ZE/ZF End Suction Pump Range

The ZE/ZF are ideal pumps for arduous industrial applications handling clean, cold or hot liquids, including hydrocarbons and light chemicals. The ZE/ZF pumps are industrial process pumps with a modular design to provide maximum interchangeability of spares.


Main benefits

  • Centerline mounted to ease thermal expansion without jeopardizing the shaft alignment
  • Wear rings and balance holes optimized to maximize seal and bearing life
  • Extra heavy-duty shaft for low shaft deflection and long life of seal and bearings
  • Cooling chamber easy to clean
  • Low noise fan for high ambient or operating temperatures

Main applications

  • Booster pumps for medium size boiler feed water units in conventional thermal and combined cycle power stations
  • Hot water circulation pumps in district heating plants and boiler circulation in industrial power generation
  • Auxiliary pumps in conventional and renewable thermal power stations
  • Main and auxiliary Heat Transfer Fluid (HTF) circulation in solar power stations
  • Feed pumps, second pass pumps and Energy Recovery Device (ERD) circulation pumps in desalination by reverse osmosis

Main design features

  • Enclosed impeller provided for lower Net Positive Suction Head Required (NPSHr)
  • Self venting, centerline discharge
  • Casing feet and baseplate designed to meet API 610 nozzle loads and moments and increased thermal expansion
  • API 682 seal chambers
  • Axial thrust bearings are back-to-back angular contact or taper roller for heavy-duty applications

Key characteristics


Up to 2,600 m3/h  /  11,440 US gpm


Up to 300 m  /  1,000 ft


Up to 100 bar / 1,450 psi


Up to 425°C  /  800°F

Discharge sizes

Up to 400 mm  /  16 inches

Maximum speed of rotation

Up to 3,600 rpm

Performance range

Performance range 50 Hz

ZE/ZF performance range 50 HzClick to zoom

Performance range 60 Hz

ZE/ZF performance range 60 HzClick to zoom

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