A drop-in filter element assembly with axial staged treatment includes a proximal endcap configured to be positioned within a filter housing adjacent the inlet flow through the filter element, first filter media extending from the proximal endcap and configured to treat the fluid flowing there through, an intermediate endcap unit coupled to the first filter media and spaced from the proximal endcap, second filter media extending from the intermediate endcap unit and configured to treat the fluid flowing there through, wherein the second filter media is a distinct type of media from the first filter media, and a distal endcap configured to be positioned within the filter housing adjacent the outlet flow through the filter element and coupled to the second filter media and spaced from the intermediate endcap unit, wherein the first and second filter media provide axially staged treatment to the fluid.

A water separator element (14) for a fuel filter (10) having two water level electrodes (34, 36) for detecting backed-up water in a water collection chamber (32) of the fuel filter (10). The water level electrodes (34, 36) can be electrically contacted by means of two contact electrodes (40, 42), said contact electrodes (40, 42) being connected in an electrically conductive manner to the water level electrodes (34, 36). The disclosure further relates to a fuel filter comprising a water separator element of this type.

A filter cartridge having a bypass filtration media is described. The filter cartridge includes main filtration media. In some arrangements, the main filtration media includes first filtration media and second filtration media that has a different filtering efficiency than the first filtration media. The filter cartridge is configured to be installed in a filtration system having a bypass mode. While in the bypass mode, fluid passing through the filtration system is allowed to bypass the main filtration media. To avoid unfiltered fluid from passing from the inlet of filtration system to the outlet (e.g., and on to an internal combustion engine), the fluid flows through the bypass filtration media (e.g., during cold start conditions). In some arrangements, the bypass filtration media has a lower filtering efficiency than the main filtration media.

A filter element is provided with a support frame provided with a first end disk section and a second end disk section. A folded filter medium is connected to the support frame and arranged between the first end disk section and the second end disk section of the support frame. The first end disk section or the second end disk section has a face facing away from the filter medium. The support frame is provided with a fluid guiding channel that guides, when a fluid flow passes through the filter medium, the fluid along the face facing away from the filter medium. A filter assembly with such a filter element and a filter receptacle in which the filter element is exchangeably arranged is provided.

A filter element is provided with a folded bellows that has a first pleated section with parallel arranged first pleats and a second pleated section with parallel arranged second pleats. The first pleats of the first pleated section are positioned at an angle relative to the second pleats of the second pleated section. The end face edges of the first pleats of the first pleated section adjoin a first clean chamber. The end face edges of the second pleats of the second pleated section adjoin a second clean chamber. The second clean chamber is delimited by a longitudinal side of an edge-side pleat of the first pleated section. The first and second clean chambers are connected to each other. A filter insert with such a filter element is provided.

A filter element includes at least first and second opposing pleated media sections and at least first and second support structures supporting, absent an inner liner, the at least first and second media sections and being layered between the at least first and second media sections. In another embodiment, the filter element includes a continuous construction of pleated media forming the first and second opposing pleated media sections, in which the pleats have portions of differing lengths, and a support structure within the interior volume supporting the first and second media sections. The filter element can be in the form of two racetracks, a V-pack, or two V-packs. The racetracks can be polygon shaped.

A fuel filter insert for a fuel filter is provided with a prefilter element and a main filter element which are arranged one atop the other in an axial direction relative to a longitudinal axis of the fuel filter insert. The main filter element has a water separating unit configured to separate water contained in a fuel to be filtered. The water separating unit has a water discharge channel for water separated from the fuel, wherein the water discharge channel is extending in the axial direction at least partially through the prefilter element. A fuel filter with such a fuel filter insert has a filter housing accommodating the fuel filter insert and the water discharge channel of the fuel filter insert is fluidically connected with a water collecting chamber of the filter housing.

A filter section includes a filter having a cylindrical shape formed from a pleated plate; an attachment section having a cylindrical shape provided on a side surface of the tank, the attachment section with one end of the filtration section; a plate covering an end of the filtration section on a side not provided with the attachment section; and a baffle plate provided adjacent to the filtration section. The filtration section is provided along a horizontal direction, and the filtration section and the plate are provided inside the tank. The baffle plate includes at least one of a first baffle plate provided inside the pleated filter and a second baffle plate provided outside the pleated filter. The first baffle plate is disposed at least above a central axis of the filtration section, and the second baffle plate is disposed at least below the central axis.

The disclosure pertains to a spin-on fluid treatment device, including a treatment medium disposed within a housing, a top surface having an internally threaded bore and an outlet tube at least partially disposed inside said threaded bore in a concentric position. The outlet tube can have an externally oriented sealing portion for engaging with a complementary element of an inlet spud of an entity that receives said treated fluids. The outlet tube can be configured as an alignment feature to guide the treatment device onto the inlet spud during installation. The outlet tube can be configured with both an externally oriented sealing portion and an alignment feature. The disclosure also pertains to a system comprising a machine having a treatment device head and a spin-on fluid treatment device, a kit, a spin-on fluid filter cartridge, and a method of mounting a spin-on filter cartridge onto a filter head.

An upper endcap of a fuel filter cartridge includes a skirt, an axially extending pin surrounded by the skirt, and a plurality of ribs that define fluid flow channels leading to the pin. The pin is extendable through an axially facing fuel inlet opening at the upper end of a standpipe for actuating a valve to an open position allowing fuel to flow through the axially facing inlet opening and into the standpipe. The valve can include a hole that receives the pin therein to help stabilize the valve when the valve is actuated open.