This process consists of two beds filled with carbon molecular sieves (CMS). As the prefiltered compressed air passes through his CMS bed, it produces nitrogen as a production gas. Exhaust gas (oxygen, carbon dioxide, etc.) is released into the atmosphere. When the CMS bed is saturated, this process switches nitrogen regeneration to another bed, but the saturated bed undergoes regeneration by decompression to atmospheric pressure. This ensures a continuous supply of nitrogen to the system.