Downcomers
In drum-type boilers, the large pipes that recirculate water from the steam drum back to the waterwalls. In separators, vertical piping that allows liquids to flow from the top tube to the bottom tube of a two-tube horizontal separator.
In drum-type boilers, the large pipes that recirculate water from the steam drum back to the waterwalls. In separators, vertical piping that allows liquids to flow from the top tube to the bottom tube of a two-tube horizontal separator.
