Fluid handling – Line condition change responsive valves – Safety cut-off requiring reset
Patent
1988-07-25
1989-11-14
Hepperle, Stephen M.
Fluid handling
Line condition change responsive valves
Safety cut-off requiring reset
137462, 137504, 137517, 137599, F16K 1730
Patent
active
048800309
ABSTRACT:
A device for use as a safety device to cut off the water supply to a house or building in the event of overly high water consumption due to a leak or break in the plumbing in the house or building is disclosed which has only three moving parts and is of simple and inexpensive to manufacture construction. The safety flow control device of the present invention has a three position selector valve which selectively either allows water to flow freely through the safety flow control device as if it were not there, diverts water through a safety flow chamber, or acts as a shutoff valve by preventing the flow of water into the main water line entrance of the house or building. When the device is operating as a safety flow control device, a piston having apertures therethrough is spring biased away from a flange to allow water to pass through the device; when the water pressure is large, indicating a downstream plumbing break or leak, the water pressure will overcome the force exerted by the spring and force the piston against the flange, blocking the apertures and stopping flow through the device.
REFERENCES:
patent: 805498 (1905-11-01), Stewart
patent: 806268 (1905-12-01), Koontz
patent: 1186147 (1916-06-01), Syakas
patent: 3106937 (1963-10-01), Sands
patent: 3377109 (1968-04-01), Scott
patent: 4049016 (1977-09-01), Henry
Hepperle Stephen M.
Posta Jr. John J.
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