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Class Information
Number: 137/246.17
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 > Excess relief
Description: Valves having means to permit escape of the sealing liquid from its flow system to prevent excessive pressure therein or as an indication of complete flow therein.

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Patent Number Title Of Patent Date Issued

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