The PROZONE PZVII-1 ozone injector was developed by the US prozone Company for use in private pools up to 75 cubic meters. It can also be used in private jacuzzi. Also known as PZVII-1, it has a complete fitting kit for use in and install in private pools and jacuzzi, which includes injectors, ozone and ozone valves, and equipment required to create a By Pass line.