The OpTk Series RA cylinder rotary actuator combines high torque and pneumatic stiffness with excellent throttling capabilities. These characteristics are designed into a lightweight, rugged and compact assembly, making the OpTk rotary actuator the foremost choice for quarter turn applications.

The OpTk rotary actuator is designed to operate OpDx high performance butterfly valves, OpVee ball valves, OpExc eccentric rotary plug valves and similar valves requiring precise rotary motion.

The OpTk double-effect rotary actuator is designed for supply pressures up to 150 psi (10.3 Bars), making very high torques attainable during operation. OpTk actuators for Optimux valves have a tested life time of over one million cycles, making them the most trustworthy actuator in the market today.

The positioner delivers air pressure to both sides of the piston in the cylinder ensuring exceptional positioning stiffness for precise throttling control as well as high frequency response. Inherent fail-safe position is achieved by flow direction in the valve and the spring positioning in the actuator.

Because of these intrinsic characteristics the OpTk RA actuator provides high performance operation beyond those provided by conventional diaphragm actuators.