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Eductor nozzles, and when they should be employed

Home / Eductor nozzles, and when they should be employed
09/03/2020 2:04:00 PM

Eductor nozzles, also known as jet pumps, venturi pumps or ejectors, are the easiest way to mix, heat or pump different types of liquids, gases and solids either in-line or in-tank in the petrochemical and other industries. Eductor nozzles are also used to:

  • Clear sludge
  • Prevent sediment
  • Liquid draining
  • To heat fluids in-line
  • Pump in hazardous areas where electric pumps can’t be used
  • Create movement in liquid
  • Agitate for particle suspension
  • Dilution of acid or liquids
  • General mixing
  • Breaking up a grease layer
  • Fire protection water storage tanks
  • To inject and mix chlorine, water additives, chemicals, acids, paint, coatings, platings, phosphate, dyes, pulp, fertilisers and slurries.
  • To evacuate gases
  • To evacuate vessels
  • Create a vacuum
  • Boost suction pressures
  • To scrub fumes from a gas

When comparing eductor mixing nozzles with electric pumps, they have many advantages; they are small, are low in cost, and have static parts that do not move. This prevents tearing and leaking of the nozzle. Eductor nozzles are also very easy to install and clean and do not need any lubrication. 

A very popular and economical eductor mixing nozzle manufactured in USA is the TurboMix™. Ideal for circulating liquids in closed and open tanks, it can be used to agitate a combined fluid, if the mixture has many solids that are lighter or heavier than the liquid, has liquids of two different densities, or has mixtures of oil and water based compounds. 

The induction effect through the TurboMix™ nozzle achieves greater mixing efficiency using smaller pumping capacity than mechanical mixing methods, with discharge plumes combining motive and entrained liquid. Only a pump and submerged TurboMix™ nozzle is required to reduce system complexity, capital cost, and energy use. As there are no moving parts, TurboMix™ nozzles are durable and virtually maintenance-free.

How the TurboMix eductor nozzle works

the TurboMix is submerged inside the tank. Motive liquid is pumped under pressure through the discharge orifice. The jet of motive liquid enters the venturi section, entraining additional liquid from the tank and moving it through the venturi. A discharge plume of combined motive and entrained liquid exits the venturi and continues the mixing and agitating action for a substantial distance. 


The operation of the TurboMix creates a multiplying effect on fluid flow. Depending on the model and the operating pressure, the volume of liquid discharged from the TurboMix will be 4-5 times greater than the volume of motive fluid pumped. This highly efficient operation reduces energy use and saves money.

Standard materials for the TurboMix™ eductor nozzles are brass, 316 stainless steel, carbon steel, and glass filled polypropylene (plastic), with many material options available from Bete’s in-house foundry.

Spray Nozzle Engineering is the exclusive supplier of BETE industrial nozzles in Australia and New Zealand. The team of experts and engineers can assist with any project and application where eductor mixing nozzles are required.

Motive flow rate calculator select the most suitable eductor for your application

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