Rotary-action directional control valve

Details Rotary-action directional control valve Rotary-action directional control valve

1988-03-01

1989-06-06

Cohan, Alan

Fluid handling

Systems

Multi-way valve unit

13762524, 1375962, F15B 1304

Patent

active

048362492

ABSTRACT:
An improved rotary-action directional flow control valve for hydraulic hydraulic motors and the like. The valve provides pressure-compensating constant flow in one or both directions. The valve has a main spool rotatable within a valve body to plural positions to determine flow direction, and one or more inner spools or the like in cavities within the main spool to provide the pressure-compensating. A plurality of spool voids and orifices form, with the valve body, flow channels between ports in the valve body.

REFERENCES:
patent: 3443586 (1969-05-01), Christensen
patent: 3973379 (1976-08-01), Ecker et al.
patent: 4109682 (1978-08-01), Grudjonsson

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