ISO - International Organization for Standardization
No. of pages: 2
ISO 8659 - Thermoplastics valves -- Fatigue strength -- Test method
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.
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