As the compressors supply pressurized air to the PSA, a series of valves and
filters in the system controls the flow of clean, dry air into each of the
adsorber beds. Valves also connect the beds to two mufflers that allow the
waste gas to be vented from the beds. The oxygen concentrator uses in its
adsorber vessels an inert ceramic material called molecular sieve to separate
compressed air into the oxygen and the other gases. The unique properties of
molecular sieve allow it to attract, nitrogen physically from air under pressure.

                                                                                                               
Oxygen analyzers continuously monitor the purity of oxygen and provides an alarm in case of low purity. The entire oxygen generating process is completely
regenerative, which makes it both reliable and virtually maintenance-free.