ZW Horizontal Split Case Pump

Single Stage Split Case Horizontal Centrifugal Pumps

ZW pump - single stage horizontal split case pump
ZW pump - single stage horizontal split case pump
ZW pump - single stage horizontal split case pump - sectional
The ZW pump is a horizontal, single stage, axially split case centrifugal pump. Its innovative design allows a more compact installation and ensures perfect alignment.

Operation Limits

Capacity up to 9,000 m³/h (34,400 gpm)
Head up to 340 m (1,115 ft)
Maximum Pressure up to 98 bar (1,421 psi)
Temperature up to 120 °C (248 °F)
Applications Fire service, Cooling towers, Municipal, Oil process, Petrochemical, Sugar industry, Paper industry, Pipeline, Power generation, Dewatering, Mining, Water.


  • Horizontal, single stage, split case centrifugal pump
  • Horizontally split case, double volute (in high energy pumps) minimizes radial loads and allows operation over a wide range of capacities
  • Enclosed double suction impellers, hydraulically balance thrust loads
  • Flanged connections
  • Clockwise or counter-clockwise rotation
  • Grease or oil lubrication
  • Compact mechanical seal design
  • Horizontal or vertical mounting arrangements are available

Design and build to Hydraulic Institute (HI) standard

  • Suction and discharge connections are concentric to make piping easier
  • All impellers are dynamically balanced for vibration-free-operation
  • Interchangeable radial and thrust bearings with oil or grease lubrication
  • Rigid shaft, combined with double volute casing
  • Stuffing box design for mechanical seal (packing is optional)


ZW - pump curve

ZW performance pump curve single stage split case pump