The innovative Rotork CK Range of modular electric valve actuators is designed to deliver a highly reliable, economical and flexible solution for applications in industries including power generation and water treatment. The CK is built from interchangeable modular building blocks and the design facilitates quick deliveries.
The modular construction enables each actuator to precisely match its specific valve duty and function. The choice ranges from basic actuators requiring separate motor controls to sophisticated versions equipped with a state-of-the-art intelligent digital control unit.
The digital control unit provides integral control with datalogging for diagnostics and asset management. The module is compatible with hardwired, digital or analogue control protocols and offers cost-effective integration with centralised and distributed control systems.
Non-intrusive, password protected configuration is performed using the actuator selector switches or the hand-held CK Setting Tool, using infra-red or Bluetooth® interfaces. The display window provides position indication, status and alarms plus user-friendly menu-driven configuration screens.
CK actuators provide isolating or modulating control of multi-turn, part-turn or linear valves. Operating from single-phase or three-phase electrical supplies, all actuators are environmentally sealed to IP68 against an 8 metre head of water for a maximum of 96 hours continuous submersion with 10 electrically powered operations permissible whilst submerged. Plug and socket connections for power supplies and between modules assist swift site wiring and provide a simple connection platform for upgrades and modifications. They are manufactured in a range of three frame sizes complying with international actuator design standards EN15714-2 and EN ISO 5210. 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. All actuator sizes can utilise separate thrust or non-thrust bases, enabling actuators to be removed from the valve without affecting valve position.
In combination with secondary gearboxes, the CK Range maximum multi-turn output torque is 10,800 Nm (8,000 lbf.ft) and part-turn torque is 205,600 Nm (151,600 lbf.ft). The torque range facilitates reliable operation of valve types and sizes typically found in industries such as power generation and water treatment.