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BB5

API 610 Multistage Heavy-Duty Centrifugal Pumps

Eureka’s BB5 Process Pumps are horizontal, multistage, barrel-type centrifugal pumps engineered for high-pressure, continuous-duty service in the most demanding environments, including offshore oil & gas, petrochemical, and natural gas processing. Built to the latest API 610 standards, they combine performance, reliability, and maintainability with a modular design optimized for harsh conditions. 

Featuring a double-volute, axially split inner case and opposed impellers, the BB5 offers exceptional hydraulic balance, eliminating the need for a balancing drum. With top-top nozzle configurations, dynamic rotor balancing, and easy service access, these pumps reduce operational downtime and increase overall system efficiency. 

Pump inner case forms together with covers, bearings, mechanical seals, and coupling a hydraulic module. This module can be pulled out from the barrel for repair without disturbing the pipe nozzles.

All units are designed in accordance with API 610 and NORSOK requirements, comply with the EU Machinery Directive 2006/42/EC, and can be ATEX and IECEx certified for use in hazardous environments.

Process Pumps_Eureka BB5 (1)

Main Features & Benefits

  • API 610-compliant design for offshore applications 
  • Capacity range: 500 – 8,000 m³/h 
  • Differential pressure: 100 – 350 bar 
  • Design pressure: 40 bar 
  • Temperature range: -46°C to 250°C 
  • High system availability and minimal maintenance.  
  • Heavy-duty nozzle design: 2x or 4 x API 610 nozzle load rating 
  • Between-bearings layout enhances shaft stability and reduces deflection 
  • High-efficiency hydraulics with low energy consumption 
  • Oil lubricated hydrodynamic bearings for durability 
  • Composite or silicon carbide non drive-end journal bearing  
  • Spacer type flexible coupling allows for bearing and seal replaceable without motor removal 
  • Wide material range: Super Duplex, Duplex, NiAlBr, AISI 316, Carbon Steel 
  • Optional monitoring: Vibration, temperature and speed sensors 
  • Noise enclosure optional 

Description

Pump 

  • Single stage, radially split, double volute, between-bearings centrifugal pump optimized for balanced hydraulic forces 
  • Deep seal chamber for API 682-compliant mechanical seals 
  • Modular maintenance design allows replacement of bearings and seals without disturbing the motor or piping. 

Motor 

  • High-voltage 3-phase squirrel cage induction motor 
  • VFD compatible for variable speed operation 

Nozzles & Connections 

  • Vertical pumps: Inline or side-side nozzle configurations 
  • Horizontal pumps: Top-top or inline nozzle configurations 
  • Standard: ANSI B16.5 300 lbs RF flanges for suction and discharge 

Sealing options 

  • Single mechanical seal (API plan 11) 
  • Dual mechanical seal with barrier fluid (API plan 53B) 

Impeller & Wear Rings 

  • Double suction impeller reduces both axial thrust and NPSH required 
  • Impeller and casing wear rings interference fitted and mechanically secured 


Bearings & Lubrication 

  • Oil-lubricated rolling element combined thrust and radial bearing (drive end) 
  • Process-fluid lubricated composite or silicon carbide journal bearing (non-drive end) 


Coupling & Maintenance 

  • Spacer-type flexible coupling for easy service 
  • Bearings and seals can be accessed without dismounting the motor 

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