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Class Information
Number: 137/243.4
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Cleaning or steam sterilizing > Mechanical cleaning > Valve grinding motion of valve on seat > With swivel-preventing means
Description: Devices in which a normally swiveled connection between the head and stem is blocked to cause the head to rotate on the seat as the stem rotates.

Patents under this class:

Patent Number Title Of Patent Date Issued
4169487 Globe-valve locking apparatus for valve lapping Oct. 2, 1979

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