Excess flow valve with self-resetting function

Abstract

An excess flow valve includes a valve body including an inlet, an outlet, and a pressure relief portion. The inlet includes an outlet port. A pressure relief valve is positioned in the pressure relief portion. A resetting device is installed within the pressure relief valve, and includes a push rod. An excess flow device is installed within the inlet and includes a flow-stopping component which blocks the outlet port when subjected to fluid pressure exceeding a set limit. When the push rod is moved by a force, one end of the push rod moves toward a position where the flow-stopping component blocks the outlet port. After abnormal exclusion, simply operating the push rod to move the flow-stopping component to release the obstruction. Users can easily release the obstruction of the excess flow device to the fluid by operating the resetting device.

Dependencies are inferred from the claim text.