Steam Boilers
VSRT Vertical Spiral Rib Tubeless Steam Boiler (0.5t/h to 4t/h)

VSRT Vertical Spiral Rib Tubeless Steam Boiler

Now Fulton is raising the bar with the VSRT (Vertical Spiral Rib Tubeless) boiler, the world’s first fully wetted, refractory-free vertical tubeless boiler and the new standard for industrial steam boiler design.

A Revolution in Steam Boiler Design

Fulton’s patent pending spiral rib heat exchanger achieves industry leading heat transfer rates. The unique spiral design provides a long heat transfer path which is optimized to achieve maximum heat transfer in a compact space.

The VSRT features a fully water backed pressure vessel wrapped with high-density insulation, resulting in minimal thermal losses and low jacket temperatures.

Ultra-compact vertical design – industry’s smallest footprint.




Refractory-free design

Up to 6:1 turndown; fully modulated burner


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  • Fuel Options: Natural Gas, Dual Fuel, Propane
  • Industry Leading Efficiencies - Up to 90.8%-99% efficiency
  • Highest Steam Quality Available - ≥99.75% steam quality at 15 PSI
  • Smallest Footprint in the Industry
  • Fully-Wetted Pressure Vessel


  • Models: VSRT-9.5 - VSRT-250
  • Steam Output, F&A 212F (LB/HR): 328 - 8625
  • Output (MBH): 318 - 8370
  • Turndown Ratio: 8:1 - 10:1

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Quality and Performance

Tomlinson Energy Service NSW, VIC and SA have a dedicated management system with a focus on Quality, Safety and Environmental aspects of all our operations.

Accredited to ISO 45001:2018, ISO 14001:2015 and ISO 9001:2015.

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