The SG series consist of small and medium capacity forced-circulation generators.
The heated surface is made by a concentric helically wound single-pipe, allowing three smoke turns with entirely screened combustion chamber, and the absorption of the radiation heat. The reduced mass of water and the countercurrent exchange of water and combustion products give an high thermal exchange with remarkable increase of the generator performance.
The generators are equipped with all appliances for adjustment and safety as far as pressure and temperature of water, steam and fuel circuits are concerned. The generators are constructed in accordance with I.S.P.E.S.L. regulations.