Fluid handling – Back flow prevention by vacuum breaking – Air vent in liquid flow line
Patent
1984-12-21
1986-04-15
Michalsky, Gerald A.
Fluid handling
Back flow prevention by vacuum breaking
Air vent in liquid flow line
1375124, 137853, F16K 2400
Patent
active
045820813
ABSTRACT:
The present invention comprises an outer housing and an inner housing having a pressure relief chamber defined therebetween. The inner housing receives fluid and directs it through a pressure outlet opening into the pressure relief chamber. The outer housing includes an outlet opening and a pressure relief opening. A flexible cylindrical seal surrounds the pressure outlet opening of the inner housing and is yieldably movable radially outwardly to a pressure flow position wherein it closes the pressure relief opening of the outer housing and opens the pressure outlet opening of the inner housing.
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Michalsky Gerald A.
Woodford Manufacturing Company
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