The invention relates to a filter element (10) having a first fluid path (12) on a raw side (60) for filtering a first fluid (64) and a second fluid path (14) having a fluid line (16) on a clean side (62) for carrying a second fluid (66). The filter element (10) is provided at least on one side with a first end plate (20). Here, the fluid line (16) is arranged in the central inner region (36) of the filter element (10) and connected with the end plate (20) for joint disassembly, especially securely connected to the filter element. The invention further relates to a filter system (100) including such a filter element (10).

A fluid filter mountable on a connection flange having a central stand pipe, and having an exchangeable filter insert. The insert has a hollow cylindrical filter material body with two end plates on its end faces and is mountable on the stand pipe. A cup-shaped screw housing of the filter can be screwed to a free end of the stand pipe, and supports a seal on a free edge thereof, via which the screw housing is sealable against a connection flange sealing surface when mounted. The filter has a first arrangement on an end face area to center the end face area to the flange. The filter insert has a second arrangement on the end face area outer periphery for centering the screw housing free edge relative to the connection flange sealing surface, wherein the second arrangement interacts in a centering manner with the screw housing free edge when installed.

The present invention is a system and method for adapting and modifying an existing mono-fuel delivery system for an internal combustion engine to run as a bi-fuel system by reusing and repurposing OEM components of the mono-fuel system. The bi-fuel system makes use of an integration plate that may be mounted to the system fuel filter in substantially the same location as the fuel filter is mounted in the mono-fuel configuration. The integration plate also may deliver either fuel types into the existing engine fuel intake port thus the system does not require the creation of a secondary fuel intake port for the secondary fuel. The integration plate may also be situated such that it minimizes the space it must use within the engine compartment and it may use the preexisting engine mounting points designed for the fuel filter in the mono-fuel system.

An end cap comprises a substantially annular cylindrical body defining a cylindrical axis and including an annular skirt portion defining a free open end along the cylindrical axis and a closed end opposite the free open end along the cylindrical axis, the body defining an interior space, and the annular skirt portion includes an outer circumferential surface including a threaded portion disposed proximate the free open end.

A filter cartridge includes a filter media defining an interior space, and having a first end and a second end, a first end plate connected to the first end, and a second end plate connected to the second end. A pin is connected to the second end plate and extends downwardly into the interior space. The pin defines a flow passage therethrough that communicates the interior space with an outside of the filter cartridge.

The invention relates to a filter device, in particular provided for use with diesel fuels, comprising a filter element (19) that can be exchangeably accommodated in a filter housing, which filter device is characterized in that a fluid pump device (46) having two pump chambers (45, 49) is present as part of the filter device, which pump chambers, by means of a pump piston (51) guided in said chambers in a longitudinally movable manner, are separated from each other in a fluid-tight manner at least in one of the two directions of movement of the pump piston, and that each pump chamber (45, 49) is assigned a valve (39, 63), which opens or closes oppositely to the other valve (39, 63) when the pump device (46) is actuated.

The present application discloses a fuel-water separation filter element capable of exhausting gas, and a filter. The filter element includes a filter element frame, a filter medium, and an exhaust valve assembly. An upper end cover and a lower end cover are arranged at an upper end and a lower end of the filter element frame. The upper end cover is provided with a recess surface along an axial direction of the filter element frame. The exhaust valve assembly includes a valve seat and a valve element. The valve seat and the recess surface form an exhaust cavity communicating with the inside of the filter element. The exhaust valve assembly in the present application can effectively exhaust gas in the filter.

The present application discloses a fuel-water separation filter element capable of exhausting gas, and a filter. The filter element includes a filter element frame, a filter medium, and an exhaust valve assembly. An upper end cover and a lower end cover are arranged at an upper end and a lower end of the filter element frame. The upper end cover is provided with a recess surface along an axial direction of the filter element frame. The exhaust valve assembly includes a valve seat and a valve element. The valve seat and the recess surface form an exhaust cavity communicating with the inside of the filter element. The exhaust valve assembly in the present application can effectively exhaust gas in the filter.

A filter element has a ring of a first filter medium disposed between upper and lower end caps. A center tube extends between the upper and lower end caps radially inwards of the first filter medium. Holes in the center tube, adjacent the upper end cap, allow fluid to pass through the center tube towards a separator tube. The separator tube contains a second filter medium that strips water from the fluid into a fluid reservoir below the lower end cap. A radially offset duct defining a fluid passage extends from below the lower end cap to above the upper end cap.

A fuel filter is provided which comprises a manifold, a connector element, a filter bowl, a filter element, an inlet shutoff valve, an outlet shutoff valve, an inlet port, an inlet passage, an outlet port, an outlet passage and a relief valve in which the connector element is fixed to the manifold, and the filter bowl is reversibly fixed to the connector element. The filter bowl is adapted to reversibly receive the filter element and is so configured that when the filter element is located within the filter bowl and the filter bowl attached to the connection element the filter element divides the space defined by the connector element and filter bowl into an inlet filter chamber and an outlet filter chamber. The inlet port mouths through a surface of the manifold, and the inlet port and inlet filter chamber are in fluid communication via the inlet passage.