Fluid handling – Systems – Supply and exhaust
Patent
1984-07-25
1987-02-03
Michalsky, Gerald A.
Fluid handling
Systems
Supply and exhaust
1375961, 137864, 137869, F16K 1114
Patent
active
046403086
ABSTRACT:
For application in controlling fuel flow to a gas turbine engine, the control valve includes one or more fuel inlet manifolds, a fuel outlet manifold and a fuel drain manifold in fuel flow relation with a longitudinal bore in a valve sleeve. A hollow spool valve is slidably disposed in the sleeve bore and includes a metering valve thereon movable past a fuel inlet aperture to meter fuel flow from the fuel inlet manifold to the fuel outlet manifold. The spool valve also includes a shut-off valve thereon for terminating fuel flow to the fuel outlet manifold under certain conditions. The hollow spool valve includes a longitudinal bore in fuel flow relation with the fuel outlet manifold and fuel drain manifold and a drain valve in the spool bore openable when fuel flow to the fuel outlet manifold is interrupted by the shut-off valve so that fuel can drain from the fuel outlet manifold to the drain manifold and closeable during metered fuel flow to the fluid outlet manifold. The drain valve preferably includes a drain valve assembly in the spool bore movable with the spool valve and an unseating member in the spool bore in fixed position engageable with the valve member of the drain valve assembly to unseat same when the shut-off valve is closed by sliding movement of the spool valve.
REFERENCES:
patent: 2184413 (1939-12-01), Della Chiesa et al.
patent: 3198479 (1965-08-01), Greenwood
patent: 4526197 (1985-07-01), Martin et al.
patent: 4530487 (1985-07-01), Tew et al.
Ex-Cell-O Corporation
Michalsky Gerald A.
Timmer Edward J.
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