Topaz Partfill is a rainwater tank make-up valve designed for use in tanks or cysters for partial filling.
The TOPAZ Partfill is used, for example, in rainwater tanks or in tanks that should generally be filled as little as possible with city water. It ensures that in dry seasons the lowest required water level is automatically maintained with a partial fill. This allows the connected systems to continue operating while the tank has the maximum possible capacity for rainwater collection.
Alternatively, the valve/water line can be opened via a differential float valve .