A valve assembly for a filling machine has an adduction conduit along a valve axis connectable to a tank to allow inflow of liquid from the tank to containers. A shutter inside the adduction conduit moves between a closing position and one or more opening positions. A tubular control stem internally defines a conduit. A probe for detecting filling level with a single detection point near the probe tip is inserted inside the conduit defined by the tubular control stem and moves between at least one extracted position and a retracted position. A first electric motor connected to the tubular control stem moves the shutter between the closing position and the one or more opening positions. A second electric motor connected to the probe moves the probe between the at least one extracted position and the retracted position. The first and second electric motors are controllable independently from each other.

An apparatus for filling a container with a free-flowing material includes a probe, a probe end, a return gas pipe, a gas channel, an opening, and a first electrical probe contact. During filling, the probe extends into the container along an axial direction with the probe's end determining the filling height. The probe includes a return gas pipe with an opening disposed at its end. The first electrical probe contact is formed at the probe end so that it is offset along the axial direction from the opening.

A valve assembly for a machine for filling containers with a liquid has an adduction conduit extending along a valve axis and connectable to a tank of the filling machine to allow inflow of the liquid through a discharge mouth. A shutter arranged inside the adduction conduit and moving along the valve axis between a closing position and one or more opening positions has an annular gasket that with the shutter in the closing position sealingly engages an abutment seat. The annular gasket has a first annular portion for sealingly engaging a first portion of the abutment seat, and a second annular portion for sealingly engaging a second portion of the abutment seat. At least one flow window interrupts an annular continuity of the second annular portion and allows a partialized flow of liquid through the adduction conduit when the first annular portion is spaced apart from the abutment seat.