Filter regulator lubricator unit, frl-500, is so designed that it serves the function of the filter, regulator and the lubricator in a compact space. The sintered filter with the water separator removes dirt, pipe scale, rust and condensate from the compressed air. The regulator is a diaphragm operated, relieving type regulator. It keeps the working pressure largely constant, irrespective of pressure fluctuations on the supply side. The lubricator is a mist type. The adjusting screw sets the required lubrication and the oil drops can be seen through the sight feed dome [drip cap]. The amount of oil atomised is proportional to the airflow. With this unit, oil can be filled under pressure. It contains double diverter vane to give cyclonic motion to the air for effective moisture separation. The self relieving diaphragm type regulator regulates the outgoing air pressure inspite of wide fluctuations in the incoming air pressure. The proportion maintaining lubricator supplies proportionate oil to the compressed air in a preciselymetered quantity. The pressure drop that occurs when the air flows through a venturi nozzle is used to convey oil from a reservoir to the drip cap. From here, the oil dripsthrough a syphon tube into an air passage. As the oil leaves the syphon tube, it is atomised by the flowing air. Oil can be filled without closing the air supply. The drip rate is regulated using an adjusting screw. For general use, the factory sets it at 6 drops per minute.
