Valve for use in jet engine systems and the like

Details Valve for use in jet engine systems and the like Valve for use in jet engine systems and the like

1982-04-19

1985-12-31

Cohan, Alan

Fluid handling

Systems

Multi-way valve unit

137508, F16K 3112, F16K 3140

Patent

active

045614687

ABSTRACT:
A valve is formed with a valve chamber and with an entrance port, a first exit port and a relief exit port each of which communicates with the chamber. A valve member is movably mounted within the chamber, and a pair of valve seats is mounted within the chamber for cooperation with the valve member, one of the seats being movable. The valve member and movable seat are biased in such a manner that the valve is normally seated with respect to both seats. When fluid in the entrance port exceeds a certain crack pressure, the movable seat moves away from the valve member and the fluid flows out the relief exit port. To stop flow out the relief exit port without creating a pressure surge, the valve member, actuated by a control, seats against the movable seat and at the same time moves away from the other seat so that the fluid continues to circulate through the first-named exit port. The valve is particularly adapted for efficient control of the flow of fuel during start-up, operation and shutdown of the jet engine of an aircraft.

REFERENCES:
patent: 3334647 (1967-08-01), Whitelaw
patent: 3635247 (1972-01-01), Myers
patent: 3924651 (1975-12-01), Hippel et al.
patent: 4026464 (1977-05-01), Doherty, Jr.
patent: 4108205 (1978-08-01), Hawley
patent: 4224962 (1980-09-01), Orszullok
patent: 4250920 (1981-02-01), Traylor

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