High Pressure Centrifugal Pumps Made of Cast Stainless Steel


The new pump line NMH/NMV from OSNA-Pumpen GmbH is now available made of cast stainless steel (AISI 316).

High Pressure Centrifugal Pumps Made of Cast Stainless Steel

New Pump Line NMV from OSNA-Pumpen

This pump line comprises a selection of sturdy, wear-resistant horizontal or vertical multistage centrifugal pumps with closed impellers. Casting these impellers using the lost-wax process and trimming their diameters to meet the duty point leads to optimized energy efficiency of the whole pump. Furthermore, there are no circlips in contact with the medium which leads to increased wear resistance.

The performance range includes a maximum flow capacity of 220 m³/h and a maximum operating pressure of 40 bar, using discharge nozzles sized from DN 32 to DN 80. An extension of discharge nozzle sizes is being planned. The maximum permissible liquid temperature is 110°C for gland packing and 140°C for mechanical shaft seals. Apart from stainless steel, a cast iron version with impellers optionally made of bronze or stainless steel is also available.

Typical horizontal or vertical pump sets come with flexible couplings, driven by IEC electric motors. Alternatively, either diesel engines or turbines can be used to drive the horizontal pumps.

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