The HYDRACT actuator is working with sterile and pressurized tap water or with water containing glycol. The system pressure
is 50 bar. The pressurized water is supplied in a closed leak free system and the pressure is produced by a decentralised power unit with an accumulator with capacity for a large number of actuators.
In case of power failure the accumulator contains enough water to bring the valves into a safe position. In case of a total loss of pressure the valves will stay hydraulically locked in the current position.
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