序言这是CSA/ANSI Z21的第三版。15 CSA 9.1，家用电器用手动燃气阀、家用电器连接阀和软管端阀。它取代了2009年和1997年出版的前两个版本。本标准第三版已更新，以反映当前的行业惯例，并符合CSA集团的标准起草指南。本版本的主要变化包括:a）第1.2条将1/2 psi更改为72 psi；b） 附录A和附录b已纳入本标准； andc）增加了不可置换阀门构件的语言。本标准适用于本标准规定范围内的合格评定。本标准的制定符合加拿大标准委员会对加拿大国家标准的要求。CSA集团已将其作为加拿大国家标准发布。本标准已被美国国家标准协会（ANSI）批准为美国国家标准。范围1。1本标准适用于管道尺寸不超过4英寸（102毫米）的手动燃气阀，以下简称阀门，以及先导关闭- 非使用设备，以下简称由全新的未使用部件和材料制成的设备。除了不打算永久连接到软管的软管端阀和设备连接阀外，这些阀门和设备打算用作燃气设备的一部分。本标准不适用于燃气表出口下游和燃气器具连接阀上游地面燃气管道中使用的手动燃气阀。这些阀门包含在CSA 9中。 4和ASME B16。44.1.2本标准适用于与天然气和丙烷气体一起使用的阀门和装置，除非本标准中另有规定，在最大工作压力为1/2 psi且不超过72 psi（496 kPa）的情况下。1.3不用于永久连接的软管端阀仅限于1/2 psi（3.45 kPa）。1.4本标准适用于能够在32°F（0°C）至125°F（51.5°C）的环境温度下运行的阀门和装置，除非温度较高或较低，由制造商规定（见第5条）。 1.2）.1.5阀门可以是单独的阀门，也可以作为装置的一部分，包括控制主燃烧器气体的其他方式，此类装置的部件执行本标准以外的功能，符合适用的美国国家标准或加拿大标准。1.6符合本标准并不意味着此类阀门或装置可用于燃气器具，无需对应用于特定器具设计的阀门或装置进行补充试验。 1.7如果本标准中给出的测量阀门后面有其他单位的等效值，则第一个规定值应视为规范值。1.8除非另有规定，否则本标准中提及的所有psi均应视为表压。1.9在本标准中，“应”用于表示要求，即用户为遵守本标准而有义务满足的规定；“应该”用于表示建议或建议但不需要的建议； “可”用于表示一个选项或在标准范围内允许的选项。注释随附条款不包括要求或替代要求；随附条款的注释的目的是将解释性或信息性材料与文本分开。表和图的注释被视为表或图的一部分，可以作为要求编写。附件被指定为规范性（强制性）或信息性（非强制性）以定义其应用。 1.10关于单位换算，见附录A。

PrefaceThis is the third edition of CSA/ANSI Z21.15  CSA 9.1, Manually operated gas valves for appliances, appliance connector valves and hose-end valves. It supersedes the previous editions published in 2009 and 1997.The third edition of this Standard has been updated to reflect current industry practice and address CSA Group's guide on drafting Standards. Major changes to this edition include the following:a) Clause 1.2 includes a change of 1/2 psi to 72 psi;b) Addenda A and B have been incorporated into this Standard; andc) language has been added for non-displaceable valve members.This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. This Standard has been approved by the American National Standards Institute (ANSI) as an American National Standard.Scope1.1 This Standard applies to manually operated gas valves, hereinafter referred to as valves, not exceeding 4 in (102 mm) pipe size, and pilot shut-off devices, hereinafter referred to as devices constructed of entirely new unused parts and materials. Except for hose-end valves not intended for permanent connection to a hose, and appliance connector valves, these valves and devices are intended to be used as part of a gas-fired appliance. This Standard does not apply to manually operated gas valves for use in above-ground fuel gas piping downstream of the gas meter outlet and upstream of the gas appliance connector valve. These valves are covered in CSA 9.4 and ASME B16.44.1.2 This Standard applies to valves and devices for use with natural and propane gases, unless otherwise stated within this Standard, at maximum operating pressures of 1/2 psi and up to and including 72 psi (496 kPa).1.3 Hose-end valves not intended for permanent connection are limited to 1/2 psi (3.45 kPa).1.4 This Standard applies to valves and devices capable of operation at ambient temperatures of 32 °F (0 °C) to 125 °F (51.5 °C), unless a higher temperature, lower temperature, or both, are specified by the manufacturer (see Clause 5.1.2).1.5 A valve may be an individual valve or may be incorporated as part of a device that includes other means to control main burner gas, with the components of such a device performing a function other than that covered by this Standard complying with the applicable American National Standard(s) or Canadian Standard(s).1.6 Compliance with this Standard does not imply that such valve or device is acceptable for use on gas appliances without supplemental tests with the valve or device applied to the particular appliance design.1.7 If a valve for measurement as given in this Standard is followed by an equivalent value in other units, the first stated value is to be regarded as the specification.1.8 All references to psi throughout this Standard are to be considered gauge pressures, unless otherwise specified.1.9 In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.1.10 For conversion of units, see Annex A.