Abstract: The present disclosure provides a unique fine fiber material that is formed from a fiber-forming polyamide with a fluorochemical urethane additive, a method of making such fiber material, as well as filter media and filter elements including such fibers.

Abstract: The current technology relates to filter media configurations where the filter media has a surface with a treatment that that increases the roll off angle of the surface for a 50 ?L water droplet when the surface is immersed in toluene. Some example filter media has a fluted configuration, and some example filter media has multiple layers. Filter media having multiple layers can be single facer media, for example, where one layer is planar and another layer is fluted.

Abstract: 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.

Abstract: A centrifuge system including a centrifuge housing having a cavity at least partially surrounded by an outer shell, a central shaft extending into at least a portion of the cavity, a rotary motion source for rotating the centrifuge housing, and a filter concentrically positioned about the central shaft. The filter includes a first layer adjacent to a second layer, wherein the first and second layers are wound into a roll about a central longitudinal opening. The first layer may include at least one contaminant retention layer and the second layer may include at least one flow defining layer.