A solenoid valve is an electromechanical device used to control the flow of liquids or gases in a system. It uses an electric current to generate a magnetic field, which moves a plunger, opening or closing the valve. Traditionally, solenoid valves are constructed from materials that may contain harmful chemicals or metals, which could leach into the systems they regulate, creating potential health and environmental risks. Non-toxic solenoid valves, however, are designed with materials that are safe, non-harmful, and environmentally friendly. These valves ensure that no hazardous substances come into contact with the fluids or gases they control, making them an ideal choice for applications where safety is paramount.