Fluid control valves with angled metering ports

Details Fluid control valves with angled metering ports Fluid control valves with angled metering ports

1985-10-17

1987-03-03

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

1376253, 251282, F15B 1304

Patent

active

046467866

ABSTRACT:
Flow control valve includes angled metering ports in the valve sleeve for directing the momentum of the fluid flow against the respective valve flow metering edges in a direction producing an opening reaction force on the valve upon initial valve opening in opposition to the usual axial flow forces tending to close the valve to reduce the flow force gain acting on the valve. Preferably, the angled metering ports are disposed at an angle of approximately 45.degree. or greater from a line perpendicular to the valve axis. Also, a single set of circumferentially spaced angled metering ports is desirably provided for each return or high pressure flow path for producing the desired opening reaction force on the valve.

REFERENCES:
patent: 2964023 (1957-07-01), Meulendyk
patent: 2987050 (1961-06-01), Oppenheimer
patent: 3323549 (1967-06-01), Carrington
patent: 4155535 (1979-05-01), Seamone
ASME Paper No. 56-A-121, dated Jul. 31, 1956, entitled "Compensation of Steady-State Flow Forces in Spool-Type Hydraulic Valves".

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