The incompressibility of a water hydraulic system gives the HYDRACT actuator an outstanding precision. This allows the valve to open or close independent of the flow direction – a water hammer will not affect the valve.
Because of the outstanding precision and stability most valves can be used as variable position or control valves. Used for control / regulation valves the actuator can be controlled from input on absolute position, temperature, pressure or flow.
The HYDRACT system reduces the energy cost and CO2 emission by more than 65 %. In comparison pneumatic systems loses 2/3 of the energy on compression inefficiency and system air leaks.
The HYDRACT actuator is universal and can be used for most existing process valves in the and it can also be retrofitted to existing valves
The high power-density reduces the size of the actuator compared with an air/spring and because of the smaller actuator the distance between the valves can be reduced - reducing occupied floor space by 30%.
The HYDRACT actuator works with sterile and pressurized tap water or water containing glycol at 50 bar pressure. The decentralized power unit with an accumulator has a capacity for a large number of actuators.
In case of a power failure the accumulator contains enough water to bring the valves into a safe position and in case of a total loss of pressure the valves will stay locked in the current position.
The hygiene is improved because unlike a pneumatic system, HYDRACT is not exhausting compressed air containing bacteria and oil.
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