Abstract: The invention relates to a capping machine comprising a protected area from impurities, an unprotected area divided from the protected area by a parting wall, and an operating unit. The operating unit includes a container support element arranged in the protected area, an operating head arranged in the protected area and configured to apply one capsule on the relative container, a motor assembly arranged in the unprotected area and configured to drive motion of the operating head, a torque control head between the motor assembly and the operating head, and an annular bellows element coaxial with the vertical axis and within the protected area and one opposite axial end crossed in a sealed manner by an output shaft of the torque control head. The torque control head is arranged above the parting wall in the unprotected area and the output shaft crosses said opening and the entire bellows element.

Abstract: The invention relates to a capping machine comprising a protected area from impurities, an unprotected area divided from the protected area by a parting wall, and an operating unit. The operating unit includes a container support element arranged in the protected area, an operating head arranged in the protected area and configured to apply one capsule on the relative container, a motor assembly arranged in the unprotected area and configured to drive motion of the operating head, a torque control head between the motor assembly and the operating head, and an annular bellows element coaxial with the vertical axis and within the protected area and one opposite axial end crossed in a sealed manner by an output shaft of the torque control head. The torque control head is arranged above the parting wall in the unprotected area and the output shaft crosses said opening and the entire bellows element.

Abstract: The invention refers to a plant for treating receptacles adapted to contain a pourable product comprising: at least a treatment unit apt to carry out a treatment process on the receptacles; an isolation chamber housing the treatment unit and containing, in use, a controlled atmosphere controlled in sterile and/or aseptic conditions; and a filtering unit configured to filter a gas to be introduced in the isolation chamber for constituting the controlled atmosphere; wherein the treatment plant further comprises a test device housed inside the isolation chamber, immersed, in use, in the controlled atmosphere and configured to perform one or more test operations on the filtering unit.