Anti-overpressure fuel tank

An anti-overpressure fuel tank comprising:

• a tank;
• a venting system of said tank comprising:
• a float mounted in a hinged manner in said tank;
• a flap mechanically coupled to said float, said flap to close an opening in said tank in a closed flap position;
• a valve comprising a rod mounted sliding within an orifice of said flap, said valve comprising an open valve position and a closed valve position, said rod comprising a first end with a shoulder intended to act as a stop for the closed valve position of said rod to block said orifice, and a second end with another shoulder forming a seat for a compression spring arranged around said rod and pressed against said flap to spring bias said rod in the closed valve position;
• wherein the flap adopts the flap closed position, by being pushed by said float when a level of fuel in the tank reaches a certain threshold, and an open flap venting position, by being driven by the float when the level of fuel is below said certain threshold;
• and
• wherein said tank is vented when a force exerted by an internal pressure on said valve exceeds a sum of forces exerted on said valve by an atmospheric pressure and by said compression spring, and said valve is pushed into the open valve position against said compression spring.