ISO 8659:2020 PDF

Scope: 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).

ISO 8659:2020 Referenced Document

ISO 161-1 Thermoplastics pipes for the conveyance of fluids — Nominal outside diameters and nominal pressures — Part 1: Metric series — Amendment 1*， 2023-04-01 Update
ISO 16135 Industrial valves — Ball valves of thermoplastics materials AMENDMENT 1
ISO 16136 Industrial valves — Butterfly valves of thermoplastics materials AMENDMENT 1
ISO 16138 Industrial valves — Diaphragm valves of thermoplastics materials AMENDMENT 1
ISO 16139 Industrial valves — Gate valves of thermoplastics materials AMENDMENT 1
ISO 21787 Industrial valves — Globe valves of thermoplastics materials AMENDMENT 1