Hydraulic valve is a pressure oil operation of the automation component, it is controlled by pressure valve oil, usually combined with the electromagnetic pressure valve, can be used for long-distance control of hydropower station oil, gas, water pipe system of the breaking. Often used in clamping, control, lubrication and other circuits. There are direct-moving and pilot-type points, multi-purpose pilot type. The function of hydraulic valves is mainly used to reduce and stabilize the oil pressure of a branch of the system, often used in clamping, control, lubrication and other circuits. There are straight-moving, pilot-type, superimposed-type points. A component used in hydraulic transmission to control pressure, flow and direction of liquids. The control pressure is called the pressure control valve, the control flow is called the flow control valve, control pass, break and flow is called directional control valve.
Classified by Function: flow valve (throttle valve, speed regulating valve, shunt valve, collector valve, shunt set flow valve), pressure valve (overflow valve, pressure relief valve, order valve, unloading valve), directional valve (solenoid valve, manual reversing Valve, one-way valves, hydraulic control one-way valve)