DC12V 3 Way Precision Solenoid Valve Normally Closed Solenoid Valve Low Noise Solenoid Air Valve for Air Pressure System _x000D_ _x000D_ Package includes: 1 piece of solenoid valve The product will be upgraded constantly, the appearance and color may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Concept A solenoid valve is an electromechanical controlled valve. The valve features a solenoid, which is an electric coil with a movable ferromagnetic core in its center. This core is called the plunger. In rest position, the plunger with a rubber gasket on the bottom closes off a small orifice. Thus, a small spring holds the plunger down to close the valve. An electric current through the coil creates a magnetic field. The magnetic field exerts a force on the plunger. As a result, the plunger is pulled toward the center of the coil so that the orifice opens. When the solenoid is not powered, the magnetic field disappears, making the spring goes back up and the orifice will be closed. Model: KSV4WB-12A-3E Type: solenoid valve, triple valve, parallel valve, air valve Rated voltage: DC12V Working voltage: DC 11.4~12.6V Maximum pressure: 260mmHg Maximum current: 140mA Power: