Patent ID: 7387722

Claim:
An ion exchange system for treatment of water to remove minerals therefrom, comprising: two water treatment tanks; a brine tank; a network of pipes interconnecting said treatment tanks and connecting said treatment tanks to said brine tank; a plurality of valves in said network of pipes whereby flow of water through said pipes is directed and controlled; control means connected to a least some of said valves, said connected valves being controlled in response to said control means; an inlet connected to said network whereby untreated hard water is piped into the system; an outlet on said network whereby treated soft water is directed out of the system; a flow measuring mechanism in said pipes to measure the flow of treated water, said flow-measuring mechanism being connected to said control means whereby the treatment tanks are used alternately depending on a predetermined flow of treated water through said measuring mechanism; and a float valve within said brine tank to control flow of brine and air from said brine tank and treated water into said brine tank.