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Class Information
Number: 137/490
Name: Fluid handling > Line condition change responsive valves > Pilot or servo controlled > Fluid pressure type > Choked or throttled pressure type > Pilot valve within main valve head
Description: Apparatus in which the valve controlling the servo fluid pressure is physically located within the main or flow controlling valve.










Patents under this class:

Patent Number Title Of Patent Date Issued
8631819 Gas supply system for pneumatic store ejection utilizing a removable, replaceable and on-board rechargeable gas storage vessel Jan. 21, 2014
8353310 Valves having removable internal actuation mechanisms Jan. 15, 2013
8322681 Relief valve for a turbocharger Dec. 4, 2012
8297941 Fuel pump Oct. 30, 2012
8113228 Suction valve Feb. 14, 2012
7665579 Flow control valve having pressure compensating valve Feb. 23, 2010
7044011 Test fixture assembly for directional pilot valve and related method May. 16, 2006
7017605 Valve assembly Mar. 28, 2006
6516825 Method and valve device for counteracting harmful pressure pulses in a hydraulic system Feb. 11, 2003
6105608 Gas purge valve Aug. 22, 2000
5794652 Relief valve Aug. 18, 1998
5791372 Relief valve Aug. 11, 1998
5676172 Relief valve Oct. 14, 1997
5460198 Pressure-activated flow-control valve Oct. 24, 1995
5404902 Isolation automatic control valve Apr. 11, 1995
4942900 Pressure control valve Jul. 24, 1990
4757839 High pressure relief valve Jul. 19, 1988
4716927 Integrated control safety valve means Jan. 5, 1988
4667695 Pressure regulating and on-off valve May. 26, 1987
4665942 Hydraulic pressure fuse May. 19, 1987
4552173 Integrated control safety valve Nov. 12, 1985
4541562 Mixing valve Sep. 17, 1985
4534380 Gas regulator valve Aug. 13, 1985
4444215 Mixing valve Apr. 24, 1984
4273154 Device for regulating the vacuum in a vacuum line system, especially for milking installations Jun. 16, 1981
4076041 Pilot valve operated demand regulator for a breathing apparatus Feb. 28, 1978
3972345 Pilot operated relief valve Aug. 3, 1976
3963044 Pilot valve operated pressure regulator Jun. 15, 1976
3945393 Regulating valve Mar. 23, 1976











 
 
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