Venturi injectors are a highly efficient way to introduce liquid or gas into water. They are ideal for dosing chemicals, aerating water, dosing ozone, fertilizer and irrigation.


Venturi irrigation application. Cross-section of Venturi Injector. Wassertec - Engineered Ozone Solutions for water and air treatment. Ozone Generators. Mazzei venturi injectors


venturi irrigationapplications. Venturi Injector. Wassertec - Engineered Ozone Solutions for water and air treatment. Ozone Generators. Mazzei Venturi Injectors
“Injecting chemicals into a pressurized irrigation system (chemigation) is the most common application for Mazzei Venturi injectors in agriculture. “

How does a venturi work?

Venturis work on a principle of differential pressure.

In short, water flows into the venturi at a higher pressure than that at which it exits. This pressure difference creates a vacuum at the suction port on the side of the device. This sucks air, ozone or liquid into the main water stream. So, the greater the difference in pressure, the greater the vacuum and, with that, the greater the efficiency of mixing.

If sized and installed correctly, a venturi can achieve a gas/water ratio of 1:1. (i.e. inject 1 litre of air/ozone into every litre of water that passes through it). For Liquid dosing this ratio is maximum 1:10 (i.e. inject a maximum of 1 litre of chemical into every 10 litres of water).

Venturis come in a number of different sizes. Size is determined not by the size of the pipeline into which it is installed, but rather by the pressure and flow rate of the water.