Fluid handling – Control by change of position or inertia of system – With second control
Patent
1999-03-01
2000-11-07
Hepperle, Stephen M.
Fluid handling
Control by change of position or inertia of system
With second control
137 43, 137 45, 1374934, 1374938, F16K 1719, F16K 1736
Patent
active
061421677
ABSTRACT:
A vent valve assembly with roll over shut-off capability includes a housing, a vent valve that opens to allow vapor to escape from the tank in response to tank vapor pressure greater than a predetermined positive pressure and that opens to allow air or vapor entrance to the tank in response to tank vapor pressure below a predetermined negative pressure. A roll over valve is provided to open and close the fluid flow path between the vent valve and the tank interior, and a rocker arm assembly is rotatably mounted to the housing for positioning the roll over valve in the open position when the tanker is upright and for moving the roll over valve to the closed position when the tanker rolls more than a predetermined angle relative to the upright position. Stored liquid rising above the shut-off valve applies a further force closing the shut-off valve in relation to the head pressure. In one example, the roll over valve is a poppet type mounted below the vent valve assembly, the rocker arm is weighted below the rocker arm pivot, and the rocker arm includes a cam that forces the poppet upward to close in response to tank roll over.
REFERENCES:
patent: 4593711 (1986-06-01), Morris
patent: 4694847 (1987-09-01), Szlaga
patent: 4709901 (1987-12-01), Pierson et al.
patent: 4934403 (1990-06-01), Mooney et al.
patent: 5135024 (1992-08-01), LeBlanc et al.
patent: 5261450 (1993-11-01), Betts
patent: 5460197 (1995-10-01), Kerger et al.
Tiona.RTM. PPV Pressure Vacuum Vent for MC 306 Tank Vehicles, not dated,Betts Industries, Warren, Pennsylvania, Product Sheet (Front and Back).
Dreyfus Edward
Hepperle Stephen M.
Technalink, Inc.
LandOfFree
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