ENERGYPACK Boilers (Except Small size in Oil fired ) are three pass wet pack, horizontal, smoke tube type fusion welded. Boiler are made to IBR / DIN / BS / ASME code.Components are Engineered for maximum safety, Highest Efficiency, dependability and quite operation. Wet back Models eliminate rear end refractory and its inherent maintenance cost,reduces stress of rear tube sheet and ligament cracking, radiant heat is eliminated, lengthening tube life and reducing heat loss from rear turn around.