The OU series air treatment combination consists of air filter, air regulator and air lubrication. Compact design, round pressure gauges and square pressure gauges as options. The OU series air preparation combinations have three sub-series depending on the size of the housing: MAX, MIDI and MINI. The body material also has two types, aluminum and Kirsite (zinc alloy), while the Kirsite material has better performance. The port size ranges from 1/8" to 1", and the working pressure can be up to 16 bar. High flow rate, efficient water removal from compressed air.