Surge relief valve
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United States of America Patent
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Dec 4, 2007
Grant Date -
Mar 2, 2006
app pub date -
Sep 1, 2004
filing date -
Sep 1, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A surge relief valve comprising a main valve body having a dome port and an inlet port. The inlet port is in fluid communication with a first fluid. The invention further includes a dome reservoir connected to the main valve body via the dome port and arranged to hold a second fluid, a piston located in the main valve body, the piston in fluid communication with the reservoir, and a dampening ring positioned around the circumference of the piston operatively arranged to dampen the piston, wherein the first fluid exerts an upward force on the piston, the second fluid exerts a downward force on the piston, and the piston is arranged to move in response to a differential in the upward and downward forces, wherein the first and second fluids are isolated from one another.
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