Shuttle valve
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United States of America Patent
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Mar 19, 2013
Grant Date -
Jun 24, 2010
app pub date -
Dec 17, 2009
filing date -
Dec 20, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A shuttle valve useful in connection with operation of underwater blowout preventers employs soft seals sealing an annulus between an inlet bore and the outer periphery of the shuttle to provide hydraulic function control from a high pressure low flow supply source such as a low volume positive displacement pump on a remotely operated vehicle without losing opposing inlet sealing and hydraulic fluid dump the opposing inlet during a return stroke of the pump.
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