Mechanical fastening method for valve plug with carbide tip
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United States of America Patent
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Mar 16, 2021
Grant Date -
Feb 28, 2019
app pub date -
Aug 31, 2018
filing date -
Aug 31, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A valve plug assembly includes a plug base, a first end of the base arranged for attachment to a valve stem, a second end of the plug base including a bore having a first portion and a second portion. The second portion of the bore is a conical terminus forming a first seat. A spacer has a through bore, a first end, and a second end, and is sized for insertion in the bore of the plug base and has a conical shape to engage the first seat, and the spacer also forms a second seat. A plug tip has a through bore and a conical end engaging the second seat and is arranged to engage the valve seat, and a cap screw extends through the plug tip and the spacer to mechanically secure the plug tip to the plug base.
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