Flow rate control apparatus
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United States of America Patent
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Sep 5, 2017
Grant Date -
Mar 20, 2014
app pub date -
May 17, 2012
filing date -
May 20, 2011
priority date (Note) -
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Abstract
A flow rate control apparatus includes a valve mechanism capable of controlling a flow rate of a pressure fluid that flows from a second port to a first port. Second stopper walls are formed on a seating section of a needle valve constituting the valve mechanism and which is capable of advancing and retracting in an axial direction. In addition, in a total valve-closed state when the seating section of the needle valve is seated on a seat of a first body, the second stopper walls come into abutment and are stopped in a circumferential direction of the needle valve with respect to first stopper walls of the first body.
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