用于热塑性塑料管道系统中压力下热水和冷水安装的球阀 类型、尺寸和要求

[中文适用范围]： 本文件适用于由所有类型的聚丙烯（PP）和氯化聚氯乙烯（PVC-C）热塑性材料制造的二通或多通球阀，用于输送加压水（无论是否拟用于人类饮用（家用系统）），适用于建筑物和公用事业分支中的应用。注1：二通阀通常用于分段和控制流量，多通阀用于分流或混合流量。有关其功能性的信息，请参见ISO 16135:2006，附录B。注2：本文件的读者须知，拟用于人类饮用的水受国家、区域或地方法规规定的约束。应用等级在ISO 15874和ISO 15877系列中指明。本文件规定了阀门特性如下：相关管道中的装配尺寸、物理和机械要求。如果应用等级在材料相关的特定标准中规定，其他材料也可符合本文件的范围。本文件中规定的球阀不拟与金属材料和铜合金制成的管道一起使用。 [外文原描述]： This document is applicable to two-way or multi-way ball valves manufactured with all types of polypropylene (PP) and chlorinated polyvinylchloride (PVC-C) thermoplastic materials to be used for the transport of pressurized water whether or not intended for human consumption (domestic systems) for applications in buildings and utility branches. NOTE 1 The two-way valve is generally used for sectioning and control of flows, and the multi-way valve is used to divert or mix the flows. For information on their functionality, see ISO 16135:2006, Annex B. NOTE 2 The reader of this document is informed that the water intended for human consumption is subjected to national, regional or local regulatory provisions as applicable. The application classes are indicated in ISO 15874 and ISO 15877 series. This document specifies valve characteristics as follows: — dimensions for assembly in the relevant pipelines, — physical and mechanical requirements. Other materials can fit the scope of this document if the application classes are specified in a material related specific standard. Ball valves specified in this document are not intended to be used in conjunction with pipes made by metallic material and copper alloys.