Our 4VT range is available in 12 models from 10 HP to 130 HP, 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.



4 pass technology making it more efficient with low exit flue temperature

All 4VT’s are factory steam tested here at our HQ in Essex and can offer a higher output of steam.

Efficiency and Servicing

The burner is mounted in the mid-section and not at high level meaning the burner parts are easily accessible.

The feedwater pump is mounted on the boiler skid and is piped and wired.

They have a fully wired boiler control panel to provide audible and visual signals for effective boiler operation.

The flame does not pass under the bottom of the boiler.

4VT’s are mounted on their own skid assembly.

There is an aluminium band around the top and bottom of the case to prevent rusting over a long term.

The hand holes are not situated within the refractory.

The blowdown is located at the front of the boiler.

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 this translates to an efficiency of between 92-94 %.

Superior quality steam

30% larger steam chamber meets variable steam loads efficiently, produces drier steam, reduces scale, and virtually eliminates boiler priming


Fast start up 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


Compact vertical design makes the 4VT easy to site and install

Money saving

No NDT test required

We also offer our very own Slim Jim 10HP which 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.



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call +44 (0)1255 224500


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