Patent ID: 8029664

Claim:
A variable wash flow filter assembly comprising: a housing which defines an inlet along a longitudinal axis, at least one filtered flow port, and at least one thru flow port; a frusto-conical wash filter axially fixed within said housing adjacent to said at least one filtered flow port; a wash velocity control cone biased relative to said housing by a bias member, said wash velocity control cone movable between a minimal position and a maximum position relative to said axially fixed wash filter to split a fuel flow through said inlet between a burn flow through said thru flow port and a filtered flow thru said filtered flow port; a spring seat mounted to a guide fixed to said housing to react against said bias member, said guide operable to guide said wash velocity control cone along said longitudinal axis between said minimal position and said maximum position; and a stability valve mounted to said wash velocity control cone such that fuel is guided at least partially through said stability valve to generate a backpressure, said wash velocity control cone and said stability valve fixed together to move as a unit and provide the same stroke to flow relationship.