During this year’s ACHEMA in Frankfurt/Main, OSNA-Pumpen GmbH presented the new pump series NMH/NMV for the first time. This pump series is a further development of the former MH/MV series.

This series contains robust abrasion-proof horizontal or vertical multistage centrifugal pumps with closed radial impellers. The performance range comprises a maximum capacity of 220 m³/h and a maximum head of 400 m in nominal sizes of discharge branches from DN 32 to DN 80. The maximum liquid temperature for the version with gland packing is 110 °C and 140 °C for the version with mechanical seal. By use of different impeller diameters the pumps can be optimally adjusted to the operation point. Because of this the operating costs can be reduced by high efficiency.

At present, we are using materials like cast iron and bronze. But the version in cast steel and stainless steel is in the planning, as well as the extension with a discharge branch > DN 80. Impellers in stainless steel are already available. The advantage of this new pump range is that there are no retaining rings in the area of the liquid.

The pumps are elastically coupled and driven by IEC-electric motors. Regarding the horizontal pump also a drive with diesel engine or turbine is possible.

These new NMH/NMV pumps are identical regarding the performance and replaceable regarding the dimensions with the former pump series MH/MV.

Through a consistent quality and cost management OSNA-Pumpen GmbH was able to improve the competitiveness of this pump series considerably.

Picture: The new NMH/NMV (here NMV) by OSNA-Pumpen (photo: OSNA).