Range: 0,75-3,75... 70 - 3,500 m³/h water 0,2-20... 200- 20,000 m3/h air Connection: flange: DN25... 400 Material: cast steel, steel, stainless steel Pmax: PN 40 bar Tmax: 120°C Accuracy: ± 0,5 % of measured value (water) ± 1,5 % of measured value