Donaldson Comapny, Inc.

Mark C Shepherd

Kurt Joscher

Andrew J Dallas

Bradly G Hauser

Davis B Moravec

Mike J Madsen

Joseph M Block

Cullen E Hall

Patricia L Palmby

Matthew A Musich

Jeremy R Reem

Brent T Harrold

Michael S Courneya

Kurt B Joscher

A filter cartridge includes a tubular core movably oriented within an inner liner and having a projection having a flow passageway. The core is free-floating and movable between a first position, in which the core can move along a longitudinal axis of the core, and a sealed position, in which the core is sealed to an inner liner of the cartridge. In the sealed position, the flow passage through the projection can provide an air flow passage of air within an inner cavity to outside of the filter cartridge. Other arrangements include a filter cartridge with a free-floating core, which forms a fuel bypass between the core and a standpipe.

Filter cartridge, filter assembly, and methods

A valve arrangement includes a valve shaft having a fluid flow bore, and valve gear projections or teeth projecting from the valve shaft, constructed and arranged to receive a force to rotate the valve shaft. The valve arrangement can be used in a filter assembly having cartridge projections such as gear teeth to mesh with the teeth on the valve gear.

Valve arrangement, liquid filters, filter assemblies, and method

A filter cartridge has media construction, a housing, and a first end construction. The first end constructions includes an outer radial wall with circumferentially spaced connecting sections; each connecting section having a plurality of helical profiles extending at a helix angle. The filter cartridge is removably attached to a filter head, which has mating connecting segments. A bowl cartridge assembly is also provided including connecting sections with a plurality of helical profiles.

Filter arrangements for liquids and methods of use

A hydrocarbon-in-water purification system includes a high capacity hydrocarbon absorber stage having a high capacity hydrocarbon absorber material and an inlet configured to receive a hydrocarbon-in-water dispersion from a fuel system. A polishing hydrocarbon absorber stage is in liquid communication and downstream of the high capacity hydrocarbon absorber stage including polishing activated carbon. The high capacity hydrocarbon absorber material has a greater saturation capacity than the polishing activated carbon and the polishing activated carbon has a greater polishing capacity than the high capacity hydrocarbon absorber material. A method for controlling and managing the evacuation of water from the hydrocarbon-in-water purification system includes tracking the purification state of water volumes and the bed loading states of purification beds defined in the water filter.

Hydrocarbon-in-water purification system

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Minneapolis, MN, United States of America

Mark C Shepherd