An API 685 rigidly coupled vertical inline single stage overhung sealless magnetic drive pump.

- Flows to 1,000 gpm (230 m³/hr)
- Heads to 400 ft (120 m)

Requiring minimum floor space due to its exceptionally small foot print, the GSPV OH4 vertical pump meets all of the requirements of API 685, making it ideal for chemical, petrochemical, as well as oil and gas applications, especially those where space is at a premium, such as on offshore oil and gas installations.

Utilizing our significant expertise in meeting API 610 and API 685 standards, the GSPV vertical centrifugal pump avoids the need to accept any deviations. With nine hydraulics and a wide operating envelope of up to 580 psi (40 bar), plus optional design pressures up to 1,450 psi (100 Bar), the GSPV is suitable for many applications.

We have been building sealless magnetic drive pump units for the oil and gas industry since 1983. Our API-685 line of sealless magnetic drive, end suction centrifugal pumps comply with specifications required by the oil, gas, petroleum and heavy chemical industries, including these vertically orientated GSPV units, thus increasing the application scope for this technology.



Performance Envelope, 3500rpm, 60Hz, 2 Pole

1750rpm, 60Hz, 4 Pole Envelope 


Performance Envelope, 2900rpm, 50Hz, 2 Pole

1450rpm, 50Hz, 4 Pole Envelope 



Heads To  0 to 400ft 0 to 120m
Flows To  0 to 1,000gpm 0 to 230m3/hr
Temp Range  -40 to 400°F -40 to 205°C
Number of Stages  1.0
Max Case Working Pressure  580 psi 40 bar 1450psi (100bar) available
Standard Delivery  18-24 Weeks
Speed Range  1450 to 3,500rpm-50Hz
Materials of Construction  Carbon Steel (S-5) and 316 SS (A-8)
Bearing Materials Available Silicon Carbide
Industry Standard  API 685 and API 610 OH4, Replaces BS 4082 Class R
Motor Details  Industry standard
Number of Available Hydraulics... 9
Seal Configurations Available  None-Magnetic Drive Sealless Design
Available Inducer  No
Available Flanges  150#/300# RF
Sizes Available  Two basic frame sizes to suit power requirements

Sealless Centrifugal Pumps API 685
Sealless magnetic drive centrifugal pumps that meet API-685 and API-610 standards. No seals that leak make it safe and reliable. Perfect pumps for difficult to seal, hazardous, and high-value applications for petroleum, heavy duty chemical and gas industry services.
Sealless Magnetic Drive Vertical Inline Pumps
The vertically mounted GSPV inline pump from Sundyne HMD Kontro combines API 685 expertise with the benefits of a sealless pump in a compact package

HMD Kontro Sealless Magnetic Drive Pumps
Sundyne HMD-Kontro sealless magnetic drive pumps meet API-685, ASME / ANSI B73.3 and ISO 2858 standards. They do not leak and are extremely reliable and safe.

  • Light Oils
  • Organic Chemicals
  • Bulk Chemicals
  • Solvents
  • Hydrocracking
  • Tank Car Loading
  • Petrochemical Processing
  • Plastics
  • Butane Transfer
  • Booster
  • Benzene Reduction
  • Chlor alkali
  • Battery Manufacturing
  • Fine Chemicals
  • Petroleum Production and Refining
  • Oxygenates Production
  • OEM
  • Gasoline
  • Aromatics
  • Acid Transfer
  • Corrosive Services
  • Alkylation
  • Inorganic Chemicals
  • Crude Oil Transfer
  • Toxic Services
  • Flammable Liquids
  • Polysilicon
  • Caustics
  • Biodiesel
  • Tank Car Unloading
  • Heat Transfer Fluids
  • Isomerization
  • Amine Treating
  • Offshore
  • Separation
  • Synthetic Fuels
  • Hot Oil
  • Sour Water
  • Bioprocessing
  • Agrochemicals
  • Circulation
  • Chemical Processing
  • Hydrotreating
  • Recycling Services
  • Propane Transfer
  • Edible Oils
  • Sea Water

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.

  • Production
  • Primary Metals
  • Refining
  • Oil and Gas
  • Chemical Processing
  • General Industry
  • Acid Transfer




GSPV magnetic drive sealless vertical inline pumps offer significant advantages and benefits over conventional sealed designs. The GSPV range comprises pumps based on the Sundyne HMD Kontro GS drive, built to API 685 specification, suitable for heavy-duty refining, chemical and petrochemical applications:

  • Vertically mounted design

  • Available in nine hydraulic sizes

  • Small / compact footprint

  • Two basic frame sizes to suit power requirements

  • High degree of interchangeability within frame sizes

  • Commonality minimises spare parts inventory

  • Completely self-draining

  • Conforms to API 685 for sealless pumps

  • Also relevant API 610 requirements

  • Design ensures safe, leak free operation

  • Increased efficiency via low operating costs

  • Minimal spares holding and maintenance

  • No costly seal support systems to specify, install or maintain

  • Reduced specification time and installation costs

  • Silicon carbide internal bearings

  • Various flange options are available as standard

  • Full range of secondary control / containment systems available

  • Wide range of Instrumentation systems available

  • Option of high efficiency ZeroLoss composite shell on large hydraulic sizes