Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve
Patent
1997-04-09
1998-11-24
Walton, George L.
Fluid handling
Liquid level responsive or maintaining systems
By float controlled valve
137430, 137432, 137445, 137448, 141 59, 141198, F16K 3126, F16K 3300
Patent
active
058394656
ABSTRACT:
An above-ground tank auto-limiter is provided for preventing the overflow of fluid in storage tanks. The auto-limiter includes a valve assembly insertible downward through the top of a fill pipe of the fuel storage tank. The valve assembly has a cylindrical valve housing providing a fluid flow passage directing fuel downward into the storage tank under pressure. A hollow cylindrical float is provided in the valve assembly and is coaxially mounted along the outside surface of the valve housing leading into the storage tank. The float moves vertically to slide freely along the lower portion of the valve housing with the fluctuation of the fuel level within the tank. A series of linkage assemblies communicate the cylindrical float to valve doors. The valve doors prevent any fluid flow from passing through the fluid flow passageway when the doors are in the closed position. Bleed valves disposed in the valve assembly above the valve doors function independently from the linkage assemblies and valve doors to allow a certain amount of excess fuel that is captured within the valve housing when the fluid flow passageway is closed to bleed into the storage tank when pressure in the valve assembly is released.
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Biesecker James F.
Phillips Paul
Puffer Rick E.
EBW, Inc.
Walton George L.
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