... periods: T=10~20min Heatless Purge Desiccant Air Dryer:Features:1) Consistent outlet pressure dew points A, ... time, enough to dry saturated air at the dryer inlet to the desired dew point.B, 30% ... channeling. 2) Minimum purge air use, less than 12%, the lowest in the industry.A,Excellent designing tower, ... match purge air use to the demand on the dryer. 3) Long desiccant lifeA,Suitable tower sized ...