- POPTR-I (300 rpm) POPTR-I : PowerMix : Dry-installed mixer (300 rpm) Dry-installed mixer for waste water treatment plants, biogas plants and various industries Can be installed in steel and concrete tanks Five motor sizes from 5.5 to 18.5 kW Capacity up to approx. 6,650 m³/hour 300 propeller revolutions/minute Axial thrust from 1400 N to 5000 N Download brochure on this product (pdf) Dansk English Deutsch Français American