FELUWA MULTISAFE® double hose-diaphragm pumps
for abrasive, aggressive and toxic media


Underground mines require effective dewatering to avoid flooding. Traditional dewatering systems need large underground settling pits in order to separate solids and fluids. Centrifugal pumps transport the relatively clean water to the surface over several stages. Traditional settling pits require space, maintenance and centrifugal pumps which are subject to low efficiency and high wear.

The better alternative: MULTISAFE® double hose-diaphragm pumps

With these pumps mine dewatering is especially efficient since wastewater and sludge are transported from underground to surface in a single stage. Settling ponds are no longer necessary because the solids are directly disposed with the mine water.

In addition to dissolved salts, the seepage and ground water to be pumped also contains solids with various grain sizes e.g. small stones, concrete residue etc., which cannot be filtered. Therefore mine water is considered a critical, heterogenous medium with very low solids concentration and increased sedimentation risk. Thus MULTISAFE® pumps for mine dewatering applications are designed with the so-called DownFlow Technology (DFT). This downflow from the top to the bottom efficiently prevents sedimentation inside the pump ensuring a trouble-free operation.

Depending on the length of the pipeline to the surface and the high pumping pressure resulting from this, double valves are used. In case of potential valve leakage, the second valve ensures sealing and prevents mine water backflow. In addition to this the considerably smaller footprint in comparison to the conventional diaphragm pumps allows for significant savings in terms of pump room excavation.