1.1 本规范涵盖了使用标称SDR9交联聚乙烯（PEX）管作为系统进行测试时系统组件的要求、测试方法和标记要求。系统适用于100 psi（0.69 MPa）的供水，最高工作温度为180℃ 华氏度（82 °C）。包括材料、工艺、尺寸和公差、爆破压力、静水持续压力、过高温度和压力、耐腐蚀性和热循环试验的要求和试验方法。本规范涵盖的部件拟用于但不限于住宅和商业冷热水饮用水分配系统或其他应用，如再生水、消防、市政供水管线、辐射供暖和冷却系统、循环水分配系统、冰雪融化系统、地热地面回路、区域供暖、，草坪调节、压缩空气分配和建筑服务管道。 1.2 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。 1.3 以英寸-磅为单位的数值应视为标准值。括号中的数值仅供参考。 注1: 管道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、组装和安装注意事项 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 . 有关高温非饮用水应用和氯化饮用水使用PEX管的更多信息，请分别参见PPI技术说明52和53。 1.4 以下安全隐患警告仅适用于试验方法部分第节 7. ，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。 1.5 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, and marking requirements for system components when tested with nominal SDR9 crosslinked polyethylene (PEX) tubing as a system. Systems are intended for 100 psi (0.69 MPa) water service up to and including a maximum working temperature of 180 °F (82 °C). Requirements and test methods are included for materials, workmanship, dimensions and tolerances, burst pressure, hydrostatic sustained pressure, excessive temperature and pressure, corrosion resistance, and thermocycling tests. The components covered by this specification are intended for use in, but not limited to, residential and commercial hot and cold potable water distribution systems or other applications such as reclaimed water, fire protection, municipal water service lines, radiant heating and cooling systems, hydronic distribution systems, snow and ice melting systems, geothermal ground loops, district heating, turf conditioning, compressed air distribution, and building services pipe. 1.2 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. 1.3 The values stated in inch-pound units are to be regarded as the standard. The values stated in parentheses are provided for information only. Note 1: Suggested hydrostatic design stresses and hydrostatic pressure ratings for tubing and fittings are listed in Appendix X1 . Design, assembly, and installation considerations are discussed in Appendix X2 . An optional performance qualification and an in-plant quality control program are recommended in Appendix X3 . For additional information on the use of PEX tubing for high-temperature non-potable applications and for chlorinated potable water, see PPI Technical Notes 52 and 53, respectively. 1.4 The following safety hazards caveat pertains only to the test method portion, Section 7 , 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. 1.5 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.