Industrial FLX Watertube Boiler — Steam and Hot Water

R.F. MacDonald Co. services and sells boilers, pumps, composites and accessories for commercial and industrial applications.

CB Boiler Model FLX

CB Boiler Model FLX

CB Boiler Model 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.

• Steam or hot water
• 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