Ball valve with handle locking mechanism

Details Ball valve with handle locking mechanism Ball valve with handle locking mechanism

1988-08-02

1989-07-18

Walton, George L.

Valves and valve actuation

With means for blocking or disabling actuator

Released by non-valving actuator motion

137385, 251104, 251110, 251288, 251316, 70177, 70180, F16K 3506

Patent

active

048487244

ABSTRACT:
A ball valve of the type comprising a body including a valve chamber having inlet and outlet ports, and a rotatable ball element disposed within the valve chamber, the ball defining a conduit communicating with the inlet and outlet ports. The ball is actuated by a control lever to rotate between a first open position and a second closed position of the valve; a manually operable lock is provided to retain the control lever and the ball element in those first and second positions and in at least one intermediate operative position.

REFERENCES:
patent: 576956 (1897-02-01), Doyle
patent: 664462 (1900-12-01), Campbell
patent: 932188 (1909-08-01), Strelezky
patent: 983842 (1911-02-01), Schneible
patent: 1495403 (1924-05-01), Davis
patent: 1759433 (1930-05-01), Carmosin
patent: 2512320 (1950-06-01), Fischer
patent: 2678186 (1954-05-01), Blackford
patent: 3858843 (1975-01-01), Hartmann
patent: 4577831 (1986-05-01), DiBartolo

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