Rotork CK valve actuators

Built from a series of interchangeable modular building blocks, the Rotork CK valve actuator design can facilitate quick delivery. The modular construction presents a wide range of options and features, enabling each actuator to precisely match its specific valve duty and function. The choice ranges from basic actuators requiring separate motor controls to more sophisticated versions equipped with a digital control unit.

The digital control unit provides integral control, with data logging for diagnostics and asset management. The module is compatible with hardwired, digital or analog control protocols and offers integration with centralised and distributed control systems.

Non-intrusive, password-protected configuration is performed using the actuator selector switches or the handheld Rotork Setting Tool using infrared or Bluetooth interfaces. The display window provides position indication, status and alarms, plus user-friendly, menu-driven configuration screens.

The actuators provide isolating or modulating operation of multiturn, part-turn or linear valves. Operating from single-phase or three-phase electrical supplies, all actuators are environmentally sealed to IP68 against an 8 m head of water, for a maximum of 96 h continuous submersion, with 10 electrically powered operations permissible whilst submerged.

The actuators are manufactured in a range of three frame sizes. Manual handwheel operation, designed to standard EN12570, is independent of the motor drive and selected with a lockable hand/auto lever acting on a safe, low-speed clutch.

The maximum multiturn output torque is 10,800 Nm, while part-turn torque up to 205,600 Nm is achieved in combination with secondary gearboxes.