Importance

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Abstract

A fuel filter cartridge includes an upper enclosure and a lower enclosure. The upper enclosure includes an upper section having a cavity for receiving a fuel flow, and a lower section joined to the upper section. A primary filter element is disposed within the lower section. The primary filter element and the lower section define a primary inlet plenum in fluid communication with the upper section cavity and a primary outlet plenum. A secondary filter element is disposed within the lower enclosure. The secondary filter element and the lower enclosure define a secondary inlet plenum in fluid communication with the primary outlet plenum and a secondary outlet plenum for discharging the fuel flow from the filter cartridge. The lower enclosure defines first and second passages in fluid communications with the primary and secondary inlet plenums, respectively, and includes a drain-cock movable between open and closed positions to open or close the first and second passages.

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First Claim