A filter assembly may include a canister and a filter element received in the canister. The filter element may include filter media configured to promote separation of a first fluid from a second fluid having different characteristics than the first fluid as fluid passes through the filter media. The filter element may further include a first end cap, a second end cap, and a tubular member extending between the first and second end caps. The filter assembly may further include a flow cap associated with the first end cap of the filter element. The flow cap may include an inlet portion configured to provide flow communication between an inlet port of a filter base and the tubular member of the filter element, and an outlet portion configured to provide flow communication between an outlet port of the filter base and an exterior portion of the filter element.

A fuel-water separator includes a cartridge assembly and a bowl. The cartridge assembly receives a fuel-water mixture and provides a fuel. The cartridge assembly includes an endplate. The bowl is configured to store water separated from the fuel-water mixture. The bowl is coupled to the endplate. The endplate includes an air vent that receives air from the bowl. The air vent establishes a pressure equilibrium within the bowl and the cartridge assembly.

A marine propulsion system includes an internal combustion engine; a fuel reservoir; a pump that pumps fuel from the fuel reservoir to the internal combustion engine; and a fuel filter that filters the fuel. The fuel filter includes a canister and a fuel inlet that conveys the fuel adjacent to cylindrical sidewalls of the canister so that the fuel immediately spirally flows around and down the cylindrical sidewalls under centrifugal force and under force of gravity, and then is drawn radially inwardly through a filter element by the pump. A fuel outlet extends at least partially along a center axis of the canister and discharges the fuel from the canister. A drain is located at the bottom of the canister and configured to drain water that separates from the fuel as the fuel flows around and down the cylindrical sidewalls.

A filter device may include a filter housing and a ring filter element arranged upright in the filter housing in an installed state. The ring filter element may include an upper end disc, a lower end disc, and at least two projecting pins, each of which in the installed state may engage in an associated draining passage. One of the connecting pins may be arranged offset relative to another of the connecting pins by at least 120 in a circumferential direction of the ring filter element.

A replacement filter element having a removable pin attached to the filter element is described. The removable pin is attached to the filter element via a first interference fit. When the replacement filter element is installed into a filtration system having a drain valve with an internal draft, the removable pin seals onto the drain valve and forms a second interference fit between the drain valve and the pin. The pin seals an opening in the drain valve. The second interference fit is stronger than the first interference. Accordingly, when the replacement filter element is removed from the filter housing (e.g., during a service event of the replacement filter element), the pin detaches from the replacement filter element and remains positioned within the drain valve thereby preventing fluid from leaking from the housing when the filter element is removed. The pin permanently plugs the drain valve once installed.

A center tube for use with a filter element includes 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 rectangular shape.

Fluid filtration systems and methods for servicing thereof are disclosed. The fluid filtration system includes a filter cartridge, a fluid transfer pump, and a valve assembly that can be selectively operated and positioned to achieve a normal filtration mode of operation, a fuel drain mode of operation, and a water drain mode of operation. In the normal mode, the filter cartridge is in an installed position, the pump is rotated in a first direction, and the valve is placed in a first position. In the fuel drain mode, the filter cartridge is in a service position, the pump is rotated in a second direction, and the valve is placed in a second position. In the water drain mode, the filter cartridge is in an installed position, the pump is rotated in the second direction, and the valve is placed in the first position.

An adapter is provided for fluidly coupling a hose to a housing of a filter assembly having a drain body connected to the housing. The adapter has a retaining cap that is disposed about a central axis and is configured to couple with the drain body. A hose barb body is disposed rotatably about the central axis. The hose barb body has a tapered portion that is configured to receive at least a portion of the drain body therein, and a cylindrical portion that extends from the tapered portion. The cylindrical portion is configured to allow selective coupling of a hose thereon. A retaining collar is disposed about the central axis and has a shoulder that is configured to bear the hose barb body thereon. Multiple resilient tabs upstanding from the shoulder have ends laterally extending away from the central axis for engaging with the retaining cap.

A fluid drain off system for a fuel filter, the system comprising a float, movable together with a trigger device for a switch, such as a magnet, in response to the level of fluid contaminant, a switch arranged to be selectively triggered by the trigger device upon the fluid contaminant reaching a predetermined level, and a fluid passage configured to be selectively opened in response to the triggering of the switch to allow fluid contaminants to be drained from the filter.

A filter element for liquid filtration has a hollow-cylindrical filter medium body and an end disk covering an end face of the filter medium body. A central cutout axially penetrates the end disk. An outflow channel for liquid to be filtered or filtered liquid is arranged at the end disk and connects to a liquid collecting space. The outflow channel extends from a radially outward wall surface of the filter medium body to the central cutout of the end disk. The outflow channel is controlled by a drainage device. A filter device with a filter housing provided with such a filter element has a drainage device that controls the outflow channel. A filter device with a drainage device having a first drainage position for draining only water and a second drainage position draining water from a water collecting space and liquid from a liquid collecting space is provided.