Kettle Re-boilers Heat Exchanger is made from quality grade components to ensure efficiency. The Re-boilers Heat Exchanger is simple in design and requires pumping of the column bottoms liquid into the kettle. The Re-boilers Heat Exchanger works by flowing steam through the tube bundle and exits and condensate. The Kettle Re-boilers Heat Exchanger has a retaining wall or overflow wall separating the tube bundle from the re-boiler section.