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Class Information
Number: 137/315.33
Name: Fluid handling > With repair, tapping, assembly, or disassembly means > Assembling or disassembling check valve
Description: Subject matter comprising flow regulating means which automatically limits the fluid flow to a single direction and is sensitive to the fluid pressure.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8662101 Device for inserting a shut-off device in a pipeline Mar. 4, 2014
8567431 Check valve Oct. 29, 2013
8523541 Plastic element, piston pump, and assembly method Sep. 3, 2013
8517045 Automatic fluid flow control device Aug. 27, 2013
8444398 Pump manifold support May. 21, 2013
8347911 Vacuum relief valve and method for assembling the same Jan. 8, 2013
8342824 Piston compressor, particularly refrigerant compressor Jan. 1, 2013
8235066 Automatically tripped compact safety device for controlling the flow of a fluid Aug. 7, 2012
8230875 Check valve Jul. 31, 2012
7954510 Pump valve retainer Jun. 7, 2011
7784483 Backflow preventer Aug. 31, 2010
7757706 Backwater valve assembly with removable valve member Jul. 20, 2010
7681589 Pump valve retainer Mar. 23, 2010
7624748 Valve Dec. 1, 2009
7461515 Sequential hot gas defrost method and apparatus Dec. 9, 2008
7395836 Screwable check valve Jul. 8, 2008
7392819 Method of setting the ball travel of a valve-lash-adjusting element Jul. 1, 2008
7350534 Hollow ball valve assembly Apr. 1, 2008
7337796 Safety relief valve having a low blow-down value and spring therefore Mar. 4, 2008
7311119 Valve apparatus Dec. 25, 2007
7311118 Floating ball check valve Dec. 25, 2007
7290554 Embedded microfluidic check-valve Nov. 6, 2007
7290555 Embedded microfluidic check-valve Nov. 6, 2007
7044164 Flap-type vehicle cabin exhauster May. 16, 2006
7036756 Anti-sputter fluid flow control apparatus for paint sprayers May. 2, 2006
7032608 Microfluidic check-valve embedded in LCP Apr. 25, 2006
7021331 Check valve with locked restraint mechanism Apr. 4, 2006
7011103 Vacuum relief assembly for I.C. engine intakes Mar. 14, 2006
6981512 Tubular flow conduit with in-line integrated check valve and method of making same Jan. 3, 2006
6948513 Integral check valve for nozzles Sep. 27, 2005
6929023 Back flow prevention device for pipelines conveying fluids Aug. 16, 2005
6913450 Suction valve coupling structure for reciprocating compressor Jul. 5, 2005
6910494 Composite component, in particular valve, and method for the production thereof Jun. 28, 2005
6848467 Non-metallic, snap-together subsasembly of internal double check valve Feb. 1, 2005
6802701 Suction valve assembly of compressor Oct. 12, 2004
6792968 Pump assembly and method Sep. 21, 2004
6761182 Method for configuration of a valve Jul. 13, 2004
6749407 Method of installing valves in a micro-pump Jun. 15, 2004
6694996 Swing check backflow preventor having check valve with lever arm Feb. 24, 2004
6622751 Pressure valve for a reciprocating pump Sep. 23, 2003
6546946 Short-length reduced-pressure backflow preventor Apr. 15, 2003
6513543 Backflow preventer valve Feb. 4, 2003
6470911 Check valve and fuel tank with check valve attached thereto Oct. 29, 2002
6427711 Inline check valve Aug. 6, 2002
6360766 Check valve with an integral breakaway retainer Mar. 26, 2002
6223765 Casing construction for fuel dispensing systems May. 1, 2001
6199576 Bi-directional cleanout with backflow preventer Mar. 13, 2001
6029684 Sewer inspection chamber with back-flow prevention valve Feb. 29, 2000
6004118 Valve polarization means, for a fluid-working machine structure Dec. 21, 1999
5699859 Well water recirculation valve and method of manufacturing thereof Dec. 23, 1997

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