Draught tube

(Water Wheels) an air-tight pipe extending downward into the tailrace from a turbine wheel located above it, to make the whole fall available; - called also draught box.

See also: Draught

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The technology works in four steps: Insert a DraughtKeg into BeerTender, connect the included disposable draught tube, close the lid and serve.
Kawabata, "Liquid Circulation in Bubble Column with Draught Tube," J.
At an inquest held in Nuneaton yesterday, Warwickshire coroner Michael Coker was told that a debris basket had to be lowered down the side of the structure to reach 45-year-old James Johnson, who was lying unconscious at the bottom of a draught tube.
An inquest in Nuneaton yesterday was told that a debris basket had to be lowered down to reach 45-year-old James Johnson, who was lying unconscious at the bottom of a draught tube.