FILTER CENTRAL TUBE WITH STRAIGHT TUBE AND FLOW LINES

摘要

A central tube (222, 322) for use with a filter element (206) comprises a one-piece body (274, 374) having a standpipe (246) defining a length (L246) along the longitudinal axis and a central flow passage (250) and a plurality of radially extending flow guide fins (254, 354) secured to the standpipe (246), the flow guide fins (254, 354) being axially spaced along the standpipe (246), toward radial flow channels (256) wherein each of the ribs (254, 354) further defines a first gap (260, 360) between the rib (254, 354) and the standpipe (246), the gaps (260, 360) together defining a first outer axial flow passage (248, 348) define and the standpipe (246) defines a rectangular shape.