2-Way Valve , 3-Way Valve , Electromechanical Devices , Fluid Control , On/Off Control , Plumbing Components , Solenoid Valves , Valve Selection , Valves Comparison 2-Way vs 3-Way Solenoid Valve Solenoid valves are electromechanical devices used to control the flow of fluids or gases. A 2-way solenoid valve acts like a simple on/off switch ... Read article