Otto Graf GmbH
Plastic Products
Tel. +49 7641 589-0
Fax +49 7641 589-50
Carl-Zeiss-Straße 2-6
DE-79331 Teningen, Germany

Mains water backfeed

Mains water backfeed

A device which automatically assures the mains water supply if the water in the cistern is at a low level. A device installed in rainwater systems which is used to refill with mains water, especially after lengthy dry periods. DIN EN 1717 must be complied with for mains water backfeed.

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