Oberg Fuel Line Safety Valve

The Oberg Fuel Line Safety Valve is your first line of defense
against a siphon fire in the event of an accident. This revolutionary,
technically advanced in-line valve opens from the vacuum created by the
fuel pump. There is no flow restriction whatsoever. When the engine
stops the valve closes instantly stopping the flow of fuel. In the event
that the fuel pump is knocked off or the fuel line is severed, the
valve will close preventing siphoning from the fuel cell. This also
prevents fire from seeking the fuel cell through the severed line. Your
safety is the #1 priority.
Ports are #8 AN O-ring