There are closed chambers in the electric control valves water use. There are through holes in different positions. Each hole leads to different oil pipes. In the middle of the chamber is a valve, and on both sides are two electromagnets. The magnet coil electrifying valve body on either side will be attracted to which side. By controlling the movement of the valve body, different oil drain holes will be blocked or leaked out, while the oil inlet hole is usually open. The hydraulic oil will enter different drain pipes, and then push the piston of the cylinder through the pressure of the oil. The piston will drive the piston rod, and the piston rod will drive the mechanical device. In this way, the mechanical motion is controlled by controlling the current of the electromagnet.
