Abstract: A filter arrangement for an aquarium is disclosed. The filter arrangement can include a housing assembly, a pump assembly, a transfer tube assembly, and a valve assembly for controlling water flow through the transfer tube assembly. The transfer tube assembly can include a tube structure within which a valve body of the valve assembly is rotatably disposed. The tube structure can be formed from a first tube half mated to a second tube half to permanently secure the valve body within the tube structure. A valve operator can be connected to the valve body to advantageously allow a user to manipulate the flow of water through the transfer tube assembly. Control of water flow through the filter arrangement is beneficial for obtaining a desired water flow for a certain aquarium size and application and for reducing flow during certain periods, such as during feeding.

Abstract: Disclosed is an aquarium that includes a tank, a magnetic induction transmission apparatus, and a first electric equipment disposed in the tank. The magnetic induction transmission apparatus includes a driving module and a receiving module. The driving module is disposed outside the tank and adjacent to a tank wall of the tank and is configured to be separable from the tank, and the receiving module is disposed on the tank wall of the tank and disposed corresponding to a position of the driving module. The driving module is connected to an external power source. The receiving module is connected to the first electric equipment and is operative to generate an induced current when the driving module is powered on.

Abstract: An aquarium includes a tank body and a water pump, wherein the water pump includes a stator and a rotor and the tank body includes a tank wall; a rotor chamber arranged at one side of the tank wall close to inside of the tank body and configured to accommodate the rotor; a rotation shaft configured to support the rotor and arranged in the rotor chamber; an impeller configured to connect with the rotor and arranged in the rotor chamber; and a stator chamber configured to accommodate the stator, arranged at one side of the tank wall close to outside of the tank body and arranged corresponding to the rotor chamber so that the stator can drive the rotor.

Abstract: An apparatus (12) for treating water, in particular for removing surfactants from waste water, includes a vessel (14), defining an inlet (16) for receiving waste water containing air bubbles, and an outlet (20) for the exit of water, following treatment. Inside the vessel there is at least one tubular member (50) having a lower open end (52) into which the flow of waste water from the inlet may be directed in use. The tubular member (50) extends from the inlet towards a top of the vessel where an upper exit (54) from the tubular member is defined. In use, most un-aerated water entering the vessel through the inlet can exit the tubular member at the lower open end. Foam formed in the water by the air bubbles may travel up the tubular member to the upper exit, which is preferably located above the water level (60) in the vessel.

Abstract: A composite ozone flotation integrated device may include a cylinder body, an intermediate cylinder, and a central cylinder which are coaxial. The cylinder body and the center cylinder have a common bottom. The cylinder body and the intermediate cylinder have a common top. The intermediate cylinder is arranged on support channel steel between the cylinder body and the center cylinder. A top of the center cylinder is in the intermediate cylinder. The top of the center cylinder is open-mouthed. An upper part of the cylinder body is provided with a drainpipe. The top of the cylinder body is provided with an inner cylinder exhaust pipe and a slag discharge pipe. An upper part of the intermediate cylinder is provided with an outer cylinder exhaust pipe. A lower part of the center cylinder is connected to a water inlet pipe, a dissolved gas inlet pipe, and a venting and sludge-discharge pipe.

Abstract: A process for converting ammonium (NH4+) of a mainstream of a wastewater plant to dinitrogen gas (N2), including the consecutive steps of i.) removing biodegradable carbon compounds in the mainstream, ii.) converting ammonium (NH4+) in the mainstream to nitrite (NO2?) in an aerated biological process containing ammonium oxidizing bacteria (AOB) in a nitration vessel (133a-133d); and iii.) denitrifying the resulting stream from step ii.) to dinitrogen gas in an anammox vessel (200). Growth of nitrite oxidizing bacteria (NOB) in step ii.) is prevented by periodically subjecting the bacteria in said nitration vessel (133a-133d) to water suppressing growth of nitrite oxidizing bacteria (NOB).

Abstract: A draw latch retainer is used to secure a filter cartridge to a filter head. A cam actuated retainer extends from the head to engage a keeper in the top of the cartridge. Rotation of the cam draws the retainer and cartridge axially toward the head into an installed position. The retainer extends through an aperture in the upper portion of the cartridge to apply a retention force against the bottom side of the keeper. The keeper and upper portion of the cartridge supporting the keeper are configured to transmit the retaining force laterally across the top of the cartridge. The keeper may be integral with a top plate enclosing an open end of the cartridge housing, or may be supported by the top plate.

Abstract: An aquarium filtration system comprises an aquarium; a hollow ornament filtration device disposed adjacent to an inner bottom surface of the aquarium; and an aquarium support, capable of supporting the aquarium atop. The hollow ornament filtration device includes a main portion including a filter therein and a base including a magnetic impeller. In operation, the impeller draws a portion of water through a top opening of the main portion of the hollow ornament filtration device, through the filter, and out of at least one lateral opening of the base. The impeller is magnetically driven by magnets spun by an electric motor disposed in the aquarium support. In an embodiment, the filter is a replaceable filter cartridge including filtration media to provide mechanical and chemical filtration. Advantageously, all of the elements of the filtration system are hidden providing a more aesthetically pleasing experience.

Abstract: Disclosed is an out-of-vat liquid filter for ensuring reliable connection of a water pipe connector, comprising a liquid filtration tank and the water pipe connector. The water pipe connector comprises two water pipe connecting bases, a valve driving shaft, a latch tongue, a driving device with two degrees of freedom, and a handle. The latch tongue is driven by the driving device with two degrees of freedom to rotate about an axis of a first degree of freedom, thereby sliding into or our of a latch catch. The valve driving shaft is driven by the driving device with two degrees of freedom to rotate about an axis of the second degree of freedom, thereby opening or closing the water pipe connecting base in which each valve is located.

Abstract: A motorless reactor may include a base member, a tubular container, an inlet and an outlet, a pipe, and a head member. The tubular container may define a longitudinal axis extending between an upper end and a lower end, the lower end of the tubular container being coupled to the base member. The inlet and the outlet may be disposed proximate the upper end of the tubular container. The inlet may be configured to receive a pressurized flow of water from a reservoir, and the outlet may be configured to output a mixture of water and a predetermined substance. The pipe may be coupled to the inlet and may extend substantially parallel to the longitudinal axis from a first end proximate the upper end of the tubular container toward a second end proximate the base member.

Abstract: A media reactor aquarium filter incorporates a simple design and allows simple media replacement. The filter includes co-axial inner and outer tubes. The outer tube includes a mounting feature and the inner tube holds the media and is removable without disturbing the outer tube. A pump at the base of the filter pumps water into the inner tube through ports at the base of the inner tube and up through the inner tube, and this through the media. The filtered water then flows though the top wall of the inner tube and down between the inner and outer tubes, and back into the aquarium. The inner tube is rotatable to vary the alignment of the ports to adjust the water flow rate through the filter.

Abstract: A water circulation pump pre-filter unit (PFU). The PFU is submerged and provides structure to camouflage the system to give a natural and aesthetic look. The PFU comprises at least two cleaning systems: (1) biological cleaning mechanism; and (2) an internal self-cleaning mechanism. Specifically, the PFU comprises several filtering surfaces that form a repository for pond debris on which fish and other aquatic creatures feed, i.e., the biological cleaning mechanism. These filtering surfaces of the PFU also provide a protective barrier that prevents large debris from entering the circulation pump. The internal self-cleaning mechanism is a spray wash water source mechanism used to clean the PFU without removing the PFU or fish from the pond or entering the water. Together these features improve the quality of the water in the pond and extend the life of a pump.

Abstract: An inline intravenous (IV) fluid sterilization system can be located within directly upstream of the patient's access point, downstream of any breach points, so as to ensure fluid sterility. The chamber space between the walls is accessed by a fluid inlet port and a fluid outlet port between which the fluid flows. The inlet port is connected to a conduit/tubing from the fluid source and the outlet port is interconnected with a conduit/tubing that is free of breach points and interconnects to the patient access point. The inner wall allows for transmission of UV light into the fluid space. The walls define a space therebetween that is relatively small radially, allowing for a sufficient flow rate, but providing a large surface area and small fluid depth for exposure to the UV light. The UV light is provided by an elongated lamp within a cavity of the inner wall.

Abstract: Disclosed herein are wedge-shaped filter cartridges having a maximized upstream surface area. The filter cartridges are modular and may be stacked in a filter cartridge system.

Abstract: Disclosed are filter assemblies for an aquarium tank. The disclosed assemblies include a filter basket assembly in which one or more filter baskets are connected, either directly or indirectly, to a filter pump basket. The filter pump basket typically is located upstream of the one or more filter baskets and pumps water upwards through the filter basket assembly.

Abstract: An oil film cleaner includes a connected assembly connected to a buoy tube. The connected assembly has a first connected pipe and a second connected pipe. The first connected pipe is connected to the second connected pipe. The buoy tube is assembled to the second connected pipe and having a plurality of floating blocks and drainage openings defined thereon. Under this arrangement, when the bottom of each drainage opening is lower than a water level, dust and oil films which are floating on the surface of water are guided by the drainage openings and are ejected out by the buoy tube so as to maintain a cleanness of the surface of water.

Abstract: A vacuum device for an aquarium is disclosed. The device comprising a tube having a pump contained therein. The pump utilizes a ring-shaped rotor with interior vanes for impelling water through the device.

Abstract: A shower tube cleaning device for a filter for a water tank in which clean water from the filter is returned to the interior of the water tank through the shower tube, which is provided with a plurality of nozzles, wherein an operating rod (11) passing through the interior of the shower tube (5) is linked to a cleaner (10) slidably provided within the shower tube (5), a knob (12) is fixed to the free end of the operating rod (11), and pushing and pulling the knob (12) makes the cleaner (10) reciprocatingly slide to thus scrape off foreign matter within the shower tube (5). This enables an inner face of the shower tube to be cleaned while the shower tube is linked to the filter.

Abstract: An external filter for an aquarium includes a canister filter having a filter assembly removably oriented therein. The filter assembly includes at least two stacked trays releasably secured together in series. The stacked trays include a compartment for holding filter media. In one embodiment, the trays are releasably secured together with a strap. In one embodiment, the filter assembly also includes a handle. In one example, the strap forms a portion of the handle.

Abstract: Apparatuses, systems and methods aid in the cleaning of an aquarium and provide clean water to an aquarium. In particular, the present invention relates to an efficient, self-contained and simplified solution for cleaning aquarium tanks and replenishing clean water to an aquarium.

Abstract: Water filters which comprise a multitude of discrete filter media elements in a chamber require periodic cleaning. However, the elements tend to become adhered to one another and to the interior surface of the chamber. The invention provides a water filter for use with ponds, comprising a filter chamber for containing filter media, and a first movable cutting member provided substantially immediately adjacent the interior wall of the chamber for movement across the surface of the interior surface of the wall to break the adherence of filter media to the interior wall.

Abstract: A filtration device for an aquarium comprising a filtering chamber for receiving water and a filter medium therein wherein said filter medium comprises fibers having a diameter from 0.1 nm to 3000 nm and an aspect ratio of length to diameter of 5:1 to 10,000 to 1 wherein said fibers provide for colonization of nitrosomonas bacterium and/or nitrobacteria.

Abstract: Disclosed are vertical sock filters for aquarium filter assemblies. The sock filters typically include an annular collar coupled to filter material. The filter material typically is a composite material that includes upper material and lower material, where the upper material typically is more porous than the lower material. The assembly and the annular collar may include respective first and second coacting components that mate or interlock with each other.

Abstract: An aquarium filtration system with enhanced features comprising a continuous flow of filtered and processed water as well as a continuous drain system is herein disclosed. In such a manner, the water is continually changed over time, thus minimizing required emptying and/or cleaning. Additionally the system holds and maintains the desired pH level and water hardness, while controlling ammonia and nitrite levels. A filter on the incoming water line removes chlorine and other chemicals before the water passes onto the aquarium. The system works in conjunction with a conventional automatic water level controller. Automatic check valves control water flow and prevent back flow.

Abstract: The invention is directed to a filter system for ornamental ponds and stock tanks that has a housing defining an internal chamber. A number of feet are located on a lower flat surface of the housing, which hold the housing off of the bottom of the pond. A filter slot in the lower surface holds a filter. A pump is inside the internal chamber of the housing and has an inlet inside the internal chamber and an outlet outside the internal chamber of the housing. When the filter system is submerged, the pump draws water in along the bottom of the body of water through the filter. As a result, the debris on the bottom of the body of water is drawn into the filter. Once the debris is drawn into the filter, microbes in the filter are able to break down the debris.

Abstract: A filtering unit (1) for an aquarium is described, said filtering unit (1) comprising a closed casing (2), which is to be immersed in a liquid, inlet means (3), a liquid path (4) passing through filters (8), outlet means (5, 15-18), an electric pump assembly (6) for forcing liquid to circulate along said liquid path (4). The outlet means (5, 15-18) comprise a multiple outlet selector (18) which may allow selection of outlets (15-17), in particular in a vertical direction.

Abstract: A device and method for cleaning a water environment of sludge, comprising a chamber connected to a supply channel and a driving module. A supply channel (3) has a connector pipe outlet (32) in the upper zone (13) of the chamber (1), and the outlet (301) is located in this upper zone (13), and a sludge container (11) is in the lower part of the chamber (1) with impervious walls (12). A supply channel (3) and/or its outlet (32) is located inside the chamber (1) and/or tangentially to the chamber (1) wall (12). The device along with the chamber (1) and the supply channel (3) constitutes an integral part of aquarium or a replaceable module put into an aquarium. The chamber (1) is divided into compartments (120) set by vertical partitions (121).

Abstract: Disclosed are filter assemblies for an aquarium tank. The disclosed assemblies include a filter basket assembly in which one or more filter baskets are connected, either directly or indirectly, to a filter pump basket. The filter pump basket typically is located upstream of the one or more filter baskets and pumps water upwards through the filter basket assembly.

Abstract: Included herein is a carbon dioxide delivery system. The system may include any of the following: (1) a body of a liquid; (2) a carbon dioxide recapture element in communication with the body; (3) a carbon dioxide generator in communication with the recapture element; and (4) a carbon dioxide effluent line exiting the generator and in communication with the body. Also included is a process of delivering carbon dioxide. The process includes capturing a first gas having a measurable amount of carbon dioxide from a body of liquid. The method also includes transmitting the first gas to a carbon dioxide generator and delivering a carbon dioxide enriched gas to the liquid.

Abstract: An aquarium filter arrangement including a filter housing and a filter cartridge having self-spacing structure. The self-spacing structure being designed to automatically space the filter cartridge in an operable filtering position. The operable filtering position being a position at which the filter cartridge is seated against a single rib formed in the housing.

Abstract: The method and device for filtering liquid in an aquarium, the filtration device made by the liquid filtration method comprises a box-shaped casing, the filtration bodies and filtration materials are set inside the casing, wherein the casing includes a water inlet set around the casing and grid panels set inside both sides of the casing; the filtration bodies include an inner filtration body set inside the grid panels and an outer filtration body set outside the grid panels; the filtration materials are filled inside the casing, between the inner filtration body and grid panels; in this way, the liquid to be filtered enters into the casing through the water inlet and flows out from the grid panels, and proceeds further from the casing via the inner filtration body, filtration materials and outer filtration body treatment.

Abstract: A basin including: a front housing compartment (1) in which there is a lower point (3) for collecting the organic material to be removed; an equipment compartment (4) at the back of the basin, connected to the housing compartment; a drainage device, in the equipment compartment (4), which includes an “overflow” pipe (6) fixed to a siphon (7); the drainage device being capable of moving down in order to operate the siphon (7); and, a partition (8) between the housing compartment (1) and the equipment compartment (4), the partition being capable of keeping the animals inside the housing compartment and letting the water pass into the equipment compartment.

Abstract: A filtering device for an aquarium which can easily perform maintenance, inspection and repair of a pump is provided. The present invention is directed to a filtering device for an aquarium to be installed outside an aquarium 1. The device includes a casing 20 open to the atmosphere, a filtration zone Z2 formed in the casing for filtrating water W introduced from the aquarium 1, a discharge pump 35 for sending the water passed through the filtration zone Z2 to an outside of the casing and discharging it into the aquarium, a functional component zone Z1 formed in the casing and separated from the filtration zone Z2, and a functional component unit 3 having the discharge pump 25 and a unit frame 31 for supporting the discharge pump 35. The functional component unit 3 is insertably and detachably accommodated in the functional component zone Z1 of the casing 20.

Abstract: An aquarium pump including a first unit comprising a magnet in an encasement disposed against the outside panel of an aquarium or other tank, and a second, submersible unit comprising a magnet in an encasement and a motor, an impeller, and buoyant material contained within a chamber disposed against the inside panel of an aquarium or other tank and opposing the first unit. The magnet included on the second, submersible unit includes a plurality of recesses into which are inserted synthetically coated ball bearings that are allowed rotate freely, with a portion of the ball bearings extending outside the magnet thus allowing the ball bearings to make contact with the aquarium or tank wall and allowing the second, submersible unit to be maneuvered into place without the necessity of violating the aquatic environment. The buoyant material allows the second, submersible unit to remain fixed in place solely utilizing magnetic attraction.

Abstract: A dual pump water treatment system for automatically replenishing the water level within a tank of a marine reef aquarium by alternating between a calcium solution reservoir and an alkalinity solution reservoir. The calcium reservoir is in connection with a first pump, while the alkalinity reservoir is in connection with a second pump. The system includes a pair of water level sensors in communication with a solid state relay on a printed circuit board of a switch box. When the water level drops the sensor triggers the relay to turn on the calcium reservoir. When the water level is replenished the first pump is turned off. When the water level drops again, the sensor triggers the relay to turn on the alkalinity reservoir. When the water level is replenished the second pump is turned off. The cycle is repeated based on water level in the tank.

Abstract: An improved and more efficient design for an air driven algae filtration system is achieved because there are no moving parts other than an air pump, and the air is used twice. After using air to circulate water through a filtration unit, the air, still under pressure, is separated from the water. The air is then plumbed to other apparatuses or used for cooling. This allows the filter to be utilized using less electricity. The water is de-gassed before reaching the algae filter. Therefore, no splash guard is necessary to prevent water from splashing the lights. With no splash guard, lower wattage lights can be used to illuminate the algae. This also increases the efficiency of this system. This filter also lends itself to maintaining a reef aquarium.

Abstract: An aquarium filter arrangement including a filter housing and a filter cartridge having self-spacing structure. The self-spacing structure being designed to automatically space the filter cartridge in an operable filtering position. The operable filtering position being a position at which the filter cartridge is seated against a single rib formed in the housing.

Abstract: An aquarium overflow device capable of simplifying the structure and reducing the cost is provided. The present invention is directed to an aquarium overflow device for supplying the water W in an aquarium to an external device outside the aquarium and for supplying the water W in the external device into the aquarium. The device is equipped with an inverted U-shaped siphon pipe 55 for introducing the water W in the aquarium to an outside of the aquarium, the siphon pipe having an inlet side end portion to be disposed in the aquarium and an outlet side end portion to be disposed outside the aquarium, an inverted U-shaped discharge pipe 56 having an inlet side end portion to be disposed outside the aquarium and an outlet side end portion to be disposed in the aquarium, water conveyance means for discharging water from the external device to introduce the water into the discharge pipe 56, and a connection tube 8 connecting an upper portion of the siphon pipe 55 and an upper portion of the discharge pipe 56.

Abstract: An aquarium filter having a filter housing with a rounded bottom. The filter housing including a housing input that directs water into an interior chamber such that the water sweeps across the rounded bottom to reduce or eliminate dead spots and reduce particulate settlement.

Abstract: A photoelectrocatalytic oxidizing device having a photoanode being constructed from an anatase or rutile polymorph of Ti as the support electrode. Alternatively, the photoanode is a composite electrode comprising an anatase or rutile polymorph of Ti as the support electrode coated with a thin film of sintered nanoporous TiO2 derived from a stable, dispersed suspension of nanoparticulate TiO2. The device being useful for removing ammonia, protein and other contaminants from water in aquariums and aquacultures thereof. The device being cylindrical in shape and having a flow-through configuration.

Abstract: The application device for liquid containing micro-nano bubbles generates micro-nano bubbles in a wide size distribution with use of a submerged pump-type micro-nano bubble generator and a spiral flow-type micro-nano bubble generator. A micro-nano bubble generating aid metering pump is controlled by a bubble level meter and a level controller, so that the supply amount of a micro-nano bubble generating aid is controlled in response to the level of bubbles from a fluid level. The supply amount of a micro-nano bubble generating aid is also controlled by a turbidimeter and a controller in response to the turbidity of the liquid in a micro-nano bubble generation tank, while the amount of air supplied to the submerged pump-type micro-nano bubble generator is controlled in response to the turbidity of the liquid. Therefore, the device can produce a large amount of various micro-nano bubbles in a wide size distribution more economically.

Abstract: A dual pump water treatment system for automatically replenishing the water level within a tank of a marine reef aquarium by alternating between a calcium solution reservoir and an alkalinity solution reservoir. The calcium reservoir is in connection with a first pump, while the alkalinity reservoir is in connection with a second pump. The system includes a pair of water level sensors in communication with a solid state relay on a printed circuit board of a switch box. When the water level drops the sensor triggers the relay to turn on the calcium reservoir. When the water level is replenished the first pump is turned off. When the water level drops again, the sensor triggers the relay to turn on the alkalinity reservoir. When the water level is replenished the second pump is turned off. The cycle is repeated based on water level in the tank.

Abstract: A filtering unit (1) for an aquarium is described, said filtering unit (1) comprising a closed casing (2), which is to be immersed in a liquid, inlet means (3), a liquid path (4) passing through filters (8), outlet means (5, 15-18), an electric pump assembly (6) for forcing liquid to circulate along said liquid path (4). The outlet means (5, 15-18) comprise a multiple outlet selector (18) which may allow selection of outlets (15-17), in particular in a vertical direction.

Abstract: A filter assembly has an inlet for supplying a fluid to be cleaned and an outlet for returning cleaned fluid. A cloth filter is disposed between the inlet and the outlet. The filter has a web of filter cloth wound on a supply roll and guided along an effective filter area to a takeup roll for receiving clogged filter web. A motor is connected to the takeup roll for rotating the takeup roll and for transporting the filter cloth forward across the effective filter area. A switching device is connected to selectively energize the motor and to index the filter cloth forward by an amount less than a length of the effective filter area.

Abstract: This self contained, add-on, self cleaning, instant reverse flush aquarium and/or fish-pond filter system is designed to capture all aquarium and/or pond solid detritus and to deposit them in the spaces between a heavy marbles-like filter substrate in such a way that these detritus can then be often and regularly evacuated by reverse-flush action from the filter-body and the vessel containing this filter-body, very fast, very easily, without any in-tank manual intervention and with a minimal amount of water wastage. This instant reverse-flush aquarium and/or fish-pond filter system will be available in many various sizes, shapes or models that can be added at any time to any aquatic life containing vessel of any shape or size, with the purpose of easily evacuating pollution causing debris as often as possible, hereby minimising the need for biological and/or chemical filtration stages and also drastically reducing other stress causing maintenance.

Abstract: This invention provides a filtration system for home aquaria that uses a closed-circuit pathway having a surface that contacts a flow of water moving between a tank inlet and tank outlet. The surface allows for algal growth thereon, and for transmission of light thereonto so as to provide photosynthetic energy to the algae. The algae acts to scrub contaminants (nitrogenous compounds, for example) as part of its growth cycle, and thereby purify the water. Additional components, such as injected air and filter media can also be provided to the water circuit to enhance algal growth, oxygenate the water and remove particulates. In an illustrative embodiment, the surface is transparent or translucent and a light that transmits appropriate wavelengths (for example, full-visible spectrum) is placed in proximity to the surface.

Abstract: Enhancements to the Double Drain technology used for separation of settle-able solid wastes previously developed. Anti-vortex fins are added to the central clarified effluent water manifold to minimize re-suspension of settled solids. A further aspect includes the addition of a slotted horizontal cover plate to a solid waste collection sump below the tank floor. These additions significantly increase the effectiveness of the Double Drain system for separation of settle-able solid waste from fish culture water. The enhanced Double Drain Tank design with the anti-vortex feature could also be used in non-fish culture applications to enhance the separation of settle-able solids from any liquid waste water flow.

Abstract: Entrapping immobilization pellets for purifying breeding water in an aquarium to breed aquatic animals, wherein the entrapping immobilization pellets have a phosphorus content of 0.05 mass % or less.

Abstract: A selector valve of a pressure filter for aquariums or ponds comprises a valve body having a main liquid inlet opening (16), a secondary inlet opening (17), an outlet opening (18) and a discharge opening (19), a cursor (20) housed in the valve body (12), having a passage for the liquid (21) and being selectively moveable between a first position, corresponding to the filtration mode of the filter (11), wherein the main liquid inlet opening (16) is placed in fluid communication with the outlet opening (18), and a second position, corresponding to the washing mode, wherein the secondary inlet opening (17) is in fluid communication with the discharge opening (19), and a safety valve (36) included in the cursor (20) to protect the pressure filter in case of superpressure of the liquid.

Abstract: A filter cartridge including a filtering body. The filtering body having a non-horizontal or rounded bottom edge that aids in draining water from the filter cartridge during filter maintenance.