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Class Information
Number: 137/505.16
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > With opening bias (e.g., pressure regulator) > Bias variable during operation > Liquid transfer
Description: Devices in which the pressure of the fluid is exerted upon the surface of a liquid free to move in such manner that fluctuations in the pressure of the fluid will transfer the liquid from one receptacle to another or from one portion of a receptacle to another portion thereof, and thereby operate the regulating valve.

Patents under this class:

Patent Number Title Of Patent Date Issued
6405722 Single stage regulator and method for regulating compressed air therefor Jun. 18, 2002
5630935 Pressure relief valve with sample removal port May. 20, 1997
4203465 Precision pressure control valve May. 20, 1980
4084612 Flow compensating pressure regulator Apr. 18, 1978

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