Abstract: A nozzle-type steam trap including a venturi nozzle, an orifice nozzle, or a tunnel structure resistance nozzle minimizes the outflow of steam even when a pressure difference between a drain-water inlet and a drain-water outlet of each nozzle fluctuates, the steam trap being compatible with any usage environments and enabling maintenance and inspection to be easily performed. The nozzle-type steam trap including the venturi nozzle, the orifice nozzle, or the tunnel structure resistance nozzle includes a means for sealing the nozzle by using a drain water. The nozzle-type steam trap further includes a plurality of steam inflow ports and drain-water outflow ports and includes a closure means for determining, for a selected one of the steam inflow ports and a selected one of the drain-water outflow ports, passages of steam and drain water. More preferably, the steam trap includes a swirl flow formation means in the vicinity of the nozzle.

Abstract: A filter device (10) includes a filter element (12) in a filter housing (14) with fluid connection points (16, 18) for the non-filtrate and filtrate. Fluid can be passed through the filter element in both directions for filtrating the non-filtrate or for backwashing for cleaning particle contaminations (72). A pressure control (36) generates a post-suctioning effect to improve the cleaning of the particle contaminations (72). The filter device (10) is designed as a one filter-element solution. In a predetermined exchange, the single filter element (12) for filtering can be used for backwashing or can be backwashed using the pressure control device (36). A hydraulic system (64) and a method for backwashing a filter element (12) of a filter device (10) is provided.

Abstract: A water inlet valve providing stain resistance, easy cleaning, and quick disassembly includes an inlet passage having an insert opening disposed at an upper end of the water inlet valve; an inlet divider; a filter component connected to the inlet divider to form a filtering dividing mechanism, and a water stop valve in communication with the water inlet valve that that controls the water inlet valve to stop water flow. The filter component and the inlet divider are disposed between the inlet passage an outlet of the inlet valve, water flowing through the inlet passage is filtered and is divided into two waterways by the inlet divider including a main waterway that flows to the outlet for inletting and a sub-waterway that flows to the water stop valve, and the filtering dividing mechanism is inserted into the inlet passage through the insert opening and is disassembled from the insert opening.

Abstract: A filter element includes filter media, first and second end caps, a latch arrangement projecting from the first end cap, a tubular neck extending from the first end cap and a valve head oriented within the first end cap aperture constructed and arranged to move between a position sealing the first end cap aperture and exposing the first end cap aperture. A filter assembly includes a filter element, as characterized herein, and including a filter base and a service cover. A method of servicing includes removing an old filter element, operably mounting a new filter element in a filter base including engaging a valve head against a spring member in the filter base, and operably mounting the service cover over the new filter element and filter base.

Abstract: A portable direct current water-cleaner includes a tank for containing water, a pump installed in the tank for pumping the water, a filter installed in the tank for filtering the water and a valve installed in the tank and movable between a first mode for directing the water from the pump to the filter so that the pump makes the water travel through the filter fast and a second position for bypassing the filter.

Abstract: A filter has three filter elements, e.g., screens, for trapping particulate material while allowing passage of a fluid. The second sides of each of the first and second screens are connected to an intermediate passage, and the second side of the third screen, and the intermediate passage, are connected to a filter outlet port. The filter has two alternately selectable configurations. In a first configuration, the first side of the first screen is connected to a filter inlet port, and the first side of the second screen is connected to the first side of the third screen. In the second configuration the first side of the second screen is connected to the inlet port, and the first side of the first screen is connected to the first side of the third screen. The first and second screens alternately filter particulates which are subsequently flushed and then trapped by the third screen for periodic removal.

Abstract: A water conditioner valve configured for use with a tank in a water conditioning system, including a main housing a working portion disposed within the main housing and further including at least one valve chamber, and at least a portion of the working portion is mounted within the tank.

Abstract: Regeneration of water treatment media is disclosed which includes a water treatment unit having one or more media therein, and which upon initiation of flow of the water, imparts turbulence and abrasion to the treatment medium to automatically cleanse the medium of light solid contaminants, as well as contaminant coatings on the media. This greatly improves the operation of the media and extends its life. In addition, the water treatment unit disclosed may simply be rotated through any one of a number of positions between service, backwash, flush, off, and/or bypass operational modes for further regeneration of the treatment media.

Abstract: A multimedia fluid treatment unit and rotatable valve are disclosed in which a plurality of discreet containers are removably stacked upon each other and contain various different and distinct water treating media. The rotatable valve is rotatable between either of three positions one of which is a service position for routing the water to be treated through the unit for treatment, a second of which is a rinse position for rinsing the media in the unit, and a third of which is a backwash position for backwashing and/or regenerating the media.

Abstract: A filtration apparatus includes an array of filters arranged in parallel about a rotatable assembly 24 for successively backwashing each of the filter elements 19 within the array. The rotatable assembly includes a connector bachwash shoe 26 and a cage having an annular circlip 33 supporting a valve element 31 therein. During normal filtration, water flows up the inlet tube 11, through a respective opening 17 into filtration chamber 13, and then through a respective filter element. The filtrate flows upwardly into plenum 16 and out through outlet 14. In a backwashing mode, the assembly 24 is rotated by a moving means that includes shaft 22 driven by a stepper motor 34 such that the valve element is radially unseated out of the backwash outlet 30. Each filter element is then backwashed in turn as an L-shaped passage 27 of the bachwash shoe is aligned with a respective opening 17 allowing backwash fluid to flow out opening 28a to the backwash outlet.

Abstract: A compact reversing flow catalytic converter for reducing noxious substances in exhaust gases produced by internal combustion engines is described. The catalytic converter includes a valve unit which reversibly directs exhaust gases through a container filled with catalytic material. The container defines a U-shaped gas passage which communicates with two ports at a top of the container. The valve unit is mounted to the top of the container and includes an intake and an exhaust cavity. The valve unit includes a valve disk having two openings therethrough and rotates around a perpendicular central axis between a first and second position. In each position, each opening communicates only with one of the cavities and one of the ports. In the first position, the exhaust gases enter the exhaust cavity from an exhaust pipe and pass through one of the openings into the gas passage where they contact the catalytic material as they travel through the U-shaped gas passage and enter the exhaust cavity.

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 control device for at least two partial fluid ducts comprises a common fluid supply duct and a common fluid removal duct. The fluid supply duct is connected with the fluid removal duct by at least two partial fluid ducts. A filtering device, a valve device each having a blocking element, and a stop valve are each located in a corresponding partial fluid duct. Each blocking element of the valve device operates in such a way that the blocking element can be moved between a first (open) position, in which the fluid flowing through the partial fluid duct in which it is located is filtered, and a second (closed) position, in which the fluid is filtered in the other partial fluid duct, whereas at the same time the filtering device provided in the partial fluid duct in which it is located is washed by the fluid flowing in the reverse direction. Furthermore, each blocking element can be brought from the first position into the second position and vice-versa by rotating the blocking element.

Abstract: A filter and a filter and valve assembly primarily intended for use in fluid analyzer systems for particulate or coalescing filtration of fluids includes a filter assembly having a base element with all port openings in the base and with the port openings arranged so that the assembly can be mounted in a variety of selected positions. An integrally valved filter assembly is also disclosed and is provided with a rotary valve that can control flow between a filter chamber and multiple supply and/or discharge ports.

Abstract: A filter having a filter element is provided for a rockdrill. The filter can be operated in three modes, namely, filtering or drilling, rinsing and back-flushing. As the filter element becomes clogged a handle on the filter can be turned to a back-flushing mode position whereby the flow of fluid through the filter element is reversed and the flow of fluid thereby expels dirt and debris accumulated in and on the filter element to the atmosphere through the a outlet port. When the handle is turned back to a filtering mode position ports in a support shaft in the filter pass through the rinsing mode which washes dirt that may have accumulated on the filter element during the back-flushing mode and expels it to the atmosphere through the vent outlet port. When the handle is positioned in the filtering mode position the filter element is clean.

Abstract: In the filtering apparatus for an extrusion machine, a stream of heat-softened plastic material arrives via a flow conduit in a filter housing at an outlet, and thereby permeates replaceable filter means which are carried by a slide which is temporarily slid out of the stream of plastic material. For this, the slide comprises two chambers, forming flow conduit sections and arranged spaced in tandem in the direction of displacement, both of which are closed by filter plates. The slow conduit sections being, at a specified position of the slide in the filter housing internally in flow connection via, in each case, a port, with the outlet conduit in the filter housing and, externally via the filter plates, with the inlet conduit or with a backflow conduit in the filter housing.

Abstract: A valve structure for a swimming pool water filter includes:(a) a hollow body having multiple flow apertures,(b) a rotary plate on the body and having flow porting, the plate being movable toward and away from said flow apertures,(c) seal means between the body and plate,(d) a handle having operative connection to the plate to rotate said plate to bring said plate porting into and out of selected registration with said flow apertures,(e) and means mounting the handle to pivot without rotating the plate, and between a first position in which the handle has moved the plate to energize the seal means to seal off between the body and plate, and a second position in which the handle has moved the plate to de-energized said seal means.

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 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 multi-element filter unit includes backwash apparatus and comprises a filter casing with provision for alternative, oppositely directed process liquid and backwash liquid flows therethrough. A plurality of filter tubes are close spaced within the filter casing. A flange engages the filter tubes and divides the filter casing into first and second chambers. Apparatus for sequentially backwashing the filter tubes during a backwash interval removes collected solids from between the filter tubes by flow of backwash liquid from one filter tube outward toward the exterior of adjacent filter tubes.

Abstract: Apparatus for mechanical purification of waste water has a stationary hollow shaft which is installed in a vessel for waste water and carries a variable number of hollow drum-shaped frames with pairs of filters adjacent to the openings in their sidewalls. Waste water is drawn into the interior of the frames by a pump which is connected to one end of the shaft whereby the impurities deposit at the outer sides of the filters. Such impurities are removed from time to time by suction heads which are adjacent to the outer sides of the filters and are connected to a single sludge pump by discrete conduits, one for each frame. The inner sides of the respective filters are then sprayed by clean water which promotes segregation of impurities and their entry into the suction heads. Indexible valving elements are provided to connect conduits for admission of clean water into selected frames with a single source of clean water and to connect selected conduits for removal of impurities with the sludge pump.

Abstract: The present invention related to a filter consisting of a stack 4 of elements 5 comprising one cylindrical side and each element consisting of several isolated sections 23-24 and provided with orifices 35 for communication of its sections with the circumferences of the element and with a rotary distribution valve 37 mounted to rotate coaxially with the cylindrical side and comprising a chamber 22a for the isolation of a first section 23 from any element of the other sections, communicating with this first section through a port of the distribution valve.The form of the port 22a and the layout of the orifices 35 are such that the first sections 23 of only one part of the elements are in communication with the chamber 22a.One application is the manufacture of a filter of small size and high efficiency.

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 multiple change-over valve which can be set into various positions suite for the operation of a water treatment plant. A moulded synthetic resin body defines two valve units with seats for two movable assemblies controlled by cylinder-piston systems such as to assume two positions; each of the two movable assemblies comprises at one end a cavity with lateral apertures, and in an intermediate position longitudinal passages for cooperating with various passages, including transverse passages, between the two seats, and with passages for communication with the top and bottom of a resin column. A suction feeder for the regenerating solution, in the form of a venturi tube, is fixed between the water feed and the top of the column in order to operate when the column is connected to discharge.

Abstract: A filter arrangement has two hollow, coaxial, cylindrical filter elements, one of which is closed at one end and the other of which is connected to a clean fluid outlet. The outsides of the filter elements are separated from each other by an intermediate ring. A three-way valve is operable by an operating member to connect an inlet for the raw fluid to either or both of first and second filter elements. A control member operates valves for opening and closing an outlet for dirty fluid is operated at the same time with the three-way valve, dependent on its position. Both filter elements can be used simultaneously for filtering and also flow can be reversed through either filter element.

Abstract: Apparatus for removing suspended solids from electroplating solutions and the like includes a housed cluster of slotted plastic tubes about which are fitted fabric filter sleeves and through which the solution is normally forced into the tubes continuously in the course of filtering. The process is interrupted relatively briefly when likely to be impaired by solids build-up, and flushing with water at a common utility-source pressure is then uniquely valved to take place in the reversed direction sequentially through the several sleeves by way of relatively slender sparger pipes each mated within a companion one of the slotted tubes and proportioned to spray a multiplicity of fine high-velocity streams through the slots and forcefully directly against the surrounding filter sleeving, to dislodge particulate material for drainage.

Abstract: A valve is provided adapted to multiple modes of use including filter, backwash, rinse, recirculate, and direct to waste, on a swimming pool filter of the type normally filtering water under pressure through a backwash-regenerable filtering medium disposed in a filter tank. The valve comprises closely interfitting, relatively rotatable inner and outer sections having coaxially tapered annular walls defining interiorly open spaces respectively within the sections; the outer section wall has formed therein circularly spaced outer ports including an inlet port, a first outlet port, and a second outlet port. The inner section is normally seated against the outer section wall, its interior space being adapted to define a continuation of the filter tank in continuously hydraulically filled relation against unseating pressure imbalances across the inner section.

Abstract: A control unit is formed of a housing containing a filter with an inlet and outlet in line above the filter, the latter forming a channel with the housing; a pressure reducer is positioned between the inlet and the outlet above the filter. A rotary valve positioned between the filter and the pressure reducer reverses the flow in the unit. A plug-valve is located in the housing to provide drainage and the plug-valve is connected to the rotary valve so that on reversal of flow, the plug-valve opens to drain the unit.