Cleaver-Brooks | Products & Solutions | Boilers | Industrial Watertube | D-Style Elevated Drum

D-Style Elevated Drum

Industrial Watertube Boilers

  • Steam, temperatures to 1,050°F
  • 200,000 to 1,000,000 lb/hr
  • Natural gas, #2 and #6 oil, combination
  • Design pressure up to 2,300 psig
  • Available to less than 7 ppm NOx, Ultra-Low CO

The Cleaver-Brooks D-Style elevated drum design maximizes shop assembly time while minimizing the cost of field labor often associated with boilers of such high capacity.

The D-style elevated drum is a 100% membrane water-cooled furnace, reducing costly, time-consuming, annual maintenance.

The front and rear walls are welded and refractory-free, as well as the burner throat, when integrated with our NATCOM burner.

D-style boilers can be customized to provide superheated steam. We offer both single- and dual-stage integral superheater systems with optional temperature control over turndown.


  • Minimal field assembly
  • Faster, more cost-effective delivery time versus field erect boilers
  • Reduced gas-side pressure drop and smaller forced-draft fans
  • Superheat option available
  • Dual burners for some applications
  • Can accommodate selective catalytic reduction (SCR) and CO catalyst


  • Lower Fuel Cost
  • Lower Emissions
  • Steam Solutions


  • Process Steam
  • Industrial Process
  • Building Heat
  • Hospital and Healthcare
  • Power and Utilities
  • Refineries and Petrochemical

Related Products & Accessories

Case Study

Designing Large Packaged Boilers

Designing large package boilers rated at over 400,000 lb/h steam production is a challenge because of shipping limitations within the U.S. and Canada. Field-erected boilers, on the other hand, are very expensive and take more time for commissioning. Minimizing field assembly time is crucial to cutting costs and shortening the construction schedule on such large projects.