A filling machine (1) for the hot filling of containers (20) with food-type liquids, which comprises a line for feeding the containers (20) to be filled to at least one supporting plate (2) and a line for unloading the filled container from the supporting plate (2); above the supporting plate (2) there is a filling head (3), which is associated with a respective valve assembly (4) which is adapted to convey the liquid from a containment tank into the container (20) to be filled.The valve assembly (4) is associated with a feeder conduit (9) which is internally hollow and accommodates a suction conduit (19) which is provided with at least one suction inlet which is designed to determine the level of the liquid inside the container (20), the feeder conduit (9) being functionally associated with a flow control element (9a).The filling head (3) comprises a sealing element (30) which has a first sealing body (31) which is designed to engage hermetically against the upper edge of the container (20) and is associated with a vent which is adapted to pass between a position for sealing the chamber for passing liquid from the supply feeder conduit (9) toward the container (20) and a position for venting in which at least one port is defined for the passage of air from the chamber for passing liquid toward the outside, means being provided for actuating the suction of the liquid from the container by way of the suction conduit (19) which are functionally associated with a device for activating the vent from the position for sealing to the position for venting; the filling machine (1) further comprises an element for moving the suction conduit (19) between an inactive position, in which it is arranged with its lower edge (19a) above the lower edge of the first sealing body (31), and an active position, in which the lower edge (19a) of the suction conduit (19) is arranged below the lower edge of the first sealing body (31)
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