The GSPX magnetic drive pump is a multi-stage, API 685, BB5 design using between bearings design for the second and third stage impellers. This pump that is ideal for oil and gas installations, plus chemical and petrochemical applications.

Heads to 1400 ft (295m)
Flows to 440 gpm (62 m³/hr)
Temperature Range: -40 to 500 F 
      (-40 to 260 C) Standard
Max Case Pressure up to 725pia (50 Bar)

Based on our proven magnetic drive, it is available in 2 or 3 stages with two diffuser based hydraulic options. The GSPX produces higher differential pressures than our single-stage sealless models, while offering reliable, safe, leak-free handling that you expect from our flagship API-685 sealless magnetic drive pumps.

Performance Envelope - 60Hz

Performance Envelope 50 Hz


Heads To  0 to 1,400ft 0 to 295m
Flows To  0 to 440gpm 0 to 85m3/hr
Max Power  0 to 167hp 0 to 125kW
Temp Range  -40 to 401°F -40 to 260°C Higher temps with options.
Number of Stages  2 or 3 stages
Max Case Working Pressure  580 psi 40 bar 725 psi (50 bar) available
Max Suction Pressure  Depends on duty, see max working pressure.
Differential Head  1,400 ft 295 m
HP Dependent on Diff. Head  167 hp 125 kW
Standard Delivery  8-12 Weeks
Materials of Construction  S-5, A-8, alternative materials available on request.
Bearing Materials Available Silicon Carbide internal journal and thrust bearings
Hydrotest Pressure  870 psi 60 bar 1087 psi (75 bar) available
Max Viscosity  200 cst
Industry Standard  API-685, BB5
Solids Range  maximum of 5% w/w with less than 150 microns
Motor Details  To suit duty power
Mounting Configurations  Separate Mount
Number of Available Hydraulics... 4 (2 or 3 stage K9, 2 or 3 stage K11)
Available Inducer  Yes
Available Flanges  ANSI B16.5 RF, 300lb standard. 600lb option.
Pump Case Corrosion Allowance  0.118 inch (3 mm)
Suction and Discharge Size  3 inch or 2 inch suction, 2 inch discharge, 3/4 inch flanged drain connection.

Centrifugal Multi Stage Heavy Duty Process Pumps
Sundyne Corporation manufactures a variety of centrifugal multi-stage pumps ideal for most heavy duty process applications.
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 Horizontal End Suction Metallic Centrifugal Pumps
Sealless magnetic drive metallic horizontal end suction metallic centrifugal pumps meet industry chemical process standards. They are highly reliable for high temperature, high viscosity, high pressure and hazardous chemical process applications.

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.

  • Petrochemical Processing
  • Petroleum Production and Refining
  • Offshore
  • Chemical Processing

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.

  • Refining
  • Oil and Gas
  • Chemical Processing