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ONORM EN 15714-4:2025
Industrial valves - Actuators - Part 4: Hydraulic part-turn actuators for industrial valves - Basic requirements
This document specifies the basic requirements for both double-acting and single-acting hydraulic quarter-turn actuators for valves for on-off and modulating control functions. It provides guidelines, recommendations, and procedures for body and corrosion protection, inspections, and testing. It is not applicable to hydraulic actuators that are an integral part of control valves, to hydraulic actuators designed for continuous immersion in fresh or seawater, or to electro-hydraulic actuators. Additional requirements or application conditions that deviate from those specified in this document can be specified upon request.
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Austrian Standards Institute [on]