Fluid control valve having an adjustable valve stem and piston assembly
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United States of America Patent
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Jun 28, 2016
Grant Date -
Mar 27, 2014
app pub date -
Sep 26, 2012
filing date -
Sep 26, 2012
priority date (Note) -
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Abstract
Fluid control valves having an adjustable valve stem and piston assembly are described herein. An example fluid control valve includes a piston to control a flow of fluid through a valve body, a bonnet having a threaded bore and a housing to be removably disposed within and threadably coupled to the bonnet. The housing includes a first portion to be disposed in the bonnet, a roller assembly to be pivotally mounted to the first portion, the roller assembly to engage the piston to control a position of the piston. The housing including a second portion with a threaded outer surface to couple to the threaded bore of the bonnet. A valve stem is to move through the housing to control the movement of the roller assembly and the piston.
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