Abstract: A two-way repeatable flushing device, comprising a flushing member for flushingupwards into the annular space between drill pipe and bore hole wall or lining pipe. Flushing is ensured by means of a remotely controlled valve and a balanced pressure control by associated valve parts and by means of pressure liquid to provide a controlled distribution of the flow downwards and upwards respectively, and the hydraulic conditions are thereby improved by hole cleaning during the drilling operation itself. The solution is particularly of interest for use in particularly complicated, long-range wells having significant paths in a horizontal direction. The flushing member ensures a satisfactory hole cleaning as a consequence of improved hydraulic conditions in the annular space.