Patent ID: 9604167
Date: 2017-03-28
CPC Classifications: B01D,F02M

Claim:
1. A filter assembly configured to be coupled as a unit to a filter head, the filter assembly including: a housing circumscribing a central axis and having first and second ends and an internal chamber defined therebetween; and a filter element disposed within the internal chamber of the housing, the filter element including: a first stage filter circumscribing the central axis and defining a central cavity; a second stage filter downstream of the first stage filter, the second stage filter circumscribing the central axis and defining a central cavity; and a center tube disposed in the central cavity of the first and second stage filters; and wherein the first and second stage filters each have an outer surface coupled to an inner surface of the housing to fluidly seal the first and second stage filters to the housing, whereby fluid flows from the first end of the housing axially towards the second end into the first stage filter where particulates are filtered from the fluid, from the first stage filter axially into the second stage filter where water is coalesced from the fluid, and then from the second stage filter through the center tube towards the first end of the housing.