A water purification filter element is provided. The water purification filter element may include a filter bottle, a filter material, an end cover, and a water self-stopping and passing structure.

A filter device for the filtration of fluids, at least consisting of a filter housing (10), which can be closed by means of a cover (40), and a filter element (30) accommodated in a replaceable manner in the filter housing (10), is characterized in that at least one functional element is present on the cover (40) and on the filter housing (10) and on the filter element (30) in such a way that the filtration of the fluid is only possible when all functional elements interact simultaneously.

A filtration system includes a housing and a filter element positioned within the housing. The housing includes a first housing end and a second housing end. A drain opening is defined in the second housing end. The filter element includes a first endplate and a second endplate defining an endplate opening. Filter media is positioned between and extending axially between the first endplate and the second endplate. The filter media defines a central opening extending axially therein. A drain plug axially protrudes from the second endplate in a direction away from the filter media. The drain plug is configured to engage the drain opening and facilitate installation of the filter element into the housing. A lid is configured to engage the first housing end. The engagement between the lid and the first housing end occurs when the drain plug is disposed within the drain opening.

A removable filter assembly for filtering a fluid having a particulate or a contaminant and configured to engage a filter housing having a center post. The removable filter assembly includes a filter element adapted to remove at least one of the particulate or contaminate from the fluid, wherein the filter element includes an interior wall defining a passage having a first end and a second end. A container arrangement includes a channel and an outer wall in contact with the filter element at the first end of the passage, wherein the outer wall defines an outer profile extending from the first end of the passage toward the second end of the passage. The channel defines an inner wall configured to provide a relatively fluid tight seal with the center post. The container arrangement is adapted to capture at least one of the particulate or contaminate from the fluid. The outer wall of the container arrangement can include a plurality of radially aligned ribs.

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 liquid filtration system comprising a syringe pump comprising a gas chamber and a movable plunger, wherein the gas chamber has an aperture at a first end and the plunger forms a seal within the internal walls of the chamber; a liquid chamber having two openings, the openings positioned at opposite ends of the chamber and the first opening connected to the aperture of the gas chamber; a bioreactor in fluidic communication with the second opening of the liquid chamber; a filter arranged to filter liquid passing between the bioreactor and the liquid chamber, the filter comprising a permeate outlet for removing filtered liquid; wherein, in use, the plunger may be moved in a reciprocating motion causing a corresponding movement of gas which drives liquid alternately between the liquid chamber and the bioreactor such that liquid passes through the filter and filtered liquid may be removed via the permeate outlet.

A liquid filtration system comprising a syringe pump comprising a gas chamber and a movable plunger, wherein the gas chamber has an aperture at a first end and the plunger forms a seal within the internal walls of the chamber; a liquid chamber having two openings, the openings positioned at opposite ends of the chamber and the first opening connected to the aperture of the gas chamber; a bioreactor in fluidic communication with the second opening of the liquid chamber; a filter arranged to filter liquid passing between the bioreactor and the liquid chamber, the filter comprising a permeate outlet for removing filtered liquid; wherein, in use, the plunger may be moved in a reciprocating motion causing a corresponding movement of gas which drives liquid alternately between the liquid chamber and the bioreactor such that liquid passes through the filter and filtered liquid may be removed via the permeate outlet.

A filtering device generally constructed from two panels is disclosed herein. The device may be used for the isolation, concentration, and detection of particles with particular chosen characteristics. A first panel, an etched or molded filter panel, includes an array of V-shaped channels wherein the walls of the V-shaped channels have spacer pads and offset walls that create filtering pores when the filter panel is mated to a flat surface of a second panel. The use of semiconductor processing equipment provides incredible accuracy as well as the ability to construct extremely small features.

A filtering device generally constructed from two panels is disclosed herein. The device may be used for the isolation, concentration, and detection of particles with particular chosen characteristics. A first panel, an etched or molded filter panel, includes an array of V-shaped channels wherein the walls of the V-shaped channels have spacer pads and offset walls that create filtering pores when the filter panel is mated to a flat surface of a second panel. The use of semiconductor processing equipment provides incredible accuracy as well as the ability to construct extremely small features.

A composite media alternative to high pressure drop glass microfiber HEPA media for use in applications where HEPA efficiency with an oily aerosol challenge with low resistance are required. The composite media contains two light filtration layers, one or both of which is charged, and the efficiency of the material can be greatly increased over a single layer containing the same weight of material. The composite media contains a backer layer to provide mechanical support to the filtration layers.