It is straight-line exhaust box, provided with motorised conveyor belt, and M.S. Steam Piping. The top is covered aluminium cover and the whole unit is mounted on heavy M.S. Stand. Filled canned are let in from one side of the box, on the conveyor belt and steam is passed into the M.S. pipeline through a boiler. The filled cans after going through this process are collected at the other and where they are sealed using can sealing machine. This process enhances the life of the preserved food items.