1.1 本规范涵盖了按一个标准尺寸比制造的用于180°F（82°C）及以下供水的氯化聚氯乙烯塑料冷热水分配系统部件的要求、测试方法、组装和标记方法。这些组件包括管道、承插式配件、街道配件、塑料到金属过渡配件、溶剂粘合剂和粘合剂。试验要求和方法包括材料、工艺、尺寸和公差、静水持续压力强度和热循环阻力。本规范涵盖的部件拟用于住宅和商业、冷热饮用水分配系统。 1.2 本规范涵盖的产品仅用于分配与管道材料化学相容的加压液体。由于与使用压缩空气或其他压缩气体测试组件和系统相关的固有危险，一些制造商不允许对其产品进行气动测试。在气动测试之前，咨询特定产品/组件制造商，了解其特定测试程序。 注1: 加压（压缩）空气或其他压缩气体含有大量储存的能量，如果系统因任何原因发生故障，则会造成严重的安全隐患。 1.3 本规范的文本参考了提供解释材料的注释、脚注和附录。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本规范的要求。 1.4 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 注2: 管道、管子和配件的建议静水压设计应力和静水压额定值列于 附录X1 . 中讨论了设计和安装注意事项 附录X2 . 推荐采用可选的性能鉴定和厂内质量控制程序 附录X3 . 1.5 以下安全危险警告仅适用于试验方法部分，章节 9 和 10 ，本规范: 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers requirements, test methods, assembly, and methods of marking for chlorinated poly(vinyl chloride) plastic hot- and cold-water distribution system components made in one standard dimension ratio and intended for water service up to and including 180 °F (82 °C). These components comprise pipe and tubing, socket-type fittings, street fittings, plastic-to-metal transition fittings, solvent cements, and adhesives. Requirements and methods of test are included for materials, workmanship, dimensions and tolerances, hydrostatic sustained pressure strength, and thermocycling resistance. The components covered by this specification are intended for use in residential and commercial, hot and cold, potable water distribution systems. 1.2 The products covered by this specification are intended for use with the distribution of pressurized liquids only, which are chemically compatible with the piping materials. Due to inherent hazards associated with testing components and systems with compressed air or other compressed gases some manufacturers do not allow pneumatic testing of their products. Consult with specific product/component manufacturers for their specific testing procedures prior to pneumatic testing. Note 1: Pressurized (compressed) air or other compressed gases contain large amounts of stored energy which present serious safety hazards should a system fail for any reason. 1.3 The text of this specification references notes, footnotes, and appendixes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Note 2: Suggested hydrostatic design stresses and hydrostatic pressure ratings for pipe, tubing, and fittings are listed in Appendix X1 . Design and installation considerations are discussed in Appendix X2 . An optional performance qualification and an in-plant quality control program are recommended in Appendix X3 . 1.5 The following safety hazards caveat pertains only to the test method portion, Sections 9 and 10 , of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.