Solenoid valves are electrically operated valves that control the flow of liquids or gases in a system. These valves work by using an electromagnetic solenoid to open or close the valve, regulating the fluid flow accordingly. Non-toxic solenoid valves, specifically, are designed with materials and construction methods that prevent contamination of the fluid with harmful chemicals or substances. This is particularly important in industries that deal with sensitive applications such as drinking water systems, food and beverage production, medical devices, and pharmaceutical manufacturing.