Marelli VS6 vertical multistage, semiaxial bowl, radially split case, submersible centrifugal process pump

The VS6 Type ring section impeller is ideal for pumping fluids at medium and high pressures.

The FGB/TKVB pumps are ideal for pumping fluids at medium and high pressures.  They are manufactured in materials selected for each particular application, all included within table H1 of the API 610 standard. Manufacturing processes guarantee the highest quality level and include rotor dynamic balance, hydrostatic and performances tests, measuring flow, head efficiency, NPSH, vibrations and the most rigorous quality control. Multistage centrifugal pumps up to 14 stages (standard construction), mounted in series separated and placed into perpendicular elements to the shaft rotation.

  • Flows to 3,100 gpm (700 m³/hr)
  • Heads to 1,200 ft (400 m)
  • Maximum Working Pressure to 40 kg/cm2
  • Temperature Range -125 to 482°F (-80 to 210°C)


  • Refineries
  • Desalination plants
  • Process charge
  • API basins
  • Condensate extraction
  • Tank farms
  • Tank fluid transfer
  • Petrochemical plants
  • Fertilizers
  • Oil fields and terminals
  • Off-shore and on-shore installations
  • Reverse osmosis
  • Synfuels
  • Paper mills
  • Other intensive high-pressure services

Proven to be reliable, efficient and long-lasting, Marelli VS6 pumps provide a number of operational benefits for process engineers and plant operators:

  • API-682 mechanical seal or stuffing box options
  • Flexible coupling
  • Constant level oiler
  • Thrust bearing
  • Suitable with 60 Hz and 50 kW motors
  • Suction flange arranged horizontally towards left hand side
  • Discharge flange radially upwards from coupling side
  • Ring section impellers with wear rings

US 60 Hz

  • Heads to                                                  1,150 ft
  • Flows to                                                   13,209 gpm
  • Standards                                               API 610 VS6
  • Maximum Motor Power                           1,341 HP
  • Temperature Range                                -22 to 482°F
  • Maximum Case Working Pressure          189 psi
  • Maximum Suction Pressure                     Flooded
  • Differential Head                                      656 ft
  • Maximum Viscosity                                   Consult factory
  • Mounting Configuration                           Submersible vertical
  • Seal Configurations                                 API 682

Metric 50 Hz

  • Heads to                                                  350 m
  • Flows to                                                   3,000 m3/hr
  • Standards                                                ISO 13709
  • Maximum Motor Power                           1,000 kW
  • Temperature Range                                -22 to 250°C
  • Maximum Case Working Pressure         13 bar
  • Maximum Suction Pressure                     Flooded
  • Differential Head                                      200 m
  • Maximum Viscosity                                 Consult factory
  • Mounting Configuration                        Submersible vertical
  • Seal Configurations                                 API 682
Pressure CasingCarbon Steel (A216 WCB)12% CHR316 AUSDuplex
ImpellerCast IronCarbon Steel12% CHR316 AUS12% CHR316 AUSDuplex
Wear RingsCast Iron12% CHR HardenedHard-faced 316 AUS12% CHR HardenedHard-faced 316 AUSHard-faced Duplex
ShaftCarbon SteelAISI 4140316 AUS12% CHR316 AUSDuplex
Bearing HousingCarbon Steel (A216 WCB)
Base GasketAUS, Spiral Wound316 AUS Spiral WoundAUS, Spiral Wound316 AUS, Spiral WoundDuplex SS Spiral Wound

About Sundyne

Sundyne is the world leader in delivering low-flow, high-head, integrally geared centrifugal pumps and compressors, sealless magnetic drive pumps and diaphragm gas compressors. Sundyne’s precision-engineered, highly reliable, safe & efficient pumps and compressors are used in chemical, petrochemical, hydrocarbon, hydrogen, carbon capture, renewable fuels, power generation and industrial applications. Sundyne pumps and compressors are available in API, ANSI/ASME, ISO, and other industry compliant designs.