Marelli VS2 vertical mounted, double suction impeller centrifugal pump

The FQ API-610 11th Edition VS2 vertical mounted, double suction impeller centrifugal pumps are highly reliable and ideal for sump applications. Ideal for refining cooling towers, raw water intake, water transfer, irrigation and development.

The FQ sub-family comprises all one stage pumps while the FQX sub-family comprises pumps with several stages, one of them as FQ sub-family inside the bulb volute, and all other stages incorporation alongside the suspension column itself.

  • Flows to 39,600 gpm (10,0000 m³/hr)
  • Heads to 490 ft (150 m)
  • Maximum Case Working Pressure 218 psi (15 bar)
  • Temperature Range -22 to 482°F (-30 to 250°C)


  • Sea water intake
  • Desalination plants
  • Water reservoir
  • Cooling towers
  • Industrial applications
  • Petrochemical
  • Refineries
  • Tank farms for Oil & Gas
  • API tanks
  • Waste water treatment plants

Marelli has more than 50 years of experience in centrifugal pump design, development, manufacturing and service around the world.  Vertical suspended centrifugal pumps are a core product family developed under API610/ISO 13709, latest edition standards.

Double suction vertical suspended centrifugal pumps FQ/FQX, improve the hydro-mechanical performances compare to the traditional vertical pumps, saving costs in their preventive maintenance and overhaul, to help the hydraulic management in medium and big flow applications.

US 60 Hz

  • Heads to                                                  490 ft
  • Flows to                                                   39,600 gpm
  • Standards                                               API 610 VS2
  • Maximum Motor Power                           2,000 HP
  • Temperature Range                                -22 to 482°F
  • Maximum Case Working Pressure          218 psi
  • Maximum Suction Pressure                     Flooded
  • Differential Head                                      492 ft
  • Maximum Viscosity                                   Consult Factory
  • Mounting Configuration                          Submersible Vertical
  • Seal Configurations                                 API 682

Metric 50 Hz

  • Heads to                                                  150 m
  • Flows to                                                   10,000 m3/hr
  • Standards                                                ISO 13709
  • Maximum Motor Power                           1500 kW
  • Temperature Range                                -22 to 250°C
  • Maximum Case Working Pressure         15 bar
  • Maximum Suction Pressure                     Flooded
  • Differential Head                                      150 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.