Bosch steam boilers generate process heat with output ranges from 175 to 55,000 kilograms per hour and are universally applicable. The sizing and equipment level of the products are designed to individual customer specification with many different options and variants available. The result: maximum energy efficiency, excellent conservation of resources and outstanding availability. The intelligent control technology offered by Bosch ensures convenient, fully-automatic boiler operation. The flame tube, internal water-flushed rear flue gas reversing chamber, first smoke tube and second smoke tube are all arranged for optimum flow within the cylindrical pressure vessel. In interplay with one another, the radiant and convection heating surfaces promote rapid water circulation, thereby accelerating the passage of steam bubbles to the steam chamber.