Lubricated plug valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 22, 1986
Grant Date -
N/A
app pub date -
Jul 8, 1985
filing date -
Jul 8, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotary plug valve having a smooth, cylindrical inner sealing surface between the flow passageways with a grease fitting port opening through it. When the valve plug is turned to an intermediate position in alignment with the grease fitting, a charge of grease may be introduced through the fitting to be confined by a seal ring on the plug. When the plug is thereafter turned, a quantity of grease is distributed over the inner surface to facilitate valve operation.
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