With repair, tapping, assembly, or disassembly means > With provision of alternate wear parts > Valve heads and/or seats > Successively used adjacent independent elements > Patents

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Class Information
Number: 137/329.06
Name: Fluid handling > With repair, tapping, assembly, or disassembly means > With provision of alternate wear parts > Valve heads and/or seats > Successively used adjacent independent elements
Description: Devices in which are stored adjacently a plurality of separate elements forming duplicate surfaces successively used.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
4880029	Drain valve	Nov. 14, 1989
4848728	Coupling arrangement	Jul. 18, 1989
4355784	Method and apparatus for controlling back pressure	Oct. 26, 1982
4351355	Drain valve	Sep. 28, 1982