PSA Oxygen Plants 1)Oxygen output (Nm3/h): 50, 150, 200, 300, 400, 600, 800, 1,000, 1,500, 2,000 2) Oxygen purity: 90 ... -93% PSA Oxygen Plants1) Oxygen output (Nm³/h): 50, 150, 200, 300, 400 ... , 600, 800, 1,000, 1,500, 2,0002) Oxygen purity: 90 ...