Fluid handling – Line condition change responsive valves – Pop valves
Patent
1991-09-26
1992-11-24
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
Pop valves
F16K 17168
Patent
active
051654440
ABSTRACT:
The spill valve includes an annular seat surrounding a circular port in the top of a tank containing liquid under pressure and a circular poppet valve member movable between open and closed positions relative to the seat. A plate overlies the valve member and extends laterally therebeyond and is integral around its periphery with a depending skirt which overlaps the seat around its perimeter and is spaced a slight lateral clearance distance therefrom for cooperation therewith and with the valve member to define an annular chamber when the valve is closed, the extension plate effectively increasing the valve member area against which the internal tank pressure is exerted when the valve member moves from its closed position. The valve is biased closed by a plurality of free weights which sit atop the extension plate. Opening movement of the valve is stopped by a stop plate which is spaced above the valve seat by support rods which extend through complementary openings in the extension plate such that the distance between the closed and fully open positions of the valve is more than one-half the diameter of the port. A handle is fixed to the valve member and extends outwardly therefrom through complementary openings in the extension plate, the weights and the stop plate. The port is defined by a nozzle structure which is arcuately tapered laterally outwardly and toward the tank wall to improve flow.
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Hepperle Stephen M.
Midland Manufacturing Corp.
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