1.1 本指南旨在用于建筑物外使用的热塑性水系统的选择、设计和安装。对于特定项目，建议彻底审查本指南，以选择特定材料、连接方法、系统设计系数和任何被视为确保满意系统所必需的特殊程序。 1.2 建议在使用本指南之前参考适用规范和项目规范。本指南中的任何内容均不得解释为推荐与管理规范和项目规范不一致的做法或系统。 1.3 单位- 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。管道、配件和连接材料应符合下列一个或多个部件产品标准的要求 1.3.1 通过 1.3.3 在适用范围内。这些管道标准遵循( 一 )是外径受控的管道。之后是( b )是内径受控的管道。 1.3.1 对于聚氯乙烯（PVC）塑料管道组件: 规范标题 ASTM标准 任命 聚氯乙烯塑料管，附表40、80 和120( 一 ) D1785 聚氯乙烯塑料管（SDR-PR）( 一 ) D2241 螺纹聚氯乙烯塑料管件， 附表80 D2464 聚氯乙烯塑料管件，一览表 40 D2466 承插式聚氯乙烯塑料管 配件，附表80 D2467 聚氯乙烯塑料管用溶剂胶 和配件 D2564 承口聚氯乙烯管( 一 ) D2672 聚氯乙烯塑料管( 一 ) D2740 插座式聚氯乙烯塑料线 联轴器 D3036 使用柔性弹性体的塑料压力管接头 海豹 D3139页 用于连接塑料管的弹性密封件（垫圈） F477 PVC和ABS注入溶剂胶合塑料管 接头 F545 1.3.2 对于聚乙烯（PE）塑料管道组件: 规范标题 ASTM标准 任命 聚乙烯（PE）塑料管（SDR-PR）( b ) D2239 聚乙烯（PE）塑料管的塑料插入配件 D2609 外径用套筒式聚乙烯管件- 受控聚乙烯管( 一 ) D2683 聚乙烯（PE）塑料管( 一 ) D2737 聚乙烯（PE）塑料管（SDR-PR）基于 控制外径( 一 ) D3035 对接热熔聚乙烯（PE）塑料配件 聚乙烯（PE）塑料管 D3261 1.3.3 对于美国水务工程协会发布的聚氯乙烯（PVC）和聚乙烯（PE）塑料管道组件: C900聚氯乙烯压力管， 4英寸至12英寸，适用于水（a） C901聚乙烯（PE）压力管、管材 和配件， 1. / 2. -英寸到3英寸，用于水 1.3.4 壁厚小于1.50 mm（0.06 in.）的管道不建议使用。 1.4 其他连接装置- 用户可根据自己的工程评估和服务经验选择除所列标准涵盖的连接装置以外的连接装置。 1.5 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 4.1 本规范的要求旨在为建筑物外使用的热塑性水压管道系统的选择、设计和安装提供信息。本规范涵盖的材料为聚氯乙烯（PVC）和聚乙烯（PE）塑料管件。

1.1 This guide is intended for use in the selection, design, and installation of thermoplastic water systems for use outside buildings. For specific projects, a thorough review of this guide is recommended for the purpose of selecting specific materials, methods of joining, system design factor, and any special procedures deemed necessary to assure a satisfactory system. 1.2 It is recommended that governing codes and project specifications be consulted prior to the use of this guide. Nothing in this guide should be construed as recommending practices or systems at variance with governing codes and project specifications. 1.3 Units- 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. The pipe, fittings, and joining materials shall meet the requirements of one or more of the following component product standards listed in 1.3.1 through 1.3.3 to the extent applicable. Those pipe standards followed by ( a ) are outside diameter-controlled pipes. Those followed by ( b ) are inside diameter-controlled pipes. 1.3.1 For poly(vinyl chloride) (PVC) plastic piping components: Title of Specification ASTM Designation Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80 and 120 ( a ) D1785 Poly(Vinyl Chloride) (PVC) Plastic Pipe (SDR-PR) ( a ) D2241 Threaded Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80 D2464 Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40 D2466 Socket-Type Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80 D2467 Solvent Cements for Poly(Vinyl Chloride) (PVC) Plastic Pipe and Fittings D2564 Bell-End Poly(Vinyl Chloride) (PVC) Pipe ( a ) D2672 Poly(Vinyl Chloride) (PVC) Plastic Tubing ( a ) D2740 Socket-Type Poly(Vinyl Chloride) (PVC) Plastic Line Couplings D3036 Joints for Plastic Pressure Pipes Using Flexible Elastomeric Seals D3139 Elastomeric Seals (Gaskets) for Joining Plastic Pipe F477 PVC and ABS Injected Solvent Cemented Plastic Pipe Joints F545 1.3.2 For polyethylene (PE) plastic piping components: Title of Specification ASTM Designation Polyethylene (PE) Plastic Pipe, (SDR-PR) ( b ) D2239 Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe D2609 Socket-Type Polyethylene Fittings for Outside Diameter- Controlled Polyethylene Pipe ( a ) D2683 Polyethylene (PE) Plastic Tubing ( a ) D2737 Polyethylene (PE) Plastic Pipe (SDR-PR) Based on Controlled Outside Diameter ( a ) D3035 Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing D3261 1.3.3 For poly(vinyl chloride) (PVC) and polyethylene (PE) Plastic Piping Components Issued By the American Water Works Association: C900 Poly(Vinyl Chloride) (PVC) Pressure Pipe, 4-inch through 12-inch, for Water (a) C901 Polyethylene (PE) Pressure Pipe, Tubing and Fittings, 1 / 2 -inch through 3-inch, for Water 1.3.4 Pipes with wall thicknesses less than 1.50 mm (0.06 in.) are not recommended. 1.4 Other Joining Devices— Joining devices other than those covered by the listed standards may be selected by the user on the basis of his own engineering evaluation and service experience. 1.5 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== 4.1 The requirements of this specification are intended to provide information to select, design and install thermoplastic, water-pressure piping systems for use outside buildings. Materials covered in this specification are Poly(Vinyl Chloride) (PVC) and Polyethylene (PE) plastic pipe fittings.