A Venturi Injector can be used with any of our products to create a vacuum effect during the ozone application. The injector can be paired with any of our generators but is needed specifically for the SP and Aquatic units. For the use of this venturi, it is recommended to use a 1.5" PVC pipe. This vacuum allows for any additive material to be drawn through the suction port and mix during the application process. This process combines two different substances to create a fluid mix of the two, then releases the combined products through the outlet side.