Specifies a method for testing the fatigue strength and performance of thermoplastic valves incorporated in a valve assembly with its obturator mechanism under pressure. Repeated opening and closing shall be performed for as many cycles and using the torque as specified by the particular product standard.
Status: WithdrawnPublication date: 1989-06
Edition: 1Number of pages: 2
Technical Committee: ISO/TC 138/SC 7 Valves and auxiliary equipment of plastics materials
ISO 8659:1989Stage: 95.99
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