Temperature sensitive water supply shut-off system

摘要

An automatic water supply shut-off system includes a shut-off valve movable between opened and closed positions in a line leading from the water supply. An electric motor actuates the shut-off valve and is electrically connected to a power source through an electric circuit so that when the circuit is closed the electric motor actuates the shut-off valve into the open position to allow water flow through the line. At least one temperature sensitive switch is disposed in the electrical circuit and is operative to normally close the electrical circuit above a predetermined temperature and to open the electrical circuit at or below the predetermined temperature, whereby the shut-off valve moves to the closed position.