Control Valve for Vacuum Systems
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United States of America Patent
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N/A
Issued Date -
Apr 2, 2015
app pub date -
Jun 3, 2013
filing date -
Jun 3, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A valve assembly including a housing having first and second ports; a cylinder assembly mounted on such housing having a piston rod displaceable along an axis of such first port, provided with a valve plug including a first component having a passageway therethrough intercommunicable with the interior of such housing and such first port, and a second component supported on and displaceable axially relative to such first component, wherein upon extension of such plug into closing engagement with such first port, such passageway will be obstructed and upon retraction of such plug out of closing engagement with such first port, such passageway will be unobstructed.
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