Pressure relief valve
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United States of America Patent
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May 3, 2016
Grant Date -
Sep 19, 2013
app pub date -
Feb 13, 2013
filing date -
Feb 13, 2012
priority date (Note) -
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Abstract
A pressure relief valve for a hydraulic press tool, the pressure relief valve having a valve body, a fluid return channel, a needle and a seat, and the needle is movable between a closed position, in which the needle is in contact with the seat to block the channel, and an open position, wherein the needle is at a distance from the seat to allow fluid to flow in the channel, and the fluid flow then causes movement of the seat away from the needle and completes the opening of the fluid return channel.
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