Part-turn electric actuators transmit torque to the fittings up to a maximum of one turn, they do not have the ability to transmit power loads. They are used to control valves such as: ball valves, butterfly valves, valves for air-conditioning, etc. Part-turn electric actuators for high range of torque consist of multi-turn electric actuator and a worm gearbox that multiplies the output torque of the actuator, according to EN 15714-2. In this way, SO 2-A, MO 3-A and MO 4-A multi-turn actuators are used for connection with gearboxes as well as their Rematic versions, gearboxes can be designed for open-close operation with a minimum service life of 2500 - 5000 cycles or for modulating duty with a service life of 5 million cycles. Part-turn actuators are designed with enclosure rating IP 54, IP 66, IP 67 and IP 68.
