Abstract: A centrifugal filter separator system operable to separate from oil under pressure, contaminants and water. The centrifuged water port of the centrifugal filter separator of the system is coupled to a differential pressure responsive, sensor control, which automatically senses the presence of a layer of centrifuged water against the internal surface of the rotating drum of the centrifugal separator. The sensor control is coupled to a flow control circuit which in conjunction with the differential pressure sensor control causes automatic removal of an existing layer of centrifuged water from the rotating drum via the water exit port of the separator. When there is no adequate depth layer of centrifuged water on the inner surface of the rotating drum, the sensor control deactivates the water removal circuit, while the flow control circuit maintains a minimum generally constant flow of liquid from the water port of the separator for priming purposes.

Abstract: A centrifugal filter separator system operable to separate from oil under pressure solid contaminants, by depositing them on the internal wall of a rotating drum, powered by reaction jet nozzles, while also separating water from oil and extracting it from the rotating drum through a water extraction circuit. A water-oil mixture from the water extraction circuit is passed through a pressurized gravity type separator, from which the separated oil is returned, on a continuous basis, back to the centrifugal filter separator system, while the quantity of the water retained in the gravity type separator is controlled by a water ejecting automatic control, responsive to the position of the water-oil miniscus, or to the position of the layer of water-oil emulsion separating water and oil within the separator.