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Class Information
Number: 137/315.2
Name: Fluid handling > With repair, tapping, assembly, or disassembly means > Assembling or disassembling rotary valve > Rotary ball valve > Particular valve seat or interface seal > Replaceable

Sub-classes under this class:

Class Number Class Name Patents
137/315.21 With top entry valve 21

Patents under this class:

Patent Number Title Of Patent Date Issued
8439077 Faucet outlet structure May. 14, 2013
6843889 Coke drum bottom throttling valve and system Jan. 18, 2005
6640826 Systems and methods for servicing ball valves Nov. 4, 2003
5503180 Valve having easily replaceable seat Apr. 2, 1996
5224829 Rotatable valve having upper and lower parts Jul. 6, 1993
4887629 Plug valve and method of assembly Dec. 19, 1989
4844410 Adjustable seat assembly for a valve Jul. 4, 1989
4739792 Valve Apr. 26, 1988
4617957 Rotary plug valve Oct. 21, 1986
4610266 Valve assembly for securing a cover to a valve body with fasteners which are free of tensile stress Sep. 9, 1986
4519412 Valve and seal therefor May. 28, 1985
4423749 Angle cock improvements Jan. 3, 1984
4280526 Lockable end plug for valve housings Jul. 28, 1981
4273152 Control valve assembly with onstream seal removal feature Jun. 16, 1981
4135545 Ball valve seat assembly having a swaged seat ring to retain the face seal Jan. 23, 1979
4078763 Oil extractor for vehicle engines and the like Mar. 14, 1978

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