ISO 1452-3:2009规定了用于供水和埋地和地下排水和压力下水管道系统的未增塑聚氯乙烯（PVC-U）制成的配件的特性。它还指定了所参考的测试方法的测试参数。 结合ISO 1452-1，ISO 1452-2和ISO 1452-5，它适用于PVC的U型接头和与PVC的部件的接头，其他塑料和非塑料材料旨在用于下列: - 水管和埋在地下的服务; - 在建筑物外部和内部输送地上水; - 在压力下埋地和地上排水和污水。 它适用于管道系统中的配件，用于在压力达到并包括25°C（冷水）的水中供水，用于人类消费和一般用途以及压力下的废水。它也适用于运输水和包括45°C的废水的组件

ISO 1452-3:2009 specifies the characteristics of fittings made from unplasticized poly(vinyl chloride) (PVC‑U) for piping systems intended for water supply and for buried and above ground drainage and sewerage under pressure. It also specifies the test parameters for the test methods referred to. In conjunction with ISO 1452-1, ISO 1452-2 and ISO 1452-5, it is applicable to PVC‑U fittings and to joints with components of PVC‑U, other plastics and non-plastics materials intended to be used for the following: - water mains and services buried in the ground; - conveyance of water above ground for both outside and inside buildings; - buried and above ground drainage and sewerage under pressure. It is applicable to fittings in piping systems intended for the supply of water under pressure up to and including 25 °C (cold water), intended for human consumption and for general purposes as well as for waste water under pressure. It is also applicable to components for the conveyance of water and waste water up to and including 45 °C.