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3. The Time Period for Pressure Balancing

In the process of nitrogen generation, after one tower finishes adsorption, the compressed air can be fed both from top and bottom into the other adsorption tower which has been re-generated. Then the two towers reach the same pressure. This process is called the pressure balancing. If a proper time of pressure balancing is chosen, it will not only reclaim the energy, but also reduce the impact on the sieve particles. Thus the life span of the sieve is increased. The typical time for pressure balancing should be between 1 to 3 seconds according to the speed of the switching valve.