Filter assembly with modulating bypass valve

Details Filter assembly with modulating bypass valve Filter assembly with modulating bypass valve

B - Operations, Transporting

01

D

182/83

B01D 27/10 (2006.01) B01D 29/11 (2006.01) B01D 35/06 (2006.01) B01D 35/147 (2006.01)

Patent

CA 1063524

FILTER ASSEMBLY WITH MODULATING BYPASS VALVE A B S T R A C T A filter assembly comprises a housing having a tubular filter and a bypass valve mounted therein. The valve comprises a spool having pressure modulating means thereon in the form of a tubular extension having a plurality of metering orifices formed therethrough. In normal operation, fluid is communicated from an inlet of the housing, through the filter and to an outlet. When the inlet pressure of the fluid exceeds a predetermined level due to clogging of the filter, for example, the fluid is communicated from the inlet to the outlet directly, through the metering orifices of the valve. The spool has a cylindrical portion which forms a sliding seal with a cylindrical bore defined in the housing to prevent premature opening of the bypass valve.

250663

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