The compressed air coming out from an After Cooler, contains large quantities of water vapour condensed as a result of cooling of the compressed air. If this is not removed, much of it will be carried to the distribution system and cause expensive damage to all the equipment and processes, which use the air. Apart from water vapour, there is also an appreciable quantity of oil vapour that is formed due to heat and pressure carried along with the air stream is also removed by the separato