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TransFluid – KSL: Variable Fill Fluid Couplings

Transfluid has designed their KSL series variable fill fluid coupling to overcome problems experienced at “start-up” and “speed variation” operation for medium and high power machines driven by electric motors and internal combustion engines.

TransFluid - KSL

Extremely efficient performance is achieved operating the fluid coupling KSL’s very simple and effective principle. Oil, which is the power medium, is pumped from a sump to the hydrodynamic coupling circuit, where it is finally “drained off” through a series of orifice plugs, back into the sump.


  • Ease of Maintenance
  • High Efficiency
  • Overload Protection
  • Soft Start
  • Torque Limiting
  • Variable Speed


  • Centrifugal Pumps
  • Conveyors
  • Compressors
  • Fans & Blowers
  • Volumetric Pumps


  • Concrete and Construction
  • Marine
  • Mining and Heavy Industries
  • Oil and Gas
  • Renewable Energy
  • Transportation
  • Wastewater Management


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