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Class Information
Number: 251/152
Name: Valves and valve actuation > With correlated flow path > Pipe coupling or union > Valve seat and coupling element removable as a unit
Description: Devices in which the valve seat and a pipe coupling element are a unitary subassembly.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8418994 Hot-cold inlet pipe structure Apr. 16, 2013
8028525 Multistage exhaust turbocharger Oct. 4, 2011
7516942 Plug-style air-conditioning service valve Apr. 14, 2009
7487955 Passive desuperheater Feb. 10, 2009
7051763 Faucet adapter May. 30, 2006
6883538 Flow control valve coupling structure Apr. 26, 2005
6837270 Gas delivery system and pneumatic yoke for a pressurized gas reservoir Jan. 4, 2005
6648018 Bypass control valve Nov. 18, 2003
6637726 Valve core Oct. 28, 2003
6557825 Air admittance valve connector assembly May. 6, 2003
6352086 Pressure relief nipple for RV hook-up Mar. 5, 2002
6308735 Weldable fuel tank valve apparatus Oct. 30, 2001
6189567 Tank valve mounting assembly Feb. 20, 2001
6189568 Series mountable gas valve Feb. 20, 2001
6138987 Quick-release connector Oct. 31, 2000
6123106 Thrust washer Sep. 26, 2000
6109590 Iron ore slide valve with internal support clamp Aug. 29, 2000
6105932 Radiator shut off valve Aug. 22, 2000
6085778 Wall connection Jul. 11, 2000
6062537 Fast pipe joint May. 16, 2000
6059261 Universal connector May. 9, 2000
6052995 Valve for an internal combustion engine, and an internal combustion engine including the valve Apr. 25, 2000
5967489 Fluid control apparatus Oct. 19, 1999
5954088 Ball valve adapted to couple with an output drive shaft of a valve control device Sep. 21, 1999
5906224 Reserve fuel valve and method for making May. 25, 1999
5836352 Environmental fill valve Nov. 17, 1998
5752690 Threaded coupling and pig injector valve May. 19, 1998
5429151 Through-hull valve and mounting unit Jul. 4, 1995
5419356 Hot water tank construction, parts therefor and methods of making the same May. 30, 1995
5405062 Rotary product supply and discharge distributors Apr. 11, 1995
5348048 Quick connect coupling system Sep. 20, 1994
5348037 Hot water tank construction, parts therefor and methods of making the same Sep. 20, 1994
5284318 Fluid connection and control device for fluid machines Feb. 8, 1994
5261438 Hot water tank construction, parts therefor and methods of making the same Nov. 16, 1993
5246200 Quick shut-off valve for in-line installation with a defective valve Sep. 21, 1993
5197711 Fluid connection and control device for fluid machines Mar. 30, 1993
5104092 Ball valve with improved sealing apparatus Apr. 14, 1992
5052433 Starter connection for progressive pressurizing of pneumatic installations Oct. 1, 1991
5004209 Dry disconnect coupling and safety cap for portable tanks Apr. 2, 1991
4991621 Pressure regulator Feb. 12, 1991
4874008 Valve mounting and block manifold Oct. 17, 1989
4776369 Check valve having snap-on clamping sleeve Oct. 11, 1988
4768537 Air hose to water hose adapter and connector Sep. 6, 1988
4751938 Apparatus for supporting structure between bolted flanges Jun. 21, 1988
4708158 Ball-type stop cocks having standard matching flanges Nov. 24, 1987
4653724 Universal type butterfly valve and manufacturing process for same Mar. 31, 1987
4499919 Valve Feb. 19, 1985
4473212 Blast gate Sep. 25, 1984
4471799 Line removable ball valve Sep. 18, 1984
4458878 Ball valve assembly Jul. 10, 1984

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