Adjustable hydraulic control valve module

Details Adjustable hydraulic control valve module Adjustable hydraulic control valve module

1995-09-22

1997-12-02

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

1374875, 1374925, G05D 706

Patent

active

056925379

ABSTRACT:
An adjustable valve for controlling fluid flow between an inlet and an outlet in a valve. A compressed spring biases a valve member against the valve inlet to prevent fluid flow until the fluid pressure reaches a certain level. One end of the spring contacts a hydraulic plunger which is moved with a hydraulic fluid. The hydraulic fluid pressure can be raised to increase the spring force acting against the valve element, and the hydraulic fluid pressure can be reduced to decrease the spring force acting against the valve element. The flow rate at the valve outlet can be monitored, and flow rate signals can be transmitted to a controller for adjusting the hydraulic fluid pressure in response to the flow rate detected.

REFERENCES:
patent: 4333486 (1982-06-01), Ciccozzi
patent: 4386626 (1983-06-01), Hehl
patent: 4540018 (1985-09-01), Dantlgraber
patent: 4548233 (1985-10-01), Wolfges

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