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Class Information
Number: 137/505.3
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > With opening bias (e.g., pressure regulator) > Reactor surface separated by apertured partition > Valve stem passes through the aperture > Plural reactor surfaces
Description: Devices wherein the reactor surface is in the form of an expansible chamber having at least two flexible walls.

Patents under this class:

Patent Number Title Of Patent Date Issued
8534315 Diaphragm assemblies for use with fluid control devices Sep. 17, 2013
6752169 Pressure regulator and shut-off valve Jun. 22, 2004
6488046 Pressure reducer for compressed gases Dec. 3, 2002
5746245 Meters May. 5, 1998
4840195 Piston-backed gas pressure regulator Jun. 20, 1989

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