Mixing valves with ceramic flow control elements
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United States of America Patent
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Jul 24, 2001
Grant Date -
N/A
app pub date -
Mar 3, 2000
filing date -
Mar 3, 2000
priority date (Note) -
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Abstract
A novel non-scald mixing valve is provided of the type that utilizes a pressure-balancing piston to sense a change in the set flow conditions and automatically open or closes orifice to compensate for the change, the valve being characterized by the use of ceramic valving elements to provide both the valve shut-off function and the temperature-ratioing function. The ceramic valving elements fulfill the requirement that the positive shut-off function must be accomplished up-stream of the sensing pressure-balancing piston in order to avoid the use of check valves in the hot and cold water supplies.
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