Solenoid valve including coil, magnet, plunger. When the coil connected to the current, they have a magnetic, attract each other with the magnet, the magnet will pull the mandrel. Turn off the power, the magnet and ejector reset, so that the solenoid valve to complete the work process. This is the working principle of the solenoid valve. Solenoid valves are typically used in hydraulic systems to close and open circuits. In fact, depending on the temperature and pressure of the medium flowing through it, there is no pressure, such as pressure and gravity flow in the pipeline. The working principle of the solenoid valve is different. For example, in the state of free flow need zero pressure start, that is, the coil, the coil sucked the whole body. The pressure state of the solenoid valve, the coil is energized after suction inserted in the gate body of a pin, with the fluid pressure to lift the gate body. The difference between these two methods is that the free-flow solenoid valve, because the coil to suck the entire gate, so the larger pressure solenoid valve state, only need to pick up the pin, so the volume can be compared small.
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