规定了耐内压和密封性的试验方法和要求。适用于流体输送用热塑性阀门。第1部分和第2部分中给出的要求适用于用于冷水的阀门。应参考相关产品标准，了解适用于与其他流体和/或其他温度下的流体一起使用的阀门的要求或试验方法。

Specifies the test methods and requirements for the resistance to internal pressure and leaktightness. Applies to thermoplastic valves intended for the transport of fluids. The requirements given in parts 1 and 2 are applicable to valves intended for use with cold water. Reference should be made to the relevant product standards for requirements or test methods applicable to valves intended for use with other fluids and/or fluids at other temperatures.