A poppet solenoid valve is an electromechanical device used to control the flow of fluids or gases in various systems. It operates using a solenoid, which is an electrically controlled coil, to move a poppet (a type of valve mechanism) into or out of a seat. When the solenoid is energized, it pulls the poppet away from the seat, allowing fluid or gas to flow through the valve. When the solenoid is deactivated, the poppet returns to its seat, stopping the flow. Poppet solenoid valves are known for their quick response times and reliability, making them ideal for applications in automotive, industrial, and HVAC systems.