A solenoid valve is controlled by an electric current through a solenoid which converts electrical signalsselenoid-valve into functions. Using the electricity, the solenoid changes the direction of air through the valve quickly. In two-ports valve, the flow is switched on or off; whereas, in three-port valves, the outflow is switched between the two outlet ports. These valves are applicable in most industries because of its high reliablity, fast and safe switching , low control power and etc.
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