Compensating valve for control of fluid flow

Details Compensating valve for control of fluid flow Compensating valve for control of fluid flow

1995-05-23

1996-04-30

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

251 636, F16K 31363

Patent

active

055115829

ABSTRACT:
A hydraulically operated adjustable valve for controlling fluid flow through an orifice directly responsive to changes in pressure monitored either upstream or downstream of the valve, suitable for use in high pressure regimes, where said valve is controlled by a piston having a main body, a shoulder and an extension, where hydraulic fluid within a hydraulic bore acts upon said extension to extend said piston, and where a biasing spring acts on the main body in combination with pressurized air within a lower air chamber air acting upon said shoulder to retract said piston. An apertured valve barrier allows the valve to compensate for pressure changes in a high pressure regime upstream of the valve.

REFERENCES:
patent: 1959909 (1934-05-01), Farmer
patent: 2597582 (1952-05-01), Gruss
patent: 3792714 (1974-02-01), Miller
patent: 3933338 (1976-01-01), Herd et al.
patent: 4634099 (1987-01-01), Danko et al.
patent: 4827963 (1989-05-01), Baker et al.
patent: 5218991 (1993-06-01), Gray

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