A filter device is disclosed. The filter device includes a coalesce and a final separator arranged one after another in a flow direction. The final separator includes final separator material and is arranged radially within the coalesce. The coalesce is configured hollow-cylindrical and includes a coalescer material and an external support structure with an upper coalescer ring and a lower coalescer ring that are connected with one another via axial coalescer ribs. A positioning element is provided on the final separator. A positioning opening is provided in a region of the at least one lower coalescer ring. The positioning opening is configured in a complementary manner to the positioning element and the final separator engages into the positioning opening in a mounted state with the positioning element and thereby aligns the final separator relative to the coalesce.

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.

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.

A Filter for the removal of water from oil, the filter includes a distillation element having an inlet pipe that in one end is to be fluidly connectable to a reservoir of oil to be filtered, and in the other end being fluidly connected to a distillation head, said distillation head including a plurality of compressing tubes for injecting under pressure said oil into an evaporation chamber, whereby eventual water within the oil droplet evaporates from said decompressed oil, the filter further including a tubular core with a plurality of apertures and a hollow interior, said core having an open end for fluid communication with the hollow interior, a length of yarn wound around an outer surface of the core, wherein the filter further includes a device for blowing air or an inert gas into the evaporation chamber for removal of the water vapor during use of the filter. A method of manufacturing such a filter, as well as a method of removing water of is also disclosed. The water removal unit is part of a modular system, which makes the whole filter unit scalable within fixed steps. When water removing block with attached start block and end block, are stacked upon each other, and connected to filter unit, it becomes scalable complete cleaning equipment. Pump and motor must be adapted to each configuration.

A center tube for use with a filter element comprises a unitary body having a standpipe that defines a length along the longitudinal axis and a central flow passage and a plurality of radially extending flow fins attached to the standpipe, the flow fins spaced axially from one another along the standpipe to define radial flow channels, wherein each of the fins further defines a first aperture between the fin and the standpipe, the apertures together defining a first outer axial flow passage and the standpipe defines a a rectangular shape.

A filter element, for use filtering liquids such as fuel, includes a first section of filter media, an optional layer of coalescer media, and a section of barrier media. The first section and optional coalescer filter media are held between opposite first and second end caps. The second end cap is integrated with the barrier filter media. The barrier media extends at least part way into an interior of the first section and can be conical in shape.

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.

A filter assembly has a threaded cover that mates with a complementary thread on the filter housing. Rotation of the housing cover in a first direction moves the cover axially away from the housing, and rotation of the housing cover in a second direction opposite the first direction moves the cover axially toward the housing. An intermittent coupling between a filter housing cover and a filter element applies intermittent axial forces to the filter element as the housing cover is rotated in the first direction to separate the filter element from the housing along with the cover. The intermittent coupling includes components on the inside of the filter cover that engage with complementary components on the filter element during each revolution of the cover.

A filter assembly that comprises a housing, an outer filter element, and an inner filter element. The outer filter element is positionable within the housing and comprises an outer filter media. The inner filter element is positionable within the outer filter element and comprises an inner filter media, a media support structure, an inner top endplate, and an inner bottom endplate. The inner top endplate comprising a top rib that extends continuously around a portion of a top surface of the inner top endplate.

The present invention relates to a method for converting a full flow oil and/or fuel filter system into a bypass filter system comprising the use of a retro-fittable bypass filter configured to directly replace the pre-existing full flow filter, without the need for additional hoses or mounts etc. as in existing methods. Also described is a filter device for converting a full flow oil and/or fuel filter system into a bypass filter system comprising: an inlet for allowing fluid into the filter; a plurality of screens for filtering particles from the fluid; a cellulose element for filtering moisture from the fluid; an outlet for allowing fluid out of the filter; and a bypass for fluid to bypass the cellulose element and at least one screen and exit the filter, wherein the bypass filter is configured to directly replace the pre-existing full flow filter.