Device for regulating the delivery pressure of combustible gases
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United States of America Patent
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Apr 20, 2010
Grant Date -
Jan 8, 2009
app pub date -
Jun 20, 2005
filing date -
Jul 2, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A device for regulating the delivery pressure of gases includes a valve unit having at least one valve seat and a respective closure element displaceable along an axis with respect to the valve seat which is controlled by a diaphragm. The device further includes a first spring which acts on the diaphragm in order to subject it to a preselected resilient load. A second spring is selectively activated to exert an additional resilient load on the diaphragm. The device includes a handle associated with the first and second springs in order to impose selectively the desired delivery pressure value, between a minimum value and a maximum value of pre-calibration, the pressure value being proportionally correlated with a predetermined resilient load exerted on the diaphragm.
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