Electromagnetic valve is an industrial equipment controlled by electromagnetism, which is an automation basic component used to control fluids. It belongs to the actuator and is not limited to hydraulic or pneumatic systems. The solenoid valve can be combined with different circuits to achieve the expected control, and the accuracy and flexibility of the control can be guaranteed. Different solenoid valves function at different positions in the control system, with the most commonly used being one-way valves, safety valves, directional control valves, etc. The solenoid valve has a sealed chamber with through holes at different positions, each connected to a different oil pipe. The middle of the chamber is a piston, and there are two electromagnets on both sides. The magnetic coil on which side is energized will attract the valve body to which side. By controlling the movement of the valve body, different oil discharge holes can be opened or closed. The oil inlet hole is usually open, and hydraulic oil will enter different oil discharge pipes, and then push the piston of the oil cylinder through the pressure of the oil, The piston drives the piston rod, which drives the mechanical device. In this way, mechanical motion is controlled by controlling the current flow of the electromagnet
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