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系列比例方向控制閥的*現貨型號：KDG3V 5 2C90N 10 EN55 KDG3V 5 2C90N E 10 KDG3V 5 33C80N E 10 KDG3V 5 33C80N E 10 EN55 |
