Overview
ISO 5640:2024 - Industrial valves - Mounting kits for part-turn valve actuator attachment defines requirements for metallic mounting kits used to connect part-turn actuators (or a multi-turn actuator + gearbox) to part-turn valves when direct actuator-to-valve mounting is impractical. The standard covers all components that transmit torque from actuators to valves up to 16 000 Nm (up to F30 flange type). Control valves and stacking of multiple mounting kits are excluded.
Key scope points:
- Applies to mounting kits (intermediate support, bolting, optional coupling) for part-turn actuator attachment interfaces described in ISO 5211.
- Requires agreement between purchaser and manufacturer if any deviations from the standard are needed before order.
Key topics and technical requirements
ISO 5640:2024 sets out practical design and documentation requirements including:
- Materials
- Intermediate supports: cast iron (CI), ductile iron (DI), carbon steel (CS), stainless steel (SS) or agreed alternatives.
- Bolting: selection tied to environmental corrosion categories (C2–CX); stainless steel required for higher categories.
- Torque capacity
- Covers flange torques up to 16 000 Nm (F30 flange type).
- Design temperature
- Minimum operational design range: −20 °C to 60 °C (other ranges by agreement).
- Environmental corrosion protection
- Material selection and surface treatments to meet corrosion categories (C2–CX, Im1/Im2 for water/soil).
- Manufacturer must document corrosion protection choices; test procedures are manufacturer responsibility.
- Mechanical design features
- Intermediate support styles (bracket, spool, adapter flange), stiffness, bolting, coupling types (keys, square/flat heads, splines), coupling clearance (Annex A).
- Position indicators, buried service considerations, orientation, safety and maintenance provisions.
- Marking and documentation
- Mandatory and optional marking information and product documentation requirements.
Applications and who uses it
ISO 5640 is essential for:
- Valve manufacturers and actuator suppliers designing or specifying mounting kits.
- Mechanical designers and piping/plant engineers integrating actuators with part-turn valves (ball, butterfly, plug types).
- Procurement and quality assurance personnel specifying contract requirements for valve-actuator packages.
- Service and maintenance teams requiring documented dimensions, bolting, and corrosion-protection details.
Typical use cases:
- Plants where direct actuator mounting is impractical (access, alignment, custom interfaces).
- Projects requiring standardized torque transmission interfaces, documented corrosion protection, and traceability.
Related standards
- ISO 5211 - Part-turn actuator attachments (primary interface reference)
- ISO 22153, ISO 22109 - Related actuator/gearbox guidance (electric actuators/gearboxes)
- ISO 630-1 - Surface treatment systems (for corrosion protection)
Keywords: ISO 5640:2024, industrial valves, mounting kits, part-turn actuator, ISO 5211, flange torque, environmental corrosion protection, coupling clearance.