4WG Cleaver-Brooks Hydronic Firetube Boiler — Steam and Hot Water

CB Boiler Model 4WG

CB Boiler Model 4WG

Cleaver-Brooks 4WG BoilerThe Cleaver-Brooks Model 4WG firetube boiler is a 4-pass wetback-integrated package designed for hot water or low- and high-pressure steam applications.

  • Steam and hot water
  • 100 to 800 HP
  • Natural gas, #2 and #6 oil
  • Combination oil/gas
  • 15 to 250+psig on steam
  • 30 to 125psig on hot water
  • Available to <9 ppm NOx


Product Overview

Integrated package includes pressure vessel, ProFire® packaged burner, and controls for optimal fuel-to-steam/water efficiency, space savings, and low emissions.

Upgrade or retrofit your system with Cleaver-Brooks controls, economizers, water treatment systems, and all the other system components to build a state-of-the-art boiler room of virtually any size and capacity.


  • Wetback boiler design
  • 5 sq ft / boiler HP
  • ProFire packaged burner
  • Options for low-NOx control
  • Options for Hawk control system


  • Lower Fuel Cost
  • Lower Emissions


  • Process Steam
  • Industrial Process
  • Building Heat
  • Sterilization
  • Humidification
  • Hospital and Healthcare
  • Power and Utilities
  • Refineries and Petrochemical
  • Laundry and Dry Cleaning