This actuator is integrally mounted to the valve with no open yoke and thus has no exposed linkages. It uses hydraulic supply on both sides of the piston to open or close the valve. Various failure modes (open, closed, or stay put) can be accommodated by an external control system.
   
single  

It is available in three sizes to cover our entire range or surface valves. Hydraulic supply required is 1500-3000 PSIG.

Control:
This actuator is supplied with a transmitter to provide 4-20 mA position feedback. Limit switches are also available within the transmitter housing. Other optional accessories including self-contained electro-hydraulic control systems can be mounted to the actuator.

Advantages:
-simple, robust design.
-high thrust capability.
-versatile failure modes.