Fluid control valve
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United States of America Patent
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Jan 1, 2019
Grant Date -
Jun 16, 2016
app pub date -
Dec 1, 2015
filing date -
Dec 11, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A fluid control valve includes: a drive section; body provided with first port, second port, and valve seat; and valve element formed columnar-shaped and coupled with the drive section, and the valve element includes annular sealing protrusion annularly protruding from end face located on side facing the valve seat, the sealing protrusion being provided at leading end with annular sealing portion to be pressed against the valve seat for sealing and at least the annular sealing protrusion is made of fluororesin. The valve element is configured such that the annular sealing portion is radially displaced with displacement amount of no more than 6.175 μm when the annular sealing portion is pressed against the valve seat by the drive section so that abrasion caused by deformation of the valve element in valve closing is restrained and generation of particles is prevented.
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