Abstract: The invention relates to a recirculating construction machine for handling bottles or similar containers, having a rotor rotatably supported about a vertical machine axis on a machine frame and that can be driven about said machine axis, having a plurality of handling positions on the rotor, having an annular enclosure concentrically enclosing the machine axis and forming, or the housing thereof forming, an interior bounded from the environment and tillable with a sterile gaseous and/or vapor medium, in which the functional elements of the handling positions each extend at least into a partial area acting together with the containers, and in which the containers are received at least in an opening area during handling.