EN 28659 : 1990现行
METHOD FOR DETERMINATION OF FATIGUE STRENGTH OF THERMOPLASTICS VALVES
出版：Comite Europeen de Normalisation
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基本信息
标准编号： EN 28659 : 1990
标准类别：Standard
出版单位：Comite Europeen de Normalisation
标准页数：0
标准简介
Specifies the test needed to confirm the ability of hand-operated plastics valves to withstand prolonged use, with repeated closure and openings. Does not specify the ability of valves to withstand adverse conditions; particularly those of chemically aggressive fluid media and/or environments, or excessive fluid velocities and cavitation. Includes values of parameters necessary for the proper performance of the endurance test (although parameters may be different in particular product standards).
