Butterfly valve
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United States of America Patent
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May 5, 2015
Grant Date -
Jul 4, 2013
app pub date -
Sep 18, 2011
filing date -
Sep 20, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A butterfly valve (100) is provided. The butterfly valve (100) includes a valve body (103) including a valve bore (109) passing through the valve body (103), with the valve bore (109) including an upstream valve bore portion (109U) and a downstream valve bore portion (109D), a shaft bore (112), a valve shaft (121) located in the shaft bore (112) and extending substantially across the valve bore (109), and a valve flap (107) affixed to the valve shaft (121) and configured to be rotated by the valve shaft (121). The valve flap (107) is configured to rotate between a closed orientation blocking the valve bore (109) and an open orientation. The valve flap (107) is affixed on an upstream valve bore portion side of the valve shaft (121), wherein incoming fluid presses the valve flap (107) against the valve shaft (121).
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