The VSMK and VSMKD are API 610 (VS4) submersible pumps. Flows to 7000 gpm (1,600 m³/hr), Heads to 1,180ft (360m)

The VSMK and VSMKD are API-610, 11th edition, VS4 vertical inline shaft sump pumps for submersible applications. Features include column bushing/flushing from external source. A fully enclosed shaft design protects the pump for abrasive and aggressive applications. Perfectly suited for refining applications including oily water, hydrocarbon, topping, gascon, coker, amine and acid water. Sundyne VS4 style pumps are also used in tank farms, petrochemical plants, oil fields, oil terminals and waste treatment plants.

-Flows to 7,000 gpm (1,600 m³/hr)
-Heads to 1,180ft (360 m)
-Temperature up to 752°F (400°C)
-Maximum Case Pressure: 580psi (40bar)



Performance Envelope 60 Hz


Performance Envelope 50 Hz



Heads To  20 to 1,180ft 4 to 360m 60HZ: 6 to 250m
Flows To  4 to 7,000gpm 8 to 1,600m3/hr 60HZ: 10 to 1,000m3/hr
Max Power  939 700
Temp Range  -22 to 752°F -30 to 400°C
Number of Stages  1.0
Max Case Working Pressure  580 psi 40 bar
Max Suction Pressure   Flooded
Differential Head  820 ft 250 m
HP Dependent on Diff. Head  939 hp 700 KW
Standard Delivery  Consult factory
Speed Range  0 to 3,500rpm-60Hz
Materials of Construction  Meets H1-API 610, 10th edition
Bearing Materials Available  Angular contact bearing
Hydrotest Pressure  870 psi 60 bar
Max Viscosity  Consult factory
Industry Standard  API-610 and ISO 13709
Mounting Configurations  Submersible Vertical
Number of Available Hydraulics... 57.0
Seal Configurations Available  API-682
Available Flanges   300# / 600#
Pump Case Corrosion Allowance  0 .118inch (3mm)
Suction and Discharge Size   up to 10" / 12"
API Plans for Sundyne Pumps  All API-682 configurations

Centrifugal API 610 10th Edition VS4 and ISO 13709
The API Pump Type VS4 is a vertically suspended, single-casing volute line-shaft driven sump pump.

Marelli Process Pumps
Marelli Pumps are API 610, 11th Edition and ISO 13709, DIN compliant.

  • Washdown
  • Ethanol
  • Emergency Feedwater
  • Organic Chemicals
  • Diesel Fuel
  • Circulating Water
  • Sulfur Sweetening
  • Wet Pit
  • Hydrocracking
  • Brine Injection
  • Well
  • Petrochemical Processing
  • Mine Dewatering
  • Butane Transfer
  • Desalination
  • Fertilizer
  • Water Boosting
  • Benzene Reduction
  • General Processing Industry
  • Washing Systems
  • Sea Water Intake
  • Oil Production
  • Petroleum Production and Refining
  • OEM
  • Gasoline
  • Gas Production
  • Aromatics
  • Biofuels
  • Acid Transfer
  • Utility
  • Brine Disposal
  • Decoking
  • Visbreaking
  • Alkylation
  • Inorganic Chemicals
  • Crude Oil Transfer
  • Seawater Reverse Osmosis SWRO
  • Heater Drain
  • Fuel
  • Cargo Loading and Unloading
  • Cooling Systems
  • Drainage
  • Biodiesel
  • Industrial Waste
  • Isomerization
  • Intake
  • Amine Treating
  • Offshore
  • Dewatering
  • Catalytic Cracking
  • Synthetic Fuels
  • Chemical Transfer
  • Reverse Osmosis
  • Sour Water
  • Water Supply
  • Crude Oil Loading
  • Water
  • Water Treatment
  • Sulfur Compound Extraction
  • Chemical Processing
  • Waste Processing
  • Dehydrogenation
  • Metal Pickling
  • Tank Farm Transfer
  • Hydrotreating
  • Recycling Services
  • Propane Transfer
  • Industrial Plant Services
  • Cooling Tower
  • Sea Water
  • Flue Gas Desulphurization
  • Cooling Water
  • Water Pollution

API American Petroleum Institute
Sundyne has a wide range of heavy duty centrifugal pumps that are compliant with American Petroleum Institute API-610, 10th and 11th Edition (OH1, OH2, OH3, OH4 OH5, OH6, BB1, BB2, BB3, BB5, VS1, VS2, VS4, VS6) and API-685 sealless magnetic drive standards Our customers in the oil refining and petrochemical industries have for years turned to Sundyne pumps for their high-head, low-flow services and other difficult or hazardous applications.
ISO International Standards Organization
Sundyne centrifugal pumps that are compliant with the International Organization for Standardization ISO 13709 standards for oil and gas production, refining, chemical and petrochemical operations.

  • Polymers
  • Production
  • Ground Water Development and Irrigation
  • Primary Metals
  • Refining
  • Auxillary
  • Oil and Gas
  • Power Generation
  • Water Resources
  • Water Treatment
  • Chemical Processing
  • Mining
  • General Industry
  • Combined Cycle
  • Water Supply and Distribution
  • Acid Transfer
  • Pipeline
  • Gas Processing
  • Slurry Processing