Patent ID: 8932465
Filing Date: 2015-01-13
Classification: B01D

Abstract:
1. A filter cartridge comprising: an outer filter element; and an inner filter element, the outer and inner filter elements each have a respective filtering media, the media of the outer filter element is concentrically arranged around the media of the inner filter element, a first space is defined between the outer and inner filter elements, and a second space is defined within the inner filter element, the outer filter element has a first endplate connected at a first end and a second endplate connected at an opposing second end, the inner filter element has a first endplate connected at a first end and a second endplate connected at an opposing second end, the second endplate of the outer filter element and the second endplate of the inner filter element directly contact each other and define a drain channel, the second endplate of the outer filter element connectable with the second endplate of the inner filter element, the first space between the outer and inner filter elements is in fluid communication with the drain channel allowing fluid to flow therethrough, the inner filter element defines an outlet flow passage, the second space within the inner filter element is in fluid communication with the outlet flow passage, and wherein the second endplate of the outer filter element includes a sealing flange surrounding the drain channel, wherein the second endplate of the outer filter element includes an inner annular flange that includes a barb, and wherein the second endplate of the inner filter element includes legs that engage the barb so as to retain the second endplate of the inner filter element.