Translations:Pumpen, Betriebs- und Regenwasserwerke/132/en

This form of drinking water backup is controlled e.g. by a RAINMASTER D. Due to the open pipe connection between the cistern and building the installation of the system must be considered with the backwater level from the sewer as well as cistern so that the backwater is prevented from entering the building. The "air-gap" for supplying drinking water must be at least 20 cm above the related backwater level, which is usually only the case when the system equipment is installed on the ground floor.