Industrial valves - Actuators - Part 4: Hydraulic part-turn actuators for industrial valves - Basic requirements

This technical document establishes fundamental requirements for hydraulic reversing actuators designed specifically for use in industrial valve systems. It outlines essential performance criteria, safety parameters, and operational guidelines to ensure reliability and consistency across various industrial applications. The scope covers design specifications, testing methodologies, and documentation needs relevant to hydraulic actuation technology within the context of industrial fluid control. By defining uniform standards for construction and functionality, the document facilitates interoperability and quality assurance for equipment manufacturers and end-users. It addresses critical aspects such as pressure ratings, response times, leakage limits, and environmental resilience to support safe and efficient operation in demanding industrial environments. The content serves as a reference for engineering and procurement activities involving hydraulic valve actuators, promoting alignment with established technical norms for component integration and system performance without delving into specific implementation details or regulatory compliance procedures.