1.1 本规范涵盖铜合金金属冲压插入件，带有工厂组装的不锈钢冲压套筒，包括3个观察孔和工具定位环。这些配件用于标称尺寸的交联聚乙烯（PEX）管 5. / 16 , 3. / 8. , 1. / 2. , 5. / 8. , 3. / 4. , 1, 1 1. / 4. 1. 1. / 2. 和2满足规范要求 第876页 或 第3253页 用于标称尺寸的高温聚乙烯（PE-RT）管 3. / 8. , 1. / 2. , 3. / 4. , 1, 1 1. / 4. 1. 1. / 2. 和2满足规范要求 769年 这些配件适用于100 psi（689.5 kPa）的热水和冷水分配系统，该系统的温度最高为180℃（含180℃） °F（82 °C）。还包括配件和套管上使用的材料、工艺、尺寸和标记要求。 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、供水管线、建筑供水管线、再生水、消防、辐射供暖和冷却系统、循环分配系统、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- 以及冷饮用水分配系统和建筑物供应管线。 1.2 单位- 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，不被视为标准值。 1.3 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。 1.4 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 copper alloy metal press insert fittings with factory assembled stainless steel press sleeves incorporating 3 view holes and tool locator ring. These fittings are for use with cross-linked polyethylene (PEX) tubing in nominal sizes 5 / 16 , 3 / 8 , 1 / 2 , 5 / 8 , 3 / 4 , 1, 1 1 / 4 , 1 1 / 2 , and 2 that meet the requirements for Specification F876 or F3253 and for use with polyethylene of raised temperature (PE-RT) tubing in nominal sizes 3 / 8 , 1 / 2 , 3 / 4 , 1, 1 1 / 4 , 1 1 / 2 , and 2 that meet the requirements of Specification F2769 . These fittings are intended for use in 100 psi (689.5 kPa) hot and cold water distribution systems operating at temperatures up to, and including, 180 °F (82 °C). The requirements for materials, workmanship, dimensions, and markings to be used on the fittings and sleeves are also included. 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, water service lines, building supply lines, reclaimed water, fire protection, 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. 1.2 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 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. 1.4 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.