Liquid overfill protection system

Details Liquid overfill protection system Liquid overfill protection system

1984-12-21

1986-08-12

Marcus, Stephen

Fluid handling

Liquid level responsive or maintaining systems

With second diverse control

137393, F16K 2118

Patent

active

046050370

ABSTRACT:
A liquid overfill protection system uses an arrangement for delivering a fluid, such as air, to first and second outlets with a pressure difference that is indicative of the extent to which the tank has been filled with liquid. The system includes a control arrangement for closing a valve when the difference in fluid pressure between the first and second outlets exceeds a predetermined level. In this manner, liquid flow into the tank may be blocked when the tank has been filled to a desired extent. In a preferred embodiment, a diaphragm mounted in the valve assembly is used to trigger release of the valve into a closed position when a sufficient pressure differential exists.

REFERENCES:
patent: 3101101 (1963-08-01), Gearhart et al.
patent: 3174518 (1965-03-01), Klaus
patent: 3433249 (1969-03-01), Nelson
patent: 4454896 (1984-06-01), Barret, Jr. et al.

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