A valve-sensor assembly for a filter assembly that filters water from a fluid. The valve-sensor assembly includes a sensor body and a drain valve body. The sensor body includes a filter element engagement portion having a hollow interior that extends longitudinally through a length of the sensor body and a protrusion that extends circumferentially along an exterior surface of the filter element engagement portion. The sensor body further includes one or more water-in-fluid sensors provided at the exterior surface of the filter element engagement portion. The drain valve body includes a main body having a drain port, and a valve extending from the main body and extending at least partially within the hollow interior. The valve has an interior passage in fluid communication with the drain port.

An oil-water separation system for separating water from the oil of a vacuum pump used in maple sap extraction and returning filtered oil to the vacuum pump, includes a vacuum pump having an oil inlet port and an oil outlet port, an oil-water separator for separating water from oil having an inlet for receiving a waste water-oil mixture from the vacuum pump oil outlet port, a first outlet for returning filtered oil to the oil inlet port of the vacuum pump and a second outlet for removing water from the system.

A replacement filter element having a removable pin attached to the filter elements 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 system comprising a drain for a fuel-water separator (FWS) assembly and a sensor is disclosed. The sensor may include a sensing element that is attached to the drain, wherein, when the drain engages the FWS assembly, a cavity is formed by an endcap at least partially within the FWS assembly and by at least one of the drain or the sensor, wherein the sensing element is exposed within the cavity, wherein a first side of the cavity is at least partially open, and wherein a second side of the cavity is formed by at least one of the drain or the sensor, wherein the cavity is configured to receive fluid through the first side and collect the fluid in the cavity to trigger the sensing element. Numerous other aspects and systems are disclosed.

A filter system including a designated filter cartridge having a geometric projection, a flow restriction valve that controls fluid flow out of the filter system, and a priming pump configured to prime the filter. The flow restriction valve includes an opening keyed to the geometric projection such that the geometric projection engages the opening and actuates the flow restriction valve. The flow restriction valve includes at least one fluid flow check valve configured to allow the priming pump to prime the filter system.

A method for retrofitting an operating fuel delivery system of a vehicle. The method includes obtaining a vehicle having an operating fuel delivery system, which includes an interconnected fuel tank, a fuel pump and an engine. Obtaining an air separator configured to be attached to the fuel delivery system at a connection point wherein the fuel pump and the engine are in direct fluidic communication and also obtaining attachment means for connecting the air separator to the fuel delivery system by fluidically mounting the air separator at the connection point wherein the fuel pump and the engine are secured in direct fluidic communication.

A fuel water separator filter having a filter that separates water from a fuel and an adapter having a first end connected to an end of the filter. A second end of the adapter can detachably connect the filter to a plurality of bowls having different sizes. The adapter may detachably connect to the end of the filter or may be permanently connected to the end of the filter. The filter may be a spin-on filter. The adapter may include a first connecting portion that connects to the filter and a second connecting portion that connects to the bowl. The adapter may further include a basin having a plurality of bypass passages that allows the separated water to flow from the filter to the bowl.

An electronic system providing unique identification of a genuine filter system assembly to the engine control unit (ECU). A resistor is made to be an integrated part of the filtration system hardware such that when connected through a wired connection, the ECU detects a particular voltage signal and identifies the system as a genuine filter. The resistor could be integrated in any part of the filter system such that it could be used to recognize the filter or the cartridge. The resistor connection could be made via male/female pins, conducting wires, plates, conductive plastic material or other mechanisms.

Various example embodiments relate to an automatic drain system for use with a fluid water separator. The automatic drain system includes a liquid-in-fuel sensor. The liquid in-fuel sensor is configured to detect a liquid level in a water sump. The solenoid has an open state and a closed state. A control unit is configured to activate the solenoid in response to a signal from the liquid-in-fuel sensor. Activation of the solenoid causes the solenoid to go from the closed state to the open state. The automatic drain system is placed in a condition for allowing fluid flow through the automatic drain system from the water sump.

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.