Fleetguard, Inc.

John Arnett

Paul D Miller

Melvin Douglas McCormick

A drain valve for a fuel filter water separator for an internal combustion engine has a first port mating with the vent opening of the separator, a second port mating with the drain opening of the separator, and a third port. The drain valve is actuatable between a closed position blocking communication of the first port with the third port and blocking communication of the second port with the third port, and an open position providing communication of the first port with the third port and providing communication of the second port with the third port. If the valve is actuated to the open position when the engine is off, collected water and vent air each flow through the third port but in opposite directions. If the drain valve is actuated while the engine is running, pressurized fuel spray from the vent opening and collected water from the drain opening of the separator each flow through the third port in the same direction.

Drain valve for fuel filter water separator

A duplex fluid filter assembly has first and second alternate duty filters. A valve assembly controls fluid flow between respective alternate flow paths. The valve assembly has a stationary valve body having an inner cylindrical wall defining a hollow cylindrical interior extending along an axis, and plural radial ports having inner ends opening into the hollow interior and communicating with an inlet, an outlet, and respectively entrances and exits of respective flow paths. A movable valve member has an outer cylindrical wall defining a cylinder extending along the axis in the hollow cylindrical interior of the valve body, and is rotatable about the axis. The valve member has first and second axially spaced interior passages, and first and second sets of transfer passages extending radially outwardly from respective interior passages. A plurality of valve seal assemblies are provided, one in each of the transfer passages, each valve seal assembly having a seal element with an outer face portion at the outer end of a respective transfer passage and engaging the inner cylindrical wall of the valve body and circumferentially movable across and into and out of radial alignment with the inner end of the respective radial port in the valve body.

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Cookeville, TN, United States of America

John Arnett