Moisture is the enemy of pneumatic systems, and SMC has a wide array of air dryers to keep moisture out of your systems. A wide range of sizes are available to meet flow ranges from 10~1000 liters per minute  (ANR) and dew points from -15 to -60 degrees C.

SMC's upstream air preparation filters separate and remove mist and particles in compressed air that is difficult to remove with standard air filters. Depending on the unit, removal of contaminants down to  0.01 micron is possible. Large capacity filters and centrifugal water separators are also available.

SMC offers both air-cooled and water-cooled type aftercoolers. They are able to cool high temperature compressed air down to 40 °C or less while efficiently removing moisture from the system.

SMC's line auto drain valves reliably discharges even viscous drainage without requiring a human operator. There are several variants including air operated, motor operated, and heavy duty float style.