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Class Information
Number: 137/625.49
Name: Fluid handling > Systems > Multi-way valve unit > Reciprocating valve unit > Combined disk or plug and gate or piston
Description: Devices wherein the valve unit comprises a disk or plug for closing one port and a gate or piston for closing another.










Patents under this class:

Patent Number Title Of Patent Date Issued
8522887 Aquifier flow controlling valve assembly and method Sep. 3, 2013
7721973 Valve May. 25, 2010
7543603 Three-way, two-position in-tube solenoid gas valve assembly Jun. 9, 2009
7493914 Newtonian thrust cowl array Feb. 24, 2009
6935354 Permeable gas assembly for gas delivery Aug. 30, 2005
6810911 Four-way switching valve Nov. 2, 2004
5996606 Four-port valve and three-way valve Dec. 7, 1999
5685340 Metering valve Nov. 11, 1997
5351717 High differential pressure control valve Oct. 4, 1994
5233910 Pressure holding valve Aug. 10, 1993
4962791 Seat valve Oct. 16, 1990
4941507 Water pressure-sealing faucet without water hammer effect Jul. 17, 1990
4844553 Dash control valve with differential trip Jul. 4, 1989
4781702 Three-way connector for liquid exchange Nov. 1, 1988
4691737 Brake control valve Sep. 8, 1987
4662398 Control valve for a steam box May. 5, 1987
4644969 Water control valve with pneumatic actuator Feb. 24, 1987
4593715 Hydraulic controllable two-port valve for a liquid stream Jun. 10, 1986
4510970 Dual seal in-line test valve Apr. 16, 1985
4195774 Dual in-line valve construction Apr. 1, 1980
4193422 Annular flow diverter valve Mar. 18, 1980
4175588 Air pressure brake arrangement for tractor and semi-trailer combinations Nov. 27, 1979
4036255 Vapor recovery adapter Jul. 19, 1977
3994530 Engine exhaust diverter valve Nov. 30, 1976











 
 
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