1.1 本规范涵盖与标称管道尺寸（NTS）的交联聚乙烯（PEX）管道一起使用的金属插入配件和铜压接环或备用不锈钢夹 3. / 8. , 1. / 2. , 5. / 8. , 3. / 4. , 1, 1 1. / 4. 1. 1. / 2. 和2个符合规范要求的标称尺寸 第876页 或规格 第3253页 ，或与NTS中的高温聚乙烯（PE-RT）管一起使用 3. / 8. , 1. / 2. , 5. / 8. , 3. / 4. , 1, 1 1. / 4. 1. 1. / 2. 和2个符合规范要求的标称尺寸 623年 或规格 769年 这些配件适用于100 psi（689.5 kPa）的冷水和热水分配系统，该系统的温度最高为180℃（含180℃） °F（82 °C）。 1.1.1 根据规范与PEX管一起使用时 第876页 ，本规范所涵盖的配件适用于但不限于住宅和商业、冷热饮用水分配系统、再生水、消防、市政供水管线、建筑供水管线、辐射供暖和冷却系统、循环水分配系统，融雪和融冰系统、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。 1.1.2 根据规范与PEX管一起使用时 第3253页 ，本规范涵盖的配件适用于住宅和商业循环加热和冷却系统。 1.1.3 根据规范与PE-RT管一起使用时 769年 ，本规范涵盖的配件适用于住宅和商业、冷热饮用水分配系统以及建筑供水管线。 1.1.4 根据规范与PE-RT管一起使用时 623年 ，本规范涵盖的配件适用于一般流体输送，包括水力和灌溉系统。 1.1.5 还包括配件和环上使用的材料、工艺、尺寸和标记要求。 注1: 其他规范和监管要求可能适用于特定应用的配件。 1.2 以英寸-磅单位表示的值应视为标准值。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准。 1.3 符合本规范要求对这些配件进行测试并根据规范进行认证 第877页 或规格 第3253页 当与PEX管材和规范一起使用时 769年 或规格 623年 当与PE-RT管一起使用时。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前建立适当的安全、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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers metal insert fittings and copper crimp rings, or alternate stainless steel clamps, for use with cross-linked polyethylene (PEX) tubing in Nominal Tubing Size (NTS) 3 / 8 , 1 / 2 , 5 / 8 , 3 / 4 , 1, 1 1 / 4 , 1 1 / 2 , and 2 nominal sizes that meet the requirements for Specification F876 or Specification F3253 , or for use with polyethylene of raised temperature (PE-RT) tubing in NTS 3 / 8 , 1 / 2 , 5 / 8 , 3 / 4 , 1, 1 1 / 4 , 1 1 / 2 , and 2 nominal sizes that meet the requirements of Specification F2623 or Specification F2769 . These fittings are intended for use in 100 psi (689.5 kPa) cold- and hot-water distribution systems operating at temperatures up to, and including, 180 °F (82 °C). 1.1.1 When used with PEX tubing in accordance with Specification F876 , the fittings covered by this specification are intended for use in, but not limited to, residential and commercial, hot- and cold-potable water distribution systems, reclaimed water, fire protection, municipal water service lines, building supply 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. 1.1.2 When used with PEX tubing in accordance with Specification F3253 , the fittings covered by this specification are intended for use in residential and commercial hydronic heating and cooling systems. 1.1.3 When used with PE-RT tubing in accordance with Specification F2769 , the fittings covered by this specification are intended for use in residential and commercial, hot- and cold-potable water distribution systems, and building supply lines. 1.1.4 When used with PE-RT tubing in accordance with Specification F2623 , the fittings covered by this specification are intended for use in general fluid transport, including hydronics and irrigations systems. 1.1.5 The requirements for materials, workmanship, dimensions, and markings to be used on the fittings and rings are also included. Note 1: Other code and regulatory requirements may apply to fittings for specific applications. 1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units which are provided for information only and are not considered the standard. 1.3 Compliance with this specification requires that these fittings be tested and certified to Specification F877 or Specification F3253 when used with PEX tubing and Specification F2769 or Specification F2623 when used with PE-RT tubing. 1.4 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.