Dutta Control Pvt Ltd. Supplies Filter Regulator Lubricators -FRL. Dutta Control Pvt Ltd. Offers a range of valves, cylinders, FRLs, Connectors and hydro pneumatic pumps. The Filter Regulator Lubricators -FRL is specially designed to serve the function of the Filter. The regulator and the lubricator require 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. The Regulator keeps the working pressure largely constant, irrespective of pressure fluctuations on the supply side. The Lubricator is a mist type. The required lubrication is set by the adjusting screw feet dome [drip cap]. The amount of oil atomized is proportional to the air flow. With this unit oil can be filled under pressure.