Withdrawn
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.
                    WITHDRAWN
                    ISO 8659:1989
                    95.99
                                        Withdrawal of Standard
                    Apr 3, 2020
                
                PUBLISHED
                                    ISO 8659:2020