Liquid dispensing and vapor recovery system and valve assembly u

Details Liquid dispensing and vapor recovery system and valve assembly u Liquid dispensing and vapor recovery system and valve assembly u

1977-11-25

1979-05-08

Aegerter, Richard E.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

141 59, F16K 1726, F16K 2400

Patent

active

041530730

ABSTRACT:
A liquid dispensing and vapor recovery system in which an underground storage tank applies gasoline to a dispenser located at a filling station or the like for dispensing the gasoline to a vehicle gasoline tank, under the force of a pump located in the storage tank. A vapor return line is provided for passing vapors in the vehicle tank through the dispenser and back to the storage tank. A valve assembly is utilized to permit the flow of vapor from the vehicle tank to the storage tank and to prevent the flow of vapor from the storage tank to the vehicle tank in the absence of a predetermined relatively high pressure.

REFERENCES:
patent: 2191636 (1940-02-01), Walker

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