Abstract: The present invention comprises fire arrestor device a triggering mechanism operatively connected to a well head and a plunger with a plug at one end being connected to the triggering mechanism. A guide and a valve are mounted to an inner surface of oil piping positioned below the well head align the plunger. A plug is formed at the distal end of the plunger, and is seated on a spring below the valve seat. The spring is held in compressed mode during normal operation. In the event of destruction of the well head, the triggering mechanism will melt or break. The spring then urges the plug upward engaging the valve seat and shutting off the fuel flow.