Patent ID: 7222375

Claim:
A tank ball assembly comprising: a cover stopper, said cover stopper comprising a top wall, a post vertically upwardly extending from the top wall, said post having a top screw hole, an adjustment screw threaded into said top screw hole, a short tubular flange upwardly protruded from the top wall around said post, and a first annular groove and second annular groove extending around the periphery of said short tubular flange at different elevations; a gasket attached to the top wall of said cover stopper around said short tubular flange; a retaining ring fastened to the first annular groove of said cover stopper to secure said gasket to said cover stopper; and a tank ball capped on said short tubular flange of said cover stopper and rotatable on said short tubular flange, said tank ball having a bottom coupling flange coupled to the second annular groove of said cover stopper, a water inlet at a top center thereof and an air outlet at one lateral side thereof, said water inlet having a diameter greater than said air outlet.