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Class Information
Number: 137/505.27
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 > In valve stem
Description: Devices in which the passage to the reactor surface chamber is through the valve stem.

Sub-classes under this class:

Class Number Class Name Patents
137/505.28 Also through reactor surface 36

Patents under this class:

Patent Number Title Of Patent Date Issued
8640732 High pressure inlet regulator Feb. 4, 2014
7708016 Gas conserving regulator May. 4, 2010
6948520 Fine adjustment gas regulator Sep. 27, 2005
6382243 Pressure-reducing valve May. 7, 2002

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