57 An automatic shutoff device is of the type which makes use of a venturi to terminate the flow of a liquid into a container when the liquid in the container reaches the level of a discharge tube. A movable housing (18) is operatively positioned downstream of a constrictive nozzle (16) giving rise to the venturi and a consequent low pressure area; the movable housing (18) substantially encompasses the low pressure area except that the downstream end of the housing (18) is open and serves as a discharge tube from which liquid flows into the container to be filled. The filling operation will continue until such time as the level of the liquid reaches the level of the discharge tube at which time liquid is rapidly drawn into the low pressure area causing the housing (18) to move in the downstream direction thereby overcoming the restoring force of an associated spring biased valve (20) causing the valve to seat to thereby substantially terminate the flow of liquid.