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Excess flow shutoff valve

United States Patent

9,255,646
February 9, 2016
View the Complete Patent at the US Patent & Trademark Office
Excess flow shutoff valve comprising a valve body, a valve plug, a partition, and an activation component where the valve plug, the partition, and activation component are disposed within the valve body. A suitable flow restriction is provided to create a pressure difference between the upstream end of the valve plug and the downstream end of the valve plug when fluid flows through the valve body. The pressure difference exceeds a target pressure difference needed to activate the activation component when fluid flow through the valve body is higher than a desired rate, and thereby closes the valve.
Kiffer; Micah S. (Kutztown, PA), Tentarelli; Stephen Clyde (Schnecksville, PA)
AIR PRODUCTS AND CHEMICALS, INC. (Allentown, PA)
13/ 930,474
20150000762
June 28, 2013
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made at least in part with funding from the United States Department of Energy under DOE Cooperative Agreement No. DE-FC26-98FT40343. The United States Government has certain rights in this invention.