AirTAC Pneumatics Introduce FRL Combination Unit. 1.Oil dripping adopts gap seal structure, which makes the adjustment of oil supply more reliable. 2.Oil feed ring can only make one full turn. The quantity of oil supply, basically taking on linear distribution. The quantity of oil supply can be generally calculated according to the position of graduation ring. 3.Filling of oil while the lubricator is under pressure is made possible. 4.Special drip nozzle structure will produce negative pressure in oil dripping outlet and the mist flow is minimal. 5.Quick and reliable mounting clamps makes it convenient to install and use. 6.The performance of pressure adjustment is reliable with high precision. 7.The efficiency of eliminating moisture and solid grain is high. 8.Three drain types are available: manual drain, semiauto drain and automatic drain.