Translations:Pumpen, Betriebs- und Regenwasserwerke/127/en
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Version vom 11. Oktober 2018, 13:05 Uhr von Sabrina (Diskussion | Beiträge) (Die Seite wurde neu angelegt: „*The drinking water must be separated from the non-potable water by an „air-gap“ in order to prevent the backflow of contaminated water into the drinking w…“)
- The drinking water must be separated from the non-potable water by an „air-gap“ in order to prevent the backflow of contaminated water into the drinking water installation through a continuous unhindered free flow path. The distance from incoming drinking water and the max. possible water level on the non-potable side is defined as follows: H ≥ 2 x d (inlet of the drinking water pipe), otherwise min. 20 mm.
- Only the design forms type AA and AB “air-gap” are allowed according to EN1717<ref name="DIN1717">DIN EN 1717</ref>. Non-return valves (check valves), pipe splitters as well as pipe interrupters are not sufficient for separation and are therefore not allowed.
- Double connections on cistern flush toilets are not allowed.
- The “air-gap” must be installed as backwater safe.
