Discharge valve with handle lock

Details Discharge valve with handle lock Discharge valve with handle lock

1988-09-26

1990-01-02

Walton, George L.

Valves and valve actuation

With means for blocking or disabling actuator

Released by non-valving actuator motion

251101, 251144, F16K 3160, F16K 3500

Patent

active

048908142

ABSTRACT:
A portable tank for storage and transport of liquids has a bottom discharge opening closed by a discharge valve connected to the bottom of the tank. The discharge valve has a hollow valve body, a movable valve disk positioned within the body, and a handle connected to the valve disk extending through an opening in the valve body. The handle is rotatable to open and close the valve. A stationary locking plate is secured to the valve body and a locking member is movably mounted on the valve handle. The locking member is movable to and from a position in which the locking member is in an interference relationship with the locking plate locking the handle and, correspondingly, the valve disk in a predetermined position when the locking member is in the interference position.

REFERENCES:
patent: 1124965 (1915-01-01), Smith
patent: 1295503 (1919-02-01), Hooper
patent: 1426008 (1922-08-01), Posson
patent: 2301378 (1942-11-01), Crista
patent: 3648970 (1972-03-01), Hartmann et al.
patent: 3976095 (1976-08-01), Koch et al.
patent: 4093178 (1978-06-01), Hughes et al.
patent: 4208033 (1980-06-01), Kesterman
patent: 4570901 (1986-02-01), Koltgraver
patent: 4678159 (1987-07-01), Gardner et al.
patent: 4747427 (1988-05-01), Smith et al.
patent: 4770388 (1988-09-01), Carman

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