Between Bearing Radially Split Process Pump (API 610 BB2)

Model: CFDD

The CENTFOS-CFDD API 610 BB2 pump is a between-bearing, radially split, single-stage centrifugal pump designed for refinery, petrochemical, offshore, and pipeline services. Engineered for high-pressure and high-temperature applications, its robust construction ensures mechanical strength and reliability, delivering stable, efficient performance in demanding industrial operating conditions.

API 610 BB2 Pump

Introduction

The CENTFOS-CFDD API 610 BB2 pump is a between-bearing, radially split, single-stage centrifugal pump designed in full compliance with the latest edition of API 610 for critical refinery, petrochemical, offshore, and pipeline services.

The BB2 configuration is engineered for high-pressure, high-temperature, and hazardous fluid applications, where reliability, mechanical strength, and operational safety are essential. Its radially split casing allows the pump to withstand high internal pressures while maintaining structural integrity and alignment stability.

CENTFOS BB2 pumps combine optimized hydraulic performance, robust construction, and precision engineering to deliver dependable operation in demanding industrial environments.

Key Features
  • Designed according to API 610 (BB2 type)
  • Between-bearing rotor design
  • Radially split casing for high-pressure service
  • Single-stage construction
  • Heavy-duty shaft with minimal deflection
  • High-strength pressure-retaining casing
  • Cartridge seal compatible
  • API 682 seal chamber design
  • Replaceable wear rings
  • Long bearing life
  • High efficiency hydraulics
  • Suitable for continuous duty
  • VFD compatible
  • Designed for severe operating conditions
Technical Specifications
Parameter Range
Flow Rate Up to 3,500 m³/hr
Head Up to 400 m
Pressure Up to 150 bar
Temperature −46°C to +450°C
Speed 1,500 / 3,000 rpm
Stages Single
Flange Rating ASME Class 150–1500
Seal Type Single / Dual Mechanical
Seal Plans API Plan 11 / 52 / 53 / 54
Mounting Horizontal Baseplate
Design Characteristics
Hydraulic Design
  • Optimized impeller vane geometry
  • Balanced hydraulic thrust
  • High efficiency across operating range
  • Stable performance near BEP
  • Low NPSHr design
  • Smooth internal flow passages
Mechanical Design
  • Between-bearing rotor configuration
  • Extremely low shaft deflection
  • Heavy-duty shaft and bearings
  • High stiffness rotor assembly
  • Designed for high pressure and temperature
  • Precision-machined components for alignment accuracy
Seal Chamber Design
  • API 682 compliant seal chamber
  • Cartridge seal compatible
  • Suitable for hazardous fluids
  • Large bore seal housing
  • Supports multiple flush plans
Maintenance Advantages
  • Radially split casing prevents distortion under pressure
  • Easy access to internal components
  • Reduced maintenance downtime
  • Simplified inspection procedures
  • Designed for long maintenance intervals
Construction & Materials
Component Standard Material
Casing ASTM A216 WCB / WCC
Impeller SS316 / CF8M
Shaft AISI 4140 / 410 SS
Wear Rings Stainless steel
Sleeve SS410 / SS316
Bearings SKF / FAG / Equivalent
Baseplate Fabricated steel (API type)
Fasteners Alloy steel
Optional materials
  • Duplex stainless steel
  • Super duplex
  • Alloy 20
  • Monel
  • Hastelloy
  • Special alloys for sour or corrosive service
Applications
CENTFOS BB2 pumps are widely used for:
  • High-pressure refinery services
  • Hydrocarbon processing
  • Crude oil transfer
  • Pipeline booster stations
  • Chemical processing plants
  • Offshore platforms
  • LNG / LPG facilities
  • Power plants
  • Petrochemical plants
  • Injection systems
Advantages
  • Suitable for very high pressure service
  • High mechanical reliability
  • Excellent rotor stability
  • Long operating life
  • Reduced vibration levels
  • API-compliant heavy-duty design
  • Handles severe operating conditions
  • Ideal for critical applications