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Class Information
Number: 137/501
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > Responsive to change in rate of fluid flow > Expansible chamber subject to differential pressures > Pressures across fixed choke
Description: Apparatus in which the pressures to which the movable reaction member is subject are taken on opposite sides of a fixed choke or flow restrictor placed in the flow line.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8662097 Flow control valve with damping chamber Mar. 4, 2014
8579627 Method and a device for controlling the feed of a combustible gas to a burner apparatus Nov. 12, 2013
8469052 Control valve Jun. 25, 2013
8469053 Flow control valve Jun. 25, 2013
8424556 Valve with a delta P-function and flow limiting function Apr. 23, 2013
8381762 Flow regulator Feb. 26, 2013
8297306 Fluid regulator Oct. 30, 2012
8297264 Adaptive pressure control valve with variable switching point Oct. 30, 2012
8276611 Externally adjustable pressure compensated flow control valve Oct. 2, 2012
8011290 Apparatus for preparing a beverage suitable for consumption, such as coffee Sep. 6, 2011
7775237 Fluid flow control regulator Aug. 17, 2010
7775242 Solid state regulator for natural gas Aug. 17, 2010
7770595 Flow control valve Aug. 10, 2010
7735514 Apparatus for regulating flow of a medium in a heating and cooling system Jun. 15, 2010
7451781 Pressure independent control valve Nov. 18, 2008
7415921 Apparatus for preparing a beverage suitable for consumption, such as coffee Aug. 26, 2008
7140404 Integral in tank vent construction for pressure based level monitors Nov. 28, 2006
7128086 Flow control valves Oct. 31, 2006
7013913 Flow control valve Mar. 21, 2006
6966329 Proportional pilot-operated flow control valve Nov. 22, 2005
6932107 Flow control valves Aug. 23, 2005
6895995 Liquid flow regulator May. 24, 2005
6827100 Pressure independent control valve Dec. 7, 2004
6805156 Constant flow valve and constant flow mixing method Oct. 19, 2004
6729346 Pneumatic valve May. 4, 2004
6725880 Constant flow control valve Apr. 27, 2004
6688319 Flow regulating control valve and method for regulating fluid flow Feb. 10, 2004
6662823 Auto flow regulator Dec. 16, 2003
6598618 Flow regulator Jul. 29, 2003
6467501 Fluid flow controller having axial needle valve for adjusting the flow rate Oct. 22, 2002
6461104 Flow regulator for a water pump Oct. 8, 2002
6314980 Pressure compensator flow control Nov. 13, 2001
6276491 Regulator for adjusting the fluid flow in a hydrostatic or aerostatic device Aug. 21, 2001
6273126 Flow regulator for water pump Aug. 14, 2001
6263905 Automatic regulating valve apparatus Jul. 24, 2001
6254576 Pressure-responsive flow regulator and drug delivery devices employing the same Jul. 3, 2001
6230734 Flow-rate controller May. 15, 2001
6220281 Regulator for use with apparatus having a hydrostatic or aerostatic pocket Apr. 24, 2001
6189564 Metering valve Feb. 20, 2001
6167904 Hydraulic valve Jan. 2, 2001
6167906 Bi-directional flow control valve Jan. 2, 2001
6164321 Liquid flow regulator for use in infusion sets Dec. 26, 2000
6110427 Flow regulator to maintain controllable volumetric flow rate Aug. 29, 2000
6076548 Regulator for use with apparatus having a hydrostatic or aerostatic pocket Jun. 20, 2000
6068021 Directional control valve May. 30, 2000
6062257 Flow control valve with integrated pressure controller May. 16, 2000
6026849 High pressure regulated flow controller Feb. 22, 2000
5996615 Flow-control valve Dec. 7, 1999
5988211 I.V. flow controller Nov. 23, 1999
5983926 Flow control valve Nov. 16, 1999

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