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Class Information
Number: 137/505.13
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > With opening bias (e.g., pressure regulator) > Senses inlet pressure
Description: Devices in which the fluid reactor surface, in communication with tie inlet side of the valve, responds to changes in inlet fluid pressure.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8701458 On-demand gas regulator for gas analyzer calibration Apr. 22, 2014
8701697 Pneumatic system Apr. 22, 2014
8689823 Hydro-pneumatic system with pressure limiting valve Apr. 8, 2014
8550112 Multifunctional safety valve device with incorporated proportional pressure regulator Oct. 8, 2013
8490647 Fluid pressure control device Jul. 23, 2013
8469052 Control valve Jun. 25, 2013
8439069 Air release valve May. 14, 2013
8439282 Low flow irrigation emitter May. 14, 2013
8424560 Multi-valve microfluidic devices and methods Apr. 23, 2013
8375983 Multi-stage fluid regulators Feb. 19, 2013
8336850 Stop valve Dec. 25, 2012
8336575 Fluid pressure control device Dec. 25, 2012
8291932 Valve means Oct. 23, 2012
7992587 Microfluidic autoregulator devices and arrays for operation with newtonian fluids Aug. 9, 2011
7617841 Pressure-dependent check valve and hydraulic system equipped therewith Nov. 17, 2009
7398793 Rapidly opening pressure regulating valve, fire extinguishing apparatus using the same, high-pressure gas cylinder apparatus and apparatus for rapidly supplying fluid Jul. 15, 2008
7255127 Vacuum regulator and intermittent flow device Aug. 14, 2007
7255126 Sanitary liquid pressure regulator Aug. 14, 2007
7182857 Pressure limiting and/or flow regulating valve for use with POU/POE filter system Feb. 27, 2007
7118358 Scroll compressor having a back-pressure chamber control valve Oct. 10, 2006
7013916 Sub-atmospheric gas delivery method and apparatus Mar. 21, 2006
6929026 Sanitary liquid pressure regulator Aug. 16, 2005
6840269 Pressure reducer for a fluid sampling device Jan. 11, 2005
6722388 Multiple pressure regulator Apr. 20, 2004
6357838 Mechanical oil pressure control apparatus for antilock brake system Mar. 19, 2002
6321772 Vacuum pressure-adjusting apparatus Nov. 27, 2001
6276392 Liquid pressure regulator Aug. 21, 2001
6240951 Inflation system and valve for use therein Jun. 5, 2001
6227238 Valve providing pressure differential proportional to downstream pressure May. 8, 2001
6209578 Constant flow valve Apr. 3, 2001
6050973 Pressure limiting device Apr. 18, 2000
6026850 Pressure regulating valve Feb. 22, 2000
5975128 Shut-off or throttle valve with pivotal flap Nov. 2, 1999
5950671 Over-pressure protection of a fluid sensor Sep. 14, 1999
5860448 Oil pressure supply valve for a traction control system Jan. 19, 1999
5799688 Automatic flow control valve Sep. 1, 1998
5746245 Meters May. 5, 1998
5738136 Pulsator device and method Apr. 14, 1998
5722454 Fluid flow fuse Mar. 3, 1998
5694977 High pressure enabled, low pressure activated automatic fluid control valve Dec. 9, 1997
5660200 Double-valved variable pressure device for hydrocephaly Aug. 26, 1997
5630935 Pressure relief valve with sample removal port May. 20, 1997
5620023 Exhaust-control valve for an electromagnetic pump Apr. 15, 1997
5597012 Valve with a threshold with retractable push rod Jan. 28, 1997
5456282 Pressure reducing regulator Oct. 10, 1995
5423344 Gas blanketed liquid storage system, gas pressure regulation device, counterspring regulator and process for gas blanketing a liquid storage vessel Jun. 13, 1995
5362026 Water flow control system Nov. 8, 1994
5341839 Water flow control system Aug. 30, 1994
5241985 Flow control valve system Sep. 7, 1993
5161372 Exhaust gas cooling valve Nov. 10, 1992

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