1.1 本规范涵盖了带有工厂组装不锈钢压套的塑料压入配件，其中包括3个观察孔和一个工具定位环。这些配件适用于标称尺寸的交联聚乙烯（PEX）管 3. / 8. , 1. / 2. , 3. / 4. , 1, 1 1. / 4. 1. 1. / 2. ，和2符合规范要求 第876页 或 F3253英镑 以及与标称尺寸的高温聚乙烯（PE-RT）管道一起使用 3. / 8. , 1. / 2. , 3. / 4. , 1, 1 1. / 4. 1. 1. / 2. ，和2符合规范要求 第2769页 这些配件适用于100 psi（690 kPa）的冷水和热水分配系统，温度高达180 华氏度（82 °C）。包括材料、模制件财产、性能、工艺、尺寸和配件和套管上使用的标记的要求。 1.1.1 根据规范与PEX卡套管一起使用时 第876页 ，本规范所涵盖的配件旨在用于但不限于住宅和商业、冷热饮用水分配系统、供水线路、建筑供水线路、再生水、消防、辐射供暖和制冷系统、水力分配系统、冰雪融化系统、地热地面回路、区域供暖、，草坪空调、压缩空气分配和建筑服务管道。 1.1.2 根据规范与PEX卡套管一起使用时 F3253英镑 ，本规范所涵盖的配件适用于住宅和商业循环供暖和制冷系统。 1.1.3 根据规范与PE-RT卡套管一起使用时 第2769页 ，本规范所涵盖的配件适用于住宅和商业、高温- 以及冷饮用水分配系统和建筑供应管线。 1.2 单位- 以英寸磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。

1.1 This specification covers plastic press insert fittings with factory assembled stainless steel press sleeves incorporating 3 view holes and a tool locator ring. These fittings are for use with cross-linked polyethylene (PEX) tubing in nominal sizes 3 / 8 , 1 / 2 , 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 (690 kPa) cold- and hot-water distribution systems operating at temperatures up to and including 180 °F (82 °C). Included are the requirements for material, molded part properties, performance, workmanship, dimensions, and markings to be used on the fittings and sleeves. 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.