A、control the back pressure of return oil
B、lock the oil lines under some conditions
C、change the direction of oil flow
D、act as relief valve
更多“Hydraulic control check value is generally used to （） in the marine hydraulic mechanism.”相关的问题
A、transmit the rudder angle to the bridge indicator B、prevent the control linkage from striking the stops when hard over C、automatically purge all entrained air from the system D、send hydraulic signals to the receiving unit
A、molecular fluid vibration B、energy losses C、wide pressure variations D、mechanical damage to control valves
A、pump bearings in poor condition B、excessively worn actuator-piston packing C、broken directional control valve centering springs D、low hydraulic oil viscosity
A、A.molecular fluid vibration B、B.energy losses C、C.wide pressure variations D、D.mechanical damage to control valves
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