热塑性塑料阀门.疲劳强度.试验方法

[中文适用范围]： 本文件规定了确认手动塑料阀门承受长期使用、反复打开和关闭的能力所必需的耐久性测试。 它没有规定阀门承受不利条件的能力，特别是化学侵蚀性流体介质和/或环境，或过高的流体速度和空化。 注：关于材料的化学侵蚀，ISO/TR 10358[1]中报告了分类表。 本文件包括正常进行耐久性测试所需的参数值，但保留参数在特定产品标准中有所不同（见 5.1）。 [外文原描述]： This document specifies the endurance test necessary to confirm the ability of hand-operated plastics valves to withstand prolonged use, with repeated opening and closure. It does not specify the ability of valves to withstand adverse conditions, in particular those of chemically aggressive fluid media and/or environments, or excessive fluid velocities and cavitation. NOTE Concerning the chemical aggression of the materials, a classification table is reported in ISO/TR 10358 [1] . This document includes values of the parameters necessary for the proper performance of the endurance test, with the reservation that the parameters are different in particular product standards (see 5.1).