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This hydraulic butterfly valve apply to marine manufacture,DN800,with hand wheel - details see: https://www.machineto.com/hydraulic-butterfly-valve-10300789

Flowtecal F4-Series hydraulic actuators are ideally suited for operating ball, butterfly, plug valves,dampers and other 90 degree turn devices. the high pressure power of hydraulic system makes hydraulic actuator have smaller weight than pneumatic and electric actuators,etc

The realization of incompressibility of hydraulic medium and system zero leak and high maintaining pressure make the electro-hydraulic actuator with relatively high positioning characteristic