The Type HY Hydraulic Actuator is a ratio-piston-type actuator mounted on a reverse-acting gate valve. The HY Hydraulic Actuator is designed to be fail-safe and fail-close. When installed as part of a safety system, it will automatically close with the loss of control pressure and will open automatically when the control pressure is restored.
Assessed By:IEC 61508 Certificate Assessment Report
Last Updated: Tue, August 11, 2020