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Class Information
Number: 137/246.13
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Liquid supplied at valve interface > Feed by or with actuation
Description: Valves wherein the feed means is actuated by the valve actuator or is so interrelated therewith that feeding of sealing liquid is dependent on valve actuation.

Patents under this class:

Patent Number Title Of Patent Date Issued
6164930 Apparatus for regulating flow of a pumped substance Dec. 26, 2000
6099275 Biased open suction valve Aug. 8, 2000
4651769 Lubricated water valve Mar. 24, 1987
4262690 High pressure stem packing for gate valves Apr. 21, 1981

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