Selective valve to pass fluids

Details Selective valve to pass fluids Selective valve to pass fluids

1991-08-19

1992-08-04

Cohan, Alan

Pumps

Including separate port on noncyclic valve for venting or...

137199, F04B 4700

Patent

active

051353660

ABSTRACT:
Selective valves to pass fluids consisting of a body and a housing, provided with a midway communicating passage in which is placed a dynamically governed mechanical system able to separate gases from fluids compressed by a subsurface oilfield pumps. The mechanical system utilizes a pair of half-shells, a ball or equivalent, provided with or acting on a roughness controlled surface which allows only a gas to pass.

REFERENCES:
patent: 2908282 (1959-10-01), Maisch
patent: 3031845 (1962-05-01), Ludwig
patent: 3081788 (1963-03-01), Lewis
patent: 3861471 (1975-01-01), Douglas
patent: 4490095 (1984-12-01), Soderberg

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