Control valve construction

Details Control valve construction Control valve construction

1979-11-05

1981-08-25

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

13762564, 137870, F16K 1110

Patent

active

042853630

ABSTRACT:
A servovalve including a base, first and second flappers mounted on the base and attached to first and second armatures, respectively, first and second nozzles on the base for discharging fluid, third and fourth nozzles on said base for receiving fluid from the first and second nozzles, respectively, first and second springs for normally biasing the first and second flappers, respectively, into positions for effectively preventing flow of fluid from the first and second nozzles, torque motor structure including first and second coils operatively associated with the first and second armatures for simultaneously causing either one of said flappers to move away from its associated nozzle while the other flapper moves into a more closed relationship with its associated nozzle depending on the direction of current flow through said coils, and gain adjustment blocks mounted on the first and second armatures.

REFERENCES:
patent: 3117585 (1964-01-01), Gerwig et al.
patent: 4126293 (1978-11-01), Zeuner et al.
patent: 4131130 (1978-12-01), Ruby

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