Abstract: An improvement in agricultural sprayers having a reservoir, a pump, a discharge line, one or more valves for directing the flow of fluid to either a first or second flow line, one or more filter heads connected to the first and second flow lines and one or more spray nozzles, each connected to a filter head. One or more valves are provided to selectively connect either of the first or second flow lines to a return line which is connected to the reservoir. The filter head comprises a first conduit connected to the first flow line. The first conduit has a first filter seated therein. A second conduit having a second filter seated therein is connected to the second flow line and a third conduit is connected to and in communication with the first and second conduits and a spray nozzle.