... bottom of the "online" tower and flows up through the zeolite molecular sieve, N2, CO2 and H2O gases are preferentially adsorbed by ... one tower produces O2, another tower releases the N2, CO2 and H2O at the same time. Two towers alternate adsorption ... buffer tank, flowmeters, dust filters, pressure regulating valve, throttle, and safety valve etc.6 Oxygen Compressed SystemThe Oxygen Compressed System ...