The Indirect-supply system is designed for WCs, washing machines, irrigation, and outdoor cleaning. Rainwater is collected from the roof and filtered before entering the underground tank with a pressure-sensitive pump. When a valve is opened, water is pumped under pressure and gravity-fed from a header tank. The system automatically replenishes the header tank with rainwater and stops pumping when levels are low. In the absence of rain, a floating ball valve controls the top-up of mains water. For garden irrigation, an outside tap can be connected directly to the pump, ensuring a direct pump pressure supply. Note: When the tank is low on rainwater, the outside tap will not receive mains water top-up.