Liquid purification or separation – Flow – fluid pressure or material level – responsive – Fluid pressure responsive by-pass
Patent
1997-07-03
1999-03-23
Savage, Matthew O.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Fluid pressure responsive by-pass
210314, 210440, 210450, B01D 35147
Patent
active
058854479
ABSTRACT:
A filter arrangement for filtering fluid comprises a housing having an inlet and an outlet, a first cylindrical construction, a second cylindrical construction, and a bypass arrangement. The first construction includes filter media mounted within the housing. The first construction defines a first open filter interior. The first open filter interior includes a first dimension being a largest dimension across a cross-section of the first open filter interior. The second construction includes a filtration construction mounted within the housing. The second construction defines a second open filter interior. The second open filter interior includes a second dimension being a largest dimension across a cross-section of the second open filter interior. The second dimension is at least as large as the first dimension. The bypass arrangement has an open position and a closed position. In the open position, the bypass arrangement is constructed and arranged to permit fluid flow from the housing inlet through the second filtration construction; in the closed position, the bypass arrangement is constructed and arranged to disallow fluid flow from the housing inlet and through the second filtration construction.
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Legault Kathryn A.
Theisen Jeffrey J.
Donaldson & Company, Inc.
Savage Matthew O.
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