Air gap assembly

Details Air gap assembly Air gap assembly

1981-05-20

1983-08-23

Michalsky, Gerald A.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

137359, F16K 2400

Patent

active

043998321

ABSTRACT:
Air gap assembly for preventing backflow from a waste line to a dishwasher or other appliance connected to the line. The assembly comprises a vertically extending hollow body, an inlet tube extending upwardly within the body, an outlet tube connected to the body, an air vent in the body in proximity to the upper portion of the inlet tube, and a deflector cap mounted on the body above the inlet tube. Water entering the device through the inlet tube is deflected in a downward direction toward the outlet tube without leakage through the air vents, and the air vents prevent syphoning action which might otherwise produce undesired backflow from the waste line to the appliance connected to the inlet tube.

REFERENCES:
patent: 3155106 (1964-11-01), Baron
patent: 3183923 (1965-05-01), Hendrikson
patent: 3425438 (1969-02-01), Suffron
patent: 3512545 (1970-05-01), Weaver
patent: 3929149 (1975-12-01), Phillips

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