Manual override assembly for pilot-operated valve

Details Manual override assembly for pilot-operated valve Manual override assembly for pilot-operated valve

2005-06-07

2005-06-07

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Electrically actuated valve

With nonelectrical actuator

C251S014000, C251S030020

Reexamination Certificate

active

06902143

ABSTRACT:
In a pilot-operated valve having a valve body, including inlet and outlet portions controllably interconnected via a main piston bore portion; a main piston movable within the main piston bore; an operator portion; an operator assembly including a movable plunger assembly; and an actuating mechanism for actuating the plunger assembly, wherein the improvement comprises a further bore located within the valve body and a manually-operated override assembly retained therein, including a stem having a tool actuating portion; a cam portion extending radially into the operator bore portion and, upon a first predetermined rotation physically actuating the plunger assembly; and an actuating surface extending tangentially into the main piston bore portion which, upon a second rotation physically actuates the main piston. A method of actuating the manual override assembly is also set forth.

REFERENCES:
patent: 2861592 (1958-11-01), Collins
patent: 3236494 (1966-02-01), Frantz
patent: 3429340 (1969-02-01), Kosmalski et al.
patent: 4501299 (1985-02-01), Klimowicz et al.
patent: 4643393 (1987-02-01), Kosugi et al.
patent: 4647007 (1987-03-01), Bajka
patent: 4727899 (1988-03-01), Massey et al.
patent: 4916437 (1990-04-01), Gazzaz
patent: 5271599 (1993-12-01), Kolchinsky et al.
patent: 5285814 (1994-02-01), Pettersson et al.
patent: 5372351 (1994-12-01), Oliver
patent: 6343615 (2002-02-01), Miller et al.
patent: 6394412 (2002-05-01), Zakai et al.
patent: 6684898 (2004-02-01), Wiggins et al.

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