In insert shot molding applications, it is necessary for the machine nozzle to back away from the mold with each shot. Our Machine Nozzle Shut Off Device was designed to drastically reduce drooling when the machine nozzle is disengaged from the hot runner intake nozzle in each cycle. Shut off nozzles increase productivity by eliminating unnecessary waste. This device can be beneficial when used on machines running stack molds or on machines with horizontal injection and vertical clamps (insert molding).