Solenoid valve definition and principle

Solenoid valve is used to control fluid automation components, belong to the actuator; Not limited to hydraulic, pneumatic. Solenoid valves are used to control the direction of hydraulic flow. Mechanical devices in factories are generally controlled by hydraulic steel, so solenoid valves will be used.

Works: solenoid valve has closed cavity, in the different position of the open hole, each hole leads to different tubing, cavity valve is among, both sides are two electromagnets, which face the magnet coil electricity body will be attracted to which side, by controlling the movement of the valve body blocked or leakage of different discharge of oil hole, and the oil hole is always open, hydraulic fluid will enter the different line of tubing, Then through the oil pressure to push the oil piston, the piston and drive the piston rod, the piston rod drive the mechanical device. 

This controls mechanical motion by controlling the current in the electromagnet.