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Abstract

A dispensing device for a bag container a liquid, made of flexible material and forming upper and lower walls through which holes are formed for receiving the device, has a tubular lower part with a top flange which is sealed to the inside of the lower wall and depends through the hole in the lower wall. A tubular upper part has a top flange sealed to the inside of the upper wall and depends through the hole in that wall and is telescoped inside the lower part so as to move up and down in the lower part. The top of the upper part forms a piston such as a collapsible dome extending upwardly through the hole in the upper wall and exposed on the outside of the upper wall and therefore exposed on the outside of the bag. The lower part has a lower end having a self-closing valve and has at least one side port normally open to a space between the flanges and therefore between the bag walls. The lower part has one or more ports normally open to that space and through which liquid contained by the bag can flow into the interior of the device. The upper and lower parts are elastically or spring biased apart and when the piston is pressed the upper part moves down into the lower part until stopped by interengaging of the two flanges, forcing open a self-closing valve in the bottom end of the lower part, so that the liquid in the bag is dispensed.

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First Claim