Varisco Self-Priming Pumps

Varisco J Series Self-Priming Centrifugal Pumps

Varisco J Series self-priming pumps are ideal for pumping liquids with solids in suspension. They are for applications where the main feature is the difficulty in priming and are used in industrial,  agriculture, construction and emergency.

  • Drainage
  • Drilling plants
  • Mining
  • Naval
  • Transfer & agriculture

Benefits of Varisco Pumps

  • Rapid self-priming without foot valve. Once filled with water, the pump is automatically primed to a height of 7.5 m.
  • Easy to install: only the suction pipe needs to be immersed in the liquid. The pump can be located above and in a dry place, in the most suitable location for service and control.
  • High resistance to abrasive liquids: turbid, muddy, sandy waters with solids in suspension.
  • Open impeller allowing the passage of solids of large diameter, easy to inspect.


Features of Varisco Pumps

  • Heavy duty casing in cast iron, marine bronze or stainless steel.
  • Easily opened priming, drain and impeller inspection covers.
  • Easy replaceable wear plate(s)
    Available materials:

    • abrasion resistant rubber faced cast iron
    • marine bronze
    • stainless steel
  • Open impeller with solids handling up to 3” (76 mm)
    Available materials:

    • ductile iron
    • marine bronze
    • stainless steel


Self-priming principle: The air is drawn into the pump due to the negative pressure created by the moving impeller and is emulsified with the liquid contained in the pump casing. The air-liquid emulsion is forced into the priming chamber where the lighter air is separated and leaves through the discharge pipe; the heavier liquid drops back down into circulation. Once all of the air has been expelled from the suction pipe, the pump is primed and works like a normal centrifugal pump.



  • JS – Bare shaft
  • JE – Electric motor
  • JP – Pre-assembled for close-coupling
  • JD – Diesel engine
  • JO – Hydraulic motor
  • JT – Water turbine


Product Range

  • 37 models
  • 1 1/2″, 2″, 3″, 4″, 5″, 6″, 8″, 10″, 12″
  • H max – 103 m
  • Q max – 1.200 m3/h