PSA NC-GEN compact nitrogen generators extract the available nitrogen in ambient air from other gases by applying Swing Pressure Swing Adsorption (PSA) technology. During the PSA process the compressed, purified ambient air leads to a molecular sieve column, which allows nitrogen to pass through as a product gas, but adsorbs other gases. The sieve releases the adsorbed gases into the atmosphere when the outlet valve is closed and the column pressure returns to ambient pressure. The column will then be cleaned with nitrogen before fresh compressed air is introduced for a new production cycle. In order to ensure a constant product flow, PSA compact nitrogen generators use two molecular sieves, which alternate between the adsorption and regeneration phases.