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Class Information
Number: 137/493.9
Name: Fluid handling > Line condition change responsive valves > Bi-directional flow valves > Axes of ports co-axial
Description: Apparatus wherein the axis of one valve port is co-axial with that of the second valve port.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8672364 Quick disconnect device for connecting a sprayer tank to a portable pump assembly Mar. 18, 2014
8607825 Non-return valve Dec. 17, 2013
8602053 Valve assembly for a differential pressure sensor with automatic zero point calibration and flushing Dec. 10, 2013
8602054 Valve assembly for a differential pressure sensor with safety valve Dec. 10, 2013
8561637 Vent valve Oct. 22, 2013
8561638 Check valve Oct. 22, 2013
8528591 Micro valve, method for producing a micro valve, as well as micro pump Sep. 10, 2013
8490720 Self aligning mud saver valve seat Jul. 23, 2013
8469089 Process and apparatus to improve reliability of pinpoint stimulation operations Jun. 25, 2013
8459286 Pressure retention valve and integrated valve for tank system Jun. 11, 2013
8381758 Safety relief fill valve assembly Feb. 26, 2013
8375982 Hydraulic circuit and manifold with multifunction valve Feb. 19, 2013
8337470 Three-way valve for power injection in vascular access devices Dec. 25, 2012
8286658 Roll-over valve with shared overfill protection and vacuum relief Oct. 16, 2012
8240329 Fluid control valve Aug. 14, 2012
8225811 Apparatus for the removal of moisture from a compressed air tank Jul. 24, 2012
8191570 Bi-directional flapper valve Jun. 5, 2012
8171953 Tank pressure and vacuum relief device May. 8, 2012
8132558 Common rail fuel pump with combined discharge and overpressure relief valves Mar. 13, 2012
8127910 Latching frictional engagement assembly using a check valve Mar. 6, 2012
7997296 Air valve device Aug. 16, 2011
7931452 Suction throttle valve of a compressor Apr. 26, 2011
RE41861 Decoupled check-relief valve Oct. 26, 2010
7743787 Mud saver valve with magnetic latching Jun. 29, 2010
7574860 Damper valve and hydraulic power steering apparatus Aug. 18, 2009
7530469 Valve device having two membranes for a drinking container May. 12, 2009
7527070 Flow control valve and method May. 5, 2009
7481320 Filter device having a bi-directional valve Jan. 27, 2009
7438081 Valve for an inflatable and method of use Oct. 21, 2008
7401623 Double-acting valve unit Jul. 22, 2008
7392823 Combination valve Jul. 1, 2008
7389791 Backflow preventer Jun. 24, 2008
7363940 Flow-rate restrictor insert for orifice expansion device Apr. 29, 2008
7360556 Check valve Apr. 22, 2008
7343927 Blocking element, especially an explosion protection valve Mar. 18, 2008
7318592 Motorcycle steering damper Jan. 15, 2008
7302966 Flow control valve and method Dec. 4, 2007
7243676 Combination umbrella and inverted bi-directional valve Jul. 17, 2007
7240676 Tracheotomy valve unit Jul. 10, 2007
7204268 Internal pressure equilibrium device for airtight space Apr. 17, 2007
7201183 Valve arrangement in a hydraulic circuit, use of the same and arrangement for controlling a hydraulic vehicle drive Apr. 10, 2007
7171977 Combination pressure relief and topping valve Feb. 6, 2007
7159606 Reservoir for a lubricant pump Jan. 9, 2007
7121267 Poppet for an integrated pressure management apparatus and fuel system and method of minimizing resonance Oct. 17, 2006
7096883 Combined check/pressure control valve Aug. 29, 2006
7086413 Bi-directional damper valve for a hydraulic line, power steering system incorporating the damper valve, and methods of using same Aug. 8, 2006
7086388 Combination valve for fuel system Aug. 8, 2006
7066199 Valve assembly Jun. 27, 2006
7011077 Fuel system and method for managing fuel vapor pressure with a flow-through diaphragm Mar. 14, 2006
6986363 Valve assembly for use in a hydraulic component Jan. 17, 2006

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