Quick bleed exhaust valve

Details Quick bleed exhaust valve Quick bleed exhaust valve

1976-06-09

1977-08-16

Cline, William R.

Fluid handling

Self-proportioning or correlating systems

Supply and exhaust type

F16K 4500

Patent

active

040419703

ABSTRACT:
A fluid exhaust valve for connection between a fluid actuator and a fluid supply for the quick bleeding of fluid from the fluid actuator. The exhaust valve has a piston valve member mounted for movement in a valve chamber between open and closed positions relative to an exhaust port in fluid communication with the valve chamber. An internal passageway through the piston valve member has a separate check ball valve therein to permit the flow of fluid from the fluid supply to the fluid actuator when the ball valve is open and to prevent a reverse flow from the actuator to the inlet passage when the ball valve is closed while permitting the piston valve member to be fully exposed to the fluid pressure of the actuator. When the inlet flow pressure from the fluid supply is reduced, a fluid pressure differential is quickly reached on opposite faces of the piston valve member adequately to move the piston valve member to an open position of the exhaust flow passage for the rapid exhaust of fluid from the actuator through the exhaust port.

REFERENCES:
patent: 2717612 (1955-09-01), Affleck
patent: 2816563 (1957-12-01), Pappas
patent: 3464321 (1969-09-01), Piotrowski, Jr.
patent: 3827451 (1974-08-01), Roob
patent: 3967635 (1976-07-01), Sealfon et al.

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