Backflow preventer R 3/4, brass

Backflow preventer ¾“, DVGW certified 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". Type of installation: 1 Technical Data: Connection: R 3/4" Length: 153 mm Kvs Value: 6.0 Opening pressure A: 0.5 bar Operating pressure: max. 16 bar Operating temperature: max. 40°C DVGW test number: 570 V more