Flame mitigation device for portable fuel containers

A method for coupling a flame mitigation device to a fuel container, wherein the fuel container comprises a hollow tank body defining a fuel-receiving chamber and a main container opening for permitting flow of a liquid fuel into and out of the fuel-receiving chamber, wherein said method comprises the steps of:

• providing the flame mitigation device comprising a sidewall defining a plurality of perforations through which liquid fuel flows when dispensing liquid fuel from the fuel-receiving chamber, and wherein the flame mitigation device further comprises a pair of wing elements extending outwardly from the sidewall, wherein at least a portion of the wing elements are spaced apart from an imperforate section of the sidewall;
• and
• inserting the flame mitigation device through the main container opening of the fuel container, wherein during said inserting step, the wing elements are compressed adjacent to an outer surface of the sidewall;
• and
• securing the flame mitigation device within the main container opening of the fuel container, wherein during said securing step, the wing elements expand away from the outer surface of the sidewall.