This document specifies requirements and acceptance criteria for type testing, consistent with design conditions, of metal ball valves and metal butterfly valves used for shut-off services for all industrial applications, and serves to validate product design over 205 cycles. This document excludes testing of safety devices, control valves, valves made of thermoplastic materials, and valves for the supply of water intended for human consumption and waste water (e.g. EN 1074 series). This document defines the procedure for extending the qualification of the valve tested to include dimension and pressure designations not tested in the same product range. The purpose of this type test is to validate the seat performance for the pressure/temperature relationship specified by the manufacturer, which appears in the technical documentation of the product given by the manufacturer. This type test verifies the torque requirements and the maximum allowable operating torque (MAST), as given in the manufacturer's technical documentation. This type test validates the durability of seat performance and operating torque through mechanical and thermal cycling.
EN ISO 23632:2022 history
2022EN ISO 23632:2022 Industrial valves - Design validation-testing of valves (ISO 23632:2021)