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Class Information
Number: 137/520
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Biased open > Weight biased > Edge pivoted valve
Description: Valves in which the valve body is pivoted about an axis at or closely adjacent one of its edges.

Patents under this class:

Patent Number Title Of Patent Date Issued
8316876 Flushing device with removable drain ring for potable water systems Nov. 27, 2012
7448219 Hingeless flapper valve for flow control Nov. 11, 2008
6508246 Mechanical draft controller Jan. 21, 2003
4599991 Door for brew kettle Jul. 15, 1986
4362091 Air deflection duct assembly Dec. 7, 1982
4350353 Tank wagon Sep. 21, 1982
4331342 Tank wagon May. 25, 1982
4064905 Apparatus for maintaining constant mass flow Dec. 27, 1977

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