Valve with cushioned opening system
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United States of America Patent
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-
Mar 27, 2012
Grant Date -
Sep 25, 2008
app pub date -
Oct 20, 2006
filing date -
Oct 20, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A valve including a valve body having an inlet port and an outlet port, a valve stem, a valve seat, an opening control chamber for the valve stem, which chamber, by being fed with fluid, urges the valve stem to move towards the open position of the valve, a return spring of opposing effect, and a piston suitable for sliding in the body so as to urge contact to be established between the valve stem and the seat. The valve seat is formed on the piston, which piston is provided with a bore in which the valve stem is in its closure movement, the fluid flows out via a constriction from a damping chamber.
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