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Class Information
Number: 137/246.16
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
Description: Valve having check valve means in the lubrication or sealing system.

Sub-classes under this class:

Class Number Class Name Patents
137/246.17 Excess relief 0
137/246.18 Jacking 0

Patents under this class:

Patent Number Title Of Patent Date Issued
8667768 Evacuatable container Mar. 11, 2014
8112971 Valve for sealing an evacuation port of a container Feb. 14, 2012
6488265 Ball valve assembly Dec. 3, 2002
4575101 Device for safe on-stream addition of valve packing Mar. 11, 1986
4318422 Butterfly valve Mar. 9, 1982

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