Patent ID: 8225811

Claim:
An apparatus comprising: a tank having an interior volume and a bottom; a tubular member positioned in communication with said tank, said tubular member having an end adjacent said bottom of said tank; an air compressing means interconnected to said tubular member, said air compressing means for passing compressed air into said interior volume of said tank; a check valving means positioned at an opposite end of said tubular member, said tubular member having a spiral pathway formed therein, said check valving means having a ball positioned in said tubular member, said ball movable along said spiral pathway; a head pressure relief valve in communication with said tubular member; and a pressure switching means cooperatively connected to said air compressing means, said pressure switching means for opening said head pressure relief valve when an air pressure in said tank reaches a desired level so as to cause air and water in said tank to pass through said tubular member, said check valving means for stopping the passing of air and water after a period of time.