N-GEN nitrogen generators are used to extract the available nitrogen in the atmospheric air and separate it from other gases. Nitrogen generation systems fall into two broad categories: Pressure Swing Adsorption (PSA) and Membrane technologies nitrogen generators.

During the PSA process, compressed air enters a molecular sieve bed, which inhibits nitrogen that passes through as a product gas, but adsorbs other gases.

The sieve releases the adsorbed gases to the atmosphere when ambient pressure restores. Subsequently, the bed will eject nitrogen before fresh compressed air enters for a new production cycle.

In order to ensure a constant product flow, N-GEN nitrogen generators use two molecular sieve beds, which alternatively switch between the adsorption and regeneration phases.