Abstract: A filtration assembly is provided that comprises a filter cartridge and a filter head, that has particular application for liquid filtration, such as engine fuel filtration in an embodiment. The filter cartridge can include a thread and a torsion lock detent to provide twist and lock mounting to the filter head. Separately, the filter cartridge can include a slidable piston that can become pressurized by application of liquid pressure during operation that can apply an axial force to the filter head to load the thread and increase threaded attachment rigidity and/or the natural frequency of the filter cartridge to a more desirable level, and thereby limit vibrational impacts.

Abstract: A valve member having a first flow path and a second flow path, and configured to control both flow paths through a filter assembly. The valve member allows control of the two flow streams in a compact space compared to traditional valves. The valve member may require less space to operate due to its compact nature as compared to traditional external valves with multiple handles that each require space to rotate. The valve member may also be used to easily shut-off flow to a filter of a filter assembly without limiting use of another filtration assembly in the same filtration system. Alternatively, the valve member may shut off flow to a corresponding filter of a stand-alone filter assembly that is not connected to another filter assembly. Also, the valve member allows less expensive and more lightweight filtration systems.

Abstract: A water purifying filter has a cylindrical inner housing to receive a filter therein, and an outer housing to receive the inner housing. The inner housing and the outer housing are spaced apart from each other to form an insulation space configured to suppress heat transfer and to reduce the filter freezing inside the inner housing.

Abstract: A debris trap useful is a swimming pool cleaning system includes a container having an open end and an opposing closed end, wherein the closed end wall includes an outlet port. A cover includes an arcuate shaped outside surface and an open end. The open end is defined by a cover rim dimensioned from mating with the open end of the container. The cover includes an inlet port extending therethrough. A coupling is pivotally connected to the container and has an arm extending over the cover outside surface and contoured therewith. The arm is rotatable from a locked position for biasing the cover to the container to an unlocked position permitting removal of the cover from the container to facilitate easily removal of a filter basket carried within the container.

Abstract: A modular filter assembly for use in a fluid filtering system comprising a housing for a filter media. The housing has an open end and a closed end. The modular filter assembly further comprises a collar for attachment to the open end of the housing. The collar defines a collar orifice. A removable locking element is configured to be received at the collar orifice. The modular filter assembly also comprises cooperating structure between the collar and the removable locking element for releasably attaching the removable locking element to the collar for selective access to the filter media within the housing. The housing can be one of a plurality of select lengths to receive a filter media that is a corresponding one of several lengths.

Abstract: A test tube insert includes a flange having a width greater than a width of a mouth of a larger test tube into which the insert is to be inserted. The flange defines a first central opening. An annulus extends integrally downward from the flange. The annulus includes a fenestrated wall and a floor defining a second central opening. A small test tube body, smaller than the larger test tube, extends integrally downward from the floor of the annulus with the second central opening forming a mouth of the small test tube body. The test tube insert is disposed in the mouth of the larger test tube. Fluid is transferred through the central opening and the fluid fills the small test tube body of the test tube insert and flows through the fenestrated wall once the small test tube body is full into the larger test tube.

Abstract: A filter device has a filter housing (1), at least one filter element (13) received in the filter housing (1) and an inner fluid space (71) limited by a filter medium (17) through which the fluid to be cleaned can flow. The filter medium separates the inner fluid space (71) from an exterior fluid space (11) located in the filter housing (1). The filter housing (1) has a fluid inlet (7) and a fluid outlet for cleaned fluid. A fluid guide device (9) is connected downstream to the fluid inlet (7) and can be optionally retrofitted to form a flow path between the fluid inlet (7) and the exterior fluid space (11) or between the fluid inlet (7) and the inner fluid space (71) disposed in the filter element (13).

Abstract: The present invention is directed to novel systems for conducting the filtration of blood using manifolds. The manifolds integrate various sensors and have fluid pathways formed therein to direct fluids from various sources through the requisite blood filtration or ultrafiltration system steps.

Abstract: Various embodiments of an end-of faucet filter assembly connectable with a faucet on a standard sink and having a plurality of outlets corresponding with selectable modes of operation are disclosed herein. One mode of operation provides unfiltered, aerated water dispenses from the filter assembly. A second mode of operation provides a pulsing jet spray, while a third mode of operation provides filtered water. One embodiment of the present invention also includes a connection assembly between the end-of-faucet filter and the faucet that utilizes a water-tight radial seal that allows the end-of-faucet filter to swing or rotate back and forth relative to the faucet without impairing the integrity of the seal. Other embodiments of the present invention also include a filter cartridge assembly configured to provide a user with an easy method of removing and installing the cartridge.

Abstract: In the method, an adapter is substituted for the filter-enclosing cap of a conventional in-line strainer device to permit introduction into a plumbing system of a flushing solution withdrawn from an independent supply. The method is typically used for introducing antifreeze into the system for winterization purposes.

Abstract: An inline backwash, flushing filter assembly comprising a header assembly, a rotatable valve assembly, and a filter element assembly disposed within a filter housing assembly. In operation, the controller moves the turn knob of the rotatable valve assembly a one-quarter turn which results in the reversal of fluid flow through the assembly to periodically back flush the filter utilizing fluid from the system inlet. Debris removed from the filter element during the backwash process are immediately discharged from the system through a drain port. Simultaneously, the hydraulic shearing mechanism of the backwash process dislodges and drains debris which may have accumulated on the screen and at the bottom of the lower filter assembly during normal filter operations. The controller then returns the filter assembly to filtration operation by a reverse one-quarter turn of the turn knob of the rotatable valve assembly.

Abstract: A filtering device, especially a suction return filter includes a filter housing having two useful connections and a tank connection, and accommodates at least one filter element. The filter housing also provided with three return valves, two of which are held in the closing position by spring loads. All of the return valves are combined as a module at one end of the filter housing. The remaining return valve is configured as an integral constituent part of one of the spring-loaded return valves, has an opposite opening direction relative to it, and is not spring loaded. This arrangement enables the return valve unit to have a compact arrangement which can be structurally easily connected to the filter housing at a central point.

Abstract: A filter for filtering of a fluid, including a housing having an inlet port for the fluid to be filtered, an outlet port for filtered fluid and an outlet port for filtered fluid and an outlet port for rehect, In a body arranged in the housing to be rotatable between at least two positions of rotation, there are at least two positions of rotation, there are at least two interconnecting flow channels of which at least a first is provided with a filtering means through which filtering takes place in a first rotational position, wherein one end of the first flow channels communicates with the inlet port, and through which backwash takes place in the second rotational position, wherein said end of the first flow channel communicates with the outlet port for reject. The first flow channel is provided with a filtering means at each end. A second of the at least two flow channels connects to the first flow channel between the filtering means and is in constant connection with the outlet port for filtered fluid.

Abstract: A backwash filter system includes a filter array comprising a plurality of filter units each having a housing, a filter element unit and a process liquid inlet port and a filtered liquid outlet port connected respectively with process liquid inlet and filtered liquid outlet sides of the filter element unit for filtering process liquid. A process liquid inlet header connects to the process liquid inlet ports of the filter units. A filtered liquid outlet header connects to the filtered liquid outlet ports of the filter units. A first valve unit on the process liquid inlet header is switchable for connecting same alternatively to a process liquid source and a backwash liquid drain. The filtered liquid outlet header can communicate with a filtered liquid receiver.

Abstract: A water treatment or filtration unit is in two parts, a base and a cartridge. The base includes three ports, one of which may be selectively plugged or otherwise disabled. The cartridge contains the water treating material and is screwed into a socket in the base. Openings in the cartridge are then aligned with openings in the base to allow water to pass therethrough. Cartridges may be readily exchanged by simply unscrewing from, and screwing into, the base.

Abstract: Apparatus for quickly taking and filtering liquid taken from a body of liquid comprises a bailer for taking and containing a sample of the liquid therein. The bailer has an upper end portion adapted for quickly disconnecting and connecting a liquid pressurizing device including a hand operated fluid pump or regulated tank of compressed gas. A lower end portion of the bailer is provided with a ball or poppet check valve controlling the flow of liquid to and from the bailer by way of an internal opening adapted for quickly connecting and disconnecting a filtering unit to and from the bailer. The filtering unit has a disposable filter element inside of a housing attached to an upper adapter with a liquid passage therein quickly inserted into sealing engagement with the internal opening of the bailer and which opens the ball check valve. A lower end of the filter housing is connected by another adapter into which a flow control valve is quickly connected to and disconnectable from.

Abstract: The invention provides a faucet-mounted water filter comprising an upright tubular diverter body that is adapted to be secured to the open end of the water faucet. At the bottom of the diverter body is a water outlet through which unfiltered water can be dispensed. In the diverter body is a valve with a valve outlet duct projecting from one side of the diverter body. A manually movable valve handle projects from the diverter body and is connected to the valve for directing the flow of water either through the water outlet (when unfiltered water is required) or for diverting water through the outlet duct. A filter housing is mounted upon the duct and is preferably connected to the diverter by means of the duct. A carbon block filter element is provided in the filter housing which includes a vertical water inlet surface on an outside wall and a water outlet at the bottom. The filter housing includes an annular water distribution chamber for unfiltered water which surrounds the filter element.

Abstract: The invention concerns a filtration apparatus comprising a vessel divided into two chambers by a filter. An inlet orifice is provided in the vessel for liquid to be filtered, as well as an outlet orifice for the filtered liquid. A distributor device movable from the exterior of the vessel between a filtration position and a rinsing position is arranged in the vessel. In the filtration position of the distributor liquid is filtered into the first chamber, which the liquid leaves by passing through the filter, to penetrate into the second chamber, which it leaves, in the filtered condition, through the outlet orifice. In the rinsing position the liquid flows directly into the second chamber and passes through the filter in the reverse direction to penetrate into the first chamber which it leaves charged with impurities to be eliminated by an escape orifice arranged in the vessel.

Abstract: A device (10) for filtering and directing effluent to one of a plurality of angularly spaced drainfield trenches. The device (10) includes a housing (12) in which a core (14) is received. A filter medium (18) is inserted within the core (14) and extends around an inside of the core (14). Effluent channelled into the core (14) passes outwardly therefrom through a port (52) formed therein. This port is in registration with one of a plurality of ports (54) formed in the housing (12). Selective registration is accomplished by rotating the core (14) relative to the housing (12).

Abstract: The present invention represents an automatic produce hydration system of improved efficiency and design. The system is self-contained, and adaptable for use in both pre-existing and new produce display racks. The system first includes a filter unit designed to remove foreign particulate materials from incoming water. In fluid communication with the filter unit is an automatic filter cleaning system for ejecting collected foreign particulate materials from the system at selected time intervals. After filtration, the water is introduced into a pressurization system. Once the pressure has been increased, pressurized water is delivered through an external water delivery line having a plurality of spray heads associated therewith. The spray heads have restriction means therein to ensure that a fine mist-like spray is delivered to the produce materials.

Abstract: A fluid filtering stop valve having a body with a cylindrical chamber having a circumferential sidewall with inlet, outlet and flush ports, and a cylindrical plug member rotatably disposed in the chamber. The plug member has spaced apart first and second circular plates with an off-center filtering screen extending therebetween. The plug member is rotatably between a filtering position in which the screen is located in the fluid flow between the inlet and outlet ports, a backflushing position in which the screen is located in the fluid flow between the inlet and flush ports, with the filtering side of the screen toward the flush port, and a closed position in which an arcuate plate washer loosely retained between the first and second plates is positioned to seal the flush and outlet ports. In the filtering position the washer seals only the flush port and in the flush position the washer seals only the outlet port. The screen uses outwardly diverging ribs to reduce lodging of material between the ribs.

Abstract: A filtering device includes a head intended to be permanently installed in a fluid dispensing machine and a disposable canister therefor. A central chamber is formed in the head which chamber is in communication with an inlet port and an outlet port for receiving an unfiltered liquid and supplying a filtered liquid, respectively. The disposable canister has a flask shaped main body with a flat top and a neck of substantially uniform diameter on the top. The neck fits in the central chamber. A tube extending through the neck defines an annular clearance between the tube and the interior of the neck which annular clearance is in fluid communication with the inlet port. The opening into the tube located at the top of the neck is in fluid communication with the outlet port in the head. A pair of tab receptacle on the head and a complementary pair of tabs on the canister are engageable with one another by 1/4 rotation of the canister to lock the canister to the head.

Abstract: A water purifier houses a material for water treatment. The water purifier employs an active carbon as this water purifying material, and this active carbon has pores on the surface of which water soluble mineral component is provided.

Abstract: A water purifier apparatus for removing the bleaching agent, the smell of an adhesive used in joining water pipes, and other impurities from water supplied through a water supply system. The water purifier apparatus includes a body having a raw water outlet, a cartridge disposed in the body and housing a filter material, the cartridge having a raw water inlet and a purified water outlet with an enclosed water passage extending therebetween, the raw water outlet and the raw water inlet being coupled to each other in a watertight manner. The cartridge is subject to repeated stresses due to application of water pressure, which varies as the flow of water is turned on and off and since the cartridge that is replaced in a relatively short period of time, the cartridge may be of a relatively small mechanical strength. The cartridge is fixedly positioned in the body by a cover, which is prevented from becoming broken or damaged by varying stresses since these stresses are borne instead by the cartridge.

Abstract: A filter consisting of a housing, a rigid, porous filtering element, means for forming a primary filter path along the filtering element, and a non-rigid expanding element, wherein when a solution to be filtered flows through the primary flow path, filtrate passes through the rigid filtering element and particulate matter is retained on or in the filtering element. When the filter surface becomes clogged, the incoming solution is bypassed, reduced, or discontinued and the non-rigid expanding element expanded to first form discrete compartments of filtrate between the expanding element and the filtering element and secondly to force the discrete volumes of filtrate back through the filtering element into the flow path for removal. In one embodiment, the housing and filtering element consist of hollow cylinders and the expanding element extends lengthwise through the interior of the filtering element, expanding outwardly to expel particulate matter.

Abstract: A flow-through filter including a two-stage valve head assembly and a filtering body which is designed to provide a helical flow path for the solution over a cylindrical porous filter which captures the particulate matter contained by the solution being filtered. An extended filtering capacity is achieved due to the ability of the filter to remove and eject separated solids retained by the porous filter. An expander tube is positioned within the filter and, when connected to a pressure source, the expander tube forces solids from the pores and into the primary volume of the filter where a flushing medium is circulated. The filter clearing is made possible by an accurately controlled and metered volume of uniformly distributed reverse flow which effectively lifts the solid material out of the pores.

Abstract: A rotary filter for polymers comprises an inward flow filter drum mounted in a housing and consisting of inner and outer filter barrels 7 and 6 which retain between them a cylindrical filter element 8 of wire gauze or porous sintered metal. The outer barrel has regularly spaced large openings in its outer surface which communicate through the thickness of the barrel wall and via divergent passageways with even larger openings on the inner surface of the barrel. In contrast, the inner barrel has a plurality of much smaller through openings in registry with each of the large openings. The drum is rotated by a hydraulic ram via a pawl and pinion drive to bring successive openings in the outer barrel into communication with passages 22, 23, through which accumulated solids are flashed from the corresponding areas of the filter element by the resulting reverse flow of filtrate. The filter minimizes downstream pressure fluctuations and may be used upstream of an extruder.

Abstract: The invention provides a faucet-mounted water filter comprising an upright tubular diverter body that is adapted to be secured to the open end of the water faucet. At the bottom of the diverter body is a water outlet through which unfiltered water can be dispensed. In the diverter body is a valve with a valve outlet duct projecting from one side of the diverter body. A manually movable valve handle projects from the diverter body and is connected to the valve for directing the flow of water either through the water outlet (when unfiltered water is required) or for diverting water through the outlet duct. A filter housing is mounted upon the duct and is preferably connected to the diverter by means of the duct. A carbon block filter element is provided in the filter housing which includes a vertical water inlet surface on an outside wall and a water outlet at the bottom. The filter housing includes an annular water distribution chamber for unfiltered water which surrounds the filter element.