The 1 ”24V filling kit is used to refill your rainwater recovery system with potable water. The rainwater tank is filled with potable water via a solenoid valve as required. This ensures that the installation is ready for operation at all times. The control is regulated by a float switch located in the rainwater tank. The solenoid valve opens or closes the flow depending on the signal from the float sensor. A non-return valve (not included) installed downstream of the filling kit prevents rainwater from entering the water supply.