High pressure, high flow fast response control valve

Details High pressure, high flow fast response control valve High pressure, high flow fast response control valve

1991-04-15

1992-11-10

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 611, F16K 31126

Patent

active

051617757

ABSTRACT:
The fast response control valve employs two diaphragms (24, 26) joined to a common valve body (28) in a configuration which employs pressure acting on the larger diaphragm to ensure valve seating. The smaller diaphragm isolates the larger diaphragm from the fluid pressure reservoir. An electrical solenoid valve (40) toggles between a first state which supplies pressure to the larger diaphragm causing the valve to seat and a second state which vents the pressure acting on the large diaphragm allowing the valve body to unseat. If desired, the solenoid may be operated using a variable duty cycle drive signal (52) to control the response characteristics of the diaphragm valve.

REFERENCES:
patent: 2472070 (1949-06-01), Garretson
patent: 4081171 (1978-03-01), Morgan et al.
patent: 4794940 (1989-01-01), Albert et al.

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