rebuilt disc bowl self cleaning solids 1.25 kg/dm3, heavy solid 1.1 kg/dm3, The product flows into the bowl through inlet and is separated in disk stack into a light and a heavy liquid phase with simultaneous removal of the solids which collect in the sediment holding space. The light liquid phase flows towards the center and is discharged foam-free and under pressure by centrifugal pump through outlet. The heavy liquid phase flows to the periphery and is discharged under pressure by centrifugal pump through outlet. The separated gums and solids collect in sediment holding space and are instantaneously ejected through ports at pre-set intervals by lowering the sliding piston. Closing water drains via the bowl valve. The ejection cycles are initiated by a control unit