Spring Return Actuator Articles & Analysis
9 news found
The actuators will open the valves once within 48 hours of the jacket being submerged and provide a fail-safe return to the closed position if there is a hydraulic supply failure in future. Rotork RH actuators were specified for the project as a hydraulic power supply is the preferred method for subsea actuation. ...
Rotork Site Services assisted with installation of the actuators on site by providing valve adaptation, mounting the actuators on to the valves and commissioning. Rotork’s versatile, modular CP range of pneumatic actuators use a scotch yoke design available in both spring-return and double-acting ...
Rotork’s successful and innovative solution comprises GH and RH hydraulic spring-return actuators operated by Pressure Safe self-contained manually operated hydraulic power packs. A hydraulic hand pump on the compact Pressure Safe power pack is used to energise the actuator and compress the failsafe ...
Awarded by Hyundai Heavy Industries, the order included spring-return pneumatic actuators to operate 30" and 36" Class 1500 ball valves, with the specification that the maximum actuator output torque at a design pressure of 9.4 bar should not be in excess of 90% of the valves’ maximum allowable stem torque (MAST). Due to ...
To meet this requirement Rotork has supplied GP, RCG and RC200 scotch-yoke actuators and control panels. The spring-return heavy-duty GP actuators are fitted to DN400 ball valves installed on the main pipelines at each end of the bridge. ...
The application required the valves to be electrically operated, spring-return failsafe with SIL2 functional safety certification for use in hazardous areas. ...
The Rotork Skilmatic SI self-contained electro-hydraulic valve actuator combines all-electric simplicity with the precision of hydraulic actuation and the reliability of mechanical failsafe operation. ...
Twelve ILG-D gearboxes were delivered within four weeks by the Rotork Gears Houston facility for attachment to K-Tork pneumatic vane-type actuators installed at an 1850MW coal-fired power plant in New Mexico. ...
Rotork has introduced an innovative range of manually energised spring-return actuators to provide an economical solution for failsafe valves that are infrequently operated. ...