The Chaipattana Aerator Model RX-3 is an apparatus designed as a machine to distribute air under water by means of eight pipes around a vertical axis. These pipes can turn in a circular motion to thoroughly disperse air. 

   The experiment resulted in an oxygen evacuation of 0.75 kilogram/horsepower/hour. The aerator was tested at or was installed at at Wat Bovornnives Wiharn and at Pra Mongkut Klaa Hospital.