Patent ID: 8608963

Claim:
A water treatment system comprising: a first tank including a first set of sensors and a first resin bed; a second tank including a second set of sensors and a second resin bed; and a valve assembly coupled to the first tank and the second tank and including a controller in communication with the first set of sensors, the second set of sensors, and a flow meter, the first set of sensors positioned partially through the first tank coupled to the first resin bed and to the controller by external connections coupled to the first set of sensors outside of the first tank, the second set of sensors positioned partially through the second tank coupled to the second resin bed and to the controller by external connections coupled to the second set of sensors outside of the second tank, the controller configured and arranged to determine whether the first resin bed is exhausted based on input from the flow meter and the first set of sensors, the controller configured and arranged to switch service operation from the first tank to the second tank when the first resin bed is exhausted.