Float valve for filler neck of especially motor vehicle's fuel tanks has main and auxiliary floats, with main float having locking protrusion mechanically interconnected to auxiliary float

摘要

The float valve has main (6) and auxiliary (18) floats. The main float has a locking protrusion which is mechanically interconnected to the auxiliary float. The auxiliary float is installed in such a way that when floating during filling of the tank it releases the main float via the operation of the locking protrusion only when there is such buoyancy force acting on the main float that the main float after its release floats up immediately into the floating position.