Closed loop dispensing system

In combination,

• a liquid container having upper and lower ends;
• said container having a hollow throat extending upwardly therefrom which has interior and exterior surfaces;
• a throat plug assembly, having upper and lower ends, positioned in said throat of said container;
• said throat plug assembly having an upstanding, hollow valve body, having upper and lower ends, at the lower end thereof;
• said valve body having an upstanding hollow receiver, including upper and lower ends, above the lower end thereof which has a central opening formed in the upper end thereof;
• said valve body having at least one discharge metering orifice formed therein below the upper end thereof;
• a dip tube in communication with said lower end of said valve body and being in communication with the liquid in said liquid container;
• said valve body being at least partially positioned within said hollow receiver;
• a valve vertically movably mounted on said valve body which is movable between an upper closed position to a lower open position;
• said valve being movably positioned in said central opening of said hollow receiver to close said opening in said valve body when said valve is in its said upper closed position and to open said opening in said valve body when said valve is in its lower open position;
• said valve, when in its said lower open position, permitting flow of liquid through said dip tube upwardly through said valve body into the interior of said valve;
• a spring in said throat plug assembly which urges said valve into its said upper closed position;
• a cap removably mounted on said throat of container for selectively closing said throat;
• a dispensing tube extending from said cap for dispensing liquid from said container;
• a check valve associated with said cap for preventing backflow from said dispensing tube to said container and which permits liquid flow from said container to said dispensing tube in response to suction being applied to said dispensing tube;
• said cap including means for engagement with said valve to move said valve downwardly to its said lower open position when said cap is mounted on said container to close said throat, said spring is positioned in said throat plug assembly, so that the liquid passing through said throat plug assembly does not come into contact with said spring.