ISO 15877-3:20 09规定了由氯化聚氯乙烯（PVC-C）制成的配件的特性，这些配件用于建筑物内用于输送水的热水和冷水装置，无论是否用于人类消费（家用系统），以及根据应用类别在设计压力和温度下用于加热系统。 ISO 15877-3:20 09涵盖了一系列使用条件（应用等级）和设计压力等级。如果设计温度、最高设计温度和故障温度的值超过ISO 15877-1:20 09中给出的值，则不适用。ISO 15877-3:20 09还规定了其参考的试验方法的参数。 与ISO 15877的其他部分一起适用于PVC-C用于热水和冷水装置的配件、其接头和与PVC-C、其他塑料和非塑料材料部件的接头。 它适用于以下类型的配件: 溶剂水泥接缝配件； 机械配件； 带有嵌入式插件的配件。

ISO 15877-3:2009 specifies the characteristics of fittings made from chlorinated poly(vinyl chloride) (PVC-C) for piping systems intended to be used for hot and cold water installations within buildings for the conveyance of water, whether or not intended for human consumption (domestic systems) and for heating systems under design pressures and temperatures according to the class of application. ISO 15877-3:2009 covers a range of service conditions (application classes) and design pressure classes. It does not apply if the values of the design temperature, maximum design temperature and malfunction temperature are in excess of those given in ISO 15877-1:2009. ISO 15877-3:2009 also specifies the parameters for the test methods to which it refers. In conjunction with the other parts of ISO 15877, it is applicable to PVC-C fittings, their joints and joints with components of PVC-C, other plastics and non-plastics materials intended to be used for hot and cold water installations. It is applicable to fittings of the following types:

• fittings for solvent cement joints;
• mechanical fittings;
• fittings with incorporated inserts.