Downpipe First Flush Diverters, such as the 90mm and 100mm kits, are installed at each downpipe that supplies water to the tank. They utilise a dependable ball and seat system – a simple automatic system that does not rely on mechanical parts or manual intervention. As the water level rises in the diverter chamber, the ball floats, and once the chamber is full, the ball rests on a seat inside the diverter chamber preventing any further water entering the diverter. The subsequent flow of water is then automatically directed along the pipe system to the tank. Features & Benefits  Simple, automatic, ball and seat system – no mechanical parts or manual intervention needed Prevents sediment, insects, bird droppings and debris from entering the tank Improves water quality, protects pumps and internal appliances from roof contaminants Install at each downpipe that supplies water to the tank Ideal to use in conjunction with a rain head / leaf eater Fits 100mm PVC downpipe Download Installation Guide