Abstract: Provided is a water ionizer which can detect a detection target installed at a predetermined position of a genuine filter to recognize that a genuine filter is loaded, which makes it possible to raise the reliability of the water ionizer and to extend the lifespan of the water ionizer. The water ionizer capable of recognizing a genuine filter, which has a water purifying filter for filtering foreign matters contained in original water, includes a sensor that is operated by a detection target attached to a proper position of a filter case of the water purifying filter; and a controller that checks whether a genuine water purifying filter is loaded or not, based on the sensing result of the sensor, and then stops the operation of the water ionizer when a genuine water purifying filter is not loaded. The water ionizer may further include a guide unit that guides the water purifying filter such that the water purifying filter is loaded at a predetermined position of the water ionizer.

Abstract: A filter support for supporting a filter paper within a basket includes a plurality of retaining members and a holding member. Each of the plurality of retaining members comprises a pair of opposite end portions and a base portion disposed between the pair of opposite end portions. The pair of opposite end portions extends upwardly from the base portion. Further, the plurality of retaining members are pivotally coupled to one another from the respective base portions thereof for enabling the plurality of retaining members to rotate about a pivot axis to assume one of an open configuration and a closed configuration. Furthermore, the holding member is coupled to at least one of the plurality of retaining members. The holding member facilitates removal of the retaining members from the basket, and facilitates positioning of the retaining members within the basket for retaining the filter paper within the basket.

Abstract: A liquid filter arrangement is provided, as well as methods of assembly and use. The liquid filter arrangement includes an anti-drain back valve assembly therein. Advantageous features, relating to a preferred filter cartridge and preferred anti-drain back valve arrangement, are provided.

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: A rotary disc filter device includes a rotary drum and one or more disc-shaped filter members secured about the drum. Each disc-shaped filter member includes a filter disposed on opposite sides thereof and each disc-shaped filter member includes a modular frame made up, in part at least, by a series of interconnected modules. One module of the modular filter frame includes a base that is secured to the rotary drum and a support projecting outwardly from the base. A series of these modules are interconnected to form a modular filter frame.

Abstract: A filter cartridge for use with a filter head assembly and for filtering a stream of pressurized fluid. The filter cartridge comprises a housing enclosing filtering media, a retainer to releasably engage a receiver in a filter head assembly, and one or more rotationally engagable locks securing the filter cartridge to the filter head assembly upon the rotational engagement of the filter cartridge with the filter head assembly. The housing includes an upper end having therein entry and exit passages to permit fluid to enter the housing, pass through the filtering media and exit the housing. Rotational engagement of the filter cartridge with the filter head assembly causes the retainer and said the receiver to releasably secure the filter cartridge to the filter head assembly and to thereby permit fluid to travel from the filter head assembly through the entry passage and to permit fluid to pass from the exit passage into the filter head assembly.

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 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 filtering device for filtering liquids in internal combustion engines has a filter housing and a filter element inserted into the filter housing. A cover disk closes off the filter housing. The cover disk consists of two individual disks and a central flow connection connects the two individual disks. The two individual disks and the flow connection form a common plastic component.

Abstract: There is provided an apparatus (1) for filtering fluids comprising channelling means (2), a main body (3) connected to the channelling means (2) and defining internally a housing cavity (4) provided with an access mouth (5), and at least one filter element or device (6) housed in the housing cavity (4), the apparatus (1) comprising a base (7) suitable to support the main body (3) and coupling means (8) suitable to position the main body (3) above the base (7), the coupling means (8) also including a main hinge (10) suitable to allow rotation and overturning of the main body (3) with respect to the base (7).

Abstract: A filter with installation integrity permits fluid flow only in a first installation condition and not in a second undesired or mis-installation condition, including improper alignment or mounting of a filter element in a housing, an incorrect replacement filter element, absence of a filter element, and an incorrect housing cover. A magnetically actuated valve has a piston controlling fluid flow according to installation condition.

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: This end-piece is of the type comprising two filtering membranes and support portions for supporting the membranes and channelling the fluid through the membranes. According to one aspect of the invention, it comprises a connection portion which is moulded over the support portions in order to fix them together and the support portions comprise an upper support portion, a lower support portion and an intermediate support portion which is arranged between the upper support portion and the lower support portion, a membrane is retained between the upper support portion and the intermediate support portion and a membrane is retained between the intermediate support portion and the lower support portion and the membranes are overmoulded by the connection portion.

Abstract: A primary (48, 348, 648, 908) and secondary (50, 350, 650, 910) filter are combined into a single housing (42), and two elements are combined into a single element (46). The primary and secondary filters are fluidly isolated from each other. The primary filter is configured for radial flow, and the secondary filter is configured for axial flow. The filter arrangement can be a top load arrangement or, in another embodiment, a bottom load arrangement. This combination is useable in any system that has a filter upstream of a pump (44) and a filter downstream of a pump (14). The example described is a fuel system. Methods of servicing include simultaneously removing the housing cover along with both the primary and secondary filters.

Abstract: A filter element is removably positionable within a filter housing that includes a standpipe extending therewithin and provided with a flow control valve. The filter element comprises a tubular filter media, a first end cap, a second end cap longitudinally spaced from the first end cap, and a center tube extending between the first and second end caps. The center tube has a substantially cylindrical body extending between opposite first and second ends of the center tube. The center tube has at least one inlet opening formed on the cylindrical body and a standpipe opening at the second end thereof adjacent to the second end cap through which the standpipe may be inserted longitudinally into the center tube. The center tube further has at least one actuator key provided to open the flow control valve of the standpipe.

Abstract: A sediment collection device is used on individual beverage containers for fermented beverages such as beer. A three piece arrangement is fit together before installation on the beverage container, and contains a rotating valve arrangement on complementary, funnel-like structures. This arrangement facilitates a moisture-tight connection between the bottle and the collection device. This arrangement ensures that sediment will not re-enter the beverage bottle.

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: The valve spindle for a reverse osmosis (RO) filter system is housed in a filter head and attached to a mounting ring that also carries the replaceable RO cartridge. The RO spindle is locked in the head during normal operation, but can be easily removed, after removal of the cartridge, to permit spindle replacement or repair without disassembly of the head from the mounting bracket.

Abstract: An assembly is disclosed that includes a centerpost assembly and a fluid filter cartridge. The centerpost assembly includes a main body having an inlet flow opening, an open interior, and a radial flange. An interior shelf is positioned proximate the inlet flow opening of the main body. The interior shelf includes an interior flow opening. A check valve ball is movably positioned on the interior shelf to move between the inlet flow opening and the interior flow opening. A spring-loaded end cap is movably connected to an upper end of the main body and is configured to move between a compressed state and an uncompressed state. A blocking pin extends from a lower surface of the end cap. When the end cap is in the compressed state, the blocking pin prevents the check valve ball from blocking a flow of fluid from flowing through the interior flow opening.

Abstract: A filter element is removably positionable within a filter housing that includes a standpipe extending therewithin and provided with a flow control valve. The filter element comprises a tubular filter media, a first end cap, a second end cap longitudinally spaced from the first end cap, and a center tube extending between the first and second end caps. The center tube has a substantially cylindrical body extending between opposite first and second ends of the center tube. The center tube has at least one inlet opening formed on the cylindrical body and a standpipe opening at the second end thereof adjacent to the second end cap through which the standpipe may be inserted longitudinally into the center tube. The center tube further has at least one actuator key provided to open the flow control valve of the standpipe.

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 floor waste (10) including a filter basket (16) having a magnet (18). The magnet (18) attracts a movable valve member (27) upwardly from a seat (22) to allow liquid to pass through the seat (22). When the basket (15) is removed the movable valve member (27) closes the seat (22). In one embodiment the valve member (27) includes a valve disk 29 that prevents the flow of liquid through the seat (22) when engaged therewith, while in another embodiment the disk (29) has a series of passages (31) that permits the flow of liquid through the seat when the disk (29) is engaged with the seat (22).

Abstract: An apparatus for performing blood therapy having a plurality of pumps for engaging blood and fluid tubing is characterized by a plurality of manually mounted and disengagable panels installed on the sides of the apparatus housing, the panels having pump engaging tubing mounted on the inside of the respective panels.

Abstract: A cleaner oil change procedure can be achieved by using an adaptor assembly that comprises: a housing unit that defines a cavity volume; a filter mount connected to the housing unit, and adapted to mount a spin-on oil filter; an inner piston slidably engaged with the filter mount and adapted to fit within the cavity volume, wherein the inner piston is moveable between a first position within the cavity volume and a second position substantially outside of the cavity volume; an actuator spring located between the inner piston and the housing unit, wherein the actuator spring exerts a force on the inner piston capable of moving the inner piston from the first position to the second position; a drain valve slidably connected to the inner piston; a drain channel in the housing unit; and a valve spring adapted to force the drain valve to seal against the drain channel and prevent flow of oil through the drain channel when the inner piston is in the first position, wherein the drain valve does not seal against the

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 liquid droplet ejecting apparatus comprises a liquid cartridge including a first unit having a liquid storing chamber and a liquid outlet, a second unit movable relative to the first unit between a close position where the second unit is close to the first unit and a distant position where the second unit is distant from the first unit; and a biasing member which applies a force to cause the second unit in the close position to move toward the distant position. The locking device is configured to lock the second unit in the close position in a state where the liquid cartridge is mounted to the cartridge mounting portion. When the second unit moves from the close position to the distant position under the force applied from the biasing member, in an unlocking state, the liquid inlet and the liquid outlet are maintained to be coupled to each other.

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: 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 surface formation.

Abstract: A loader for moving a filter element between loaded and unloaded positions with respect to a pressure vessel is provided. The loader includes a connection section associated with a loader section. The connection section is operative to be secured in coaxial alignment with the pressure vessel. The loader section is operative to receive a filter element and move the filter element between the loaded and unloaded positions. The loader section includes a cradle assembly for supporting a filter element and a carriage assembly operative to engage the filter element and move it between the loaded and unloaded positions.

Abstract: A filter device includes at least one filtering element arrangeable in a filter housing (11) connectable to a hydraulic device (9), in particular a hydraulic tank. The tank is connectable to the filter housing through hydraulic connections (37, 39) by a connection system in such a way that a fluid is enabled to circulate. The filter housing is removably mounted on the hydraulic device (9) by a fixing unit. The fixing unit is embodied in the form of a bayonet fitting (17, 19) which is lockable and detachable by the filter housing (11) rotation. The connection system has at least one movable locking element which locks in the locking position the hydraulic connection (37, 39) associated with it, and releases the connection after displacement in the open position. The locking element is displaceable in a sealing or opening position by rotational motions of the housing (11) for detaching and locking the bayonet fitting (17, 19).

Abstract: A filter assembly for fluid filtration having a push-activated lock and release mechanism. The filter housing has a sump for enclosing the filter media, a filter head, and at least one standoff protruding outwards for use in securing the filter head to a filter manifold. The filter manifold supports the filter housing with a filter locator. A filter guide having a rotator actuating mechanism secures and holds the filter head in place when the filter head is axially inserted. The rotator actuating mechanism has tabs and slots that rotate upon a transverse axial force from the standoff and from tabs on an internal shutoff. The internal shutoff has an inlet extension and an outlet extension with apertures for fluid ingress and egress. The internal shutoff tabs slidably contact and align the rotator actuating mechanism to secure and remove the filter head.

Abstract: A filter device has a filter housing part (10) with a filter element (12) and can be detachably connected to another filter housing part (20). A valve (24) clears a fluid path in the interconnected state of the housing parts (10, 20) with the filter element, and in the separated state of the housing parts (10, 20) from one another or without the filter element at least partially blocks it. Instead of known quarter-turn fastener and stopper solutions, a blocking is devised which can be economically implemented and which requires decidedly less installation space. A process for operation of a filter device is also provided.

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 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: 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: Coolant conditioning unit for coolant of an internal combustion engine. The unit includes a cup-shaped housing, a removable cover for closing the housing, a replaceable filter insert arranged in the housing and being detachably connected to the cover, an inlet, an anti-drain valve that is normally open during filtering, and a stop valve arranged in the inlet. The stop valve is held in an open position by the filter insert and closes when the filter insert is removed from the housing and closes before the cover has been completely separated from the housing. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: A filter with installation integrity permits fluid flow only in a first installation condition and not in a second undesired or mis-installation condition, including improper alignment or mounting of a filter element in a housing, an incorrect replacement filter element, absence of a filter element, and an incorrect housing cover. A magnetically actuated valve has a piston controlling fluid flow according to installation condition.

Abstract: An internal combustion engine, in a motor vehicle, has a fuel filter system in a fuel line leading to the internal combustion engine. The operation of this motor vehicle exclusively with fuel of filtered quality is ensured. To this end, a valve is provided inside the fuel line preventing the internal combustion engine from being started when the fuel is unfiltered.

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: A device for filtering fuel, in particular diesel, the device comprising a housing containing a flow circuit, a first particle filter element, a second particle filter element, and a water separation fabric. The fuel flow circuit extends between an inlet and an outlet. The first particle filter element is adapted to cause the water contained in the fuel to coalesce in the form of droplets. The second particle filter element is disposed downstream from the first filter element in the fuel flow circuit. The water separation fabric is interposed between the first filter element and the second filter element in the fuel flow circuit and is adapted to form a barrier against droplets of water.

Abstract: Fluid separation assembly that allows easy and fast change-out even in confined spaces, and also minimizes or eliminates leakage during change-out. A fluid separation unit having a housing containing separation means, the housing having an inlet and an outlet spaced from the inlet, each including a fitting for attachment of the housing to a manifold or other device allowing fluid communication through the separation means to a point of use is provided. The fittings are designed for quick connect/disconnect, and for minimal or no leakage. The fittings may be on opposite ends, with top and bottom fittings of different configurations, thereby ensuring proper installation of the assembly. The particular medium to be separated is not particularly limited, and can include slurries, fluids including water, and pre-loaded chromatography columns.

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 cartridge has a keyed end cap which is configured and shaped for unlocking an associated valve mechanism that comprises a latch device and a valve. In this manner, when the fuel filter cartridge is placed into a fuel filter housing having such a latch and valve mechanism, the fuel filter cartridge is operable therein to filter fluid and pass the fluid into a standpipe contained within the fuel filter housing. The fuel filter cartridge of this type generally includes pleated filter paper which is disposed between two opposed end caps. The keys may be provided along the bottom end cap.

Abstract: A multifunctional shutting device for a lubrication filter includes a safety device with triple valve shutting. The safety device includes a first valve for closing the oil intake in the filter with a view to dismantle the filter, a second bypass valve that opens when the filter is blocked and a third valve that opens in the event of excess pressure in the hydraulic circuit. The multiple valve structure is particularly applicable to the lubrication system in an aircraft engine but can be used in other hydraulic circuits subject to similar issues.

Abstract: A filter assembly includes a head housing having a water inlet and a water outlet, and a valve disposed in the housing and defining inlet and outlet passageways, and having a first key formation. A cartridge is provided having separate inlet and outlet ports each engageable in a corresponding one of the passageways, and a complementary key formation for engaging the first key formation for ensuring proper engagement of the ports in the passageways. The valve is rotatable in the housing between an open position in which feed water passes through the inlet passageway and into the cartridge, and treated water flows to the outlet passageway, and a closed position in which water is prevented from flowing to and from the valve. The inlet and outlet passageways and the first key formation are generally linearly aligned.

Abstract: A modular filtration assembly for filtration of fluids, the capacity of the assembly depending upon the selected number of filtration modules included in the assembly. Each of the modules is made up of two identical housing members connected together in inverse, head-to-tail configuration and providing for inflow and outflow of fluid to and from a filter unit disposed in a recess formed by the two housing members. A housing inlet and housing outlet serve the function of assembly inlet and assembly outlet when the modules are assembled to one another to form the filtration assembly, providing for modularity and affording flexibility of capacity of the assembly.

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 water dispenser in a refrigerator door can include a filter casing in the door opening into the bottom of the dispenser housing. The filter casing can include a top wall positioned in the bottom of the dispenser housing, a head assembly at the bottom of the filter casing connected to the water supply and to a water outlet in the dispenser, and can include a filter casing drain. A filter cartridge in the filter casing can connect to the head assembly. The filter casing can include a filter retainer mounted adjacent the opening into the filter casing and can hold the filter cartridge connected to the head assembly in a first position and can release the filter cartridge in a second position. The filter casing can include a drain line leading from the filter casing drain to a pan outside the refrigerated space.