Bubble Cap Tray is the most seasoned kind of trays being used. These trays are called “fluid fixed” trays, in which the vapor passes behind through the short lines called risers covered by a cap with serrated edge or spaces. They are generally used when no leakage is allowed and also used for low liquid loads and have a very high turndown ratio. Available up to 6m with 50-100 mm caps.
At all vapour flow rates a foreordained fluid level will be maintained on trays. Offers benefit to work wide scope of fluid stream rates.