Abstract: A drain system for water quality. The drain system may include one or more baffles. The one or more baffles may be arcuate in shape. The one or more baffles may include one or more openings therethrough. The one or more baffles may be offset in elevation. The one or more baffles may include one or more flanges projecting therefrom. The one or more baffles may be implemented in a flow-through manhole application.

Abstract: A filter assembly includes a filter housing having a longitudinal axis, the filter housing divided into a first filter chamber and a second filter chamber, a first element bottom endplate, a second element top endplate, an intermediate endplate positioned along the longitudinal axis between the second element top endplate and the first element bottom endplate, a first filter element housed within the first filter chamber and comprising first filter media positioned between the first element bottom endplate and the intermediate endplate, and a second filter element housed within the second filter chamber and comprising second filter media positioned between the second element top endplate and the intermediate endplate.

Abstract: An F.O.G. separation apparatus includes a tank for receiving a liquid effluent flow containing water, F.O.G., and gross solids. The tank has a chamber, an inlet in an inlet module, a downstream section and an outlet in an outlet module. The inlet module has a weir for the effluent downstream of a strainer to strain gross solids from the effluent. A pump upstream of the strainer pumps water and solids that do not pass through the strainer. The pump's rotatable vertical shaft has a motor at an upper and an impeller at the bottom. A pipe connected to the inlet module near the impeller conveys solids and water when the pump is activated and directs the solids and water to the outlet. F.O.G. and water entering the tank pass to the downstream section where the F.O.G. is removed from the water by a skimmer, and the residual water exist the tank through the outlet module.

Abstract: An air cleaner assembly, a main filter element, a safety element, combinations and methods for servicing an air cleaner assembly are provided according to the present invention. The air cleaner assembly includes an air cleaner housing and a main filter element. The air cleaner housing includes a safety liner that supports the main filter element, and can be configured to help reduce the tendency of the main filter element to rotate during use of the air cleaner assembly. A safety element having two open ends, for use with such an assembly is described.

Abstract: A drain system for water quality. The drain system may include one or more baffles. The one or more baffles may be arcuate in shape. The one or more baffles may include one or more openings therethrough. The one or more baffles may be offset in elevation. The one or more baffles may include one or more flanges projecting therefrom. The one or more baffles may be implemented in a flow-through manhole application.

Abstract: A coalescing filter element provides an integrated filter element with a three stage design with a hydrophobic or hydrophilic coalescing layer. A coalescing filter element comprises: a) At least one particulate filtration layer; b) A coalescing layer promoting coalescing of water particles, wherein the coalescing layer is downstream of the at least one particulate filtration layer relative to the flow of fluid through the element; c) An annular coalescing space downstream of the coalescing layer; d) A sump in a lower portion of the filter element in fluid communication with the annular coalescing space; and e) A hydrophobic layer downstream of the annular coalescing space, wherein fluid being cleaned by the element flows through the hydrophobic layer. The coalescing layer may be a hydrophobic or a hydrophilic coalescing layer. A filter assembly will include the coalescing filter element of the present invention.

Abstract: Disclosed are systems and methods for waste water treatment. A filtration gel includes about 30-45% by weight poly(ethylene) oxide, about 30-40% by weight propylene glycol, about 10-20% by weight glycerin (at least 65% pure), about 5-10% by weight NaCl, about 1-5% by weight fumed silica, about 1-6% by weight silica dioxide, and about 0.5 to 5% calcium as mixed salts.

Abstract: A fluid filter cartridge has a first filter element and a second filter element. The first and second filter elements are arranged consecutively along a longitudinal extension of the fluid filter cartridge. The first filter element has two opposite end faces, one of the end faces being covered by a connection end cap and the other end face being covered by a first end cap. The second filter element has an end face being covered by the connection end cap and another end face covered by a second end cap. At least one port is at the connection end cap in fluid communication with at least one of the first filter element and second filter element. A central axis of the connection end cap orthogonal to a main extension plane of the connection end cap is offset in relation to a central axis of the first end cap orthogonal to a main extension plane of the first end cap and/or a central axis of the second end cap orthogonal to a main extension plane of the second end cap.

Abstract: A fuel filter insert for a fuel filter including: a pre-filter element having a upper and lower end plate, the end plates arranged on opposing ends of filter medium of the pre-filter element; a main filter element having upper and lower end plates, the end plates arranged on opposing ends of filter medium of the main filter element; wherein the pre-filter element and the main filter element as arranged one above the other in a direction of a longitudinal axis of the fuel filter insert; wherein at least one of the filter elements is through-flowable from the outside to the inside by fuel in a radial direction relative to the longitudinal axis; and a flow channel for the fuel pre-filtered by the pre-filter element; wherein the flow channel is arranged to extend in the axial direction between the pre-filter element and the main filter element.

Abstract: A filter device, in particular for fluids polluted with admixtures of water, such as diesel oil, includes a filter housing (1) having a fluid inlet (43), a fluid outlet (44) and a filter element (9). During the filtering process, the fluid can flow through the filter medium (11) of the filter element from the unfiltered side (14) to the filtered side (13) of the filter medium and into its inner filter cavity (17). On at least one side of the filter medium (11), a water-separating system (23) has a separating region (25) for separated water. The water separating system is connected via at least one water opening (35) that is open toward the separating region (25) to a water collecting chamber (45). The filter element (9) has a passage (29) forming a fluid connection to the inner filter cavity (17) and can be connected to an element receptacle (47) of the filter housing (1). A fluid-conveying system (41) forms fluid paths separated from each other.

Abstract: A filter device may include a filter housing and a filter element defining a longitudinal axis disposed in the filter housing. The filter element may be configured to be penetrated by a fluid flow in a radial direction from a raw end to a pure end of the filter element. A water separator may be disposed at the pure end of the filter element and arranged axially spaced from the same. The water separator may have a hydrophobic and annular diaphragm extending in an axial direction of the filter element configured to be penetrated by the fluid flow from a raw end of the water separator in a radially outward to a radially inward direction with respect to the longitudinal axis to separate water from the fluid flow.

Abstract: A filter, in particular for fluids polluted by admixtures of water, such as diesel oil, includes a filter housing (1) receiving at least one filter element (9). During the filtering process, fluid can flow through the filter medium (11) from the outer unfiltered side (13) of the filter element into an inner filter cavity (17) forming the filtered side (19). A water passage (39) inside a pipe connector (35) of an end cap (23) forms a fluid path (51), which is separated from the other fluid path (55) that forms the connection between the inner filtered side (19) of the filter element (9) and a fluid outlet (37) of the housing (1) in the functional position of the filter element (9). The element receptacle (29) forms a through-passage (59) toward the water collecting chamber (31). Scaling assemblies (83, 87) located between the through-passage (59) and the pipe connection (35) of the end cap (23) delimit a connecting chamber (36) on the outside of the pipe connector (35).

Abstract: A coalescing filter element provides an integrated filter element with a three stage design with a hydrophobic or hydrophilic coalescing layer. A coalescing filter element comprises: a) At least one particulate filtration layer; b) A coalescing layer promoting coalescing of water particles, wherein the coalescing layer is downstream of the at least one particulate filtration layer relative to the flow of fluid through the element; c) An annular coalescing space downstream of the coalescing layer; d) A sump in a lower portion of the filter element in fluid communication with the annular coalescing space; and e) A hydrophobic layer downstream of the annular coalescing space, wherein fluid being cleaned by the element flows through the hydrophobic layer. The coalescing layer may be a hydrophobic or a hydrophilic coalescing layer. A filter assembly will include the coalescing filter element of the present invention.

Abstract: An air cleaner assembly, a main filter element, a safety element, combinations and methods for servicing an air cleaner assembly are provided according to the present invention. The air cleaner assembly includes an air cleaner housing and a main filter element. The air cleaner housing includes a safety liner that supports the main filter element, and can be configured to help reduce the tendency of the main filter element to rotate during use of the air cleaner assembly. A safety element having two open ends, for use with such an assembly is described.

Abstract: A filter device has an annular particle filter having a raw side face and a radially separated clean side face, and axially opposing end faces. An annular water separating element is arranged in a flow path downstream of the particle filter, the water separating element circumferentially surrounding the particle filter at a radial spacing. An open inner annular space is defined by and between the particle filter and the water separating element and an outer annular space is defined by and between the water separating element and the filter housing.

Abstract: A filter device may include a ring filter element arranged in a filter housing in an upright manner. The ring filter element may have an upper end disc and a lower end disc. A dirt pot may have a water separator arranged therein and be provided on the lower end disc. The dirt pot may also have a protruding pin. A channel may be configured to receive the pin and be provided on at least one of a filter housing pot and a functional element. The filter device may be operational when the pin engages into the channel.

Abstract: A filter device, in particular for fluids polluted with admixtures of water, such as diesel oil, includes a filter housing (1) having a fluid inlet (43), a fluid outlet (44) and a filter element (9). During the filtering process, the fluid can flow through the filter medium (11) of the filter element from the unfiltered side (14) to the filtered side (13) of the filter medium and into its inner filter cavity (17). On at least one side of the filter medium (11), a water-separating system (23) has a separating region (25) for separated water. The water separating system is connected via at least one water opening (35) that is open toward the separating region (25) to a water collecting chamber (45). The filter element (9) has a passage (29) forming a fluid connection to the inner filter cavity (17) and can be connected to an element receptacle (47) of the filter housing (1). A fluid-conveying system (41) forms fluid paths separated from each other.

Abstract: A stormwater treatment unit comprising a containment vault having an inlet and an outlet separates debris from a flow of stormwater through the unit. The water flow is controlled by a wall which directs flow from the inlet to the outlet through a reservoir of fluid in the unit. Debris separation by density occurs whereby lighter elements such as oil float on top of the fluid and heavier elements such as sediment collect at the bottom of the unit or in collectors in the reservoir. A wire mesh, deflector, and/or ripple boards placed beneath the inlet further increase efficiency of the separation, and a vent pipe is placed above the outlet to release pressure built up in the outlet during operation. A stormwater treatment system and method of retrofitting an existing stormwater trunk line locates the stormwater treatment unit in an off-line position from an existing drainage trunk line.

Abstract: A waste/sediment collecting container has a front vertical wall, a back vertical wall, two side vertical walls, and a sloped bottom surface. Along the lowest portion of the sloped floor surface lays a debris grate which allows water and pieces of sediment to pass through (but prevents larger pieces of waste from passing). The collection container includes a sump directly beneath the debris grate for collecting heavy sediment which passes through the grate. Sloped walls along the sides of the sump lead to U-traps on both sides of the container that allow liquid to pass through but prevent any solid waste from leaving the sump. Solid waste may be removed from the sump by removing the threaded service cap from the drain hole. Located beyond the traps are filter chambers having drain holes for inserting sediment filters which liquid passes through and exits the container.

Abstract: A filter assembly having a first stage filter that filters particulates from fluid flowing through the filter and a second stage filter downstream of the first stage filter that coalesces water from the fluid. By providing the first stage filter upstream of the second stage filter, particulate filtration capacity and efficiency may be provided while protecting the second stage filter from particulates. Protecting the second stage filter from particulates allows for the life of the second stage filter to be extended while providing efficient emulsion removal in the filter assembly.

Abstract: A slow/intermittent sand filter that purifies polluted water by flowing through sand in a manner that achieves greater purity and permits simpler and more effective maintenance than existing filters.

Abstract: Separation media, separation modules and methods are provided for separating water from a water and hydrocarbon emulsion and include a fibrous nonwoven coalescence layer for receiving the water and hydrocarbon emulsion and coalescing the water present therein as a discontinuous phase to achieve coalesced water droplets having a size of 1 mm or greater, and a fibrous nonwoven drop retention layer downstream of the coalescence layer having a high BET surface area of at least 90 m2/g or greater sufficient to retain the size of the coalesced water droplets to allow separation thereof from the hydrocarbon.

Abstract: An automatic draining system is provided. The system includes a floating valve having a density less than a first fluid and greater than a second fluid. The floating valve has a floating position that allows the first fluid to pass through a floating valve opening when the floating valve compartment is filed with the first fluid, and a sealing position that prevents the first and second fluids from passing through the floating valve opening when the floating valve compartment is not filled with the first fluid. Also included is a solenoid valve in fluid communication with the floating valve compartment. The solenoid valve has a solenoid opening that is open when the solenoid valve is energized and is closed when the solenoid valve is de-energized. Further included is a filter media downstream of the solenoid valve that filters the first liquid prior to the first fluid exiting the system.

Abstract: The invention relates to a fuel filter (1) with a device for separating water from the fuel. This device comprises at least one filter screen element (6) placed in a filter housing (2) which is located downstream a filter element (3) for the filtration of particles from the fuel, a tank (15) located under the filter screen element (6) at the filter housing (2) in which the separated water droplets are collected, and a device for deviating the fuel between the filter element (3) and the filter screen element (6).

Abstract: Disclosed are coalescing media for coalescing a mixture of two phases, namely a continuous phase and a dispersed phase. The disclosed coalescing media has multiple layers with distinct porosities, where an interior layer of the coalescing media has a higher porosity than the layers immediately adjacent to the interior layer. The disclosed media may be utilized in coalescers, coalescing systems, or coalescing methods for removing the dispersed phase from the mixture.

Abstract: A filter cartridge, which is suitable in particular for purifying dental waste waters, has a housing with three different spatial regions which receive three different filter materials having different filter properties. The first filter material is preceded by a sedimentation space.

Abstract: An apparatus and method to separate grease and solids from wastewater before reaching the sewers using a grease trap, wherein said grease trap comprises a detachable residue trap reducing turbulence and including a mesh which efficiently trap solid particles from the water waste in other to make easier the compliance with regulating agencies.

Abstract: A hydraulic system for a transmission has a diffuser housing with a fluid inlet passage that feeds one or more pump inlet ports, and a fluid return passage, such as to return fluid from a pressure regulator valve, that is in fluid communication with the fluid inlet passage. The hydraulic system also has a filter housing with a filter outlet portion that is in fluid communication with the fluid inlet passage upstream of the pump inlet port(s). The fluid return passage is downstream of the filter outlet portion. Thus, flow through the fluid return passage can create suction, causing increased flow through the filter outlet portion, such as from a fluid sump. Specifically, the diffuser housing is configured so that the fluid inlet passage has a converging portion downstream of the filter outlet portion and a diverging portion downstream of the converging portion.

Abstract: Disclosed are coalescing media for coalescing a mixture of two phases, namely a continuous phase and a dispersed phase. The disclosed coalescing media has multiple layers with distinct porosities, where an interior layer of the coalescing media has a higher porosity than the layers immediately adjacent to the interior layer. The disclosed media may be utilized in coalescers, coalescing systems, or coalescing methods for removing the dispersed phase from the mixture.

Abstract: A rear half part of a surface of a main body of a working oil tank installed in line with a control valve opposing to the valve is dented in an inclining surface shape in the direction moving away from the valve so that between both the tank and the valve, is formed a working space for attaching and detaching a pressure compensating spool, while return tubes are separately connected to the upper and the lower side of a filter case side wall within the body. Within the body, is provided a cylindrical filter case having a bottom in which a return filter for return oil is housed, and the return tubes are connected to the case side wall in a state of communicating with the inside of the filter case.

Abstract: A storm water filter box has a floatable skimmer apparatus for preventing floatable debris from entering the filter box outlet. The filter box has an inlet and an outlet and an inlet filter located in the filter box housing. A portable skimmer is positioned in the box between the inlet and outlet and will rise and fall with the water level in the filter box to keep the top of the skimmer above the water level and force the storm water passing through the filter box under the floatable skimmer thereby blocking floatable debris from entering the filter box outlet.

Abstract: A refuse/oil removing device and a refuse/oil recovery bag are provided which can remove refuse and oil contained in drainage discharged from a restaurant in a simple manner without contact with the refuse and oil. A support base of a support unit is disposed in the interior of a grease trap at a position higher than the water level. A recovery bag is attached to the support unit and plural layers of bag portions of the recovery bag are put on the support base. The bag portions are each formed of a material which permits the adhesion of oil thereto and a large number of water passing holes are formed in each of the bag portions. Drainage is introduced inside the innermost one of the plural layers of bag portions and is passed through the bag portions, allowing refuse and oil to adhere to the bag portions. In this way, the job of replacing the recovery bag can be simplified and the amount of oil accumulated within the grease trap can be decreased.

Abstract: An integrated system for treatment of inorganic liquid waste is disclosed that quickly and efficiently processes large quantity batches of such liquid waste by initially removing solids and sludge and subsequently processing the liquid waste to remove other materials so that the processed liquid waste can be recycled in a conventional sewer system. Larger solids, sludge, and free phase oil are removed by the system before they enter the liquid waste processing equipment, thereby preventing damage to the processing equipment caused by these substances. The use of common liquid waste and sludge delivery lines on all of the contaminant removal reactors in the system facilitates the efficient operation of the system with a minimum of operator intervention being required.

Abstract: A combination filter assembly housing (4) and treatment chamber (8) for use in recovering and sanitizing condensates from air conditioning systems and other sources with vapors released from dissolvable tablets (32), such as those used for treating swimming pool water or laundering purposes. Filter assembly housing (4) has a removable bottom cover, an internal p-trap and valve structure configured to reduce the likelihood of treatment vapors from treatment chamber (8) traveling back through filter assembly housing (4) and entering the associated condensate producing system. Applications can include, but are not limited to, use with systems that replenish water lost from swimming pools due to evaporation, to provide water for filling toilets, pressure washing, cleaning, and other gray water uses, and to provide potable water in areas where is in limited supply.

Abstract: A pretreatment particle-accelerating deposition and separation apparatus and method for purifying turbid raw water, which based on the theories of laminar flow requirement, particle-accelerating vertical deposition and water horizontal movement, separates water molecules from turbidity particles in a laminar flow region (with a Reynolds number lower than 1,000). By accelerating the velocity of high-turbidity raw water and the turbidity particles, the particles settle vertically because of inertia. Thus, the turbidity particles can be removed physically from the raw water and clean water can be collected at different heights of the apparatus while concentrated turbid water can be released to a nearby body of water after appropriate treatments. Thereby, turbid water can be purified for the subsequent coagulation, sedimentation and filtration processes in traditional water treatment plants.

Abstract: Apparatus is provided for separating oil from compressor condensate. It comprises a separator having an upper chamber provided with a condensate inlet and a filter housing containing a hydrophobic oleophilic substance so that in use condensate flows from the upper chamber through the filter housing under the action of gravity. The upper chamber contains a coalescing filter connected with the condensate inlet. In an alternative structure, a holding tank is series connected with a separator, and means is provided for supplying a de-emulsifying agent to condensate in the holding tank before the condensate is supplied to the separator. The above apparatus can carry out a method which comprises mixing the condensate with de-emulsifying agent, holding the mixture while emulsion cracking at least partly proceeds, and supplying the at least partly cracked emulsion to a separator containing a hydrophobic oleophilic substance.

Abstract: The present invention provides a method of installing an environmental control system so as to allow for separate sizing of treatment and bypass capacity while also offering the ability to make or change either treatment or bypass capacities at different times. This is accomplished by containing the treatment and bypass functions in separate chambers, using screen, baffle, or coalescing media pack to further refine effectiveness and capacity of each structure independently. The control structure and interceptor structure may be pre-engineered to a variety of sizes, capacities, or other specifications. This allows simple selection of a specific control structure and a specific interceptor structure from a variety of combinations, eliminating the need for custom engineering for each installation.

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

Abstract: A filter apparatus having a filter membrane, a main body, a supply channel running perpendicular to the surface of the filter membrane and a gap running between it and the filter membrane, for the formation of a tangentially directed transverse flow, a return channel connected with the supply channel, a circulation channel located around a circumferential edge of the membrane, having an inlet connected to the gap and an outlet connected to the return channel, and a circulator to impart a circular movement to the fluid in the circulation channel.

Abstract: A separator provides improvements for better separation of an effluent into constituent parts and greater ease of use. A tapered basket provides improved flow and better filtration. A baffle directs effluent into the basket with greater force. An asymmetrical flange prevents mis-orientation the basket and baffle. An improved oil valve provides a locking mechanism to prevent dislodging of the valve during cleaning. An alternative valve uses a sensor to sense an oil/water interface and close the oil valve appropriately. A top seal prevents leakage of effluent at connection points with the lid of the housing. An underground unit allows below floor level installation of the separator. A bidirectional unit can be reversed to provide flow in either direction. A dual purpose tank can be used to store both separated oil and oil from operations for common removal.

Abstract: The filter housing has a filter outlet portion with a central filter outlet passage. The outlet portion includes a terminal end portion defining a filter nozzle. The filter nozzle forms a nozzle passage between the filter nozzle and the pump housing. The nozzle passage communicates with an annular recess formed in the filter outlet portion. The annular recess receives return bypassed hydraulic fluid from a regulator valve for distribution into an inlet stream of fluid flowing through the filter outlet passage. The inlet stream velocity is increased which increases the pressure at the pump inlet. The increased pressure at the pump inlet allows the pump to operate at higher speeds without cavitation.

Abstract: A container for receiving and holding effluent water containing oil/grease to be removed has sectional covers. A main sectional cover supports a partially immersed rotatable disk; a drive on the main sectional cover rotates the disk; a trough on the main sectional cover straddles the disk; and a blade on the trough scrapes a side of the disk, to direct oil and grease from the disk along the scraper blade along the trough for collection in a storage container. Efficiencies of construction of the sectional covers, disk and a sensor probe are disclosed.

Abstract: A low cost oil, grease removal assembly includes a rotomolded plastic container having an inlet and an outlet; a rotomolded plastic basket support located at the inlet inside the container; a rotomolded plastic outlet baffle located in the container at the outlet; a plurality of container cover sections including a first section to cover the basket support, a second container cover section having an oil, grease removal mechanism downstream of the basket support and upstream of the outlet baffle, and a third container cover section to cover the outlet baffle.

Abstract: A fluid filter, which is adapted for separating a less dense fluid floating on a high dense fluid, includes at least a fluid filtering arrangement including a floating wing adapted for floating on the less dense fluid and at least a fluid outlet formed on the floating wing, and a container body, which is extended from the floating wing, having a fluid collecting cavity communicating with the fluid outlet, wherein the fluid outlet is formed at a position above the fluid collecting cavity. Therefore, when a downward force is applied on the floating wing until the fluid outlet is slightly positioned below the surface level of the less dense fluid, the less dense fluid is allowed to flow into the fluid collecting cavity through the fluid outlet by gravity.

Abstract: A liquid/solid separator system mounted on a mobile cart and connected to a process tank for reducing the rate at which fluids are consumed in manufacturing processes. The system may include automation and also may include a shear stepped screen including tilted wire wedge wires arranged at varying cant angles. The system may include a fine screen basket received in a settling box.

Abstract: A low cost oil, grease removal assembly includes a rotomolded plastic container having an inlet and an outlet; a rotomolded plastic basket support located at the inlet inside the container; a rotomolded plastic outlet baffle located in the container at the outlet; a plurality of container cover sections including a first section to cover the basket support, a second container cover section having an oil, grease removal mechanism downstream of the basket support and upstream of the outlet baffle, and a third container cover section to cover the outlet baffle.

Abstract: A filter for filtering a fluid, such as lubricating oil for an engine, has a first element for trapping small particles and a second filter element for trapping sludge, the second filter element being stacked on the first filter element. A flow-deflecting element is disposed between the first filter element and second filter element to provide a spinning motion to oil flowing from the second filter element as that oil joins oil which is passed through the first filter element. The spinning motion of the oil from the bypass filter element encourages mixing of the oil from the second filter element with the oil filtered by the first element. A centrifugal separator is disposed in an annular space between the filter elements and filter housing for imparting a rotary motion to the fluid prior to the fluid passing through the filter elements. This removes large particles from the fluid by centrifugal force so that large particles do not add to the contaminant load in the filter elements.

Abstract: A catch basin is provided for insertion into a pre-existing storm drain connected to a storm drain system, the storm drain having a shoulder around its upper periphery for supporting a pre-existing, perforated storm drain cover. The catch basin selectively controls the flow of liquids and viscous materials into the storm drain system, and includes a flexible, fluid impermeable container extendable into the storm drain with its edges extendable over the storm drain shoulder about the periphery thereof. The flexible, fluid impermeable container includes a drain hole providing an outlet to the storm drain system. A rigid valve member is attached to the flexible, fluid impermeable container and is configured to selectively open and close the drain hole. The rigid valve member includes a vertically extending wall surrounding the drain hole and extending upward therefrom a distance h to define an opening.

Abstract: A filter device may include a filter housing and a filter element defining a longitudinal axis disposed in the filter housing. The filter element may be configured to be penetrated by a fluid flow in a radial direction from a raw end to a pure end of the filter element. A water separator may be disposed at the pure end of the filter element and arranged axially spaced from the same. The water separator may have a hydrophobic and annular diaphragm extending in an axial direction of the filter element configured to be penetrated by the fluid flow from a raw end of the water separator in a radially outward to a radially inward direction with respect to the longitudinal axis to separate water from the fluid flow.

Abstract: A filter device may include a filter housing and a filter element defining a longitudinal axis disposed in the filter housing. The filter element may be configured to be penetrated by a fluid flow in a radial direction from a raw end to a pure end of the filter element. A water separator may be disposed at the pure end of the filter element and arranged axially spaced from the same. The water separator may have a hydrophobic and annular diaphragm extending in an axial direction of the filter element configured to be penetrated by the fluid flow from a raw end of the water separator in a radially outward to a radially inward direction with respect to the longitudinal axis to separate water from the fluid flow.