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Class Information
Number: 137/513
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Plural > Mechanically interconnected
Description: Apparatus in which there is a mechanical interconnection between two of the valves such that the movement of one valve relative to its seat in response to variation in the line condition is transmitted to the other thereby to move it relative to its seat.










Patents under this class:

Patent Number Title Of Patent Date Issued
8656946 Valves Feb. 25, 2014
8631820 Hydraulic control valve for construction machinery Jan. 21, 2014
8622082 Check valve and method and apparatus for extending life of check valves Jan. 7, 2014
8353311 Anti-flooding device Jan. 15, 2013
8327869 Ball check valve assembly for hydraulic control circuit Dec. 11, 2012
8297300 Anti-backflow vacuum breaker valve Oct. 30, 2012
8191575 Double poppet quick connect Jun. 5, 2012
8136546 Pressure relief valve Mar. 20, 2012
7591291 Refueling assembly having a check valve receptacle and a replaceable fuel receiver for bottom-filled fuel tanks Sep. 22, 2009
7234486 Pressure limiting valve for fuel injection devices Jun. 26, 2007
6748965 Double directional check valve and flow restrictor combination Jun. 15, 2004
6659735 Scroll compressor Dec. 9, 2003
6394219 Hydraulic power steering system with a pressure relief valve May. 28, 2002
6367501 Anti-geyser shut-off valve assembly Apr. 9, 2002
6237623 Nonsurgical intraurethral bladder control device May. 29, 2001
6039072 Safety valve arrangement Mar. 21, 2000
5941270 Butterfly type two-way check valve for an automatic transmission Aug. 24, 1999
5931191 Flow control valve for passing two fluids in opposite directions Aug. 3, 1999
5836349 Bidirectional flow control device Nov. 17, 1998
5732737 Conforce valve Mar. 31, 1998
5707283 Dual baffle system in automatic air inlets for livestock facilities Jan. 13, 1998
5465752 Multi-function valve for a riser in a sprinkler system Nov. 14, 1995
5129414 Expansible chamber device having variably restrained valve systems Jul. 14, 1992
5111843 Expansible chamber device having variably restrained valve systems May. 12, 1992
5004009 Valve device for controlling liquid flow Apr. 2, 1991
4947672 Hydraulic compression tool having an improved relief and release valve Aug. 14, 1990
4850392 Double poppet relief valve Jul. 25, 1989
4484597 Homogenizer device, in particular for the production of whipped cream Nov. 27, 1984
4354762 Emulsifying assembly Oct. 19, 1982
4321942 Backflow preventer valve Mar. 30, 1982
4249568 Backflow preventer valve Feb. 10, 1981
4248265 Adjustable relief valve Feb. 3, 1981
4184510 Valued device for controlling vacuum in surgery Jan. 22, 1980
4046163 Relief valve Sep. 6, 1977
4015623 Tire valve with pressure release means Apr. 5, 1977
4005726 Thermomagnetic valve Feb. 1, 1977
3974848 Three pot two way check valve Aug. 17, 1976
3934604 Proportioning apparatus Jan. 27, 1976











 
 
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