BBT/BBT-D Process Pumps

The BBT/BBT-D 2 stage, radially split ISO 13709 / API 610 Type BB2 pumps offers the widest range of hydraulic performance in the industry. The BBT-D double suction impeller provides reduced NPSH3 for tough services in refineries and other critical applications.


Main benefits

  • Centerline support for reduced thermally induced misalignment
  • BBT-D double-suction impeller for low Net Positive Suction Head (NPSH)
  • First critical speed is well above operating speed range for smooth operation
  • Casing designed for 2x API 610 nozzle loads for freedom from piping distortions
  • Grouted or ungrouted, 1x or 2x nozzle load baseplates for reduced installation cost

Main applications

  • Unit charge
  • Atmospheric or vacuum bottoms retrofits where Net Positive Suction Head Available (NPSHa) is limited
  • Fractionator bottoms
  • Coker heater charge
  • Boiler feed booster

Main design features

  • Centerline supported casing with top / top nozzles
  • Thermal expansion features
  • Staggered-vane double-suction impeller on larger sizes
  • Proven coke crusher option
  • Metco SUME coatings for abrasion resistance

Key characteristics


Up to 2,300 m3/h / 10,000 US gpm


Up to 760 m / 2,500 ft


Up to 100 bar / 1,440 psi


Up to 425 °C / 800 °F

Discharge sizes

From 150 to 250 mm / 6 to 10 inches

Maximum speed of rotation

Up to 3,600 rpm

Performance range

Performance range 50 Hz

BBT/BBT-D performance range 50 HzClick to zoom

Performance range 60 Hz

BBT/BBT-D performance range 60 HzClick to zoom

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