Self-venting valve end cap and method

Details Self-venting valve end cap and method Self-venting valve end cap and method

2005-12-06

2005-12-06

Drodge, Joseph (Department: 1723)

Liquid purification or separation

Diverse distinct separators

Including a filter

C210S436000, C210S450000, C210S454000, C055S355000, C123S1960AB

Reexamination Certificate

active

06972092

ABSTRACT:
A one-piece, molded plastic end cap (1) is designed for installation in a diesel engine fuel filter. The end cap (1) comprises a disk-shaped filter support component (2), with a top portion adhesively connected to the fuel filter center tube (8) and filter media (9), and a bottom portion which includes a downward-facing, slotted, cylindrical nipple (3). The distal end of the nipple (3) protrudes slightly from the bottom of the fuel filter housing (7), and is threaded to accept a drain plug/self-venting valve (10). The self-venting valve (10) is designed such that, the internal fuel filter vacuum is broken through a capillary-type action, and air subsequently enters the filter, and contaminants (primarily water) are able to drain freely.

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patent: 5833852 (1998-11-01), Yoon
patent: 5879543 (1999-03-01), Amini
patent: 6171491 (2001-01-01), Popoff et al.

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