Model A3S4 Series -Steam Boilers

Designed to Meet the Needs of Boilermakers. Capacities: 10 – 250 BHP. Fuel Options: Gas, Oil, Combination Gas/Oil, Digester Gas. Inputs from 399,000 to 10,100,000 BTUH. Outputs from 330,000 to 8,369,000 BTUH. Models Up To 125 BHP Fit Through 36″ Doorway. Modified Three-Pass Scotch Marine “Scotch Box” Boiler. 15 PSI Steam / 30, 40, 80 or 150 PSI Water Design. 83 – 88% Efficiency. “U-Type” Flex Joint. Thermal Shock Resistance. Welded or Expanded/Flared Tube Attachment. Water Surrounded Cylindrical Furnace For Highest Heat Transfer. Water Cooled Reversing Chamber 4-Sided Wetback. Insulated Boiler with 18 Gauge Boiler Jacket.