Adjustable flow limiting pressure compensated flow control

Details Adjustable flow limiting pressure compensated flow control Adjustable flow limiting pressure compensated flow control

1985-11-12

1988-10-25

Garrett, Robert E.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60462, 91446, 137495, F15B 1116, F15B 1518, F16K 3114

Patent

active

047794194

ABSTRACT:
A pressure-compensated flow-control valve with an adjustable limiting device controls the maximum speed of a fluid motor and eliminates an additional valving element found in prior art device. The flow control valve includes a flow limiting throttle opening integral with the flow control spool. The spool can be selectively rotated to adjust the effective size of the throttle opening thereby limiting flow through the valve. The spool establishes a constant rate of flow determined by the throttle opening or a directional control valve. By incorporation of the flow limiting function within the flow control spool, the overall cost and complexity of the pressure compensated flow control valve is reduced.

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Pippenger, J. J., et al., Fluid Power Controls, New York, N.Y.: McGraw-Hill Book Co., Inc., 5/1959, pp. 78-80.
Yeaple, F., Fluid Power Design Handbook, New York, N.Y.: Marcel Dekker, Inc., 5/1984, pp. 233-235.

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