范围:本标准惯例规定了CWP等级球阀的要求。本标准实施规程提供了以下要求:压力温度比材料设计尺寸标记测试参考标准和规范本标准实施规程中引用的标准和规范以及赞助组织的名称和地址见附录B。参考每个标准和规范的特定版本是不可行的在个别参考文献中。相反，具体版本参考包含在附录B中。 即使版本参考可能在本标准实施规程的后续版本中更改，符合制造期间适用的版本参考以及在所有其他方面符合本标准实施规程的产品仍将被视为符合本标准实施规程。描述:本标准实施规程中使用的术语球阀是指其闭合构件为球形且在全开和全关之间旋转90度的阀门。典型设计示例和基本零件名称见附录A。

Scope:This Standard Practice establishes requirements for ball valves with CWP ratings. This Standard Practice provides requirements for the following:Pressure-Temperature RatingsMaterialsDesignDimensionsMarkingTestingReferencesStandards and specifications adopted by reference in this Standard Practice and names and addresses of the sponsoring organizations are shown in Annex B. It is not considered practical to refer to a specific edition of each of the standards and specifications in the individual references. Instead, the specific edition references are included in Annex B. A product made in conformance with the edition reference applicable during the time of manufacture, and in all other respects conforming to this Standard Practice, will be considered to be in conformance even though the edition reference may be changed in a subsequent revision of this Standard Practice.Description:The term ball valve as used in this Standard Practice refers to a valve whose closure member is spherical and rotates 90 degrees between full open and full closed. Examples of typical designs and the names of the basic parts are shown in Annex A.