Bubble Cap Tray is a bell shaped cap which is fixed on the top of a cylindrical riser through which the vapour passes the tray deck. The cap column diverts the vapour flow below the level of liquid on the tray deck where it is jetted into the liquid either through slots at the bottom of the cap or else between the skirt of the cap and the tray deck. The bubble caps facilitate the continuous contact between the rising vapours and returning liquid. This range is widely used in various food, beverages, alcohol and chemical industry.