Fulton USA Fulton USA Fulton China Fulton China

Fulton UK

VSRT


BES UKAS Logo

In 1949, Fulton pioneered the vertical tubeless design, which quickly became the industry standard for industrial steam boilers. Since that time, no one has been able to improve upon Fulton's original design.

Now, 70 years on, Fulton has raised 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.

With multiple worldwide patents pending in three continents, the VSRT's spiral-rib heat exchanger is a world first. It attains industry-leading heat transfer rates thanks to its unique spiral design, which achieves low stack temperatures by passing the flue gases through a spiral-wound heat exchanger that is fully immersed in water.

This all-new spiral-rib design benefits from an extended heat transfer path and dual-direction heat flow, with the spiral annulus designed and optimised to create high heat transfer rates. This optimises heat transfer to create a longer-lasting boiler that we believe will beat the competition in every category of durability!

The ground-breaking spiral rib heat exchanger design not only allows Fulton to improve boiler efficiency but, with virtually zero thermal stress, a thick walled construction and featuring vertical tubeless design architecture, the VSRT is one of the most durable steam boilers available.

It features a fully water-backed pressure vessel, which is wrapped in high-density insulation to achieve minimal thermal losses and low outer surface temperatures. The tubeless design has also enabled Fulton to create a compact boiler with minimal footprint. No refractory also means significantly lower weight (compared to traditional vertical steam boilers) for ease of installation.

Ultra-low NOx emissions of less than 20ppm are achieved thanks to the VSRT's combustion technology, which features a modulating burner and furnace that have been purposely-designed as a single component and fully-matched with the VSRT in mind. This has helped Fulton to achieve up to 10:1 turndown capabilities and industry-leading performance of >82.5% gross thermal efficiency and 99.75% steam quality at 8 bar. When correctly sized for applications, the exceptionally high turndown will result in savings above and beyond those gained from the stated efficiencies.

With features including a tubeless design, no internal refractory and revolutionary cyclonic air filtration, the VSRT is extremely easy to maintain and operate. For applications where contaminated air can reduce boiler uptime - such as laundry and dry cleaning - the VSRT's cyclonic air filter effectively separates debris and damaging particles from the combustion air and, because it won't clog over time, eliminates the need for replacement filters. Maintenance is further improved compared to other vertical boilers thanks to the VSRT's industrial control platform and easy access to the pressure vessel.

VSRT boilers are PURE Optimised and built to last as a reliable source of clean steam, providing cost savings and operator peace of mind for years to come.

  • kW rating: 100 - 1250 kW
  • Output (BHP): 10 - 125 BHP
  • Output (kg/h): 160 - 1956 kg/h (F&A 100°C)
  • Operating Pressure: 10.34 barg
  • Industry Leading Efficiencies
  • Hydrogen-Ready (hydrogen-natural gas blends up to 23%)
  • Smallest Footprint in the Industry
  • Fully-Wetted Pressure Vessel
  • 10 Year Guarantee on Pressure Vessel

Want to read more about the VSRT in action? Click here for the latest case study. 

The VSRT also caught the attention of the judges at several award ceremonies. Click below to read more: