Radial sealing butterfly valve
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United States of America Patent
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Apr 17, 2018
Issued Date -
N/A
app pub date -
Jan 14, 2016
filing date -
Jan 16, 2015
priority date (Note) -
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Abstract
A valve assembly having a valve housing, the valve housing defining a passageway. A flapper valve arranged within the passageway is coupled to a rotatable valve shaft. A flexible wall, sealed along opposed edges to the valve housing, is controllable to at least two positions. The first position seals against the flapper valve and the second position releases the flapper valve allowing for ready movement of the valve.
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