The 3P Filter-Collector fits in the downpipe where rainwater enters the top and into a filter cartridge. Any leaves and dirt get washed down the downpipe, while the filtered water is diverted to your water tank. The filter cartridge is removable without having to de-mount the whole Filter-Collector, and is largely self cleaning under most conditions.
Once the water tank is full, the Filter-Collector acts as an automatic overflow. It can also be switched off to stop water collection during winter for example.
The Filter-Collector is designed to last, made of impact resistant UV stabilised durable plastic, and is completely frost and weather resistant. There are no moving parts to go wrong and the stainless steel filter mesh will not rust.