Vertical Suspended Single Casing Pump (API 610 VS5)

Model: CVR

The CENTFOS-CVR API 610 VS5 is a vertical suspended, single-casing centrifugal pump for refinery, petrochemical, offshore, and heavy-duty industrial applications. Its bottom-suction, top-discharge design ensures compact installation, stable operation, improved hydraulic efficiency, and reduced NPSH, delivering reliable performance, robust strength, and long service life in demanding environments.

API 610 VS5 Pump

Introduction

The CENTFOS-CVR, API 610 VS5 pump is a vertical suspended, single-casing centrifugal pump designed in accordance with the latest edition of API 610 for refinery, petrochemical, offshore, and heavy-duty industrial applications.

The VS5 configuration features a bottom suction and top discharge arrangement combined with a vertical suspended shaft design. This configuration is particularly suitable for installations where deep pit or sump suction is required while maintaining a compact footprint and stable operation. The vertical orientation eliminates suction piping and improves hydraulic efficiency while reducing NPSH requirements.

CENTFOS-CVR, VS5 pumps are engineered to deliver reliable performance, robust mechanical strength, and long service life in demanding process environments.

Key Features
  • Designed according to API 610 (VS5 type)
  • Vertical suspended construction
  • Single casing design
  • Bottom suction configuration
  • Top discharge arrangement
  • Line shaft supported rotor
  • Replaceable wear rings
  • Cartridge seal compatible
  • API 682 seal chamber design
  • Low shaft deflection
  • Continuous duty rated
  • VFD compatible
  • Customizable setting depth
  • Designed for severe service conditions
Technical Specifications
Parameter Range
Flow Rate Up to 4,000 m³/hr
Head Up to 280 m
Pressure Up to 50 bar
Temperature −46°C to +400°C
Speed Up to 3,600 rpm
Setting Depth Up to 18 m or more
Stages Single or Multistage
Seal Type Mechanical Seal or Packed Gland
Mounting Vertical Mounting Plate
Design Characteristics
Hydraulic Design
  • Bottom suction impeller arrangement
  • Optimized impeller vane geometry
  • Smooth hydraulic passages
  • Balanced hydraulic forces
  • Stable operation across full range
  • Low NPSHr characteristics
  • Suitable for varying process conditions
Mechanical Design
  • Vertical suspended rotor configuration
  • Heavy-duty shaft construction
  • Line shaft bearing support system
  • High stiffness shaft design
  • Precision-machined rotating components
  • Designed for continuous operation
  • Long bearing life
Seal Chamber Design
  • API 682 compliant seal chamber
  • Cartridge seal compatible
  • Suitable for hazardous fluids
  • Large bore seal housing
  • Multiple flush plan compatibility
Installation Advantages
  • Eliminates suction piping
  • Reduced NPSH requirements
  • Compact floor footprint
  • Motor remains above liquid level
  • Simplified piping layout
  • Easy removal for maintenance
  • Suitable for deep sump installations
Construction & Materials
Component Standard Material
Casing Carbon Steel
Impeller SS316 / CF8M
Shaft AISI 4140 / 410 SS
Wear Rings Stainless Steel
Bearing Bushings Bronze / Composite
Discharge Head ASTM A216 WCB
Fasteners Alloy Steel
Optional materials
  • Duplex stainless steel
  • Super duplex
  • Alloy 20
  • Monel
  • Hastelloy
  • Special corrosion-resistant alloys
Applications
CENTFOS-CVR, VS5 pumps are widely used for:
  • Deep sump pumping
  • Refinery services
  • Tank farm transfer
  • Chemical processing plants
  • Offshore installations
  • Cooling water systems
  • Hydrocarbon storage terminals
  • Power plants
  • Utility services
  • Hazardous liquid handling
Advantages
  • Excellent suction performance
  • Reduced cavitation risk
  • Compact vertical design
  • Reliable continuous-duty operation
  • Long service life
  • API-compliant heavy-duty construction
  • Low vibration operation
  • Ideal for severe duty applications