Fluid flow control device

Details Fluid flow control device Fluid flow control device

1980-08-18

1982-12-21

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

251209, G05D 701

Patent

active

043644090

ABSTRACT:
A device for controlling flow of a pressurized fluid including conduit means for conveying the fluid without substantial directional deviation in the direction of flow. Metering means is disposed in said conduit means for control of the flow of said fluid. A throttle piston is movable into and out of the conduit means and is responsive to the flow of the fluid for maintaining a constant pressure drop across the metering means for any given setting of the metering means. The metering means includes a pierced cylindrical valve body rotatable on an axis transverse to the axis of the conduit means with two scale index structures attached thereto for indicating adjustment of flow rates appropriate to either of two source pressures.

REFERENCES:
patent: 863264 (1907-08-01), Connet
patent: 991641 (1911-05-01), Plantinga
patent: 1538427 (1925-05-01), Earl
patent: 1640842 (1927-08-01), Loomis
patent: 1745059 (1930-01-01), Rush
patent: 2510514 (1950-06-01), Mueller
patent: 2633869 (1953-04-01), Plank
patent: 2644482 (1953-07-01), McCallum
patent: 3346006 (1967-10-01), Horton
patent: 3395726 (1968-08-01), Cross
patent: 4210171 (1980-07-01), Rikuta

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