Compound lever controlled spill valve

Details Compound lever controlled spill valve Compound lever controlled spill valve

1992-03-06

1993-04-27

Nilson, Robert G.

Fluid handling

Processes

Involving pressure control

1375278, 137531, F16K 1712

Patent

active

052053113

ABSTRACT:
A spill valve assembly is mounted to a flanged opening atop a liquid cargo tank of a barge. A valve disk normally closing an aperture in the assembly is maintained closed by a combination of pivoting lever arms. A self-centering post assembly atop the valve disk is held down by a valve retaining lever arm pivotally mounted on a horizontal axis horizontally spaced from the post assembly. When the pressure in the tank rises to the limit established by the valve setting, it moves the valve retaining lever arm sufficiently to tip a control lever arm connected to it and which moves in a way which facilitates further and more rapid pivoting of the retaining arm to thereby permit the spill valve to open freely and relieve the pressure in the tank. Balance weight adjustment means are provided to facilitate adjustment of spill setpoint pressures. A convenient field test of setpoint is provided.

REFERENCES:
patent: 46238 (1865-02-01), Hudson
patent: 64070 (1867-04-01), Burridge
patent: 1725428 (1929-08-01), Tilden
patent: 3060962 (1962-10-01), Graves
patent: 3074429 (1963-01-01), Farrow

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