Abstract: A vacuum toilet comprises a toilet bowl (1) and a vacuum pipeline (3) which opens out into said toilet bowl. In the region of the opening (2), the vacuum line (3) has a cross-sectional narrowing in the form of a foreign-body barrier (5) which projects radially into the line interior. Alternatively provided is an insert pipe part (6) which can be inserted into the vacuum pipeline (3) in the region of the opening (2) and has an above-described foreign-body barrier (5).

Abstract: The pipe cleaning nozzle is designed for the removal of deposits (23) in vacuum toilet pipes, particularly such pipes in aircraft, ships and trains. Since pipes (10) of this type are often installed to follow narrow radii of curvature, a need exists for a pipe cleaning nozzle which has a small axial dimension. The nozzle head (12) comprises a convex front wall (16) and a concave rear wall (17). The connector piece (13) is partially sunk in the concave rear wall (17). The high-pressure jets (22) are discharged from the nozzle orifices (21) to split off the deposits. The overall length of the nozzle head (12) inclusive of the connector piece (13) is not larger than the outer diameter of the nozzle head.