Abstract: A filter assembly for a filter cartridge is disclosed, the filter assembly including a generally cylindrical carbon block filter element and a generally cylindrical pleated filter element disposed around the radially outer surface of the carbon block filter element. The filter assembly has an outlet communicating with the axial cavity of the carbon block filter element, so that filtrate first passes through the pleated filter element, enters the carbon block filter element through its radially outer surface, propagates radially inwardly to the central cavity of the carbon block filter element and then axially along the central cavity of the carbon block filter element, and exits the central cavity of the carbon block filter element through the outlet.

Abstract: A filter cartridge configured to provide two or more levels of fluid filtration or conditioning from within a single filter cartridge is disclosed, the filter cartridge including a housing that defines an interior cavity and has an inlet portion for receiving fluid into the cavity, a first outlet portion for discharging fluid from the housing, and a second outlet portion for discharging fluid from the housing. The filter cartridge also includes a first stage filter disposed within the interior cavity for conditioning fluid passing therethrough, the first stage filter in fluid communication with the inlet portion and the first outlet portion by way of a first flow path, and a second stage filter disposed within the interior cavity of the housing for conditioning fluid passing therethrough, the second stage filter in fluid communication with the inlet portion and the second outlet portion by way of a second flow path.

Abstract: Disclosed is a unique filter assembly for ensuring replacement cartridge compatibility in filtration systems having replaceable filter cartridges with lugged mounting systems. One representative filter assembly includes a representative cartridge member having a body portion for enclosing filter media and a neck portion depending therefrom. The representative neck portion of the representative cartridge includes at least one axial inlet port for directing unfiltered fluid into the body portion and at least one axial outlet port for directing filtered fluid out of the body portion. The representative neck portion also has at least two representative lugs depending radially outwardly therefrom, wherein at least one lug defines a keyed engagement surface, a leading inclined cam surface and a trailing inclined cam surface.

Abstract: A filter assembly is disclosed including a cartridge member having a body portion and a cylindrical neck portion depending from the body portion, the neck portion having at least one lug depending radially outwardly therefrom having a keyed surface formation thereon, and a reception member defining an axial bore for receiving the neck portion of the cartridge member, the bore having at least one reception area provided therein for receiving the at least one lug, the reception area having a compatible mating surface formation defined therein for engaging the keyed surface formation on the lug so as to prevent engagement with an incompatible cartridge member.

Abstract: A combination filter element comprising a bundle of hollow microporous fibers housed within an extruded carbon block, wherein the carbon block is fabricated to balance particle retention capacity against absorption capacity to provide a composite filter with desirable pressure drop, filter life, and particulate and chemical contamination reduction, and a filtration device, in which combination filter element may be employed, having a base portion including a sump which has an inlet and an outlet and a base which has a reception port for receiving the filter element.

Abstract: An encapsulated filter cartridge is disclosed, which includes a filter assembly including a carbon block filter element and a microporous filter element. The filter cartridge has a permanently sealed sump defining an interior chamber configured to accommodate the filter assembly, the sump having an inlet for permitting unfiltered fluid to enter the interior chamber for communicating with the radially outer surface of the filter assembly and an outlet for permitting filtered fluid to exit the interior chamber from the axial portion of the filter assembly. The microporous filter element of the filter assembly may include a hollow fiber subassembly housed within the axial cavity of the carbon block element, said fiber subassembly including a plurality of hollow microporous fibers, or a pleated filter element surrounding the radially outer surface of the carbon block element.

Abstract: A filter cartridge configured to provide two or more levels of fluid filtration or conditioning from within a single filter cartridge is disclosed, the filter cartridge including a housing that defines an interior cavity and has an inlet portion for receiving fluid into the cavity, a first outlet portion for discharging fluid from the housing, and a second outlet portion for discharging fluid from the housing. The filter cartridge also includes a first stage filter disposed within the interior cavity for conditioning fluid passing therethrough, the first stage filter in fluid communication with the inlet portion and the first outlet portion by way of a first flow path, and a second stage filter disposed within the interior cavity of the housing for conditioning fluid passing therethrough, the second stage filter in fluid communication with the inlet portion and the second outlet portion by way of a second flow path.

Abstract: A combination filter element comprising a bundle of hollow microporous fibers housed within an extruded carbon block, wherein the carbon block is fabricated to balance particle retention capacity against absorption capacity to provide a composite filter with desirable pressure drop, filter life, and particulate and chemical contamination reduction, and a filtration device, in which combination filter element may be employed, having a base portion including a sump which has an inlet and an outlet and a base which has a reception port for receiving the filter element.

Abstract: A filter assembly is disclosed including a cartridge member having a body portion and a cylindrical neck portion depending from the body portion, the neck portion having at least one lug depending radially outwardly therefrom having a keyed surface formation thereon, and a reception member defining an axial bore for receiving the neck portion of the cartridge member, the bore having at least one reception area provided therein for receiving the at least one lug, the reception area having a compatible mating surface formation defined therein for engaging the keyed surface formation on the lug so as to prevent engagement with an incompatible cartridge member.

Abstract: A filter assembly is disclosed including a cartridge member having a body portion and a cylindrical neck portion depending from the body portion, the neck portion having at least one lug depending radially outwardly therefrom having a keyed surface formation thereon, and a reception member defining an axial bore for receiving the neck portion of the cartridge member, the bore having at least one reception area provided therein for receiving the at least one lug, the reception area having a compatible mating surface formation defined therein for engaging the keyed surface formation on the lug so as to prevent engagement with an incompatible cartridge member.

Abstract: A combination filter element comprising a bundle of hollow microporous fibers housed within an extruded carbon block, wherein the carbon block is fabricated to balance particle retention capacity against absorption capacity to provide a composite filter with desirable pressure drop, filter life, and particulate and chemical contamination reduction, and a filtration device, in which combination filter element may be employed, having a base portion including a sump which has an inlet and an outlet and a base which has a reception port for receiving the filter element.

Abstract: A filtration device having a base portion including a sump which has an inlet and an outlet and which accommodates a filter element. The base has a reception port for receiving the filter element. The sump optionally is enclosed by a housing which is engaged to a portion of the base.

Abstract: A combination filter element comprising a bundle of hollow microporous fibers housed within an extruded carbon block, wherein the carbon block is fabricated to balance particle retention capacity against absorption capacity to provide a composite filter with desirable pressure drop, filter life, and particulate and chemical contamination reduction, and a filtration device, in which combination filter element may be employed, having a base portion including a sump which has an inlet and an outlet and a base which has a reception port for receiving the filter element.

Abstract: An improved multi-port connection device (10) adapted to receive prior art membrane and filter canisters (12) and to make connections between plural connection devices more convenient and versatile, comprising a plurality of flow ports (43,45,47) which are all at a common level, two of which communicate through apertures (52,54) in a barrier wall (55) forming a female connector with input and output flow paths (18,16) in the canister male connector, said apertures (52,54) being positioned in the barrier wall (55) on separate sides of an O-ring seal at locations communicating with the input and output flow paths (18,16).