F22B9/12 - CPC Classification

Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed substantially horizontally, e.g. at the side of the combustion chamber the fire tubes being in substantially horizontal arrangement

• F22B9/14 » Arrangement of header boxes providing for return diversion of flue gas flow 1

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