Patent ID: 7364653
Filing Date: 2008-04-29
Classification: B01D

Abstract:
1. A filtration system comprising: a plurality of filters, each filter having an unfiltered fluid inlet, an unfiltered fluid outlet, a filtered fluid outlet, and a filtration medium and defining a filter flowpath between the unfiltered fluid inlet and the unfiltered fluid outlet for tangential filtration by the filtration medium of fluid passing through the filter flowpath, wherein the plurality of filters includes a first group of at least one but not all of the plurality of filters and a second group including the filters not in the first group; a first manifold connected to the unfiltered fluid inlet of each of the plurality of filters; a second manifold connected to the unfiltered fluid outlet of each of the plurality of filters; a first continuous flowpath comprising: a second continuous flowpath comprising: a valve arrangement coupled to the first and second continuous flowpaths and selectively operable in a first state to circulate fluid around the first continuous flowpath and in a second state to circulate fluid around the second continuous flowpath and including a bypass to pass fluid from the first and second manifolds and the second filter group into the second continuous flow path in response to fluid flow around the second continuous flow path.