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Class Information
Number: 137/625.32
Name: Fluid handling > Systems > Multi-way valve unit > Dividing into parallel flow paths with recombining > Rotary > Plug
Description: Devices in which the valve unit is a rotary plug.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8556226 Valve with the device enhancing capability of its closure member and related seat ring to resist erosion Oct. 15, 2013
8297305 Valve assembly having an improved flow path Oct. 30, 2012
8171958 Integrated plug/choke valve May. 8, 2012
8146884 High pressure control valve that allows for multiple pressure drops Apr. 3, 2012
8100144 Mounting arrangement for a rotary valve Jan. 24, 2012
7967005 Dual fuel gas valve and gas grill Jun. 28, 2011
7837771 Rotary cylinder dual diverter valve Nov. 23, 2010
7802589 Multirate tubing flow control valve Sep. 28, 2010
7717061 Gas switching mechanism for plasma processing apparatus May. 18, 2010
7690396 Multirate tubing flow restrictor Apr. 6, 2010
7458386 Manual gas valve with natural/LP gas conversion capability Dec. 2, 2008
7360611 Flow system for a hydraulic choke solids strainer Apr. 22, 2008
7322375 High bandwidth rotary servo valves Jan. 29, 2008
7278448 Rotary ball valve assembly Oct. 9, 2007
7275606 Solids strainer system for a hydraulic choke Oct. 2, 2007
7234488 Valve assembly and method with slotted plates and spherical ball plug Jun. 26, 2007
7178782 Quiet opening ball valve Feb. 20, 2007
7156122 Rotary ball valve assembly Jan. 2, 2007
7143782 Pressure regulator module for controlling a gas Dec. 5, 2006
7117894 Ball valve with high damping of the noise due to fluid passage Oct. 10, 2006
7011109 Drag ball valve Mar. 14, 2006
6983925 Rotary barrel gate valve Jan. 10, 2006
6974116 Rotary ball valve assembly Dec. 13, 2005
6923210 Rotary drag valve Aug. 2, 2005
6874486 Supercharger with multiple backflow ports for noise control Apr. 5, 2005
6868865 Rotary drag valve Mar. 22, 2005
6834675 Integrated multipurpose caged valve Dec. 28, 2004
6810664 Slotted spool valve Nov. 2, 2004
6675832 Blowdown valve Jan. 13, 2004
6651697 Fitting, especially a tap cock Nov. 25, 2003
6540206 Bidirectional ball valve particularly for ecological frigorific gases Apr. 1, 2003
6527194 Flow control damper Mar. 4, 2003
6273133 Fluid flow rate switching device Aug. 14, 2001
6240959 Hydraulic safety fuse device Jun. 5, 2001
6085787 Control valve Jul. 11, 2000
6029702 Valve with internal diffuser Feb. 29, 2000
6024125 Rotary valve Feb. 15, 2000
6021812 Ball plug valve Feb. 8, 2000
5957377 Flow control valve and hot-water type heater apparatus employing the same Sep. 28, 1999
5950664 Valve with improved combination bearing support and seal Sep. 14, 1999
5937901 Rotary noise attenuating valve Aug. 17, 1999
5890505 Low noise ball valve assembly with downstream airfoil insert Apr. 6, 1999
5799695 Flow regulating valve of the ball or plug type Sep. 1, 1998
5771929 Low noise ball valve assembly with airfoil insert Jun. 30, 1998
5765588 Fluid flow control device particularly useful as a pressure regulator Jun. 16, 1998
5758689 Control valve with partial flow diffuser Jun. 2, 1998
5687755 Equipment comprising a condensate trap Nov. 18, 1997
5685338 Shut-off device Nov. 11, 1997
5680889 Low noise ball valve assembly Oct. 28, 1997
5674461 Exhaust device Oct. 7, 1997

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