Pressure compensated control valve

Details Pressure compensated control valve Pressure compensated control valve

1977-02-07

1978-10-03

Michalsky, Gerald A.

Fluid handling

Systems

Supply and exhaust

91446, 13762568, F15B 1304

Patent

active

041178629

ABSTRACT:
A pressure compensating valve spool assembly for a hydraulic flow control valve the spool assembly being slidably positioned in the central bore of a valve housing for movement from a neutral position wherein fluid will flow through the valve assembly to reservoir to operative positions in either direction to provide fluid communication between fluid inlet passages to one of a pair of cylinder passages in the valve housing, the other of said cylinder passages being connected to one of the pair of reservoir passages. The valve spool assembly includes a symmetrical valve spool having valve members at each end which are responsive to variations in the pressure relation between inlet pressure and cylinder pressure to control the fluid flow rate to the cylinder passage. Any excess flow is bypassed to reservoir at minimum pressure loss.

REFERENCES:
patent: 3136328 (1964-06-01), Hipp
patent: 3910311 (1975-10-01), Wilke
patent: 3985153 (1976-10-01), Thomas

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