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Class Information
Number: 137/625
Name: Fluid handling > Systems > Multi-way valve unit
Description: Subject matter in which a single valve controlling communication with three or more flow lines, has its actuator or actuator so arranged or related as to determine or aid in the determination of the relative order, duration or magnitude of flow through each of the several flow lines.










Sub-classes under this class:

Class Number Class Name Patents
137/625.28 Dividing into parallel flow paths with recombining 73
137/625.43 Four port reversing valves 141
137/625.4 Multiple inlet with single outlet 395
137/625.44 Pivoted valve unit 142
137/625.18 Plural noncommunicating flow paths 90
137/625.48 Reciprocating valve unit 290
137/625.46 Rotary valve unit 361
137/625.42 Selective opening of plural ports 33
137/625.17 Selective reciprocation or rotation 330
137/625.11 Sequential distributor or collector type 233
137/625.12 Sequentially progressive opening or closing of plural ports 45
137/625.2 Supply and exhaust 36


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8671985 Control valve assembly Mar. 18, 2014
8500999 System for water treatment regeneration stage Aug. 6, 2013
8485361 Large container for handling and transporting high-purity and ultra high purity chemicals Jul. 16, 2013
8479771 Diverter valve Jul. 9, 2013
8434512 Rotating disc diluter for fluid flows May. 7, 2013
8413621 Hydraulic assembly for a cylinder head of an internal combustion engine comprising a hydraulically variable gas exchange valve train Apr. 9, 2013
8241179 Hydraulic control apparatus of continuously variable transmission of hybrid vehicle Aug. 14, 2012
8235068 Substrate processing systems and related methods Aug. 7, 2012
8231818 Pressure control valve assembly Jul. 31, 2012
8220427 VCT active lock pin control Jul. 17, 2012
8215271 Hydraulic unit for a cylinder head of an internal combustion engine with hydraulically variable gas-exchange valve train Jul. 10, 2012
8210140 Hydraulic unit for a cylinder head of an internal combustion engine with hydraulically variable gas-exchange valve train Jul. 3, 2012
8210203 Aspirator for a shower fitting Jul. 3, 2012
8192251 Pressure control system of wafer polishing apparatus Jun. 5, 2012
8171900 Engine including hydraulically actuated valvetrain and method of valve overlap control May. 8, 2012
8151900 Percussion equipment driven by a pressurized incompressible fluid Apr. 10, 2012
8075520 Arthroscopic fluid control device and method for controlling fluid flow in arthroscopic procedures Dec. 13, 2011
8056515 Method and device for the operation of a valve of the combustion chamber of a combustion engine, and a combustion engine Nov. 15, 2011
8033956 Hydraulic control unit Oct. 11, 2011
8011920 Valve assemblies for heating devices Sep. 6, 2011
7963951 Medical valve device Jun. 21, 2011
7926454 Method of generating pressure pulses, a pressure pulse generator and a piston engine provided therewith Apr. 19, 2011
7878217 Valve device for sanitary fitting and sanitary fitting Feb. 1, 2011
7866286 Method for valve seating control for an electro-hydraulic engine valve Jan. 11, 2011
7849825 Control valve for a device for changing the control times of an internal combustion engine Dec. 14, 2010
7850088 Thermostatic water mixing valve Dec. 14, 2010
7841310 Spool valve for VCT locking pin release mechanism Nov. 30, 2010
7828245 Dual motor dual concentric valve Nov. 9, 2010
7823549 Switchable valvetrain system and method of operation Nov. 2, 2010
7741121 System for purification and analysis of radiochemical products yielded by microfluidic synthesis devices Jun. 22, 2010
7695445 Three-way stopcock, and liquid transfusion circuit or blood transfusion circuit either using the three-way stopcock Apr. 13, 2010
7681592 Three-way poppet valves with floating seat Mar. 23, 2010
7634856 Method of assembling gas flow control valve Dec. 22, 2009
7491321 Oxidation tank control valve assembly and systems and methods for replenishing a charge of oxygen-containing gas within an oxidation tank Feb. 17, 2009
7472700 Adaptor for releasably mounting a vaporizer on an anesthesia machine Jan. 6, 2009
7472669 Method of generating pressure pulses, a pressure pulse generator and a piston engine provided therewith Jan. 6, 2009
7464725 Air distributor for a compressed-air-operated powder transportation unit of a powder coating device Dec. 16, 2008
7363942 Continuous automatic control and distributor valve, with a magnetic seal Apr. 29, 2008
7260462 Method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle Aug. 21, 2007
7243624 Electrically operated valve for controlling flow of hydraulic fluid Jul. 17, 2007
7037417 Mechanical control of fluids in micro-analytical devices May. 2, 2006
6818068 Conveyor for treating hollow bodies comprising an advanced pressure distribution circuit Nov. 16, 2004
6378556 Multiway valve Apr. 30, 2002
6257279 Plural function fluid valve and method Jul. 10, 2001
5819788 Base-plate distributing valve Oct. 13, 1998
5692724 Method and apparatus for attenuating high frequency vibration sensitivity in a control valve positioner Dec. 2, 1997
5482081 Single handle manifold Jan. 9, 1996
5460301 Concrete pump vehicle Oct. 24, 1995
5313984 Multi-fluid, variable sequence, zero dead volume valve and system May. 24, 1994
4955100 Apparatus for cleaning pipelines for beverages and the like Sep. 11, 1990

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