Abstract: A filter cartridge comprising a first attachment member (25) and suitable for attachment to a predetermined holder (2) that includes a second attachment member (26) engageable with the first attachment member (25). The cartridge comprises foolproofing means (31) engageable with second foolproofing means (32) connected to the predetermined holder (2) when the cartridge is mounted on the holder. A system for mounting said cartridge on the predetermined holder is also disclosed.

Abstract: This invention relates to a modular purification system having a disposable sump assembly and an improved flow distribution plate. The system is readily adaptable to a variety of configurations without the need for repiping or replumbing of the installation, and lends itself to the use of multiple purification techniques.

Abstract: A modular filter system using replaceable filter cartridges includes a locking arrangement that prevents rotation of the flow control valve spindle in the filter head, but includes an unlocking arrangement on the cartridge that unlocks the locking arrangement if the proper replacement cartridge is used. The locking arrangement may include spring biased locking pins carried on the filter head and matching unlocking pins on the filter cartridge to operate through an intermediate adaptor ring that is set on assembly to match the positions of the locking and unlocking pins.

Abstract: The invention relates to an aircraft filter device comprising a hydraulic block adapted to receive removably a filter (2) comprising a vessel (3) receiving a cartridge (4), wherein the vessel is fitted internally with a pin (6) of elastically deformable material comprising firstly a key (8) that extends towards the opening of the vessel and that includes a curved end (9) that projects beyond an edge of the vessel, and secondly a finger (10) that extends towards the bottom of the vessel, and that is oriented towards the center thereof, so that when a cartridge is put into place in the vessel, the finger is pushed back by the cartridge and forces the key to retract so that its curved end no longer projects radially from the vessel, the cartridge being fitted with an external obstacle (14) that co-operates with one end of the finger in order to prevent the cartridge being withdrawn from the vessel.

Abstract: The invention relates to a filter device comprising a hydraulic block (1) receiving a removable filter (2) that is screwed into a first internal thread (8) of the hydraulic block. The hydraulic block receives a retaining member (101) suitable for retaining the filter axially when the filter is screwed to the hydraulic block, the hydraulic block including a second internal thread (8) that is on the same axis as the first internal thread and that receives a fastener member (102) for fastening the retaining member to the hydraulic block, the fastener member being screwed into the second internal thread with toque that is sufficient to prevent the retaining member escaping in service.

Abstract: A filter assembly is described that includes a substantially recyclable filter cartridge inside a pressure vessel. The invented filter cartridge comprises substantially non-pressure bearing walls, except for a pressure-bearing neck or cap with neck that is adapted to withstand high pressures preferably in the range of at least 200 psi, and more preferably at least 475 psi from the inside. The walls of the filter cartridge that are incapable of withstanding significant internal pressure are surrounded on the outside by a pressure vessel. The invented cartridge need not seal to the pressure vessel, because the cartridge neck protrudes outside of the pressure vessel to seal directly to a filter head. The cartridge preferably includes a quick-disassembly mechanism for allowing quick and non-destructive access to the internal components and media of the cartridge.

Abstract: A filter and filter element is provided that incorporates a valve member for preventing priming fluid from contaminating a clean fluid side of the filter or filter element. The filter may incorporate a replaceable filter element or be replaceable itself. The valve member is preferably formed as an annular flange of a grommet mounted to an end cap of the filter element. The annular flange sealingly engages with the end cap and closes a clean fluid outlet port in a relaxed state and opens the clean fluid outlet port in a deformed state.

Abstract: A filter system having a filter element ejection device is provided. Filter systems according to the present invention may include a filter element that includes an ejection receiver for receiving actuation action from an ejector of a filter housing. The ejector engages the ejection receiver when a user desires to eject the filter element from the filter housing. Typically, the ejector extends through the filter housing and axially ejects the filter element from the housing.

Abstract: A water purifier system comprising a base unit (2) and a filter unit (1) detachably connected to said base unit (2). The base unit (2) is provided with a water inlet tube (3) for guiding water to the filter unit (1) and with a water outlet tube (4) for guiding purified water from the filter unit (1). The filter unit (1) comprises a container (7) surrounding a replaceable filter element (13). The container (7) is provided with a water inlet member (10) for guiding unfiltered water from said water inlet tube (3) into the container (7). The replaceable filter element (13) is provided with a water outlet member (11) for guiding purified water from the filter element (13) to said water outlet tube (4) of the base unit (2), whereby said water outlet member (11) extends through an opening (17) in the wall of the container (7).

Abstract: Liquid filter arrangements are described and shown. The arrangements generally include a filter head, a seal adaptor, and a filter member comprising a shell enclosing a cartridge. Unique features for interface between the filter cartridge and the filter head are provided. Also provided are unique filter head features and cartridge features.

Abstract: A filter assembly comprising a filter head having inlet and outlet ports; a filter bowl attached to the filter head, wherein the filter bowl has a drain hole located at the bottom of the filter bowl for draining fluids; a filter element housed within the filter bowl, the filter element including a barrier of filtration media, a drain layer and at least one support tube; wherein a pressure differential exists across the filter element; a bottom cap that seals fluid within the filter element; a top cap having a non-planar flange portion, wherein the flange portion has a substantially curving, generally s-shaped cross-sectional profile, the non-planar flange sealingly received within the filter head such that the filter head is divided into inlet and outlet partitions; wherein the top cap directs fluid from the inlet port into the filter element, where the fluid flows through the barrier of filtration media and then out of the assembly through the outlet port; and, a float drain component attached to the base of

Abstract: A fluid filter constructed and arranged for threaded engagement with a fluid-delivery head for the filtration of an incoming fluid includes a molded plastic shell having a sidewall formed with a retaining ridge, a closed end and an opened end surrounded by a series of external threads, a fluid filter media pack installed into the fluid filter shell, the media pack including filtering media and an upper endplate bonded to the upper end of the filtering media, wherein the upper endplate includes a peripheral lip that is constructed and arranged to snap into position axially beneath the retaining ridge. The threaded engagement between the fluid filter shell and the fluid-delivery head eliminates the need for any nutplate.

Abstract: A liquid filter, in particular for the lubricating oil of an internal combustion engine, having a housing with an inlet and an outlet formed from a housing pot having a substantially downwardly open filter element installation opening and a screw-on cover that closes the installation opening, and a filter element arranged in the housing, sealingly separating the inlet from the outlet. The screw-on cover has a drain for residual liquid present in the housing with a round drain opening arranged in the central axis of the housing. A device for opening and closing the drain opening is arranged in the area of the drain and connected to an end disk of the filter element so that it moves relative to the drain opening and opens the drain when the cover is unscrewed.

Abstract: A modular filter system using replaceable filter cartridges includes matching adaptor rings in the filter head and on the filter cartridge placed at selected circumferential positions to ensure proper cartridge fit and to provide a proprietary cartridge construction for selected users. The adaptor rings operate only to control cartridge to filter head fit and are not used to drive the rotary valve spindle.

Abstract: A rotary valve spindle for flow control in the head of a filter includes a unitary dual function seal that is carried by the spindle and seals against the inner surface of the filter head during spindle rotation between flow and no-flow positions. The dual function seal greatly simplifies manufacture and assembly of the valve.

Abstract: Embodiments of the disclosure provide a sump liner for use with a fluid filter assembly in an appliance. The sump liner includes an open end configured to be coupled to the housing and a closed end opposite from the open end. The sump liner includes a body between the open end and the closed end with the body including at least one corrugated wall. The sump liner includes a cartridge-receiving cavity formed by the body and the closed end. The cartridge-receiving cavity is configured to at least partially cover a filter cartridge when the filter cartridge is inserted into and removed from the sump. The sump liner substantially prevents fluid from the filter cartridge from contacting the sump.

Abstract: A system comprising a fluid treatment assembly and means for feeding the assembly with fluid to be treated and receiving treated fluid, comprising a structure (12) on which the assembly is adapted to be removably mounted, to interengage complementary connectors thereof with each other, is characterized in that it includes cooperating functional surfaces (25) formed on the assembly and the structure (12) so that they can enter into mutual contact to immobilize the assembly against movement in translation and keep the connectors interengaged with each other when the assembly is mounted on the structure (12) and to allow the assembly to be released in order to remove it from the structure (12) by exerting on the assembly an action limited to tilting it relative to the structure (12) and guided by the connectors interengaged with each other.

Abstract: A filter system having individual compartments, a removable filter rack in each compartment, and an array of filter elements positioned in candle housing that are moveable into and out of the filter racks. Each compartment has an independent set of dirty oil inlets, clean oil outlets, overflow outlets, and air purge inlets, and is fluidly separated from adjacent compartments by the interior walls of the frame. Each rack may be disengaged from the various pipes and removed from the frame without disengaging the racks in adjoining compartments. As a result, the filter elements may be serviced without having to take the entire system off-line.

Abstract: A fuel-water filter/separator for threaded connection to a mounting base has a shell and a filtering media positioned within the shell. The shell has an open top end and a substantially closed bottom end. The shell is made of an opaque plastic except for a window in the shell made from a substantially clear plastic. The substantially clear plastic in the window being insert molded to the opaque plastic. The filtering media is positioned within the shell for filtering fuel. The shell defines a water collection portion beneath the filtering media, the window of the shell being positioned such that it overlaps at least a part of the water collection portion to allow water level monitoring.

Abstract: The present invention discloses an oil filter housing, comprising an upper bowl adapted to be mounted onto a filter-mounting base of an engine, a top end of the upper bowl being formed with oil inlets and an oil outlet, and a protruding structure being provided on an outer top end surface of the upper bowl, the protruding structure adapted to be engaged with the filter-mounting base so as to position the upper bowl and limit rotation of the upper bowl relative to the filter-mounting base; and a lower bowl detachably coupled to the upper bowl and a bottom end of the lower bowl being closed. The oil filter housing according to an embodiment of the present invention is simple in structure, low in cost, easy to operation and safe.

Abstract: A filter element is removably positionable within a filter housing defining a filter chamber for said filter element. The filter housing comprises a standpipe extending within the filter chamber. The filter element includes a tubular filter media circumscribing the standpipe, a first end cap supporting the filter media at one end thereof, a second end cap longitudinally spaced from the first end cap and supporting the filter media at the opposite end thereof, and a center tube extending between the first and second end caps. The center tube has at least one inlet opening therethrough, a bypass opening at a first end thereof adjacent to the first end cap and a standpipe opening at a second end thereof adjacent to the second end cap and through which the standpipe is adapted to be inserted longitudinally into the center tube.

Abstract: An assembly method and related subassembly for a water filter element in the housing of a replaceable filter cartridge provides for filter element insertion into the open bottom end of the housing and subsequent attachment of a retaining ring to the upper end of the element such that the element is secured against vertical drop-out until the bottom end of the cartridge can be enclosed with an end cap. The method and subassembly are particularly well adapted to cartridges in which the lower end cap is attached by spin welding. The enclosing end cap may also be provided with end rings to enhance the user's grip in cartridge installation and removal. The end rings may also be color coded for each of cartridge identification and matching to the filter head.

Abstract: Provided is a disposable multi-layered filtration device for the separation of blood plasma which can be applied to a biochip and appropriate for disposal uses. The filtration device for the separation of blood plasma includes: an upper substrate including a blood inlet; an intermediate substrate including a filtering unit for extracting blood plasma from blood flowing through the blood inlet; and a lower substrate including an air outlet, wherein the upper substrate, the intermediate substrate, and the lower substrate are stacked and adhered.

Abstract: A replaceable cartridge for use with a filter housing having a substantially closed dome end and a head end. The cartridge comprises a filter media connected to and extending between a head end endplate and a dome end endplate. The dome end endplate includes means for mating with the filter housing. The filter housing comprises a canister extending between a substantially open head end and a substantially closed dome end. The canister has an interior surface that includes corresponding means for engaging the filter cartridge. The means for engaging the cartridge is positioned substantially adjacent the dome end.

Abstract: A filter assembly for fuel is disclosed. The assembly includes a housing and a filter element located in the housing and held in place by a spring. In the space between the inner wall of the housing and the base of the filter element a compressibly resilient element is located which absorbs hydraulic pulses, the filter assembly is subjected to.

Abstract: A filter installation has a pivotably mounted flap (13), a filter head (15) mounted on the flap, a filter cartridge (16) mounted on the filter head. Flexible piping (18,19) is provided for supplying fluid to be filtered to the filter head and removing filtered fluid from the filter head. The flexible piping allows the flap (13) to be pivoted to an access position in which the cartridge is readily accessible for installation or removal. The installation is particularly suitable to be used on a vehicle such as a tractor in which the pivotable flap is the door on a battery box or other compartment of the vehicle. The filter cartridge can be used to filter bio-fuel for an engine of the tractor or to filter hydraulic fluid or transmission fluid.

Abstract: A detachable rotational filter supporter is disclosed. The supporter can: release a filter when the housing is rotated; block the flow channel immediately when the filter is separated from the filter supporter; automatically open the closed flow channel when the filter is installed to the filter supporter; and simultaneously hold the filter when the housing is located at the original position. Therefore, the detachable rotational filter supporter allows the filter to be easily separated from and installed to the water purifier and allows general users to simply replace the filters.

Abstract: A filter device having a filter element which has at least one end disk (19) having axially extending elevations (20) configured in the form of at least one recognizable character, in which the elevations correspond in configuration to passages (35-37) through an intermediate element (23). Behind the intermediate element there is an element (24) which faces the housing (10) of the filter unit and is provided with axially projecting appendages (30, 31) which extend into the passages (35-37) of the intermediate element (23). Intermediate element (23) and element (24) are axially movably mounted on a central mandrel (17), and the appendages (30, 31) can be pushed axially by the filter element (12) out of the passages (35-27) of the intermediate element (23) so that intermediate element (23) and element (24) can rotate relative to each other and move axially and the filter element can be moved to its fully installed position.

Abstract: Embodiments of a key system for filters and their connecting heads, brackets, or other holders are shown. The filter cartridge and its holder each have a keyed surface, one being a protruding “key” and one being a recessed “lock”. Cooperation of these keyed surfaces is required in order for the filter cartridge to be installed in the holder, so that mis-matched cartridges cannot be installed into the holder, for example, to prevent a particular type of cartridge from being placed in a filtration or other process where it would be inappropriate, or undesired. The keyed surfaces are selectively locate-able preferably at different circumferential locations on a perimeter of the filter and a corresponding location on a perimeter of the head/holder. The perimeter may be, for example, on an outer shoulder surface of a filter and an inner surface of a valve head, or on outer and inner surfaces of connectors that provide a liquid seal between the filter and the head/holder.

Abstract: A bracket system holds one or more filters in quick-attach and quick-release fashion. Bracket modules are combined in modular fashion, with tubing or other conduit between the modules, to create a “bank” of filters easily changed in number, arrangement, and flow scheme. Preferably, the bracket system comprises pairs of top modules and bottom modules that capture and support the top end and bottom end of a filter. Filter inlet and outlet ports preferably slide onto and off of cooperating tubes or ports in the bracket modules, for installation and removal of the filters onto/from the modules without tools or threaded connections. A top retaining member preferably pivots off of its respective filter, so that the filter may be lifted up off of its respective bottom module. The bottom modules may be pivotal, so that lifting the filter up from the bracket system is facilitated by allowing the filter top end to also pivot out away from the top module.

Abstract: A filtration module is provided which includes a manifold (100), a filtration cartridge (104) and a bowl (102) that houses the filter cartridge. The filtration cartridge and bowl are connected to each other to form a unitary construction. The filtration cartridge and bowl are in fluid communication with the manifold in a manner which prevents mixing of a fluid feed to the module and a permeate removed from the module.

Abstract: A cartridge for treating water, the cartridge capable of releasably engaging a water treatment device. The cartridge includes a housing, an inlet for introducing untreated water into the cartridge, an outlet port for egress of treated water from the cartridge, and a treatment media for treating untreated water The treatment media is in fluid communication with the inlet and the outlet port. The cartridge further includes a first tube having an inside surface, an outside surface, a proximal end, and a distal end, where the inside surface and/or the outside surface is a sealing surface. The cartridge further includes a second tube having an inside surface, an outside surface, a proximal end, and a distal end, where the inside surface and/or the outside surface is a sealing surface. The first tube extends from the housing and surrounds the outlet part. At least a portion of the first tube or the second tube surrounds the other such that a gap is formed between the first tube and the second tube.

Abstract: An assembly for collecting material entrained in a gas stream comprising a housing having a head part and a body part, and inlet and outlet ports. A chamber port is provided in the head part having internal walls defining a primary chamber with a first end communicating with the chamber port and an opening at a second end. The axis of the first and second ends of the primary chamber are non-aligned. A flow conduit device has a first end which can fit into the primary chamber in the housing head part so that it is directed generally towards the chamber port in the housing and a second end which is directed towards the body part of the housing to provide a conduit for gas to flow between the body part of the housing and the outlet port. The flow conduit reduces turbulence in the flow of gas within the chamber.

Abstract: A water purification apparatus includes a main body having an accommodation chamber inside and a plate on a top side thereof, a lid pivotally mounted on the main body and closable on the main body, a holder mounted with the plate of main body and defining with the plate of the main body a distance, a top cover pivotally mounted with the holder and having a retaining portion, an inlet and an outlet opposite to the inlet, and a housing having a jamming portion detachably engageable with the retaining portion of the top cover, a first water filler hole in communication with the inlet of the top cover and a second water filler hole in communication with the outlet of the top cover. The water purification apparatus has the advantages of being convenient to exchange a filter.

Abstract: Disclosed is a strengthening construction for depressing cap of water filter, said depressing cap has a water inlet and a water exit, a pipe line which does not form a via hole for connecting said water inlet and water exit is formed between said water inlet and water exit, and a water falling hole is formed at said pipe line near said water inlet, in addition, a water outlet is formed at the central portion of said pipe line, on the inner wall of the depressing cap, a plurality of gripping elements for firmly holding filter core are separately formed and circularly arrayed, characterized in that: at the base portions of said gripping elements, at least a ring-shaped protecting wall in formed to connect the base portions of said gripping elements. Such that when the water filter is impacted by external force, the impact force on the gripping elements shall be dissipated.

Abstract: A water purifying device includes a filter unit that can be easily coupled and separated. The water purifying device includes a filter unit to filter out impurities from water passing therethrough and a connection unit connected to the filter unit to transmit water from the outside to the filter unit and to transmit the water purified by the filter unit to the outside. The connection unit includes an external case having an introduction port through which water is introduced from the outside and a discharge port through which purified water is discharged to the outside, an internal case rotatably mounted in the external case, the internal case having a first communication hole selectively communicating with the introduction port and a second communication hole selectively communicating with the discharge port, and an opening and closing valve to selectively open and close the first communication hole depending upon whether the filter unit is coupled or not to the connection unit.

Abstract: Baffle plate and gasket arrangements are provided. The arrangements include a baffle plate (60) and gasket (104). Preferred arrangements include the baffle plate (60) having an outer peripheral sidewall (64) defining a gasket seat, with a gasket mounted within the seat such that an axial seal is formed against an appropriately positioned structure on a housing can. Housing arrangements for fluted filter arrangements include a can, a baffle plate, and a gasket. The gasket is mounted with respect to the baffle plate and the can to form an axial seal between the can and the baffle plate. Filter arrangements including a housing of the type characterized and a filter cartridge operably mounted therein. In addition, methods of assembly and use are provided.

Abstract: A water-conditioning cartridge has a housing that encloses an ion exchanger and can be screwed via a screw thread onto a cartridge-connecting fitting. The cartridge is provided with a water inlet for admission of untreated water, especially from a water-supply system, and with a water outlet, which is connected or can be connected to a consuming component, especially a beverage machine. To ensure that the water-conditioning cartridge can be screwed onto only a particular cartridge-connecting fitting designed for this type of water-conditioning cartridge, the housing and the cartridge-connecting fitting are each provided with a plurality of annular coding ribs, which are disposed concentrically relative to the thread axis of the screw thread, and which engage with one another when the housing is screwed onto the cartridge-connecting fitting.

Abstract: A three-piece filter system comprises a base, a deep pocket filtering media, and a housing shell. The base is adapted to be fitted/threaded onto an engine block, with a sealing surface to provide a seal with the engine block. The filtering media and cap member is placed pleated-media end down into the housing shell. The filtering media self centers and the housing shell with the filtering media attached is attached to the base. The unitary filtering media and cap member are formed as a replaceable component that seats into the housing shell without a center tube or other outside support. When the housing shell is threaded onto the base, the cap member is sandwiched between a ledge on the shell and a seal on the base. The filter media itself is a solid block and has no center tube. The filter media is a solid pleated pocket design affixed to the cap member. In the preferred design, the filter element is square rather than round to increase surface area.

Abstract: A liquid filter, in particular for the lubricating oil of an internal combustion engine, having a housing with an inlet and an outlet formed from a housing pot having a substantially downwardly open filter element installation opening and a screw-on cover that closes the installation opening, and a filter element arranged in the housing, sealingly separating the inlet from the outlet. The screw-on cover has a drain for residual liquid present in the housing with a round drain opening arranged in the central axis of the housing. A device for opening and closing the drain opening is arranged in the area of the drain and connected to an end disk of the filter element so that it moves relative to the drain opening and opens the drain when the cover is unscrewed.

Abstract: A combined filter cartridge and manifold for use in a water purification system or the like, to facilitate substantially drip-free filter cartridge removal and replacement. The filter cartridge includes water inlet and outlet ports for respective connection with inlet and outlet fittings on the manifold. A pivoting manifold cap normally overlies and retains the filter cartridge in connected relation with the manifold fittings and a water supply coupled to the manifold. Pivoting movement of the manifold cap toward an open position shuts off the water supply and then permits filter cartridge separation from the manifold, with check valves at the manifold inlet/outlet fittings and cartridge inlet/outlet ports preventing significant water leakage.

Abstract: A one-touch fitting type adapter and a filter assembly are provided in which the filter assembly used for machinery, such as a bidet or a refrigerator, is easily assembled with or disassembled from the adapter through a one-touch fitting manner such that the filter assembly is easily adapted for the machinery. A multiple adapter capable of coupling a plurality of adapters in series is provided such that a plurality of filter assemblies used for a water purifier, a water ionizer or a functional water maker are detachably engaged with the multiple adapter through a one-touch fitting manner.

Abstract: This invention relates to a filter assembly for removing material that is entrained in a gas stream. The filter assembly comprises a housing which comprises head and body parts, with an inlet port in the head part for a gas stream to flow into the housing, the head and body parts having formations which enable them to be connected to one another and separated by relative rotation. The filter assembly further comprises a filter element which can be fitted within the housing. The filter element comprises a wall of a filtration medium which defines a hollow space for a gas stream to flow from the space through the wall to be filtered, and an end cap with an inlet which can be sealed to the inlet port in the head part of the housing to provide a flow path for a gas stream to be supplied from the inlet port in the housing to the said space.

Abstract: The invention relates to a filter device having a filter housing part (10) which comprises a filter element (12) and which can be detachably connected to the other filter housing part (20). Because there is a valve means (24) which clears a fluid path in the interconnected state of the housing parts (10, 20) and in the separated state of the housing parts (10, 20) from one another at least partially blocks it, instead of known quarter-turn fastener and stopper solutions a blocking means is devised which can be economically implemented and which requires decidedly less installation space. The invention relates also to a process for operation of a filter device.

Abstract: A filter assembly capable of being directly mounted to a transmission housing or to a structure other than the transmission housing. The transmission housing includes a cavity, or groove that receives a sealing device, which is used when the filter assembly is to be directly mounted to the transmission housing. Both the transmission housing and the filter assembly include threaded portions in communication with additional grooves, or chamfers that receive additional sealing devices. For remote mounting, hoses, having coupling devices, are attached to the threaded portions such that the filter assembly may be attached to the structure other than the transmission housing.

Abstract: Some embodiments of the present invention provide a modular fluid treatment assembly and method in which modules of the system each have a head that can be connected to one or more heads (of one or more other modules) in different configurations. In some embodiments, the relationship between a cartridge of the module and its corresponding head prevents fluid from entering between the cartridge and an external shell of the module. Also, some embodiments provide a module having a head with substantially concentric inlet and outlet ports in fluid communication with a cartridge coupled to the head.

Abstract: A liquid filter, in particular for internal combustion engines, having a filter housing with an essentially hollow cylindrical filter element arranged therein in a sealing manner to separate an unfiltered liquid side of the filter from a filtered liquid side. The filter element is supported on a connecting element having contours for forming a form-fitting connection through which the liquid filter is detachably and sealingly connectable to a counterpart. The counterpart may be a flange connected directly to a machine assembly, or it may be an adapter element for adapting the form-fitting connection to connect to a conventional threaded connector.

Abstract: A fluid filter system has a manifold having a fluid inlet with an inlet stop and a fluid outlet with an outlet stop and a cartridge seat. A cartridge is separable from the manifold and adapted to mount and dismount in the manifold. The cartridge has a filter housing containing a filter for filtering fluid, and an integral closure member having a first level and a second level. A radial inlet port is on a face of the first level of the closure member and an axial outlet port is on top of the second level of the closure member. A first boss on the closure member opens the inlet stop when the cartridge is mounted in the manifold. A second boss on the closure member is disposed to open the outlet stop when the cartridge is mounted in the manifold. The bosses engage the stops sequentially.

Abstract: A method of and system for purifying fluid of an internal combustion engine or hydraulic system utilizes an evaporation chamber separate from a filtering chamber. A metering valve may be oriented between the filtering chamber and the evaporation chamber to control the flow of fluid to the evaporation chamber.

Abstract: A filter assembly comprising a housing with a threaded open end, a filter element, and a cover assembly. The filter element includes a media ring and a pair of end caps, one of which includes outwardly-projecting fingers. The cover assembly includes a cover member, and a sleeve with recesses in an outer surface. A collar member surrounds the sleeve and is freely rotationally supported by the cover member. The collar member includes i) a threaded portion on an outer surface for screwing the cover member onto the housing, and ii) recesses in an inner surface. The collar member is rotatable relative to the sleeve such that the recesses in the collar member and in the sleeve can be aligned, and the fingers can be inserted therebetween, to rotationally lock the collar member relative to the sleeve and to retain the element with the cover.