Patent ID: 9649584
Date: 2017-05-16
CPC Classifications: B01D

Claim:
1. A multiple stage filter element assembly, comprising: a first filter element comprising a first tube of filter media surrounding a longitudinal axis; a second filter element comprising a second tube of filter media surrounding the longitudinal axis when assembled with the first filter element, the first filter element adapted to axially abut the second filter element with an internal flow passage therebetween; a first seal element for the first filter element; a second seal element for the second filter element, the first and second seal elements being adjacent each other and proximate an interface between the first and second filter elements when in abutting relation; a first end cap enclosing a first end of the first filter element, the first end cap having a first locating post; a second end cap enclosing a first end of the second filter element, the second end cap having a second locating post on an opposite side of the assembly as compared with the first locating post; and wherein the first filter element and the second filter element are permanently connected together.