A filter medium, filtration device, and methods for the same are described. The filter medium may include a base impregnated with a cured epoxy resin. The cured epoxy resin may be the reaction product of, or formed by, the reaction of an epoxy resin and a curing agent. The epoxy resin may include a diglycidyl ether. The diglycidyl ether may be the reaction product of or formed by the reaction of a diol and an epihalohydrin. The epihalohydrin may be derived from one or more renewable sources. The method may include impregnating a base filter medium with an impregnation composition including one or more of an epoxy resin, a curing agent, a solvent, or a combination thereof. The method may also include reacting the epoxy resin with the curing agent to form a cured epoxy resin.

Filter assemblies are described which may be rolled for use and unrolled for cleaning. Rolling an assembly may form a spiral path for fluid to flow. Fluid also may flow through mesh panels of the assembly unless such panels are obstructed, as by debris.

A filter has a filter center tube that includes a plurality of layers of solidified material including a first layer with a first undulating strip of solidified material extending in a first predetermined direction, and a second layer with a second undulating strip of solidified material extending in a second predetermined direction. The first layer is in contact with the second layer and the first predetermined direction is not parallel with the second predetermined direction, forming a plurality of pores therebetween.

Filtration units for cooling elements include a fluid-permeable filter element with corrugations, a fluid chamber with an opening to receive a channel arrangement of the cooling element, and one or more flow distribution elements configured to direct fluid from an inlet to the fluid chamber, across the corrugations, and through the channel arrangement to an outlet of the fluid chamber.

The current technology relates to various filter elements configurations where a substrate layer defines a surface having a treatment. The treatment increases a roll off angle of the surface for a 50 water droplet when the surface is immersed in toluene. The filter element can have a housing and the substrate disposed in the housing. In some embodiments the substrate layer defines a plurality of pleats extending between pleat folds that form flow faces of the media. In some embodiments the substrate is incorporated into single facer media of a filter element. In some embodiments the substrate layer is incorporated in a filter element having a flow-by configuration. In some embodiments the substrate layer is incorporated in a filter element having a cross-flow configuration. Some embodiments relate to a vent. Some embodiments relate to a barrier assembly and/or a fuel filter element. Various other filter elements are described.

Disclosed is an increased flow screen panel that has pathways or ridges, which debris can flow up against and be rejected by the screen panel, and flow can still pass around debris and into the orifices.