Patent ID: 9714715
Date: 2017-07-25
CPC Classifications: B01D,B01J,C02F,F16K

Claim:
1. An apparatus comprising: a control valve configured for use in connection with a liquid treatment tank, comprising: a valve body, wherein the valve body includes a piston, wherein the piston is selectively longitudinally movable within the bore, wherein at least one of the piston and the valve body includes annular flow cavities, wherein selected ports are enabled to be in fluid connection through the flow cavities, a valve controller, wherein the valve controller is operable to selectively move the piston to a plurality of longitudinal positions, wherein wherein the valve includes at least one movable further valve member, wherein movement of the at least one further valve member is operative to selectively cause the further port F to be fluidly open to at least one flow cavity in the valve and closed off from at least some flow cavities in the valve, wherein the controller is in operative connection with the at least one further valve member, wherein the valve controller is operative to cause the piston to be positioned in the first piston position and to move the at least one further valve member such that treated liquid is enabled to be delivered from port E to further port F so as to enable treated liquid to be added to the further tank.