A filling machine for the hot filling of containers includes a line for feeding the containers to at least one supporting plate and a line for unloading the filled container from the supporting plate. Above the supporting plate there is a filling head associated with a respective valve assembly to convey the liquid from a containment tank into the container to be filled.
The valve assembly is associated with an internally hollow feeder conduit which accommodates a suction conduit with at least one suction inlet configured to determine the liquid level inside the container.
The filling head includes a sealing element having a first sealing body configured to engage hermetically against the upper edge of the container and is associated with a vent adapted to pass between a position for sealing the chamber for passing liquid from the supply feeder conduit toward the container and a position for venting.