A filter element includes an unfiltered side via which a fluid is able to be introduced, and a filtered side via which fluid is able to be output, and first and second filter mediums that are situated between the unfiltered and filtered sides, where the first filter medium has a lower relative pressure loss than the second filter medium in a flow direction of the fluid from the filtered side to the unfiltered side.

A filter element includes an unfiltered side via which a fluid is able to be introduced, and a filtered side via which fluid is able to be output, and first and second filter mediums that are situated between the unfiltered and filtered sides, where the first filter medium has a lower relative pressure loss than the second filter medium in a flow direction of the fluid from the filtered side to the unfiltered side.

A cleaning system of a vehicle oil circuit is provided, including a filter unit, an oil storage unit and a flushing unit. The filter unit includes a filter chamber, a first oil inlet tube and an oil outlet tube. The first oil inlet tube is communicated with a first opening of the vehicle oil circuit. The oil outlet tube is communicated with a second opening of the vehicle oil circuit. The oil storage unit includes a waste oil chamber and a second oil inlet tube communicated with a third opening of the vehicle oil circuit. The flushing unit includes a flushing chamber and a flushing tube. The flushing chamber receives a washing oil. The flushing tube is communicated respectively with the flushing chamber and a fourth opening of the vehicle oil circuit. The flushing tube guides the washing oil to enter the vehicle oil circuit.

A cleaning system of a vehicle oil circuit is provided, including a filter unit, an oil storage unit and a flushing unit. The filter unit includes a filter chamber, a first oil inlet tube and an oil outlet tube. The first oil inlet tube is communicated with a first opening of the vehicle oil circuit. The oil outlet tube is communicated with a second opening of the vehicle oil circuit. The oil storage unit includes a waste oil chamber and a second oil inlet tube communicated with a third opening of the vehicle oil circuit. The flushing unit includes a flushing chamber and a flushing tube. The flushing chamber receives a washing oil. The flushing tube is communicated respectively with the flushing chamber and a fourth opening of the vehicle oil circuit. The flushing tube guides the washing oil to enter the vehicle oil circuit.

A method including the steps of moving fluid through an inlet into a vessel, the vessel being at atmospheric pressure and having at least one side wall and a bottom wall forming an internal chamber within the vessel. The method further includes moving the fluid into and through a filtration unit utilizing a downstream pump, the filtration unit creating a flux of less than or equal to about 0.05 gallons per minute per square foot (GPM/ft.sup.2), and moving the fluid processed by the filtration unit to an outlet and out of the vessel.

A method including the steps of moving fluid through an inlet into a vessel, the vessel being at atmospheric pressure and having at least one side wall and a bottom wall forming an internal chamber within the vessel. The method further includes moving the fluid into and through a filtration unit utilizing a downstream pump, the filtration unit creating a flux of less than or equal to about 0.05 gallons per minute per square foot (GPM/ft.sup.2), and moving the fluid processed by the filtration unit to an outlet and out of the vessel.

Disclosed is a water filtration device which includes various hoses for connection between different parts of the filtration device and a rotatable cam system which, during backwash cycles, is rotated so as to clamp various the hoses in predetermined sequences for thereby controlling the direction of the flow of water through the tubing system. Electrical pinch valves are use alternatively to a cam shaft.

The present invention relates to a multistage fiber filtering apparatus capable of selectively filtering depending on turbidity of raw water, in which a first filtration mode where the raw water passes through a fiber ball medium, a second filtration mode where the raw water passes through a fiber yarn medium, or a third filtration mode where the raw water passes through both of the fiber yarn medium and the fiber ball medium may be selectively operated.

A fluid filtration system includes a fluid storage vessel such as a bioreactor, a filter housing including a filter element disposed therein, a pump coupled between the fluid storage vessel and the filter housing, and a flow diverter disposed between the pump and the filter housing. The pump is configured to move fluid from the fluid storage vessel through the filter element, and the flow diverter is configured for selectively directing fluid received from the pump to the first or second end of the filter housing. In a first mode of operation, the flow diverter directs flow through the filter housing in a first direction, while in a second mode of operation, the flow diverter directs flow through the filter housing in a second direction opposite the first direction.

A fluid filtration system includes a fluid storage vessel such as a bioreactor, a filter housing including a filter element disposed therein, a pump coupled between the fluid storage vessel and the filter housing, and a flow diverter disposed between the pump and the filter housing. The pump is configured to move fluid from the fluid storage vessel through the filter element, and the flow diverter is configured for selectively directing fluid received from the pump to the first or second end of the filter housing. In a first mode of operation, the flow diverter directs flow through the filter housing in a first direction, while in a second mode of operation, the flow diverter directs flow through the filter housing in a second direction opposite the first direction.