Grundfos Horizontal Multistage Pumps

A horizontal multistage pump is a variety of centrifugal pump that uses a rotating vane impeller to draw in liquid and pressurises it. Liquid enters through the suction port to the centre of the first impeller and is directed along a horizontal pump shaft to successive multi-stage Impellers- usually two or four – and thence to a discharge port.

This type of pump design is used in heavy duty applications

  • • Primary water supply, fresh or seawater
  • • Cooling water, reclaiming water, thickener overflow and seepage prevention and dewatering in mining processes
  • • Solvent extraction, water pressure boosting and transfer in industrial processes
  • • Oil and gas production onshore and offshore as well as pipeline pressurisation
  • • Pulp and paper industries
  • These pumps are suitable for pumping clean or slightly polluted liquids. The pump materials may be adapted to cope with chemical abrasion. Their main advantage is that they are powerful, compact, and useful where very high pressures and tight fitting are required.

    Oil industry technology company Schlumberger has designed the REDA HPS G3 horizontal multistage pumping system for surface oil and gas pumping using equipment with abrasion resistant zirconium for the pump bearings. The system's liquid delivery capabilities range from 218 to 10,040 cubic metres per hour.

    Ruhrpumpen's HMS horizontal multistage pump is used in high pressure industrial applications such as Boiler feed, and in the petrochemical, chemical and power generation industries. It has a liquid delivery capacity of 454 m3 per hour and a maximum head of 670 metres. It will work to a maximum pressure of 51 bar and to a pumped liquid temperature of +121 degrees C.

    Depending on its applications the pump may be constructed entirely from cast iron or a combination of cast iron with bronze, carbon steel and AISI 316 stainless steel.