Johnson Controls H91DA-7 Solenoid Valve 1/2" 120V provides dependable on/off control of fluid flow in commercial and industrial applications. This normally closed solenoid valve is designed for 120V operation and a 1/2-inch connection, allowing it to integrate easily into standard piping systems. When energized, the electrical coil generates a magnetic field that lifts the internal plunger, opening the valve to permit flow; when power is removed, the valve closes automatically to stop it. Its straightforward electromechanical operation supports precise control, quick response, and repeatable performance. Benefits include reliable shutoff, reduced manual intervention, compatibility with automated control systems, and durable construction that helps maintain consistent system operation over time.