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Thermoplastics valves - Fatigue strength - Test method
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).
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