A filter apparatus, in particular for the filtration of hydraulic media, includes a filter housing (4) and a filter element (30) arranged in the filter housing, Air present in the filter housing (4) can be removed from the housing by suction by a degassing device (52) that generates a negative pressure.

A filter element includes a first end cap, a second end cap, and an intermediate end cap disposed between the first end cap and the second end cap. A ring of first filter media circumscribing a first central cavity is disposed between the first end cap and the intermediate end cap. A ring of second filter media is disposed between the intermediate end cap and the second end cap. The filter element also includes an air-bleed conduit axially extending through the first central cavity and comprising a first portion integrally formed with the first end cap and a second portion integrally formed with the intermediate end cap and configured to connect to the first portion thereby forming a conduit for transmitting fluid.

A suction tube filter arrangement includes a suction tube defining a suction tube direction and a filter member extending along the suction tube direction. The suction tube is at least partially arranged inside the filter member.

A filtration device that includes: a filtration filter having a first main surface that captures a filtration target object contained in a liquid and a second main surface that faces the first main surface; and a housing that holds the filtration filter, and defines a liquid inflow path that faces the first main surface and a liquid discharge path that faces the second main surface, the housing including a tubular portion that extends in a direction away from the second main surface of the filtration filter and defines the liquid discharge path, and a flange portion that extends from an outer peripheral surface of the tubular portion, and the flange portion includes a vent hole extending away from the outer peripheral surface of the tubular portion.

A module alignment element, and a filter capsule including the module alignment element, a method of filtering fluid using the filter capsule, and a system including the filter capsule, are disclosed.

A fat screening device includes a cylinder, and a sieve basket. The cylinder includes a feed inlet, an air outlet, a bottom water outlet, and an accommodating space. The accommodating space is in communication with the feed inlet, the air outlet, and the bottom water outlet. The feed inlet is configured to receive a mixture, the bottom water outlet is disposed at a bottom of the cylinder, the accommodating space is configured to accommodate water and fat resulting from stratification of the mixture, and the bottom water outlet is configured to discharge the water. The sieve basket covers the feed inlet and is arranged separately from the air outlet. The sieve basket is configured to screen the mixture to discharge the water and the fat into the accommodating space.

Disclosed is a filtering system used in any pool filtrations, filtration of taps or building entrance hot and cold use water, filtration of city water before osmosis filtering devices, filtration of heating and cooling mechanical plant systems, and filtration of cooling water in hydro-electric power plants. The system provides for forming a vortex inside a filter by directing and increasing speed of filtered liquid and thus providing decreasing pressure on the filter surface and collection of filtered particulates in a particulate accumulation chamber. The system also provides for automatic cleaning of the filter by reverse flushing, without the need for dismantling, by differential pressure sensors based on rate of contamination.

A system for providing a pressurized liquid, having a reservoir for the liquid, which has a discharge and a feed, having a pump, having a first valve, having a separate filter chamber, having an inlet and at least one outlet, and a compressible, closed buffer body. The pump is between the discharge of the reservoir and the filter chamber and configured to increase pressure of the liquid within the filter chamber, the first valve between the feed of the reservoir and the filter chamber and configured to open in the direction of the reservoir upon attainment or exceedance of a minimum pressure of the liquid in the filter chamber. The buffer body is in the filter chamber such that it can be surrounded by liquid.

A filter cartridge (1) comprising a filter medium (2) of cylindrical shape defining a central axis (3), a first flange (4), said first flange (4) being a flange plate which comprises a central opening (5) defining a fluid outlet, a first face (4a) and a second face (4b) opposite the first face (4a), said face (2) being fixed to the second face (4b) of the first flange (4), and a filtering medium (6) extending from said first face (4a) along the central axis and projecting outwardly from said central opening (5), said cylindrical extension (6) having an outer face (6a) and an inner face (6b); characterized in that said cylindrical extension (6) is traversed by at least one vent (7), and in that a first joint element (8) is provided at a first position of the cylindrical extension (6) and a second sealing element (9) is provided on a second position of the cylindrical extension (6), the first joint element (8) being axially offset from the second joint member (9) with respect to the central axis so that said at least one at least one vent (7) is positioned between the first seal member (8) and the second seal member (9) with respect to the central axis (3). Filtration system incorporating such a cartridge.

An air management device for a filter assembly includes a top portion, a bottom portion, a plurality of frame members that connect the top portion to the bottom portion so as to define an inner cavity, and an air management valve. The air management valve includes a base portion, an intake valve, and an exhaust valve. The base portion is provided at the bottom portion. The intake valve extends into the inner cavity from the base portion towards the top portion. The intake valve includes an elongated opening that extends along a longitudinal length of the in-take valve. The exhaust valve extends into the inner cavity from the base portion towards the top portion. The intake valve is configured to intake air through the elongated opening and the amount of air introduced through the elongated opening varies based on a fluid level present within the air management device.