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Class Information
Number: 251/206
Name: Valves and valve actuation > With selective flow regulation > Different sized bores in valve head
Description: Devices in which the means for varying the flow includes a plurality of passages through the valve head each being of a different size from the others.










Sub-classes under this class:

Class Number Class Name Patents
251/207 Rotary plug 63


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8613607 Pressure pulsation dampener Dec. 24, 2013
8567759 Advanced fluidics gate valve with active flow control for subsea applications Oct. 29, 2013
8511329 Metering valve Aug. 20, 2013
8511330 Servo minimum pressure valve Aug. 20, 2013
8496026 Valve Jul. 30, 2013
8453677 Valve Jun. 4, 2013
8434512 Rotating disc diluter for fluid flows May. 7, 2013
8281780 Regulation valve Oct. 9, 2012
8241034 Fuel selection valve assemblies Aug. 14, 2012
8173081 Stopper body May. 8, 2012
8122912 Gas flow restrictor Feb. 28, 2012
7779861 Device for adjusting the flow-rate of a fluid, particularly medical oxygen and compressed gases in general Aug. 24, 2010
7571713 High-pressure pump for a fuel injection system of an internal combustion engine Aug. 11, 2009
7201360 Pneumatic device having a selectively variable orifice Apr. 10, 2007
7156370 Rotary valve in a multi-gas cooker Jan. 2, 2007
7063302 Sample valve with integral sample shut off function for chromatograph Jun. 20, 2006
7028984 Flow control valve for gardening pipe Apr. 18, 2006
6902120 Sprinkler provided with a built-in mechanism for dispensing detergent Jun. 7, 2005
6893002 Lockout valve May. 17, 2005
6726174 Control valve, especially for an internal combustion engine, for the controlled recycling of exhaust gases Apr. 27, 2004
6705340 Emergency gas and electricity shutoff apparatus and control system Mar. 16, 2004
6604546 Hose-end chemical delivery system Aug. 12, 2003
6425534 Spraying apparatus having a sealing member with apertures Jul. 30, 2002
6206687 High turndown modulating gas burner Mar. 27, 2001
6186169 Valve and arrangement for fire suppression system Feb. 13, 2001
6162048 Dual orifice pilot assembly Dec. 19, 2000
6116278 Lockout valve Sep. 12, 2000
6095491 In-line flow rate control device Aug. 1, 2000
6026854 Compressed gas regulator with flow control and internal gauge Feb. 22, 2000
5716555 Multi-fuel external metering rod and system Feb. 10, 1998
5706852 Multi-orifice plate carrier and fitting with positioner, differential selector and horizontal adjusting bar Jan. 13, 1998
5678602 Gas control and dispensing assembly and gas storage device equipped with such an assembly Oct. 21, 1997
5653220 Burn rate control valve for gas fired heaters Aug. 5, 1997
5593136 Gas flow rate regulator Jan. 14, 1997
5485983 Seal apparatus for a flow control valve Jan. 23, 1996
5411059 Multiple flow rate fluid control valve assembly May. 2, 1995
5269344 Supply valve and arrangement for fire suppression water sprinkler system Dec. 14, 1993
5228648 Railway freight brake retainer valve device Jul. 20, 1993
5148829 Multi-orifice plate and fitting with positioner and differential selector Sep. 22, 1992
5123574 Dispensing lid or cap Jun. 23, 1992
5108074 Micrometric metering device Apr. 28, 1992
5103862 Valve and arrangement for fire suppression water sprinkle system Apr. 14, 1992
5052655 Ball valve lock plate Oct. 1, 1991
5036883 Valve and arrangement for fire suppression water sprinkler system Aug. 6, 1991
5016673 Flow selector device May. 21, 1991
4995423 Valve and arrangement for fire suppression water sprinkler system Feb. 26, 1991
4993453 Valve and arrangement for fire suppression water sprinkler system Feb. 19, 1991
4971109 Valve and arrangement for fire suppression water sprinkler system Nov. 20, 1990
4951795 Modulation valve device Aug. 28, 1990
4909277 Selectively indexed multiple orifice valve Mar. 20, 1990

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