The DeVilbiss CT30 Series Desiccant Air Dryer/Filter system features a moisture indicator to let you know when to change desiccant cartridge, and an easy access 6” flange for quick desiccant changes. It includes sturdy steel wall mounting brackets for easy installation. A special CAMAIR desiccant cartridge removes oil, water & moisture vapor from your compressed air, resulting in a dew point of -400F and relative humidity of less than 1/2”. The first stage separator removes bulk water, dirt and oil, which greatly extends desiccant life. The drain is all brass construction for long trouble free life.