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Class Information
Number: 137/601.21
Name: Fluid handling > Systems > Dividing into parallel flow paths with recombining > Having direct response valve (e.g., check valve, etc.) > With reverse flow direction
Description: Subject matter wherein the direct response valve is provided with means causing the stream of fluid to turn completely in opposite path.










Patents under this class:

Patent Number Title Of Patent Date Issued
8579251 Solenoid valve Nov. 12, 2013
8424567 Bi-directional valve with cavity pressure relief Apr. 23, 2013
7757711 Flow controller Jul. 20, 2010
7639151 Liquid blocking apparatus and system equipped with an alarm or wireless calling device and a storing bag Dec. 29, 2009
7628174 Hydraulic control arrangement Dec. 8, 2009
7441563 Thermostatic expansion valve with check valve Oct. 28, 2008
7293435 Hydraulic distributor for a washing machine Nov. 13, 2007
6871666 Bi-directional dual chamber orifice fitting Mar. 29, 2005
6691729 Valve assembly Feb. 17, 2004
6481452 High pressure, high flow pump prime valve Nov. 19, 2002
6382250 Solenoid valve with a check valve May. 7, 2002
6296015 Speed controller with pilot check valve Oct. 2, 2001
6296013 Pressure/flow rate control valve Oct. 2, 2001
6289930 Refrigerant expansion device having combined piston orifice valve and solenoid-actuated closure Sep. 18, 2001
6227231 Pressure/flow rate control valve May. 8, 2001
6158463 Valve arrangement, in particular electromagnetic valve arrangement for slip-controlled motor vehicle brake systems Dec. 12, 2000
6131610 Speed controller with pilot check valve Oct. 17, 2000
4936032 Safety valve for hydraulic receiver and hydraulic circuit comprising same Jun. 26, 1990
4657040 Bypass reverse flow valve Apr. 14, 1987
4495965 Flow regulating valve Jan. 29, 1985
4381797 Flow control valve with a non-rising stem May. 3, 1983
4271864 Pressure regulating valve Jun. 9, 1981
4262695 Flow rate control valve Apr. 21, 1981
4192346 Control valve Mar. 11, 1980
4177840 Pressure regulation and flow control valve with combination needle and check valves Dec. 11, 1979
4171007 Unidirectional flow limiter Oct. 16, 1979
4164959 Metering valve Aug. 21, 1979
4147179 Pressure governor valve equipped with flow control valve Apr. 3, 1979











 
 
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