Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1985-09-11
1987-01-27
Nilson, Robert G.
Fluid handling
Line condition change responsive valves
Direct response valves
137460, 13753311, F16K 1724
Patent
active
046388354
ABSTRACT:
The present invention relates to an automatic overflow control apparatus for a pipeline passage. Specifically, this invention is suitable for use in a pipeline having a low pressure flow. The apparatus is of the type having a housing, an inlet port connected to an external flow supply, an outlet port, a flow channel being positioned between, and in communication with the inlet port and the outlet port and a safety valve having a ball member disposed in the flow channel, to prevent overflow through the apparatus. The safety valve has a valve seat having an elastic annular shell wherein the ball member may be seated, deforming the shell and being circumferentially gripped therein, thereby sealing the flow channel automatically controlling overflow which can rupture the pipeline.
REFERENCES:
patent: 1078347 (1913-11-01), Haas
patent: 1100219 (1914-06-01), Butters
patent: 2916042 (1959-12-01), Brady
patent: 3322145 (1967-05-01), Prosser
patent: 3407827 (1968-10-01), Follett
patent: 3977430 (1976-08-01), Bushee
patent: 4030520 (1977-06-01), Sands
patent: 4257448 (1981-03-01), Shiu
Bloom Leonard
Nilson Robert G.
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