Steam Boilers

Steam Boilers: Horizontal Three Pass Firetube • Vertical Firetube

Aldrich Company manufactures three pass and vertical firetube steam boilers for low pressure applications. The Classic Series modified Scotch Marine “Scotch Box” boiler is designed to fit through a standard doorway.

STEAM BOILERS – CLASSIC SERIES THREE PASS FIRETUBE
A3S •
A3S4 • A3S5 • AHFRC • A3SL

  • 15 PSI Steam / 30, 40 & 80 PSI Design Water Options
  • 83 – 88% Efficiency
  • Inventor of the “Scotch Box” Design
  • “U-Type” Flex Joint
  • All Steel Construction
  • Thermal Shock Proof Resistance
  • Water Surrounded Cylindrical Furnace for Highest Heat Transfer
  • Water Cooled Reversing Chamber 4-Sided Wetback
  • Capacities: 12 – 250 BHP
  • Models up to 125 BHP Fit Through 36” Doorway
  • Fuels: Gas • Oil • Combination Gas/Oil • Digester Gas
  • Structural Channel Base
  • Optional Field Erect Boilers
  • Ideal for Multiple Boiler Installations
  • Package with Aldrich Boiler Management Panel for Highest System Efficiency
  • Ease of Maintenance, Access to Fire Side

STEAM BOILERS – VERTICAL FIRETUBE
D
DG

  • 15 PSI Steam / 30 PSI Water
  • 80 – 83% Efficiency
  • All Steel Construction
  • Thermal Shock Proof Design
  • Water Surrounded Cylindrical Furnace for Highest Heat Transfer
  • Capacities: 4 – 42 BHP
  • Optional Tankless Coil for Indirect Loads
  • Fuels: Gas • Oil • Combination Gas/Oil
  • Ease of Maintenance, Access to Fire Side
CLASSIC SERIES 83-88% EFFICIENCY 12 – 250 BHP

Classic Series
83-88% Efficiency
12-250 BHP

D SERIES 80-83% EFFICIENCY 4 – 40 BHP

D Series
80-83% Efficiency
4-40 BHP