Aircraft vacuum toilet unblocking tool

摘要

The invention relates to a tool for unblocking aircraft vacuum toilet pipes. The tool has an attachment means in the form of a rubber bung 2 to secure the tool to the pipe which is blocked. By rotating a wingnut 4 the rubber bung 2 is forced to compress which therefore expands radially in the aircraft pipe 13C. The bung 2 in the pipe13C is then securely fixed to the pipe walls, which also seals the pipe 13C at the inserted tool end. This enables compressed air/nitrogen from the bottle rig (17figure 6) to flow through the coupling 5 and also through pipe bung retainer 1 into the pipe to clear the blockage. The tool also comprises a safety valve 8 to limit the air/nitrogen pressure through the tool.