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Class Information
Number: 137/543.13
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Reciprocating valves > Spring biased > Spring coaxial with valve > Spring abuts removable valve stem guide
Description: Valves wherein the head and spring are on the same side of the seat and the spring abuts a removable guide for the valve stem.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8220483 Non-return valve Jul. 17, 2012
8171954 Reclosable vacuum-tight pressure-relief device having a deformable seal member May. 8, 2012
8147225 Pump valve having a limiting element Apr. 3, 2012
8047227 Pressure limiting valve Nov. 1, 2011
8020582 Excess flow valve Sep. 20, 2011
7954510 Pump valve retainer Jun. 7, 2011
7766036 Discharge valve and valve assembly of reciprocating compressor having the same Aug. 3, 2010
7681589 Pump valve retainer Mar. 23, 2010
7673651 Flow regulating device Mar. 9, 2010
7191796 Dual outlet air valve Mar. 20, 2007
7178784 Valve assembly and method Feb. 20, 2007
7017563 Valve for controlling a fluid flow Mar. 28, 2006
6971405 Check valve for fuel pump Dec. 6, 2005
6899312 Pressure relief valve for flowing media May. 31, 2005
6868772 Fluid control valve Mar. 22, 2005
6394770 Piston pump May. 28, 2002
6234194 Valve May. 22, 2001
6152171 Check valve Nov. 28, 2000
6142037 Transmission check valve Nov. 7, 2000
6117312 Filter bypass valve having adjustable spring biasing force Sep. 12, 2000
5758682 Safety shut off valve Jun. 2, 1998
5725019 Pressure retaining valve Mar. 10, 1998
5636659 Variable area compensation valve Jun. 10, 1997
5482080 Check valve Jan. 9, 1996
5455772 Method of and apparatus for testing an engine or a compressor Oct. 3, 1995
5425397 In line oral inflation valve Jun. 20, 1995
5415303 Railcar cushion unit May. 16, 1995
5362266 Flushmaster fresh water flushing system Nov. 8, 1994
5230471 Pressure washer Jul. 27, 1993
5190072 Relief valve assembly for recyclable pressure vessels Mar. 2, 1993
5127437 Valve Jul. 7, 1992
5062452 Valve member and method of making such a member Nov. 5, 1991
4958742 Container with safety valve Sep. 25, 1990
4949751 Compression release retarder with valve motion modifier Aug. 21, 1990
4872481 Poppet valve flow seat Oct. 10, 1989
4860995 Valve element for use in pumps for handling fluids containing abrasive materials Aug. 29, 1989
4827968 Check valve for an electromagnetic fluid pump having a dual valve seat May. 9, 1989
4768933 High pressure reciprocating pump and valve assembly therefor Sep. 6, 1988
4766927 Abrasive fluid control valve with plastic seat Aug. 30, 1988
4705076 Manifold fitting for a compressed air tank Nov. 10, 1987
4644972 Floating seal valve assembly Feb. 24, 1987
4622994 Fluid handling device Nov. 18, 1986
4518010 Pressure container for two hydraulic circuits May. 21, 1985
4515179 Pressure relief valve with adjustment for set pressure May. 7, 1985
4485844 Back pressure inducer Dec. 4, 1984
4453561 Check valve assembly for use in backflow preventers or the like Jun. 12, 1984
4452272 Check valve Jun. 5, 1984
4437492 Poppet check valve Mar. 20, 1984
4432389 Reseat relief valve Feb. 21, 1984
4368756 Check valve Jan. 18, 1983

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