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Class Information
Number: 137/498
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > Responsive to change in rate of fluid flow > Valve closes in response to excessive flow
Description: Apparatus in which the flow controlling valve is closed in response to an increase in the rate of flow beyond a predetermined maximum.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8701693 Nozzle check valve Apr. 22, 2014
8561639 Flow check valve assembly and method Oct. 22, 2013
8534314 Explosion protection valve Sep. 17, 2013
8408228 Flow control valve for a broken sprinkler Apr. 2, 2013
8408242 Overflow shutoff valve Apr. 2, 2013
8402995 Flow-volume regulator Mar. 26, 2013
8353311 Anti-flooding device Jan. 15, 2013
8327877 Pressure reducing apparatus Dec. 11, 2012
8276611 Externally adjustable pressure compensated flow control valve Oct. 2, 2012
8262057 Flow controlled actuator apparatus for use with self-closing stop valves Sep. 11, 2012
8235066 Automatically tripped compact safety device for controlling the flow of a fluid Aug. 7, 2012
8020582 Excess flow valve Sep. 20, 2011
7997293 Valve apparatus, combination filter valve assemblies and devices, systems, and methods including the same Aug. 16, 2011
7644726 Self-cleaning flow shut off valve Jan. 12, 2010
7591282 Damped, self-cleaning flow shutoff valve and associated methods Sep. 22, 2009
7552743 Self cleaning flow shutoff valve Jun. 30, 2009
7503341 Self cleaning flow shutoff valve and associated methods Mar. 17, 2009
7273062 Shut-off valve for preventing the flow of liquid through a conduit, and related processes Sep. 25, 2007
7231937 Automatic shutoff valve Jun. 19, 2007
7134434 Pressure support system and method and a pressure control valve for use in such a system and method Nov. 14, 2006
6988509 Riser line shutoff valve Jan. 24, 2006
6962165 Automatically-actuated safety device with a double-seated valve to regulate the flow rate of a fluid Nov. 8, 2005
6953052 Fuel system shut-off valve Oct. 11, 2005
6892757 Hydraulic valve May. 17, 2005
6857440 Safety valve Feb. 22, 2005
6789561 Excess-flow valve Sep. 14, 2004
6655259 Full flow mechanical fail safe Dec. 2, 2003
6656254 Full flow mechanical failsafe Dec. 2, 2003
6619309 Exhaust cart excess flow valve with linear actuator Sep. 16, 2003
6443180 Hydraulic line adjustable velocity fuse with damping Sep. 3, 2002
6390199 Downhole safety valve May. 21, 2002
6363963 Excess flow shutoff valve Apr. 2, 2002
6349771 Flow actuated shut-off valve Feb. 26, 2002
6345641 Fluid-activatable device for shut-off under excess flow conditions Feb. 12, 2002
6308730 Gas stream monitor Oct. 30, 2001
6202683 Fluid flow fuse Mar. 20, 2001
6173737 Bidirectional flow control valve Jan. 16, 2001
6167969 Remote control valve Jan. 2, 2001
6123101 Spring body excess flow valve Sep. 26, 2000
6112758 Gas line automatic shut-off assembly Sep. 5, 2000
5921275 Apparatus for reducing noise generated by the flow of water through a water valve Jul. 13, 1999
5868161 Damper valve Feb. 9, 1999
5860448 Oil pressure supply valve for a traction control system Jan. 19, 1999
5799684 Frangible hydraulic fuse Sep. 1, 1998
5709239 Automatic shut-off safety device Jan. 20, 1998
5641271 Float operated pump including diaphragm valve assembly with bleed passage Jun. 24, 1997
5634489 Hydraulic fuse Jun. 3, 1997
5601111 Method for automatically circulating and then halting circulation of wastewater in a wastewater pump station, and a valving device therefore Feb. 11, 1997
5597011 Flow regulator Jan. 28, 1997
5551476 Balanced-flow gas safety valve Sep. 3, 1996

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