Method and apparatus for controlling flow of liquid in gravity f

Details Method and apparatus for controlling flow of liquid in gravity f Method and apparatus for controlling flow of liquid in gravity f

1977-12-05

1980-02-26

Schwadron, Martin P.

Fluid handling

Processes

Cleaning, repairing, or assembling

137433, 137398, F17D 300, F16K 3122

Patent

active

041900707

ABSTRACT:
Method and apparatus for automatically controlled conducting of liquid downward through a gravity-flow subatmospheric-pressure shaft over a wide range of flow rates by use of a movable float-operated inlet valve with variable upward force being applied to the movable valve assembly to compensate for the variable downward forces resulting from the development of a partial vacuum in the flow shaft.

REFERENCES:
patent: 932375 (1909-08-01), Davis
patent: 2844254 (1958-07-01), Ansley
patent: 2920641 (1960-01-01), Girolo
patent: 3080879 (1963-03-01), Danel
patent: 3522013 (1970-07-01), Borgeson
patent: 3760837 (1973-09-01), Amren
patent: 3939066 (1976-02-01), Bauer
patent: 4083661 (1978-04-01), McPherson et al.
St. Anthony Falls Laboratory, "Conduits and Associated Cavitation", University of Minnesota, for Environmental Protection Agency, Jun. 1971.
Bauer Engineering, Inc., "Final Report Drop Shaft Investigation for Crosstown Expressway (I-494)", Oct. 1971.

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