SIST EN ISO 5640:2025 PDF

This document provides requirements for metallic mounting kits for part-turn valves and actuator attachments. It includes all components transmitting torques from actuators to valves with a maximum flange torque up to 16 000 Nm (up to F30 flange type). It applies to mounting kits for part-turn valves and actuators with integral attachment flanges and drive components as described in ISO 5211, when direct mounting of the actuator on valve is not practical. Stacking of mounting kits/intermediate supports is not within the scope of this document. This document specifies methods for design and environmental corrosion protection. When a reference is made to this document, all the requirements apply, unless otherwise agreed between the purchaser and the manufacturer/supplier, prior to order. In this document, the term "valve" covers valve or shaft extension top-flange, and the term “actuator” covers part-turn actuator or combination of multi-turn actuator and gearbox. Control valves are excluded from this document.