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MOKA (52 325 - 52 329) 

Electric rotary (90°) actuators for ball valves and flaps - outside containment of nuclear power plants.


The actuators MODACT ® MOKA are designed for special valves installed out of the containment of nuclear power plants with reactors type VVER and in attended spaces of nuclear power plants with reactors type RBMK. According to ranking within safety classes and purpose of their use, the actuators MOKA belong to the elements: 2N; 3N; 4N; 2Z; 2P; 2O; 2NZ; 2NO according to OPB-88/97 and make it possible to control shut-off and regulation valves by reversible rotary motion with turning angle of the output part up to 90°, including cases requiring tight closure in limit positions. A typical example of using is control of ball valves, flaps, and similar devices in the regime of remote control and automatic regulation. The actuators are installed directly on a controlled organ.

Technical data

Type number52 32552 32652 32752 32852 329
Tripping torque [Nm]16-8063-125125-250250-500500-1000
Tripping force [kN]     
Adjusting time [s/90°]10-8010-8020-16020-8040-160
Position-changing velocity[min-1]     
Working stroke[°]9090909090
Supply voltage1x 230 V, 50 Hz     
24 V, 50 Hz     
1 x 110 V, 50 Hz     
3 x 230 / 400 V, 50 Hz
ControlTwo position On-Off
Three position     
Position sensingResistance transmitter (R)
Digital (I)     
Current transmitter (I)
Position interrupt
Torque-initated interrupt
Manual actuation
Explosion-proof design     
Type of enclosureIP 67IP 67IP 67IP 67IP 67
Weight - depending on design (Al/cast iron) and on motor [kg]7,51313-21 26-2743-45

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