Ventilated air bellows for a pneumatic spring, pneumatic spring containing a ventilated air bellows, and pneumatic spring system containing ventilated air bellows

An air bellows for a pneumatic spring of a commercial vehicle, comprising:

• an axle-side region and a body-side region, wherein the axle-side region arranged on a plunger and movable by a compression or extension movement between a first, compressed position and a second, extended position;
• and
• an interior space adapted to be filled with compressed air via a compressed air opening connected to a compressed air line;
• and
• a valve connected to an atmosphere for ventilating the interior space and movable to a closed position by applying compressed air present in the interior space to the valve, wherein the valve is located entirely within a chamber provided in or on the plunger;
• and
• wherein the air bellows is substantially rotation symmetric to an axis of symmetry, and the valve is located on the axis of symmetry, and wherein the air bellows is configured to support a commercial vehicle.