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Class Information
Number: 137/614.17
Name: Fluid handling > Systems > Flow path with serial valves and/or closures > One valve head provides seat for other head > Also carries head of other valve
Description: Systems in which a valve comprising a head and seat is carried by and movable with the head of another valve.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8689828 Hydraulic coupling member with pressure-relieving poppet valve Apr. 8, 2014
8678033 Proportional valve employing simultaneous and hybrid actuation Mar. 25, 2014
8636021 Non-magnetic latching servo actuated valve Jan. 28, 2014
8596298 Piping system for process plants in the food and beverage industry Dec. 3, 2013
8584705 Bidirectional sleeved/plug ball check valve Nov. 19, 2013
8327881 Double seat valve apparatus Dec. 11, 2012
8220488 Flow control valve with internal isolation means Jul. 17, 2012
8191577 Flow adjustment valve Jun. 5, 2012
7954511 Two-stage valve for controlling fluids Jun. 7, 2011
7950411 Pipe branching arrangement May. 31, 2011
7699069 Valve status monitoring Apr. 20, 2010
7694692 Non-magnetic latching servo actuated valve Apr. 13, 2010
7640735 Auxiliary pump for hydrostatic transmission Jan. 5, 2010
7560021 Selector valve of a pressure filter for aquariums or ponds Jul. 14, 2009
7530368 Valve device and valve disk for a valve device May. 12, 2009
7325569 Butterfly valve with integral split flapper relief valve Feb. 5, 2008
7320336 Plug incorporating pressure-sensitive valve Jan. 22, 2008
7278448 Rotary ball valve assembly Oct. 9, 2007
7270149 Rotary valve assembly Sep. 18, 2007
7198058 Device for actuating double seat valves Apr. 3, 2007
7191791 Device for actuating double seat valves Mar. 20, 2007
7178544 Combination shut-off and resetable excess flow valve Feb. 20, 2007
7121298 Reducer valve for pressurized gas Oct. 17, 2006
6901962 Surge prevention device Jun. 7, 2005
6889731 Compressed-gas canister for a fastening appliance and adapter cap for fitting an intermediate seal May. 10, 2005
6814101 Excessive flow valve Nov. 9, 2004
6655410 Multi-way hydraulic distributor with an interception unit Dec. 2, 2003
6581623 Auto-switching gas delivery system utilizing sub-atmospheric pressure gas supply vessels Jun. 24, 2003
6467515 Gas container Oct. 22, 2002
6328052 Bidirectional check valve Dec. 11, 2001
6269840 Valve-in-valve body, vent port and method Aug. 7, 2001
6167908 Valve assembly for an apparatus under pressure Jan. 2, 2001
6164269 Exhaust gas recirculation valve assembly having an integrated check valve Dec. 26, 2000
6142185 Valve block Nov. 7, 2000
6131611 Cartridge or mechanism for a sequential mixing valve Oct. 17, 2000
6098659 Combined directional and flow control valve Aug. 8, 2000
6098645 Leak resistant, switching, double valve system Aug. 8, 2000
6021952 Combination check valve, shutoff and seal for thermostatic valve Feb. 8, 2000
6009896 Shut-off valve Jan. 4, 2000
6003550 Combination shut off valve and excessive flow valve Dec. 21, 1999
5996687 Full bore variable flow control device Dec. 7, 1999
5931375 Valve for a system having an energy-carrying medium Aug. 3, 1999
5775363 Double seat valve with a controlled leakage cavity Jul. 7, 1998
5699825 Double seat flow control valve Dec. 23, 1997
5690142 Variable orifice ball value Nov. 25, 1997
5669426 Dispensing device Sep. 23, 1997
5632299 Water and steam mixing device May. 27, 1997
5586579 Combination ball valve and pressure relief valve assembly Dec. 24, 1996
5575305 Procedure for cleaning a double seat valve and valve arrangement for implementing the process Nov. 19, 1996
5549135 Ball Valve Aug. 27, 1996

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