Water hammer prevention valve and method
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United States of America Patent
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Oct 20, 2015
Grant Date -
Jul 14, 2011
app pub date -
Jan 12, 2010
filing date -
Jan 12, 2010
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Abstract
A valve for preventing water hammer includes a speed reduction device for reducing a speed at which the valve may be closed. A method of preventing water hammer includes closing a valve at a fire hydrant after extracting water from the fire hydrant, in which the valve comprising a speed reduction device that increases an amount of time needed for closing the valve, and operating the valve to close the valve comprises operating the speed reduction device.
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