MODERN STEAM PRACTICE . to the action of the flame ; the bottom joints are embedded in the brickwork , and each of the tubes exposes an area of 16 feet , … Fig . 15 . — Water - tube Boiler , a , Furnace . b , Tubes . c , Flue . d d , Division plates . e , Damper . f , Stop valve . G , Chimney . J ‘ Fig . 16 . — Self - contained Water - so manufactured that no destructive ex - tube Boiler , pansion may be allowed to take place , and all the joints…
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