Vickers KDG3V-3 and -5 valves are  used in open loop hydraulic circuits to  direct and meter flow in proportion to  pilot pressure commands. The   resulting controlled flow is used to  determine the direction, velocity and  acceleration/deceleration of hydraulic  cylinders or motors.  

The KDG3V is controlled by applying  pilot pressure, through an operator  mechanism, to either end of the valve’s  normally spring-centered spool. The  resulting force causes spool travel  when it is greater than the opposing  spring force.  Optional pressure feedback models  have a small pin inside the ends of the spool. Load pressure acts on the area of  the pin and opposes the pilot pressure,  thus closing the spool. For a given pilot  pressure, flow decreases as load  pressure increases, until maximum  pressure is reached at zero flow.  Maximum load pressure can be  changed by changing the pilot pressure.

 Pressure, actuator and tank port  connections are made by mounting the  valve on a subplate or manifold. Vickers  hydraulic remote controls （catalog  GB-MC-2032A） are an ideal means of  providing pilot pressure for the KDG3Vs,  and ultimay providing precise  low-effort control of actuator functions.

威格士KDG3V-3/5系列比例方向控制阀的*现货型号：KDG3V 5 2C90N 10 EN55    KDG3V 5 2C90N E 10    KDG3V 5 33C80N E 10         KDG3V 5 33C80N E 10 EN55