Fulton
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Introduced in 2018, the VSRT (Vertical Spiral Rib Tubeless) is described by Fulton as the first fully wetted, refractory-free vertical tubeless steam boiler. Its spiral rib heat exchanger gives a long heat-transfer path in a compact space.
The fully water-backed pressure vessel is wrapped in high-density insulation for low jacket temperatures and minimal thermal loss. Fulton lists industry-leading efficiency, high steam quality and a small footprint as the headline features.
| Model | VSRT-40 |
|---|---|
| Size | 40 BHP |
| Type | Steam boiler |
| Fuel input (MBH) | 1,600 |
| Steam output, F&A 212°F (lb/hr) | 1,380 |
| Output (MBH) | 1,340 |
| Turndown ratio | 6:1 |
| Height w/o trim (in) | 97 |
| Height w/ trim (in) | 107 |
| Width w/o trim (in) | 49 |
| Width w/ trim (in) | 68 |
| Depth (in) | 83 |
| Burner pull (in) | 130 |
| Steam outlet, 150 psi trim (in) | 4 |
| Air inlet (in) | 6 |
| Flue outlet (in) | 10 |
| Shipping weight (lb) | 6,000 |
| Operating weight (lb) | 7,864 |
| Flooded weight (lb) | 8,600 |
| Fuel options | Natural gas, dual fuel, propane |
| Approvals shown by Fulton | ASME, ETL, SCAQMD |
| Fulton lead time, as listed | Varies, consult factory |
Warranty: Warranty is administered directly by Fulton under its standard commercial terms.
