Heatless Purge Desiccant Air Dryer Features: Dew point : -20~ -70 Working pressure:0.6~1.0Mpa Working periods: T=10~20min Heatless Purge Desiccant Air Dryer:Features:1) Consistent outlet pressure dew points A,Rationalizing designed tower, ensure 4.8 second contact time, enough to dry saturated air at the dryer inlet to the desired dew point.B, 30% extra desiccant provide to compensate for natural ...