Rusco 1-1/2-140-F Polyester Screened Spin-Down Filter System The Rusco sediment filters usecentrifugal separation technologyto filter sediment from water. The Rusco filter system's filter screen iscleanable and reusable. The Rusco filter system's filter screen iscleanable and reusable. Rusco Sediment Filters have anopen ball valve to easily flush sediment. When the Rusco filter is full of sediment, simply open the ball valve to flush the sediment.