Drives

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Semi-rotary drives

Semi-rotary drives

Pneumatic quarter turn actuators according to the rack and pinion or Scotch yoke principle, in aluminium or stainless steel, for automating butterfly valves and ball valves.

Linear actuators

Linear actuators

Pneumatic linear actuators for opening/closing and control applications with integrated positioner. Suitable for linear process valves such as knife gate valves, penstock valves and pinch valves.

Selection guide

Selection Guide

Actuators in process automation

Linear actuatorLinear actuators from Festo are double-acting pneumatic piston actuators. The sturdy, corrosion-resistant design of the actuators is ideal for use in harsh and explosive ambient conditions in process automation applications. Actuators with different diameters, stroke lengths and standardised mounting interfaces are available for different installation situations. The linear actuators are suitable for opening/closing and control applications. Special product versions with an integrated displacement encoder or fully integrated positioner are available for control applications. Applications for linear actuators can be found in numerous industrial segments of process automation, such as linear movements for process valves (knife gate valves, shut-off valves, dosing slides, pinch valves) or swivel movements for damper control (ventilation flaps, turbine blade adjustment, etc.).
Quarter turn actuatorA quarter turn actuator is an actuator that transfers a torque of less than a full revolution (usually a swivel movement of 90°) to the process valve. The quarter turn actuators from Festo are tailored specifically to meet the requirements of the process industry in terms of force, corrosion resistance and standardised interfaces. They conform to the standard ISO 5211, which defines the interface between the quarter turn actuator and process valve, and NAMUR VDI/VDE 3845 for the direct mounting of limit switch boxes, positioners and pilot valves. The sturdy, corrosion-resistant design of the actuators is ideal for use in process automation applications in harsh and explosive ambient conditions. The quarter turn actuators are suitable for opening/closing and control applications for the automation of butterfly valves, ball valves and air dampers. They are also suitable for water/wastewater, beverage, pharmaceutical and general process automation applications.