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Class Information
Number: 137/450
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Float arm operated valve > Balanced valves
Description: Apparatus in which the valve controlled by the float arm is designed in such a manner that fluid pressure is exerted on opposing surfaces of the valve so that the forces acting on the valve as a result of flow or pressure in the line are neutralized or balanced, and thus a smaller force is necessary to actuate the valve.

Patents under this class:

Patent Number Title Of Patent Date Issued
6953026 Pressure regulating valve for automotive fuel system Oct. 11, 2005
5551466 Hydraulic valve Sep. 3, 1996
5427137 Fluid shut off valve and fill level indication Jun. 27, 1995
5207241 Liquid shut-off valve May. 4, 1993
5205320 Flow rate control unit Apr. 27, 1993
5121767 Automatic drain valve Jun. 16, 1992
5090439 Atmospheric compensating automatic air release valve Feb. 25, 1992
4453560 Hydraulically balanced valve mechanism Jun. 12, 1984
4376446 Vent valve for fuel tanks and the like Mar. 15, 1983
4164955 Liquid level control valve Aug. 21, 1979
4014362 Simplified balance valve steam trap Mar. 29, 1977

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