Patent ID: 8192623
Filing Date: 2012-06-05
Classification: B01D

Abstract:
1. A replaceable filter element, comprising: a filter casing defining an inner radial surface; a filter body disposed within the casing, the filter body having an axial, dirty side surface and an axial, clean side surface, wherein the filter body includes fluted filter media having one or more flutes that extend from the dirty side surface to the clean side surface; and a pre-filter including an axial, dirty side surface and an axial, clean side surface, the pre-filter arranged within the casing so that the clean side surface of the pre-filter is proximate the dirty side surface of the filter body, wherein the filter body and the pre-filter are fixably retained by the inner radial surface of the casing, and wherein the pre-filter defines a perimeter and includes a flange that depends axially away from an axial surface of the pre-filter from at least a portion of the perimeter of the pre-filter, and further wherein at least a portion of the flange is provided intermediate the inner radial surface of the filter casing and a side of the filter body.