Abstract: A filter, in particular for compressed gas systems, includes a filter top part having at least one inlet channel and at least one outlet channel and a filter bottom part having a filter element, wherein the filter top part has a pressure-resistant housing and an insert which is suited in an optimal manner to the course of the inlet and outlet channels.

Abstract: The invention relates to a filtering apparatus in which improvement of maintenance of a driving system, reduction of the number of components, and ease of assembly are achieved.

Abstract: An oil filter assembly is disclosed for a machine, such as an internal combustion engine, that has an oil output port and an oil input port. A mounting plate is fixed with an outer enclosure and is adapted for securing to the machine. The mounting plate is further adapted to conduct oil from the machine into a peripheral portion of the outer enclosure, and then returning oil from a central portion of the outer enclosure back to the machine. Oil may pass from the peripheral portion to the central portion through a primary filter having a first porosity. A pressure-actuated valve is fixed fluidly between the peripheral portion and central portion of the outer enclosure. Oil may pass through the pressure-actuated valve only when an oil pressure differential between the peripheral portion and the central portion of the outer enclosure exceeds a predetermined threshold pressure.

Abstract: A filter assembly for removing material entrained in a fluid stream, comprises a housing for a filter element, having a head part and a body part for receiving a filter element, and inlet and outlet ports for the fluid that is to be filtered. The head part and the body part each have engagement formations which enable the head and body parts to be connected to one another and separated by relative rotation about an axis which is coaxial with a head axis and a body axis. Head and body part keying formations can be provided in the form of at least one recess which is provided in a rib on one of the head and body parts, and at least one projection which is provided on the other of the head and body parts.

Abstract: A filter assembly for removing material entrained in a fluid stream includes a housing having a head part and a body part, and inlet and outlet ports for the fluid that is to be filtered, in which at least one of the ports is provided in the head part, the head part having a chamber port fluidly connected to the at least one port in the head part, the head and body parts having first formations which enable them to be connected to one another and separated by relative rotation. The assembly includes a filter element for removing material entrained in the fluid stream that can be received in the body part, the filter element and body part having second formations which restrict relative rotation between them, the filter element having a filter port, in which a fluid tight connection can be provided between the filter port and the chamber port by sliding one of them into the other along a first axis.

Abstract: A disposable, spin-on fluid filter for mounting to a fluid-directing head includes a molded housing having a closed base and a sidewall defining a hollow cavity. Filtering media is positioned within the hollow cavity and a nutplate is joined to the housing so as to enclose the filtering media. The nutplate includes a plurality of inlet flow openings and a lobed sleeve extending into the filtering media. An endplate is joined to the filtering media including a flange portion and a sleeve portion. The fluid filter includes an elastomeric valve having a first portion positioned between the flange portion and the inlet flow openings and a second portion positioned between the sleeve portion and the lobed sleeve. The valve provides an anti-drain back capability and in cooperation with the lobed sleeve provides a filtering media by-pass capability.

Abstract: A device for treating water, particularly a filtration device, including a cartridge, which has a receptacle for receiving treatment agents for water, particularly for receiving filtration agents, and a connecting head disposed on the receptacle, wherein the connecting head at the outer surface thereof has at least one inlet opening and at least one outlet opening. The device further includes a connecting element, which has a holder for the connecting head with at least one inflow opening and an outflow opening, which are connected to the inlet and outlet openings of the connecting head in a sealing manner by means of sealing elements. The connecting head is tapered toward the free end, wherein the outer surface has at least one first curved outer surface section, which is inclined toward the longitudinal axis of the cartridge, and a second outer surface section opposite from the first outer surface section. The inlet and outlet openings are located in the first and/or the second outer surface sections.

Abstract: A filter assembly for fluid filtration having a push-activated lock and release mechanism. A push filter design activates a floating key lock upon insertion and extraction, where the filter key may be used simultaneously as a lock and as an identifier for particular filter attributes. The filter base may be situated inline, and in fluid communication, with influent and effluent piping, such as within a refrigerator. The filter housing assembly may be attached to, and removed from, the filter base by a push-actuated release. Upon insertion, the filter key shifts the filter lock longitudinally to receive interlocking segments. Upon extraction, the same axial push shifts the filter lock further to align the interlocking fingers within gaps that allow for easy extraction. The specific key lock design allows a user to identify and match certain filter configurations received by the mechanical support, and reject other filter configurations.

Abstract: A universal cartridge filter housing has an upper cap and a lower housing. An inlet and a first outlet are formed through the upper cap, and an inlet mouth and an first outlet mouth are respectively formed around and upwardly protrude from top openings of the inlet and the first outlet so that the universal cartridge filter housing is universally applicable to all sorts of filter cores and serves as a standard part to significantly reduce the production cost and users' expense and facilitate extensive promotion and usage. As the inlet mouth and the first outlet mouth are concentrated on a top of the upper cap, multiple universal cartridge filter housings can be gathered together for operation, flexible tubes connected to the inlet mouth and the first outlet mouth and the second outlet mouth can be also centralized, thereby facilitating replacement of each filter core and enhancing the work efficiency at maintenance.

Abstract: A liquid filter suitable for motor vehicles which includes a filter head (11), a vessel (12) and a filter element (16) disposed within the vessel (12) sealingly separating an inlet (14) from an outlet (15) such that liquid from the inlet must flow through the filter element to reach the outlet. The filter element (16) has guide projections (27, 28) positioning the filter element (16) within the vessel (12). Prior to installation, the filter element (16) is preassembled into the vessel (12) and fixed in position by pushing the filter element (16) into an element guide (29), after which the preassembly is screwed onto the filter head (11). When the vessel (12) is unscrewed from the filter head (11), the filter element (16) slides out of the element guide (29) and moves axially upwardly to free a volume V. Liquid flowing into the vessel (12) from the higher regions of the liquid filter (10) can flow into this volume, thus enabling drip-free replacement of the filter element.

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: A fluid treatment assembly defines a treatment chamber and includes a treatment sub assembly positioned in an assembled condition in the treatment chamber. The treatment sub assembly includes a plurality of treatment members. The treatment assembly is arranged so that in use a fluid for treatment flows through the treatment members.

Abstract: A filter assembly where the filter cartridge is secured to the nutplate and a seal is provided between the filter cartridge and the nutplate. The sealing relationship between the filter cartridge and the nutplate is maintained during use of the filter assembly without using a spring engaged with the filter cartridge that biases the filter cartridge into engagement with the nutplate.

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 fluid filtering apparatus and method may include keyed components to ensure that a correct filter element is being installed into a filter base. Keyed arrangements may occur between a filter element and a filter housing, a filter and a filter base, and a filter base and a filter housing. A locking arrangement may be provided to prevent undesired loosening of a filter relative to a filter base. The filter base may include a torsion lock insert that engages lock detents of a filter to prevent the undesired loosening. An adaptor may be provided to provide the lock detents that interact with a torsion lock insert.

Abstract: A marine water separating fuel filter includes a connecting tube head, an upper lid, a filter element, and a container. The filter element is accommodated in the container and sealed by the upper lid, with an axial inlet opening and a limiting ring provided on a hollow taper post to hold against the filter element. An axial pipe of the connecting tube head is screwed to the axial inlet opening. The connecting tube head has a pressing ring to hold against a washer, providing a sealing function. The unfiltered fuel from an inlet end is filtered with the filter element and then filtered fuel expelled through an outlet end. An indication ring is provided on the hollow taper post to indicate the height of liquid. This is an easy and quick way to assemble and disassemble the filter element, providing environmental and economical purposes.

Abstract: Provided is a dialysis probe capable of stably performing an analysis with high accuracy for a long period of time even if the inflow and outflow rates of a perfusate are not completely equalized.

Abstract: A quick attachment feature for a filter includes i) a pair of radially-outward projecting pivots on opposite sides of the filter canister toward a lower end thereof; and ii) a pair of flexible retaining clips also located on opposite side of the canister toward the upper end thereof, each clip in substantial axial alignment along the canister with a respective pivot. The filter can be supported in a bracket including a pair of side walls, each of the side walls including i) a hook-shaped opening dimensioned to receive a respective pivot on the filter, and allow the filter to pivot from an orientation at an angle to the longitudinal axis of the bracket, to an orientation where the filter is substantially axially-aligned with the bracket; and ii) a catch dimensioned to engage and retain a respective retaining clip, when the filter is substantially aligned with the bracket.

Abstract: A filter element includes a cylindrical housing enclosing a ring-shaped filter media assembly. The media assembly includes inner and outer media rings, moveably supported relative to one another, to remove particulate matter and water from a fluid stream. The outer ring surrounds the inner ring and is sealed by a first seal to the housing. An end cap assembly at the upper end of the element includes an annular end cap piece attached to an upper end of the inner ring, a flat plate, and a threaded flange portion bounding the periphery of the plate. A second seal is provided between the upper end cap of the inner ring, and an upper end cap of the outer ring. The housing is secured to the media assembly by forming an open end of the housing around the flange portion.

Abstract: A filter head, designed to hold at least two filter elements. The filter head having a housing, into which feed channels to, and return channels from, the filter elements are integrated. A rotatable switching drum is provided for selectively opening or closing the channels to control the flow of fluid to the filter elements. The filter head has a cover, which closes off the housing, and a spring element, which produces an axial force which presses one of the sealing surfaces of the switching drum against the cover and the other sealing surface of the switching drum against the housing.

Abstract: Disclosed herein is a filter assembly for water purifiers. The filter assembly includes a head having an inlet duct, a control valve, and an outlet duct. A circular cap is provided on the lower portion of the head, and has cylindrical space. A filter cap is mounted to the circular cap. A filter cartridge has a filtering part which is provided with a filter to purify water. A plurality of fastening holes is formed in the outer circumference of the circular cap, and has a step. Locking parts are disposed in the fastening holes to lock the filter cartridge. An elastic member surrounds the circular cap and the outer surfaces of the supports parts, thus elastically supporting the locking parts to the fastening holes. The filter cap has on the outer circumference of the upper portion thereof a plurality of fastening holes into which the locking parts are fitted.

Abstract: A housing has a cylindrical side wall with lower and upper ends. The housing has a cylindrical chamber with an enlarged upper region. A basket is positioned within the chamber supported at the lower end of the housing. A filter has a central cylinder and outwardly extending filtering surfaces. The central cylinder is provided coaxial with the side wall. A stationary cap is attached to the upper end of the housing. The stationary cap has an upper end with a threaded aperture. The stationary cap has input and exit passages. A filter cap has a threaded exterior surface removably received in the threaded aperture. A flow discharge passage has a lower end positioned within the filter. The flow discharge passage has an upper end coupled to the exit passage. An annular flow cavity is provided between the flow discharge passage and the exit passage.

Abstract: A filtering apparatus includes a pot-type filter housing (10), a filter element (28) accommodated in the housing, a holding mechanism (38) disposed in the filter housing (10) to removably fix the filter element along its longitudinal axis, and a sealing device (60) that seals between a lid (20) of the filter housing (10) and the filter element (28). The holding mechanism (38) is provided with cooperating holding elements embodied on the interior face of the filter housing (10) as well as on the filter element (28). The filtering apparatus dispenses with the need for O-seals that are known in prior art and extend in a radial direction between the filter element and the filter head as a housing lid because the sealing device (60) encompasses at least one sealing edge (62) or sealing surface placed parallel to the longitudinal axis in a radial direction and seals under the effect of the pressure applied it by the holding mechanism (38).

Abstract: A water treatment apparatus includes a frame and a plurality of connecting accessories, manifolds and filter cartridges. Each of the connecting accessories includes a seat ring fixed on the frame and a communicating pipe coaxially received in the seat ring. The seat rings together with the communicating pipes are spaced at a distance from one another. Each of the manifolds is suspended between adjacent two of the connecting accessories and has inlet and outlet ports at opposite ends. The inlet and outlet ports of each of the manifolds are rotatably and coaxially received in adjacent the seat rings respectively with their exterior walls in contact with inner walls of adjacent the seat rings and their interior walls in contact with outer walls of adjacent the communicating pipes. Additionally, the filter cartridges are detachably joined to the manifolds respectively.

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 filter assembly (10) for fluids, comprising a generally cylindrical container (3), a cylindrical filter cartridge (4) housed inside said container (3) and a closing cover (1) with centering means (11) of the filter cartridge (4) on the bottom of the container. The centering of the cartridge (4) during its assembling is ensured by an annular centering member (9) disposed on the outer surface of the filter cartridge (4) and cooperating with engagement means (31) formed on the inner surface of the container (3). The seal between the container (3) and the cover (1) is formed by a member (13) overmoulded to the upper edge of the container (3).

Abstract: A filter device, especially a line filter forming part of hydraulic installations, includes a filter housing (1) that can be removed from a filter head and is used to receive a filter element (5) that separates a non-filtered side (13) from a filtered side (11) in a position in the filter housing for the operation of the filter. The filter device is provided with a display device (19, 21) signaling the absence or presence of the filter element (5) in the filter housing (1) in the operating position.

Abstract: A fuel filtration apparatus for use in an internal combustion engine comprises an interrupter valve in a flow path from an inlet port of a filter head to a compliant filter. The interrupter valve has an open state and a closed state. In the open state a protruding member of the filter depresses a bottom end of the valve and opens the flow path when the compliant filter is connected to the filter head. The interrupter valve also has a closed state wherein the flow path is closed in the absence of the protruding member of the filter (as with a non-compliant filter).

Abstract: A fuel filter, in particular for Diesel engine fuel, comprising a closed casing, the internal volume of which comprises at least a first chamber, connected to an inlet for the fuel to be filtered, and a second chamber connected to an outlet for the filtered fuel. A filter screen and a hydrophobic mesh are positioned between the first chamber and the second chamber, and the filter screen is removably fitted to the filter, independently of the hydrophobic mesh.

Abstract: A diesel filter includes a filter member and a water reservoir formed below the filter member. The filter member has a case, a cap for closing the opening of the case, an element, and an element-holding member for holding an upper part of the element, and is detachably housed in the case. The element-holding member has an opening that allows fuel to flow out, and the fuel introduced from a fuel inlet port to a portion above the element-holding member is then introduced to the water reservoir via a passage formed between the inner peripheral surface of the case and the outer peripheral surface of the element.

Abstract: A filter system for filtering fluids has a filter head and a filter cup with a rim area, wherein the filter cup is connected detachably by the rim area by a rotational and/or plug-in movement to the filter head. A filter element is exchangeably arranged in the filter cup. A sealing device with several sealing areas is provided that seals the filter head relative to the filter cup. The filter element has a connecting end disk arranged at an end face that is facing the rim area of the filter cup. On the connecting end disk at least two of the sealing areas of the sealing device are arranged so as to extend circumferentially in such a way that a first sealing area seals the connecting end disk relative to the filter head and a second sealing area seals the connecting end disk relative to the filter cup.

Abstract: A water treatment apparatus includes a frame and a plurality of connecting accessories, manifolds and filter cartridges. Each of the connecting accessories includes a seat ring fixed on the frame and a communicating pipe coaxially received in the seat ring. The seat rings together with the communicating pipes are spaced at a distance from one another. Each of the manifolds is suspended between adjacent two of the connecting accessories and has inlet and outlet ports at opposite ends. The inlet and outlet ports of each of the manifolds are rotatably and coaxially received in adjacent the seat rings respectively with their exterior walls in contact with inner walls of adjacent the seat rings and their interior walls in contact with outer walls of adjacent the communicating pipes. Additionally, the filter cartridges are detachably joined to the manifolds respectively.

Abstract: A filter assembly comprises a filter (10) defining path for fluid passing to or from the filter (10). An adaptor (11) is connected to the filter (10) and provides a continuation of the path. The adaptor (11) is for mounting the filter (10) on a mounting plate (12) and carries one or more sealing rings (30, 37) that are engageable with the mounting plate (12). The adaptor (11) is made from a plastics material and one surface of the adaptor (11) is reinforced by contact with an annular reinforcing member (31) which may be of metal, particularly steel. This allows the flow path provided by the adaptor (11) to be maximized.

Abstract: A diesel filter includes a case, a cap for closing the opening of the case, an element housed in the case, and an attachment member having a holding portion and a bracket. The attachment member and the cap hold the case therebetween. The bracket is provided to fix the diesel filter to a predetermined portion. The cap can be detached in a state where the attachment member is fixed to the predetermined portion by the bracket, so that the element can be replaced in the same state.

Abstract: A filter assembly, having a housing including a housing bottom portion; at least one ring filter element that is received by at least one receiving space defined at least in part by the housing, wherein the receiving space includes a receiving space bottom portion; a cover attached to the housing bottom portion and configured for at least partially enclosing the at least one receiving space and the ring filter element, wherein the at least one receiving space may be selectively emptied when the cover is removed; an outlet located at the receiving space bottom portion within the cover; and a closure located on the at least one ring filter element, wherein the closure is configured to at least partially close the outlet when the at least one ring filter element is inserted into the at least one receiving space.

Abstract: A novel surface treatment is provided for portions of filter media coming in contact with the filter media holder, such as filter housing. In certain applications, the treatment is also applied to the filter media holder, depending on the application. Filter media having at least two distinct surface property modifications are provided in liquid filtration applications to enhance the performance of a filtration system, reduce the cost of the system, provided a visual means of detecting fluid bypass, and minimize fluid holdup volume within the filter media, all with substantially no loss of performance performances parameters, even in steam sterilization applications.

Abstract: An apparatus for filtering liquids and the related filtering component, wherein the apparatus includes a head detachably associated to a container that accommodates a mechanically-acting filtering component; the head is provided with an inlet for the liquid to be filtered, which is connected to the portion of the container upstream of the filtering component, and with an outlet for the filtered liquid, which is connected to the portion of the container downstream of the filtering component. The apparatus has an antimicrobial structure.

Abstract: A filter media includes a media pack having a central opening that extends between opposing ends of the media pack. A support member, such as a center tube, extends through the central opening and supports one of the opposing ends. A second support member, such as a filter cartridge assembly guide, is secured to the second support member and supports the other of the opposing ends. In one example, the center tube includes a seat that extends radially outwardly from an axially body of the center tube to support the media pack. The first and second support members are secured by an interlocking connection of any suitable configuration. The disclosed arrangement can be used to reduce the number of components required for providing a large number of filter cartridge assembly. Each of a plurality of media packs provide different heights. A first support member is selected to support one of the opposing ends. A second support member is selected to accommodate the height of the selected media pack.

Abstract: A replaceable liquid filter, particularly for the lubricating oil of an internal combustion engine, having a substantially cup-shaped housing with a concentrically disposed outlet opening for the filtered liquid and at least one inlet opening for the liquid to be filtered and a filter element sealingly disposed between the inlet opening and the outlet opening. The housing is connected to a top plate, and the top plate is connected to an end plate. A connector for releasably coupling the replaceable liquid filter to a mating part is disposed concentrically in the region of the cover plate, such that the connector extends axially beyond the contour of the replaceable liquid filter.

Abstract: A filter assembly having a filter head having inlet and outlet ports and a top cap having a substantially curved, non-planar flange portion, the non-planar flange sealingly received within the filter head such that the filter head is divided into inlet and outlet partitions. In some embodiments, the flange portion has a generally s-shaped cross-sectional profile. The flange portion incorporating a modified venturi for improved flow of both inlet and outlet streams through the filter assembly.

Abstract: A manifold for a fuel filter assembly includes a first base, which may define a first inlet passage to direct flow to a first filter element, and a first outlet passage to direct flow from the first filter element to a second base. The manifold includes a second base, which may define a second inlet passage to receive flow from the first base and direct the flow to the second filter element, and a second outlet passage to receive the flow from the second filter element. The manifold includes a diverting module, which may provide flow communication between the first outlet passage and second inlet passage, such that flow in the first inlet passage passes through the first filter element before entering the second inlet passage. The first and second inlet passages may define a common longitudinal axis. The first and second outlet passages may define a common longitudinal axis.

Abstract: A filtering membrane module and a filtering apparatus having the same, which is capable of remarkably reducing a vibration of filtering membrane module during an aeration process for a maintenance cleaning of filtering membrane, and preventing a crack from occurring in the filtering membrane module by the vibration, wherein the filtering membrane module comprises a filtering membrane; a header, to which the filtering membrane is potted, including a first lateral side and a second lateral side opposite to the first lateral side; a first coupling unit provided at the first lateral side; and a second coupling unit provided at the second lateral side.

Abstract: A filter, comprising: a housing defining an inner cavity; an inner sleeve disposed within the housing, the inner sleeve having portions in a spaced relationship with respect to the an interior surface of the inner cavity; a plurality of tab members extending away from the inner sleeve, the tab members being configured to be removably secured to a feature of a cap, the cap being configured to engage the housing to provide a first position and a second position with respect to the housing, wherein the first position seals the inner sleeve to the housing and a fluid filtration path from an inlet of the filter to an outlet of the filter is defined by the inner sleeve and the second position provides a fluid drain path through an opening in the cap, the fluid drain path being closed when the cap is in the first position; and a filtration media disposed within an interior area of the inner sleeve, wherein the filtration media is disposed in the fluid filtration path and fluid flow through the outlet opening must pa

Abstract: A filter assembly for filtering water from an external source, the filter assembly having a manifold assembly and a filter cartridge. The filter cartridge includes a cartridge engagement means while the manifold includes a manifold engagement means. The cartridge engagement means and manifold engagement means cooperatively interfacing for removable attachment of the filter cartridge to the manifold assembly. The cartridge engagement means and manifold engagement means oriented in a retaining relation during removal of the cartridge filter from the manifold assembly such that any entrained pressure within the cartridge filter is vented while the cartridge engagement means and manifold engagement means are in the retaining relation.

Abstract: A filter element includes a cylindrical housing enclosing a ring-shaped filter media assembly. The media assembly includes inner and outer media rings, moveably supported relative to one another, to remove particulate matter and water from a fluid stream. The outer ring surrounds the inner ring and is sealed by a first seal to the housing. An end cap assembly at the upper end of the element includes an annular end cap piece attached to an upper end of the inner ring, a flat plate, and a threaded flange portion bounding the periphery of the plate. A second seal is provided between the upper end cap of the inner ring, and an upper end cap of the outer ring. The housing is secured to the media assembly by forming an open end of the housing around the flange portion.

Abstract: A fluid filter for a fluid circulation system having a filter mount, the fluid filter having: a housing; a filter element disposed within the housing; a tapping plate secured to the housing, the tapping plate defining a fluid inlet path for fluid to be filtered by the filter element and a fluid outlet path for fluid filtered by the filter element; and wherein a first peripheral edge portion of the tapping plate is engaged by a distal end of the housing that is bent around the first peripheral edge portion of the tapping plate and a second peripheral edge portion of the tapping plate is secured to an inner surface of the housing by an adhesive disposed between the second peripheral edge portion of the tapping plate and the inner surface of the housing.

Abstract: A filter element includes a ring of filtration media circumscribing a central axis, and first and second end caps. The first end cap includes i) an annular body portion defining a central opening around the central axis, sealingly bonded to the first end of the media ring, ii) an annular sealing ring having an annular, peripheral resilient sealing portion; and iii) axial support stanchions around the periphery of the body portion. The stanchions support the sealing ring at a location spaced apart from the body portion, and define radial flow openings between adjacent stanchions. One or more non-radial flow members extend from each stanchion along the outer surface of the annular body portion to direct flow in a spiral or helical manner, where the flow then passes through the flow openings and downwardly along the outer surface of the media in a swirling manner.

Abstract: A filtering assembly includes a container and a filtering cap which is connected to a connection end of the container. A flange extends spirally from an outside of the connection end and includes a positioning portion which is the longest section of the flange. The filtering cap includes an inner skirt and an outer skirt, wherein the inner skirt has a groove defined in an inside thereof the flange can be engaged with the groove. The groove has a positioning port which is the deepest portion of the whole groove. A plurality of bosses extend from an inside of the outer skirt. The positioning portion is engaged with the positioning port and the bosses are engaged with the wave-shaped ring when the filtering cap is located onto the container.

Abstract: Filter device (10) is provided with a head (20), a filter element (40), and a housing (30). The head (20) is provided with an inlet (24) which is attached to a hydraulic circuit (5), and into which flows the operating oil (L1) that is to be filtered. The filter element (40) filters the operating oil (L1) that is to be filtered. The housing (30) has an opening (30b) through which the filter element (40) passes, and which holds the filter element (40) inside it. The filter element (40) is provided with an element main body (48), and an element pressing part (47). The element pressing part (47) is provided to the element main body (48). The element pressing part (47) is provided with a contact part (53) that can be shifted toward or away from the inner surface (30a) of the housing (30). A groove (35) that holds the contact part (53) is provided to the housing (30). The contact part (53) can be shifted until it comes out of the groove (35).

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.