Patent ID: 8641901
Filing Date: 2014-02-04
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; a pre-filter including an axial, dirty side surface and an axial, clean side surface; and a layer of adhesive connecting a circumferential surface or the axial, clean side surface of the pre-filter to one or more of the axial, dirty side surface of the filter body and the inner radial surface of the filter casing, wherein the pre-filter is 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.