Between Bearing Axially Split Multistage Pump (API 610 BB3)

Model: CFDM

The CENTFOS-CFDM API 610 BB3 pump is a between-bearing, axially split, multistage centrifugal pump designed for high-pressure refinery, pipeline, and offshore services. Its robust BB3 configuration provides high head capability, low shaft deflection, and reliable hydraulic performance, ensuring durable and efficient operation in demanding continuous-duty industrial applications.

API 610 BB3 Pump

Introduction

The CENTFOS-CFDM, API 610 BB3 pump is a between-bearing, axially split, multistage centrifugal pump designed in accordance with the latest edition of API 610 for high-pressure refinery, pipeline, offshore, and critical process applications.

The BB3 configuration is specifically engineered for services requiring high head, stable hydraulic performance, and exceptional mechanical reliability. Its horizontally split casing and between-bearing rotor construction provide excellent structural rigidity, low shaft deflection, and simplified maintenance access, making it ideal for severe-duty continuous operation.

CENTFOS BB3 pumps combine advanced hydraulic design, heavy-duty construction, and precision engineering to ensure dependable performance in demanding industrial environments.

Key Features
  • Designed according to API 610 (BB3 type)
  • Between-bearing multistage configuration
  • Horizontally axially split casing
  • High head capability
  • Low shaft deflection design
  • Heavy-duty rotor assembly
  • Cartridge seal compatible
  • API 682 seal chamber
  • Replaceable wear rings
  • Long bearing life
  • Balanced axial thrust
  • Designed for continuous operation
  • Suitable for VFD operation
  • Easy maintenance via top casing removal
Technical Specifications
Parameter Range
Flow Rate Up to 4,000 m³/hr
Head Up to 1,000 m
Pressure Up to 200 bar
Temperature −46°C to +450°C
Speed 1,500 / 3,000 rpm
Stages Up to 12
Impeller Type Single / Double suction first stage
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
  • Multistage impeller arrangement for high head
  • Optimized vane profiles for efficiency
  • Balanced hydraulic thrust
  • Stable flow characteristics
  • Low NPSHr first-stage impeller
  • Smooth internal flow passages
Mechanical Design
  • Rotor supported by bearings at both ends
  • Heavy-duty shaft with minimal deflection
  • High stiffness rotor assembly
  • Long bearing life (>25,000 hours L10)
  • Precision-machined components
  • Designed for high pressure service
Seal Chamber Design
  • API 682 compliant seal chamber
  • Cartridge seal compatible
  • Suitable for hazardous fluids
  • Large bore seal housing
  • Multiple flush plan compatibility
Maintenance Advantages
  • Axially split casing allows inspection without disturbing piping
  • Easy access to internal stages
  • Simplified maintenance
  • Reduced downtime
  • Quick inspection capability
Construction & Materials
Component Standard Material
Casing ASTM A216 WCB
Impellers 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 service
Applications
CENTFOS BB3 pumps are widely used for:
  • High-pressure pipeline transport
  • Boiler feed service
  • Crude oil transmission
  • Refinery charge pumps
  • Injection systems
  • Offshore platforms
  • Power generation plants
  • LNG / LPG facilities
  • Petrochemical processing
  • Water injection systems
Advantages
  • Extremely high head capability
  • Excellent rotor stability
  • Long service life
  • Low vibration levels
  • Reliable continuous-duty performance
  • API-compliant heavy-duty design
  • Ideal for critical services
  • High hydraulic efficiency