The harmonization of these standards was also seen as a step toward harmonization with international standards.With the formation of joint subcommittees, a Canadian Gas Association Standards Steering Committee on Gas Burning Appliances and Related Accessories was established to parallel Acc
45、redited Standards Committees Z21 and Z83, and to support the formation of joint subcommittees. Operating procedures, in accordance with American National Standards Institute procedures, for joint subcommittees were developed and subsequently approved by ANSI on April 1, 1993.At its July 14, 1993 mee
46、ting, the Joint Automatic Gas Controls Subcommittee adopted ANSI Z21.18 for distribution for review and comment as a harmonized standard, in that Z21.18 and CAN1-6.3 were identical in content. The first draft harmonized gas appliance pressure regulator standard was distributed for review and comment
47、 during March 1994.Following reconsideration and modification of the proposed harmonized draft standard for gas appliance pressure regulators, in light of comments received, the joint automatic gas controls subcommittee, at its July 14, 1994 meeting, recommended the proposed standard to the Z21 Comm
48、ittee and the CGA Standards Steering Committee, for approval.The proposed harmonized standard for gas appliance pressure regulators was approved by the Z21 Committee by letter ballot dated January 17, 1995. The CGA Standards Steering Committee approved the proposed harmonized standard for automatic
49、gas valves by letter ballot dated April 13, 1995.The first edition of the harmonized Z21/CGA Standard for Gas Appliance Pressure Regulators was approved by the Canadian Interprovincial Gas Advisory Council on October 18, 1995 and by the American National Standards Institute, Inc., on November 15, 1995.The second edition of the harmoniz
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