Liquid Dosing for Water Treatment

Transvac has supplied thousands of Ejectors to the water treatment industries. Using liquid as the motive force, Transvac Liquid Jet Pumps can accurately entrain, mix and dilute a secondary liquid, eliminating the need for mechanical dosing pumps and mixers.

In operation, a high velocity jet of pressurised liquid discharged from the motive nozzle produces a region of low pressure in the suction chamber that entrains the secondary liquid. The two streams then thoroughly mix in the throat before the resulting mixture flows through the diverging cone to regain some pressure in order to overcome system discharge heads.

Examples of liquid jet pumps

Examples of liquid jet pumps

Typical Applications

  • Chemical Dosing & Dilution
  • Polyelectrolyte Production
  • Ion Exchange Resins
  • Activated Carbon / Lime
  • Sludge & Slurry Handling
  • Caustic / Acid Dosing
  • Neutralisation Process
  • Blending


  • Simple and reliable
  • No moving parts
  • In-line mixing
  • Custom designed
  • Materials to suit process
  • No maintenance

Single units or complete skid mounted packaged systems are available, each unit is designed to specific process conditions. Standard materials of construction include rubber-lined, PVCu, PP, PTFE, PVFD, hastelloy, titanium, stainless steel and carbon steel. Connections included flanged, screwed, plain, hosetail, bauer and quick-release etc.

Further Info

Case Studies

View our case studies for Oil & Gas, Steam, Water Treatment & Pharmaceutical applications

Case studies for Oil & Gas, Steam, Water Treatment & Pharmaceutical applications