Vertical Suspended Double Casing Pump (API 610 VS2)

Model: CVM

The CENTFOS-CVM API 610 VS2 pump is a vertical suspended, double-casing centrifugal pump designed for high-temperature and hazardous process services. Its double casing construction improves pressure containment and safety, while the vertical shaft design ensures stable operation. Engineered for reliability and long service life, it performs efficiently in demanding industrial environments.

API 610 VS2 Pump

Introduction

The CENTFOS-CVM, API 610 VS2 pump is a vertical suspended, double-casing centrifugal pump designed in accordance with the latest edition of API 610 for high-temperature, hazardous, and critical process services.

The VS2 configuration features a double casing construction, consisting of an inner pressure casing and an outer containment casing, combined with a vertical suspended shaft design. This arrangement provides enhanced pressure containment, improved mechanical stability, and increased operational safety for severe-duty services.

CENTFOS VS2 pumps are engineered for reliable performance in demanding applications where high reliability, long operating life, and safe handling of hazardous fluids are essential.

Key Features
  • Designed according to API 610 (VS2 type)
  • Vertical suspended construction
  • Double casing design
  • High-pressure containment capability
  • Heavy-duty shaft design
  • Replaceable wear rings
  • Cartridge seal compatible
  • API 682 seal chamber compatibility
  • Low shaft deflection
  • Line shaft supported rotor
  • Suitable for deep sump installations
  • Continuous-duty rated
  • VFD compatible
  • Customizable column length
  • Designed for severe service conditions
Technical Specifications
Parameter Range
Flow Rate Up to 4,000 m³/hr
Head Up to 350 m
Pressure Up to 100 bar
Temperature −46°C to +450°C
Speed Up to 3,600 rpm
Setting Depth Up to 18 m or more
Stages Single or multistage
Seal Type Mechanical seal
Mounting Vertical mounting plate
Design Characteristics
Hydraulic Design
  • Diffuser or volute hydraulic arrangement
  • Optimized impeller geometry
  • Balanced hydraulic forces
  • High efficiency performance
  • Low NPSHr characteristics
  • Smooth internal flow passages
Mechanical Design
  • Double casing construction for pressure containment
  • Rotor supported by line shaft bearings
  • Heavy-duty shaft construction
  • High stiffness shaft design
  • Designed for high temperature and pressure
  • Precision-machined rotating components
  • Long bearing life
Seal System Design
  • API 682 compliant seal chamber
  • Cartridge seal compatible
  • Suitable for hazardous fluids
  • Large bore seal housing
  • Supports multiple flush plans
  • Designed for high-pressure sealing systems
Installation Advantages
  • Motor remains above fluid level
  • Suitable for deep tanks or pits
  • Eliminates suction piping
  • Reduced NPSH requirements
  • Compact footprint
  • Easy removal for maintenance
Construction & Materials
Component Standard Material
Outer Casing Carbon steel
Inner Casing Alloy 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
  • Sour service alloys
Applications
CENTFOS VS2 pumps are widely used for:
  • Refinery sump service
  • Hydrocarbon storage terminals
  • Chemical processing plants
  • Offshore platforms
  • LNG / LPG facilities
  • Power plants
  • Tank farm transfer
  • Injection systems
  • Cooling water systems
  • Hazardous liquid handling
Advantages
  • High pressure containment capability
  • Enhanced operational safety
  • Long service life
  • Reliable vertical design
  • Suitable for severe service
  • API-compliant heavy-duty construction
  • Low vibration operation
  • Ideal for critical applications