Construction of the Stelzen intermediate access gallery during the building of the Blessberg railway tunnel.
Alfred Kunz Untertagebau GmbH
Tunnel drainage under difficult conditions: long adits with a minimum of available space.
Type KTZ35.5 pumps were installed in the pipeline as booster pumps. This special solution can be easily implemented with any of our standard contractors' pumps.
Thanks to the simple construction and the patented oil lifter, Tsurumi contractors' pumps can run dry absolutely trouble-free. The minimal cooling due to the flowing medium is sufficient.