Pressure control valve
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United States of America Patent
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N/A
Issued Date -
Oct 1, 2009
app pub date -
Mar 24, 2009
filing date -
Mar 26, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
For downsizing, cost reduction, and better characteristic, a pressure control valve (1) consists of a valve main body (2) having a valve chamber (2a); a valve seat (2d) within the valve chamber; a valve body (3) moving close to and away from the valve seat; and a disc spring (11) for energizing the valve body toward the valve seat, the valve body moves away from the valve seat when force acting in a direction for moving the valve body away from the valve seat by pressure within the valve chamber exceeds elastic force of the disc spring, a dimension of the valve main body in a valve body movement direction is lessened by use of the disc spring, a manufacturing cost is reduced by use of the disc spring made for general purpose, and the disc spring is preferable for high-pressure control due to its high spring rigidity.
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