Anti-backflow plumbing fitting
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United States of America Patent
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Oct 25, 2022
Grant Date -
N/A
app pub date -
May 11, 2021
filing date -
May 11, 2021
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An anti-backflow plumbing fitting (10) includes an annular body (12) which bounds an interior area (20). The body includes a body outlet (28) and a plurality of cup portions (40) each of which includes an inlet opening (46). An annular body side wall (22) includes at least one radially extending side wall air gap (36). Each cup portion further includes a pair of angularly disposed cup air gaps (54). An inlet end wall (30) includes a plurality of body flow inlets (52) which are each associated with a respective cup portion. Each body flow inlet underlies a respective cup portion and is elongated in aligned relation with each cup air gap, to enable liquid to flow from the respective inlet opening of a cup portion into the interior area. The inlet end wall is sloped and includes a plurality of drain holes (66, 68) therein. A plurality of vanes (60) extend in the interior area intermediate of immediately adjacent body flow inlets.
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