Vacuum operated valve
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United States of America Patent
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Jul 7, 2020
Grant Date -
Mar 22, 2018
app pub date -
Mar 14, 2016
filing date -
Mar 12, 2015
priority date (Note) -
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Abstract
A fill valve with pressure chamber having an open bottom end and a diaphragm at a top end such that falling water level in the toilet tank causes the diaphragm to flex in a first direction, thereby moving a sealing member to an open position, with a venturi in the fill valve keeping the sealing member in the open position until water refilling the tank causes the diaphragm to flex in a second direction, thereby moving the sealing member back to the closed position.
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