ZLM Horizontal Split Case Pump

Axially Split Case API 610 Centrifugal Pumps (BB1 type)

The process and transfer pump of ZLM design was developed for stringent demands. Is a special main pipeline pump recommended for applications with change of the flow during the lifetime of a pipeline.

Operation limits

Capacity 100 to 20,000 m³/h (440 to 88,057 gpm)
Head 10 to 1,200 m (30 to 3,900 ft)
Maximum Pressure 145 bar (2,103 psi)
Temperature up to 205 °C (401 °F)
Discharge flanges sizes 4' to 40'
Applications Pipeline services: Mainline and Booster, Oil-extraction technology: on land and offshore, Refinery technology, Chemical / Petrochemical industries, General industry, Metallurgical and steel industries, Combined heating and Power stations. This pump is recommended for applications with change of the flow during the lifetime of a pipeline.


This horizontal pump with double suction impeller and a between bearing design is perfect for pipeline applications as it is constructed under the API standards. The additional diffuser ensures a high efficiency. By changing the impeller and diffuser the BEP can be shifted in a wide range to achieve low power consumption and a long lifetime of the pump. It can also be used for other applications.

  • Axially split, horizontal, single stage centrifugal pump
  • Foot or Near-centerline mounted
  • Double volute casing
  • Thrust compensation by double suction closed impeller
  • Diffuser arrangement for high efficiency and low radial forces
  • Easy changing of impeller and diffuser to ensure best performance in a wide range
  • Side-Side nozzle arrangement

Heavy-duty process design according to API 610 latest edition (BB1 type)

  • Ring oil lubrication (other methods available)
  • Replaceable wear rings for casing and impeller
  • Fan and Water cooling available

  • Materials of construction per API 610 (other materials on request)