Filter elements and filter systems are provided. The filter element allows for a reversed flow of fluid through the filter element when flowing from a first port to a second port of a filter head of the filter system. The filter element includes a standpipe in a central cavity of a tube of filter media that is fluidly connected with an exterior of the tube of filter media by a radial flow conduit and an axial flow tube.

A water drain assembly for draining water from a filter assembly comprises a conduit, a water canister, and a venturi. The conduit fluidly connects a bottom portion of the filter assembly to a bottom portion of the water canister. The venturi comprises a first venturi inlet that allows fluid to flow from the fuel tank and into the venturi, a second venturi inlet that allows fluid to flow from the water canister and into the venturi, and a venturi outlet that allows fluid to flow from the venturi and into the filter assembly. The second venturi may comprise a capillary.

A fluid filter assembly is adapted to filter out contaminants from a fluid supply. The filter assembly includes a housing that is adapted to house a cylindrical filter element. The housing includes a lower housing and an upper housing. A top plate is secured to the upper filter housing. Both the top plate and upper filter housing include seals that are adapted to seal the filter. The filter includes threads formed on an exterior surface of the upper housing to allow the filter to be coupled to a filter mount. Dirty fuel enters the filter through the top plate by use of a plurality of openings formed in the top plate, passes through media of the filter element, and exits through a center opening formed in the top plate.

A phase separation device has a device housing (2) accommodating at least one coalescer element (42). The device housing (2) has an inlet (38) for the supply of an emulsion, which flows through the respective coalescer element (42) for separation into at least two of its constituents, has an outlet (46) for a separated constituent, and has a further outlet (22, 64) for a further separated constituent having a lower density than the one constituent and floating on the separated constituent having a higher density.

A low level water sensor and method of use in, e.g., mitigating acidic corrosion in a fuel storage tank is disclosed.

An automatic drain device is configured for use with a fuel water separator filter system. The automatic drain device includes a solenoid, a water-in-fuel sensor, and a controller configured to operate the automatic drain device by activating the solenoid in response to a signal from the water-in-fuel sensor. The automatic drain device may be utilized with suction side and pressure side fuel water separator filter systems. The automatic drain device operates independently of any user input.

One aspect of the disclosure provides a filter element including a first end cap, a second end cap, a ring of filter media and an annular seal. The first end cap defines a cylindrical collar that circumscribes a first central opening and includes a substantially planar first outer surface that extends radially outward from the cylindrical collar to an outer peripheral edge. The second end cap defines a second central opening substantially coaxial with the first central opening. The ring of filter media is disposed between the first end cap and the second end cap, and circumscribes a central cavity in fluid communication with the first central opening and the second central opening. The annular seal is disposed upon the first outer surface of the first end cap and around the cylindrical collar. The annular seal extends axially way from the first outer surface.

A filter system and filtration process for obtaining a filtered liquid and slurrifying a filter cake and whereby the filter cake is slurrified under such conditions that the solids of the slurrified filter cake maintain a suitable quality for being re-used. The filter system has a housing (1) comprising an aperture (6) for liquid containing solids, and a discharge outlet (5) and is characterized in that the housing (1) of the filter system is comprising a slurrification section (3) and at least one filter element (2) having two sides wherein one side is suitable for building up a filter cake and another sides is suitable for contact with filtered liquid, and the slurrification section is comprising at least one nozzle (4) for steam or gas injection and the discharge outlet (5) is suitable for discharging a slurry.

A filter system and filtration process for obtaining a filtered liquid and slurrifying a filter cake and whereby the filter cake is slurrified under such conditions that the solids of the slurrified filter cake maintain a suitable quality for being re-used. The filter system has a housing (1) comprising an aperture (6) for liquid containing solids, and a discharge outlet (5) and is characterized in that the housing (1) of the filter system is comprising a slurrification section (3) and at least one filter element (2) having two sides wherein one side is suitable for building up a filter cake and another sides is suitable for contact with filtered liquid, and the slurrification section is comprising at least one nozzle (4) for steam or gas injection and the discharge outlet (5) is suitable for discharging a slurry.

A surface cleaning apparatus such as an extractor has a fluid flow path extending from a dirty fluid inlet head to a clean air outlet. The fluid flow path upstream of the separation stage comprises a removable portion.