Abstract: A multifunctional system for particle separation and/or treatment for the usage in biological and medical research, to detect and to treat diseases with a modular system consisting out of the filter/strainer device and the auxiliary devices lower connector with tube adaptor and upper screw cap connector. All parts of the modular system can be airtight connected and by means of a valve used with higher pressure, lower pressure or without pressure equalization.

Abstract: A multiple container device having a bottom container with a first base, a top member with first openings, and a first wall extending between the first base and the top member, a top container having a second base comprising second openings and a second wall extending from the second base, and an intermediate wall extending either upwardly from the upper rim of the first wall or downwardly from the lower rim of the second wall. The intermediate wall is configured for slidably receiving the container that is not attached thereto therethrough. The device also including guides and tracks disposed on the interior surface of the intermediate wall and the exterior surface of the wall of the container received within the intermediate wall such that motion of the top container with respect to the bottom container is restricted to between an open position and a closed position.

Abstract: An apparatus for filtering dry film solvent includes a hollow vessel having a side wall, an open top end and a second end that includes a main outlet that allows fluid to flow out of a hollow interior of the vessel. A removable cover closes off the open top end of the vessel. The apparatus also includes at least one fluid inlet port formed along the side wall of the vessel and defining an entrance into the hollow interior of the vessel and at least one fluid outlet port formed along the side wall of the vessel and defining an exit from the hollow interior of the vessel. A removable filter member is disposed within the hollow interior and is defined by a frame and filter media that extends across the frame such fluid flowing into the hollow interior through the main inlet must flow through the filter media to reach the main outlet. The filter media is disposed at an angle other than 90 degrees relative to the frame of the filter member.

Abstract: A removable manifold for a medical/surgical waste collection system. The manifold is dimensioned to be mounted to a receiver integral with the system. The manifold includes a includes at least one fitting through which waste is drawn into the manifold. The fitting opens through an inlet port into a void space internal to the manifold. A backflow prevention valve is disposed in the manifold void space. The backflow prevention valve includes a static hub to which a driver for engaging a complementary valve internal to the receiver. The valve regulates flow between the receiver and the down line components of the waste collection system. The valve is normally closed. When the manifold is fitted to the receiver the driver engages the valve so as move the valve to the open position. This allows fluid flow from the manifold and receiver to the downstream components of the system.

Abstract: An apparatus and method to perform multiple filtration steps with a modular filtration apparatus and single cycle. A stackable modular filter cup has features to allow stacked cups to be separated without the need for substantial effort yet without diminishing the effect of vacuum assisted filtration. Each cup is formed with a slip seal segment and/or a series of substantially vertical channels or ridges on an inner or outer wall to reduce surface contact between nested filter cups.

Abstract: A fluid pressure vessel has a chamber with an inlet and outlet with a nested primary and secondary filter bag disposed such that the primary bag communicates exclusively with the inlet, and flow through the primary bag flows through the secondary bag before the outlet. The primary bag is disposed in a first rigid porous basket and the bag rim seals against a flange on the first basket. The secondary filter bag surrounds the first basket and the rim of the secondary bag is sealed around the flange of first basket. A second rigid porous basket surrounds the secondary filter bag and is sealed on the rim of the secondary filter bag and is sealed against the inner periphery of the pressure chamber by an O-ring.

Abstract: A liquid filter assembly comprising a filter subassembly is inserted within an elongated tubular filter body, enclosed by a pair of end caps. The filter subassembly includes a plurality of filtration discs placed onto a tubular core and inner support member. A disc aperture is provided concentrically through each filtration disc. An outer filter support member and a central filter support member support each filtration disc. The outer filter support member engages with an interior of the elongated body and an end wall engages with the disc perimeter. The central filter support member engages with an exterior of the inner support member and an end wall engages with the peripheral edge about the filtration disc aperture. Fluid passes through the first end cap orifice, continuing through the inner support member, transferring flow through the filtration discs, returning through the inner support member, and exiting the opposite end cap orifice.

Abstract: A removable manifold for a medical/surgical waste collection system. The manifold is dimensioned to be mounted to a receiver integral with the system. The manifold includes a includes at least one fitting through which waste is drawn into the manifold. The fitting opens through an inlet port into a void space internal to the manifold. A backflow prevention valve is disposed in the manifold void space. The backflow prevention valve includes a static hub to which a driver for engaging a complementary valve internal to the receiver. The valve regulates flow between the receiver and the down line components of the waste collection system. The valve is normally closed. When the manifold is fitted to the receiver the driver engages the valve so as move the valve to the open position. This allows fluid flow from the manifold and receiver to the downstream components of the system.

Abstract: A fluid purifying module including a monolithic container, a pretreatment filter, and a selectively permeable membrane treatment cartridge, respectively housed in an external cylindrical space and an internal cylindrical space of the container, communicating with each other via one or more passages in the vicinity of one axial end of the container. The external space communicates at the same end as the opposite axial end with a first connector orifice for feeding fluid to be purified to the pretreatment filter, and the internal space communicates separately, at the same end as the aforementioned axial end, with a second connector orifice for evacuating from the module a flow of permeate (purified fluid) and with a third connector orifice for evacuating from the module a flow of retentate (residual fluid).

Abstract: A return flow filtration assembly for filtering return hydraulic fluid is provided. The filtration assembly includes a first return fluid chamber including a first inlet and first and second of outlets. The second outlet is configured to be coupled to a secondary return flow filter for providing micro-filtering of the return fluid. The first outlet includes a restriction element for restricting flow through the first outlet and generating an artificial back pressure within the first return fluid chamber to drive fluid through the second outlet, when the second outlet is coupled to a secondary return flow filter.

Abstract: A removable manifold for a medical/surgical waste collection system. The manifold is dimensioned to be mounted to a receiver integral with the system. The manifold includes a driver for engaging a complementary valve internal to the receiver. The valve regulates flow between the receiver and the down line components of the waste collection system. The valve is normally closed. When the manifold is fitted to the receiver the driver engages the valve so as move the valve to the open position. This allows fluid flow from the manifold and receiver to the downstream components of the system.

Abstract: A filter element is disclosed. The filter element includes a filter casing defining an inner radial surface, a filter body disposed within the casing, the filter body having an axial, dirty side surface and an axial, clean side surface, wherein the filter body includes fluted filter media having one or more flutes that extend from the dirty side surface to the clean side surface and a pre-filter including an axial, dirty side surface and an axial, clean side surface, the pre-filter arranged within the casing so that the dirty side surface of the pre-filter is proximate the clean side surface of the filter body, wherein the filter body and the pre-filter are fixably retained by the inner radial surface of the casing.

Abstract: A filter apparatus includes a first sample material section. A second filter section, with a second filter, is connected with the first sample material section and a third filter section, with a third filter, is connected with the second filter section. A retaining vessel is provided within which the first sample material section, the second filter section and the third filter section fit and a lid is included that is conformed to connect with the retaining vessel such that the lid seals the retaining vessel when connected.

Abstract: A food scrap strainer includes a housing, a first straining basket disposed within a lower portion of the housing, and a second straining basket disposed within the housing above the first straining basket. The housing includes a first retaining portion and a second retaining portion. The first basket includes a first flange and the second basket includes a second flange having an outer diameter smaller than an inner diameter of the first retaining portion and larger than an inner diameter of the second retaining portion. In an example embodiment, a sink bowl is attached to the housing, and a lip is attached to an upper portion of the sink bowl. A plurality of threaded extensions project downwardly from a lower side of the lip.

Abstract: A filter element is disclosed. The filter element includes a filter casing defining an inner radial surface, a filter body disposed within the casing, the filter body having an axial, dirty side surface and an axial, clean side surface, wherein the filter body includes fluted filter media having one or more flutes that extend from the dirty side surface to the clean side surface and a pre-filter including an axial, dirty side surface and an axial, clean side surface, the pre-filter arranged within the casing so that the dirty side surface of the pre-filter is proximate the clean side surface of the filter body, wherein the filter body and the pre-filter are fixably retained by the inner radial surface of the casing.

Abstract: A first filter basket (20) sits down into a catch basin (10) and has an upper flange (24) that rests on a shoulder (14) provided in the catch basin (10) for supporting a grate (16). The filter basket (20) has expanded metal side and bottom walls which are adapted to pass liquid and catch particulate material larger in size than the wall openings. A geo-textile liner (42) is optionally positioned inside of the filter basket (20). The liner (42) is supported on a lower rim flange (26). Posts (40) on the rim flange (26) extend upwardly through openings (66) in marginal portions of the liner (42). A smaller second filter basket (72) is optionally supported inside the larger first filter basket (20). An absorbent pillow (90) may be positioned between the bottoms of the two filter baskets (20, 72) to catch and absorb oils and greases that are in the liquid that enters the catch basin (10).

Abstract: A filter cartridge in a filter-in-filter design with an inner filter and an outer filter. A mechanism, for example crush ribs, connects an upper end plate of the outer filter and an upper end plate of the inner filter to prevent relative axial and radial movement therebetween when assembled. Relative axial or radial motion can create a rattling noise which is sometimes perceived as a low quality filter. The crush ribs are, for example, formed on an interior surface of the upper end plate of the outer filter, and the ribs engage an outer perimeter of the upper end plate of the inner filter. One or more of the ribs crush when the inner filter is installed into the outer filter to ensure tight axial and radial engagement between the filters.

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 manifold and filter assembly for use with a waste collection unit is provided. The manifold and filter assembly directs and filters medical waste flowing into the waste collection unit. The manifold and filter assembly comprises a manifold body defining a chamber and an outlet for directing the medical waste into the waste collection unit. A manifold cap is fitted to the manifold body to close the chamber. The manifold cap defines a plurality of inlets for receiving the medical waste. A filter basket having a bottom and a peripheral wall defining a plurality of openings is snap-locked to the manifold body. The filter basket is positioned such that a fluid bypass is formed between the filter basket and the manifold body and between the filter basket and the manifold cap. The fluid bypass is in fluid communication with the outlet whereby the medical waste can flow over the peripheral wall to the outlet through the fluid bypass.

Abstract: In one aspect of the present invention, a fluid filter comprises a primary filter configured to filter water passing therethrough, the primary filter having first and second ends. A mount holds the planar filter in a chamber adjacent to an opening in the chamber, such that fluid passing through the opening substantially passes through the primary filter. The mount also holds the primary filter at an angle with respect to the opening such that the first end is closer to the planar surface than the second end and such that the second end, but not the first end, is in contact with a wall of the chamber. A downstream filter may also be used to provide a cascading effect permitting water to flow over the edge of the primary filter onto the downstream filter.

Abstract: A filter pit is disclosed. The pit has an inlet and an outlet adjacent a base of the pit. A primary, a secondary and a tertiary filter are located between the inlet and outlet and the tertiary filter is supported above the base and is able to dry out when the flow of water through the pit ceases.

Abstract: A filter retaining system formed from multiple filter retaining frames is disclosed. Each of the frames is formed from either a female type extrusion or a combination of male and female type extrusions. Specifically, each frame has either a tongue or a groove which is engageable into a corresponding groove or tongue of an adjacent frame. The tongue and groove engagement provides added rigidity to the retaining system, as well as preventing air from bypassing the filters retained within each frame.

Abstract: A pipe mounting apparatus for a water filter includes a first half body with a top, a first pipe assembly, a second half body with a top, a second pipe assembly and a mounting bracket. The first pipe assembly is formed on the top of the first half body and has a pump inlet and a pump outlet. The second half body is attached to the first half body. Likewise, the second pipe assembly is formed on the top of the second half body and communicates with the first pipe assembly to form a water filtering loop. The mounting bracket is mounted over the two half bodies to support a booster pump. Consequently, the booster pump will be quickly and easily connected to the pump inlet and the pump outlet with fittings or pipes to pump the water into the water filter.

Abstract: A combination filter assembly having a plurality of filter sieves positioned in parallel one after the other in the direction of flow. The filter sieves are stretched and mounted in housing elements to form filter elements. The housing elements are in contact with each other by means of top and bottom bearing faces, and are maintained in a stack. The filter elements have a cylindrical shape with annular bearing faces, wherein one bearing face includes a centering male coupling and sealing formation, and the other bearing face includes a corresponding centering female coupling and sealing formation.

Abstract: A sealed filtration system includes a housing, having two chambers, that can be submerged. One chamber houses a plurality of subchambers in which various filter media are located, and the other chamber houses a submersible pump or additional filer media. A drain chamber and port is also defined within the housing for each chamber. An external pump can be to the housing.

Abstract: A bacterial fluid filter includes a filter element supported by a backing member. The filter element and backing member are sealed, e.g., with one or more o-ring seals, in a housing to provide a filter assembly capable of filtering fluid under relatively high pressure. In one embodiment, a filter element, backing member, and seal are disposed in a removable and disposable housing that is sized to fit within a filter housing.

Abstract: A bacterial fluid filter includes a filter element supported by a backing member. The filter element and backing member are sealed, e.g., with one or more o-ring seals, in a housing to provide a filter assembly capable of filtering fluid under relatively high pressure. In one embodiment, a filter element, backing member, and seal are disposed in a removable and disposable housing that is sized to fit within a filter housing.

Abstract: A filter system especially useful in the treatment of waste material, in particular liquid waste material which may include particulate matter therein. The filter system includes a series of filters of progressively finer porosity in order to selectively eliminate particulate (or semi-particulate) matters from a carrier material, typically but not exclusively, of a fluid or liquid nature. The filters are mounted within a housing which includes an outlet port and a plurality of inlet ports, wherein each inlet port includes a check valve.

Abstract: A water filter system having a housing for a plurality of serial-flow connected filter cartridges with distinct filtering characteristic related to the direction of flow of water being filtered. Each filter cartridge has a membrane wrapped activated carbon filter body. One of the filter bodies includes a heavy metal bacteriostat. The cartridges are each releasably retained in a manifold by keyed connectors including rotatable locking rings. Each cartridge having a distinct filtering characteristic includes a keying structure to ensure that the cartridge can only be connected to the manifold for placement in proper serial-flow relationship in the system. The filter system includes a spent filter cartridge indicator. The filter system is particularly suited for countertop placement and connection to a faucet.

Abstract: A water filter includes a housing, a base adapted to engage with a lower end of the housing, two filtering cores each having a cylindrical casing threadedly connected with an upper circular cover and a lower circular cover, the lower circular cover having a threaded circular shoulder depending downwardly therefrom and a tubular neck having an upper end extending upwardly from the threaded circular shoulder and a lower end extending downwardly from the threaded circular shoulder, a first seat formed with an inner neck and an outer neck and arranged in a respective recess of the base, and a second seat formed with an second inner neck and an second outer neck and fitted into a respective recess of the base, whereby the water filter will provide two circulation cycles for purifying water.

Abstract: An apparatus for filtering plastic melts, which comprises a filter housing (1) having at least one cylindrical filter receiving chamber (8), and with a tubular filter cartridge (2) mounted in the chamber. An annular melt flow space (9) for the plastic melt is defined between the outer periphery of the filter and the inside wall of the chamber, such that the melt flows radially inwardly through the filter medium of the filter cartridge and into the central passage of the filter cartridge and then to an outlet opening of the housing. An additional melt flow outlet channel (12) is positioned adjacent the downstream end of the filter cartridge, and in one embodiment, the melt is able to flow via the additional melt flow outflow channel to the outside of the housing. In a second embodiment, the melt can flow via the additional melt flow outflow channel and an additional filter (11) and return to the main flow.

Abstract: A micro-screen filter device for a dry cleaning fluid flow system in a dry cleaning machine, having a cage to receive garments to be cleaned, a main filter with a plurality of filter elements and optional carbon cores, a main filter outlet valve, a main filter bypass valve, a solvent pump, a solvent holding tank, a tank inlet valve, a tank outlet valve, a button trap housing, a button trap inlet pipe, a button trap outlet pipe and a button trap outlet valve. The micro-screen filter device comprises a filter support assembly to be inserted into the button trap housing. A micro-screen filter bag is convoluted over the filter frame body, to remove fine particulates from dry cleaning fluid solvent in the system.

Abstract: A filter-collector apparatus comprising a closed vessel having in inlet for introducing pneumatically conveyed material thereinto and an outlet for discharging material therefrom, a detachable tube sheet disposed in the vessel and cooperating with the vessel to provide a material collector chamber and a plenum chamber, wedging means for detachably securing the tube sheet to the vessel, at least one filter tube extending through an opening in the tube sheet and into the collector chamber, having the interior thereof communicating with the plenum chamber, wedging means for detachably securing the filter tube to the tube sheet, means disposed in the plenum chamber for selectively injecting a stream of fluid under pressure into the filter tube for dislodging filtered material deposited on the filter tube, means for detachably securing the fluid injecting means to the tube sheet and the vessel having outlet means communicating with the plenum chamber.

Abstract: A refuse collecting frame for a drainage sewer, particularly a frame placed beneath a cover of a sewer drainage opening to accumulate refuse and permit easy disposal of refuse accumulated therein in order to prevent blockage of the sewer. The refuse collecting frame includes a frame body and a refuse collecting basin. The frame body is preferably a rectangular or cubic frame structure having a dimension corresponding to the opening of the sewer drain. A filtering net or a porous board with a plurality of penetrating holes is incorporated at each lateral side and bottom of the frame. A plurality of right-angled hangers are formed at spaced positions along the upper edges of an open upper side of the frame for firmly hanging the frame on a sewer opening by positioning the right-angled hangers on a stepped portion formed along edges of the sewer opening beneath a separate cover.

Abstract: A recovery system for precious metal particles in wash solutions includes a pair of filter elements and a pump mounted within a closed tank. The first filter is of relatively large pore size, and traps layer particles. The prefiltered liquid is collected within the tank. A pump is mounted within the tank, and drives the collected liquid and remaining particles through the second filter, which is of a small pore size chosen to trap the remaining particles. After passage through the second filter the wash water may be discarded.

Abstract: The brine purifying system employs a multistage filtering apparatus comprising a plurality of the same filter units piled up one over another to form a plurality of cascaded filtering stages. When the filter layers of the filter units are clogged with unsoluble matters, the operation of the multistage filtering apparatus is interrupted, then a solvent for the unsoluble matters is circulated through the multistage filtering apparatus to remove the unsoluble matters arrested by the filter layers by dissolving the same therein. Then, a washing liquid is circulated through the multistage filtering apparatus to wash the multistage filtering apparatus completely. The solvent and the washing liquid used for regenerating and washing the multistage filtering apparatus are recovered and are used for dissolving salt to prepare saturated brine. The unsoluble matters thus removed from the filter layers are removed by being precipitated in a precipitating tank.

Abstract: A filter assembly for filtering a wide size range of impurities from a fluid. The filter assembly comprises a basket having a porous surface of a first average pore size defining an interior space for collecting impurities filtered from a fluid and a filter liner of a second average pore size less than the first average pore size disposed inside the basket for filtering impurities from the fluid. A nozzle is disposed at approximately a 20.degree. angle from the vertical axis for providing an unfiltered fluid to the filter assembly and for increasing the swirling intensity of the fluid therein. The present invention also contemplates a filtration unit including at least one filter assembly described above and a pump for suctioning an unfiltered fluid through the filter assembly so that the pump will draw a filtered fluid.

Abstract: An apparatus for dispensing a predetermined amount of a sample into a fluid. The apparatus comprises a chamber which may be inserted into a cuvette. The chamber comprises a membrane or filter ball for dispensing a predetermined amount of a sample into a fluid upon contact of the membrane or filter ball and the sample by the fluid. The fluid is brought into contact with the sample by vortexing the fluid with a vortex mixer.

Abstract: A fluid filtering device includes a housing having an interior chamber with an open top and an inlet and outlet open to the chamber. An annular seat is secured to the housing within the chamber in a position spaced downwardly from the open top so that the seat protrudes inwardly into the chamber. A filter element is removably insertable into the chamber through its open top and to a filtering postion in which the filter element is positioned between the housing inlet and outlet. The filter element includes an outwardly flanged portion which abuts against the seat when the filter element is in its filtering position. A cover is detachably secured over the open top of a housing and a spring member is secured at one end to the filter element to extend upwardly to abut against the cover and secure the filter element in position against any loss of seal with respect to the housing during operation of the filtering device.

Abstract: A plate-type filter cartridge includes a plurality of stacked filtration units; each filtration unit having inner and outer rims, two filtration membranes bonded to opposite sides of the two rims, and a pair of netty members formed of fibrous material contacting a porous support and membranes. The support supports the membrane and is disposed between the membranes; the support being defined by a plurality of spokes and an outer rim.

Abstract: An orifice assembly for use in connection with diffusion cells for the percutaneous absorption of fluids which is composed of a pair of resiliant and mating members having structure for securely retaining a flexible membrane therebetween in a predetermined and fluid tight relationship with each other and the diffusion cells.

Abstract: A liquid filter device has a housing and a multiple of closely spaced discs provided in the housing, the discs having holes which are adapted to be in alignment so as to define at least one elongated passage. The discs have separating means separating the discs from each other so as to provide a flow gap between adjacent discs. A filter tube is provided in each elongated passage. A fluid inlet leads into the housing to provide fluid into the interior of at least one filter tube, and a fluid outlet leads from the housing to withdraw fluid, which has passed through the filter tubes and into the flow gap between the discs. Interconnection means interconnect the ends of the filter tubes, and a resin casting surrounds the interconnection means.

Abstract: A multi stage oil filter assembly is disclosed characterized by a housing including base and cover members and at least one intermediate member arranged between the base and cover members. A first planar filter member is arranged between the cover and intermediate members and a second planar filter member is arranged between the intermediate and base members. The planar faces of the base and cover members adjacent the intermediate member each contain a plurality of concentrically spaced circular grooves and a radial conduit affording communication between the grooves, whereby fluid is distributed across the planar faces of the base and cover members adjacent the planar filter members. The intermediate member contains a plurality of segmented circular concentrically spaced slots corresponding with the grooves of the base and cover member planar faces.

Abstract: A filtration system is provided for a dry well in the form of a buffer tank made of concrete to remove sediment and pollutants from water supplied from a header to an inlet pipe in the tank, so that the water exiting from an outlet pipe is free of particulate matter and pollutants. This is accomplished by providing a sediment pit and a baffle at the inlet side of the tank and then passing the water through a multiple stage set of filters having different aperture sizes. These filters remove particles and pollutants from the water as it passes through the buffer tank on its way to a dry well drain pipe attached to the outlet of the buffer tank.

Abstract: A filter and water separator for use with liquid hydrocarbons such as aircraft fuel includes a horizontally directed housing and within the housing a first set of filtering and coalescing elements connected to the inlet port of the housing and a parallel arranged set of separating elements arranged parallel to the filtering elements and communicating with the outlet ports in the housing. Each separating element is provided in its interior with a coaxially arranged hollow cylinder communicating at one end with the outlet port and having an inlet opening at its opposite end. The cylindrical wall of the hollow cylinder is formed with a plurality of inlet openings, the combined cross-section of which increases from the end face inlet opening toward the outlet port.

Abstract: Apparatus and method for filtering contaminated fluids at various locations using at least a first and second filter unit mounted on a mobile base. Each filter unit has a plurality of filter vessels with each of the filter vessels having a plurality of filter elements and dual plate mounting. In each filter unit, the contaminated fluid is first coarse filtered and then fine filtered. Means are provided to by-pass either the first or second filter unit so that the filter elements can be changed or for by-passing both the first and second unit when desired.

Abstract: A filter apparatus has a filter housing having suspended therein a filter element. The filter element includes a plurality of hollow threads made from a high molecular weight polymeric material. The threads are characterized by being porous and flexible as well as being closed at the bottom. The filter apparatus further has at least one baffle within the housing to cause turbulence in the liquid to filtered. The inside of each hollow thread is at a lower pressure than the liquid on the outside, so that the filtrate can enter through the porous membrane of the threads while leaving solid matter behind. The open tops of the threads are in communication with an opening in the filter housing through which filtrate, free of solid material, may be removed.

Abstract: A leaf-type filter system in which a suction pump is employed to pump filtered fluid from a series of individual filter leaves is connected to the individual leaf chambers via fluid couplings located above the surface of fluid being filtered. The couplings are of inverted U-shape and have a sliding sealing fit with the vertical outlet tube of a leaf and a vertical receiving tube mounted in a manifold or header external of the main filter tank.

Abstract: A low-cost, mass-produced oil purifier of plastic, utilizing reverse internal currents to remove impurities, has a sealed housing with upper and lower parts that interfit. The lower housing part has a circular base and a central, upright standpipe open at top and bottom, that is provided with exterior ledges at different levels on which perforated discs are supported. The upper housing part comprises an inverted shell fitted to the base of the lower part, and having an inverted cup depending from its top wall and surrounding the top of the standpipe. At one side of the inverted cup is an oil inlet on the upper housing part. The top perforated disk imparts a swirl to the incoming oil, which passes downward through the disks to a settling chamber at the bottom, and then in a purified state upward through the disks again to the open top of the standpipe, thence down through the standpipe and out at the bottom of the latter.

Abstract: An ultrafiltration and reverse osmosis module comprising a tubular casing having a plurality of tubular membrane assemblies spaced therein by spacing plates, in stepped end portions of the casing bore, and held therein by sealing plates clamped to flanges on the ends of the casing. The tubular membrane assemblies are sealed around bores in the spacing plates and boxes in the sealing plates by "O"-rings and are held against collapse by sleeves in the ends of the tubular membrane assemblies.