Flow Rate Regulation Valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
N/A
Issued Date -
May 15, 2008
app pub date -
Oct 3, 2005
filing date -
Nov 25, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A flow rate regulation valve (10) comprises a housing (11) formed with an axial hole (14) and a valve hole (13) communicating with the axial hole, a needle valve (60) adapted to move within the axial hole relative to a valve seat located between the axial hole and the valve hole, and a flow rate adjust knob (40) mounted at the proximal end of the needle valve extending from the housing. The needle valve is moved relative to the valve seat by rotating the flow rate adjust knob thereby to regulate the flow rate of the fluid flowing through the valve hole. A first valve body (67) is arranged at the forward end of the needle valve and a second valve body (65) extends from the end surface (67a) of the first valve body. The cross section of the first valve body is larger than that of the second valve body, so that at the time of closing the flow rate regulation valve, the end surface of the first valve body abuts with a valve seat (16) located between the axial hole and the valve hole, and the second valve body is inserted in the valve hole. As a result, fluid can be supplied in a stable fashion with a flow rate that is linearly maintained.
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