A ROCKFORD SEPARATOR IS designed for exceptionally high efficiency in retaining a wide variety of insoluble wastes.Maximum water travel without turbulence though the lilltering action of its scereens prevents evacuation i......A ROCKFORD SEPARATOR IS designed for exceptionally high efficiency in retaining a wide variety of insoluble wastes.Maximum water travel without turbulence though the lilltering action of its scereens prevents evacuation into drainage systems which may cause blocking ,stoppages and backups.