Abstract: A dual flow filter unit for the filtration of a pressurized liquid such as oil, comprising a closed housing (10) having an inlet (31), and main and secondary outlets (32, 13) for that liquid. The unit further comprises a main filter element (21) arranged in the housing (10) and having an unfiltered fluid surface exposed to the majority of the liquid flow, the flow through the main filter (21) being directed to the main outlet (32) from the housing (10); and a secondary filter element (17) exposed to a portion of the liquid flow supplied to the housing inlet (31), any flow through the secondary filter being directed to the secondary outlet (13) from the housing. The main filter element (21) offers a low resistance to the flow of fluid therethrough relative to the secondary filter element (17) so that the majority of the flow through the inlet (31) is filtered by the main filter element (21) and the remainder by the secondary filter element (17).

Abstract: A dual flow filter unit for the filtration of a pressurized liquid such as oil, comprising a closed housing (10) having an inlet (31), and main and secondary outlets (32, 13) for that liquid. The unit further comprises a main filter element (21) arranged in the housing (10) and having an unfiltered fluid surface exposed to the majority of the liquid flow, the flow through the main filter (21) being directed to the main outlet (32) from the housing (10); and a secondary filter element (17) exposed to a portion of the liquid flow supplied to the housing inlet (31), any flow through the secondary filter being directed to the secondary outlet (13) from the housing. The main filter element (21) offers a low resistance to the flow of fluid therethrough relative to the secondary filter element (17) so that the majority of the flow through the inlet (31) is filtered by the main filter element (21) and the remainder by the secondary filter element (17).