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Class Information
Number: 137/625.2
Name: Fluid handling > Systems > Multi-way valve unit > Supply and exhaust
Description: Devices comprising a flow line controlled by a valve unit which has a passage connectible between atmosphere and the downstream portion of the line, whereby that portion may be completely drained or fluid therein may escape to waste.

Sub-classes under this class:

Class Number Class Name Patents
137/625.65 Motor-operated 730
137/625.6 Pilot-actuated 125
137/625.25 Reciprocating valve 109
137/625.21 Rotary valve 228

Patents under this class:

Patent Number Title Of Patent Date Issued
8434773 Lift axle control valve May. 7, 2013
8291944 Hydrogen filling method and station Oct. 23, 2012
8231818 Pressure control valve assembly Jul. 31, 2012
7484528 Valve Feb. 3, 2009
7306462 Gas operating system for firearm simulators Dec. 11, 2007
7037087 Capacity control valve and control method therefor May. 2, 2006
6520208 Fluidic device Feb. 18, 2003
6269839 Control member for a valve and method for determining fluid flow rate through a valve Aug. 7, 2001
5609124 Hot water tank cleaning device Mar. 11, 1997
5591086 Toy motion simulator and hydraulic control valve for use therein Jan. 7, 1997
5499650 Fluid control valve for a hydraulic system operating with variable viscosity, contaminated, fluid Mar. 19, 1996
5135369 Device with orbiting valve having a seal piston Aug. 4, 1992
5133386 Balanced, pressure-flow-compensated, single-stage servovalve Jul. 28, 1992
5108473 Dust collector with atmospheric backflush Apr. 28, 1992
4924926 Central tire inflation system May. 15, 1990
4917585 Gerotor motor or pump having sealing rings in commutator members Apr. 17, 1990
4877383 Device having a sealed control opening and an orbiting valve Oct. 31, 1989
4773439 Changeover valve Sep. 27, 1988
4767294 Power conversion device Aug. 30, 1988
4754792 Tire valve assembly for central tire inflation system Jul. 5, 1988
4715405 Solenoid valve, particularly for apparatus for removing a milking set Dec. 29, 1987
4672989 Flow conditioned nutation valving apparatus and method of operation Jun. 16, 1987
4665947 Transfer switch for differential type actuators May. 19, 1987
4640331 Central tire inflation system Feb. 3, 1987
4597403 Nutation valving apparatus and method of operation Jul. 1, 1986
4545563 Pressure regulator valve Oct. 8, 1985
4522233 Multi-position plug valve Jun. 11, 1985
4466460 Valve apparatus with improved means to prevent cross-venting Aug. 21, 1984
4449898 Power transmission May. 22, 1984
4411190 Energy translation device having individually compensated sliding valves and counterbalancing mechanism Oct. 25, 1983
4381050 Vacuum modulator arrangement for an automatic transmission Apr. 26, 1983
4333390 Balanced pivoted vane valve Jun. 8, 1982
4289126 Pressure regulator for breathing apparatus Sep. 15, 1981
4126153 Combined electrical switch and fluid power control device Nov. 21, 1978
4057078 Vacuum slide valve Nov. 8, 1977
3942555 Electrical switch and fluid control device Mar. 9, 1976

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