Automatic shut-off valves are devices designed to stop the flow of liquids or gases in a system when certain conditions are met. They are commonly used in various applications, such as plumbing, gas lines, and industrial processes, to enhance safety and prevent leaks or spills. These valves can be triggered by changes in pressure, temperature, or flow rate. When an automatic shut-off valve activates, it quickly closes to prevent further movement of the substance, protecting equipment and the environment. This feature is particularly important in systems where hazardous materials are involved, as it helps minimize risks associated with accidents or malfunctions.