Industrial FLX Watertube Boiler — Steam and Hot Water

CB Boiler Model FLX

CB Boiler Model FLX

Cleaver-Brooks FLXThe model FLX Flexible Watertube Boiler is designed to minimize thermal stress and provide quick response in a compact unit. There is also a field-erectable option. The compact footprint design offers 160 psig hot water applications or 15 psig and 150 psig steam applications with optional design to 250 psig.

  • 1.5 to 25.0 MMBTU/hr
  • Natural gas, #2 Light Oil, propane, digester
  • 15 to 250 psig on steam
  • 160 psig on hot water
  • Available to < 9 ppm NOx

Product Overview

The FLX has distinct design features that include non-welded tube attachment for ease of tube replacement. The package includes a ProFire® burner for a completely integrated and engineered solution from a single source. Removable sectioned side panel design permits full access to all tubes.


  • Lower Fuel Cost
  • Lower Emissions


  • Process Steam
  • Industrial Process
  • Building Heat
  • Sterilization
  • Hospital and Healthcare