Series 4VT Steam Boilers

10 – 130HP

Setting New Standards in Steam

Why it’s class-leading:

  • Energy-saving four-pass technology
  • 30% larger steam chamber
  • Integral heat recovery
  • 10-15 min start up time
  • Compact, tubeless design
  • Skid mounted and ready to fire
  • Gas, oil or LPG fired
  • Made in Britain by CFB Boilers
  • Range includes the renowned Slim Jim Boiler


For further sales and technical advice, please contact us.

About the 4VT Steam Boiler

Available in 12 models from 10 to 130HP, the 4VT range delivers precise, controlled temperatures to a wide variety of applications and equipment, making it an ideal choice for many steam requirements. 
Hand crafted at our manufacturing facility in Britain and featuring a range of class-leading innovations such as energy-saving four-pass technology and a 30% larger steam chamber, the 4VT Steam Boiler is arguably the most energy efficient, high performance, reliable, and low maintenance steam boiler on the market.

The Slim Jim 10HP Boiler

Our very own Slim Jim 10HP has been designed & patented exclusively here at CFB Boilers. Alongside the advantages of the 4VT range , the Slim Jim has been specifically designed to fit through a standard doorway and requires less storage space.


For your safety and that of our staff, we follow the full Covid-19 guidelines set by the government.

Why you need the 4VT

  • Energy efficient
    The 4VT steam boiler is the only boiler in its class to offer four-pass technology for optimum heat transfer, low exit flue temperatures, and minimal running costs
  • Superior quality steam
    30% larger steam chamber meets variable steam loads efficiently, produces drier steam, reduces scale, and virtually eliminates boiler priming
  • Time-saving
    Fast startup time of 10-15 minutes saves time and energy, and maximises production hours, while Integral heat recovery function minimises cycle times and increases energy efficiency
  • Plug and play solution
    Skid mounted with optional feed water systems, the 4VT is simple to connect and install
  • User-friendly, automatic operation
    Controls are fitted at the front of the boiler. Low water level controls with alarms are fitted as standard. Optional microprocessor control
  • Reliable, low maintenance design
    Durable materials and tubeless construction eliminate blustering, metal stress and refractory problems, and reduces the need for descaling
  • Space-saving
    Compact vertical design makes the 4VT easy to site and install
  • Simple to service
    Accessible burner for easy adjustment and servicing, flue way positioned for straightforward cleaning, and central air inlet limits dust or moisture intake
  • Meticulously manufactured
    Designed and built by CFB Boilers at our manufacturing facility in the UK using over 124 years of steam expertise