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Class Information
Number: 137/246.18
Name: Fluid handling > With cleaner, lubrication added to fluid or liquid sealing at valve interface > Liquid supplied at valve interface > Screw feed > With check valve > Jacking
Description: Valves wherein the valve is lifted from its seat to aid actuation by the pressure of the lubricant.

Patents under this class:

Patent Number Title Of Patent Date Issued

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