Separation between mains water and processed water

Separation between mains water and processed water

The DVGW-certified RAINMASTER Favorit rainwater system  features the required “air gap” separating mains water from rainwater. The so-called “air gaps AA and AB” are the only ones approved for supply of back-up mains water during water shortages, as per the European standard EN1717. Regulations state that mains water and processed water should never come in contact with each other for reasons of hygiene. In this sense, the RAINMASTER Favorit complies with the worlds highest safety standards.

Freier Auslauf RMF
Mains water top up with “air gap AB”, regarding EN1717
1: Mains water inflow 3: Maximum water level
2: Overflow opening 4: Air gap
Factory tested

Factory tested

Each RAINMASTER Favorit is tested in the INTEWA factory, situated in Aachen, Germany, for their functionality, reliability, and electrical and plumbing safety, leak-proof and output values. After passing the quality test, a separate test report is generated for each unit before it is dispatched.

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