A Compact Solenoid Valve is an electromechanical device used to control the flow of fluid in a system. It consists of a solenoid (an electromagnet), a valve body, and a moving component that opens or closes the valve in response to an electric current. When the solenoid is energized, it generates a magnetic field that drives the valve’s mechanism, allowing fluid to flow through or blocking it. These valves are referred to as "compact" due to their smaller size, making them ideal for applications where space is limited or where smaller components are preferred.