API Standard Pump BB3 – KB3S/KB3D

API Standard Pump BB3 – KB3S/KB3D

The KB3S / KB3D is an API BB3 type process pump with near centerline supported heavy-duty split casing axial. This pump’s design offers high performance and efficiency during stringent operating conditions. It is manufactured as per API 610. The back pullout feature ensures swift dismantling and assembly. The KB3S/KB3D pumps come with a pump head up to 1840 m with an option of upgrading to a higher capacity and head for operations at higher speeds. The pumps operate at a discharge pressure of up to Cl. 2500, nozzle orientation as side-side. The direction of rotation is clockwise from the coupling end. The KB3S / KB3D pump is suitable for applications in oil refineries and petrochemical industries, descaling operations in steel industries, oil wells, petroleum product applications, and chemical and process plants, pipeline applications.

Max Head:Up to 1840 Max capacity:Up to 1750 m3/hr

  • Design and manufacture as per API 610 standard.
  • Near centerline supported heavy duty axial split casing design to ensure reliability and performance under high-pressure operating conditions
  • Easy inspection and repair maintenance of bearings and mechanical seal after removal of coupling spacer only. The rotor can be removed by disassembling the upper half casing without disturbing suction/discharge piping and driver.
  • Low NPSH requirement is achieved with the first stage double suction impeller in KB3D pumps.

  • High-pressure fluid handling in oil refineries and petrochemical industry
  • MP and HP boiler feed applications
  • Descaling application in steel industries
  • Seawater injection application in oil wells
  • Mine Dewatering
  • Petroleum product Pipeline booster applications
  • Pump as hydraulic power recovery turbine in chemical and process plants.

Parameters KB3S/KB3D
Capacity (m3/hr)


Up to 1750


Head (m)


Up to 1840



Range ℃

-104 to 200


Discharge Pressure Up to Cl. 2500 #
Suction Pressure kg/cm2(g) Up to 80
Nozzle Orientation (Suc./Dis.) Side-Side
Standard Motor Synchronous Speeds (rpm) 1000 / 1200 / 1500 / 1800 / 3000 / 3600
Max. Operating Speed (rpm) 7000
Direction of Rotation Clockwise when viewed from coupling end
Flange Ratings Cl. 300 / 600 /

900 / 1500 / 2500


Note -1 : More higher capacity and head is possible when pumps are operated at higher speeds