A quarter turn actuator is an actuator that transmits torque to the fitting for less than a full revolution (usually a quarter turn). Festo quarter turn actuators are specially tailored to the requirements of the process industry in terms of force, corrosion resistance and standardized interfaces. They comply with standard ISO 5211, which defines the interface between quarter turn actuators and fittings, and NAMUR VDI/VDE 3845 for direct mounting of limit switch boxes, valve positioners and pilot valves. The sturdy corrosion-resistant design of the actuators is ideal for use in harsh and explosive environments in process automation.
The quarter turn actuators are suitable for open/close 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.