Venturi Injector are usually used for injecting fertilizer or other chemicals into a pressurized irrigation system (chemigation). This chemigation technology delivers a uniform distribution of chemicals and fertilizers within the irrigation water.
Venturi injectors are a highly efficient way to introduce liquid or gas into water. They are ideal for dosing chemicals, aerating water, dosing ozone and fertigation
The simplest apparatus is a tubular setup known as a Venturi tube or simply a venturi. Fluid flows through a length of pipe of varying diameter. To avoid undue aerodynamic drag, a Venturi tube typically has an entry cone of 30 degrees and an exit cone of 5 degrees.
Venturi tubes are used in processes where permanent pressure loss is not tolerable. As well as where maximum accuracy is needed in case of highly viscous liquids.
Finally a venturi can also be used to mix a liquid with a gas. If a pump forces the liquid through a tube connected to a system consisting of a venturi to increase the liquid speed (the diameter decreases). As a matter of fact short piece of tube with a small hole in it, and last a venturi that decreases speed (so the pipe gets wider again), the gas will be sucked in through the small hole because of changes in pressure. As a result the end of the system, a mixture of liquid and gas will appear.”
