Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1991-01-11
1991-08-06
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137853, 138 30, 251 5, 417540, F16K 1706
Patent
active
050368796
ABSTRACT:
A valve structured for attachment in-line with a conduit containing a fluid under pressure. The valve provides a flow path for the fluid, with the flow path including an area whereat all of the fluid passing through the valve must pass between a stationary surface and an interior surface of an elastic tubular member. A liquid filled chamber of the valve is isolated from the flow path, and in communication with an exterior surface of the elastic tubular member. A first pipe is attached to the valve in open communication with the liquid filled chamber. The other end of the first pipe is connected to a pressure vessel. A flexible diaphragm is affixed within the pressure vessel to divide the interior cavity thereof into a first and a second chamber. Both the first chamber and first pipe are completely filled with liquid and in communication with each other. A second pipe is connected in open communication with the second chamber of the pressure vessel, with the other end of the second pipe connected to the valve in open communication with a downstream side of the fluid flow path through the valve. A compression spring is positioned within the second chamber, and pressing against the flexible diaphragm. A manually operable adjustment is provided to select the amount of pressure the compression spring applies to the flexible diaphgram.
REFERENCES:
patent: 2448118 (1948-08-01), Pellettere
patent: 3534768 (1970-10-01), Powell
patent: 3741692 (1973-06-01), Rupp
patent: 3836113 (1974-09-01), Johnson
patent: 4195668 (1980-04-01), Lewis
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