The Sundyne LMV-801S is an API-685, vertical inline, single stage, overhung sealless magnetic drive pump ideally suited for high-head, low-flow liquids.

The Sundyne LMV-801S is an API 685, vertical inline, single stage, overhung sealless magnetic drive pump that is ideally suited for high-head, low-flow liquids required in today’s refinery processing, chemical processing and midstream industry services.  The LMV-801S is part of Sundyne’s direct-drive line of pumps that offers reliable performance in a compact vertical design.  

Combining Proven Sundyne Hydraulics with Pioneering Magnetic Drive Technology:
The LMV-801S combines the industry standard hydraulics of the Sundyne direct-drive line of pumps with the magnetic drive technology pioneered by Sundyne HMD/Kontro more than 70 years ago.  It is built to comply with both API-685 and API-610 standards, and is specifically engineered to eliminate emissions and improve personnel safety without compromising the time-proven production hydraulics of Sundyne direct-drive pumps.   

Proven Performance Coverage:
The LMV-801S sealless pump utilizes the same hydraulics as the traditional line of LMV-801 direct-drive pumps – making it easy to upgrade to a safe sealless pump design, or commission new units without compromising existing production.

   ♦ Flows to 380 gpm (86 m³/hr)

   ♦ Heads to 720 ft (220m)

Worry-Free Conversion:
The LMV-801S is dimensionally interchangeable with the traditional mechanically sealed LMV-801 (OH3/5), and can be easily dropped into existing pipework - making this sealless upgrade possible without the need to modify piping and foundation layouts.  Additionally, a plug-in version of the pump is available, enabling customers to swap out the mechanical seal drive end with the new sealless option without disconnecting the existing LMV-801 casing and diffuser from the piping.

The LMV-801S delivers maximized up-time, reduced maintenance costs and optimized productivity over the lifecycle of the unit.  Its sealless design offers no seals that leak, making it safe and reliable for handling hazardous liquids.  

Customers in the oil refining and petrochemical industries rely on Sundyne pumps for their high-head, low-flow capabilities, and for their ability to safely handle difficult or hazardous applications.  The LMV-801S provides the benefits of a sealless pump, the reliability of Sundyne hydraulics all in a compact package.




Performance Envelope - 60Hz

Performance Envelope 50 Hz


Heads To  0 to 720ft 0 to 220m
Flows To  20 to 380gpm 4.5 to 86m3/hr
Max Power  0 to 100hp 0 to 75kW
Temp Range  -40 to 400°F -40 to 205°C
Number of Stages  One
Max Case Working Pressure  580 psi 40 bar
Speed Range  1,750 to 3,500rpm-60Hz 1450 to 2,900rpm-50Hz
Materials of Construction  Carbon Steel, 316 SS, Duplex
Bearing Materials Available Silicone Carbide
Hydrotest Pressure  870 psi 60 bar
Max Viscosity  200 cSt
Industry Standard  API 685 vertical inline single stage overhung sealless magnetic drive pump
Solids Range  Clean liquids only
Motor Details  NEMA C Face Mounted
Mounting Configurations  Close Coupled
Seal Configurations Available  Sealless
Available Inducer  Yes
Available Flanges  600# RF
Pump Case Corrosion Allowance  1/8 inch (3.2mm)
Suction and Discharge Size  3" x 2"

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.
Centrifugal High Head, Low Flow Pumps
Sundyne wrote the book on High-Head, Low-Flow pumps over 50 years ago and everyone else has been playing catch up ever since. Sundyne Pump models are available in single and multi-stage configurations with small, compact footprints.
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.

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.

  • Polymers
  • Production
  • Conventional Boiler
  • Refining
  • Auxillary
  • Oil and Gas
  • Power Generation
  • Water Resources
  • Water Treatment
  • Chemical Processing
  • General Industry
  • Combined Cycle
  • Water Supply and Distribution