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Class Information
Number: 137/505.31
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 > Reactor is an inverted cup having liquid seal
Description: Devices wherein the reactor surface is in the form of a bell or inverted cup floating in a liquid which forms a liquid seal for the reactor surface chamber.

Sub-classes under this class:

Class Number Class Name Patents
137/505.33 Valve head in inlet chamber 2
137/505.32 With movement dampener 0

Patents under this class:

Patent Number Title Of Patent Date Issued

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