Backflow preventer 1 - red brass with manometer

DIN/DVGW tested for protection of tap water from backflowing treated water. Housing made of brass; both sides with female thread unions; integrated check valve, closing body made of high quality plastic; with manometer and fitted discharge hopper for connecting 40mm plastic pipe or threaded pipe R 1". Technical Data Connection: R 1" Length: 159 mm Kvs value: 8.0 Reaction pressure A: 0.5 bar Operation pressure: max. 16 bar Operation temperature: max. 40°C DVGW number: 571 V more