Importance

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Abstract

The invention relates to an adapter (10′) for connecting at least two plastic bottles (A, B), preferably PET bottles, the screw connections (2) of which are screwable into corresponding threaded receptacles (11, 12) of the adapter (10′). In order to produce a compact water purifying or water treatment system, a first flow path (D) is formed in the adapter (10′), which flow path establishes a flow connection for water vapour from a first threaded receptacle (11) to a second threaded receptacle (12), wherein a plastic bottle (A) filled at least partly with waste water is insertable into the first threaded receptacle (11) and an empty plastic bottle (B) is insertable into the second threaded receptacle (12), wherein a second flow path (K) for collecting and discharging condensed water out of the empty plastic bottle (B) is formed in the adapter (10′).

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First Claim