50 Years Of Trust | Engineering The Next Energy ERA
50 Years Of Trust | Engineering The Next Energy ERA
8,000 – 20,000 kg/hr | Up to 95% Thermal Efficiency
High-efficiency, fully automated Oil & Gas steam generation for precision process industries.
Certified Design
The ISOTEX Evolution represents a new class of industrial steam boiler — bringing large-system performance, precision, and efficiency within reach of any process operation. Available in oil, gas, or seamless dual-fuel configuration, the Evolution combines premium European burner technology with ISOTEX’s 50-year manufacturing expertise to deliver the cleanest, most efficient steam generation available.
With up to 95% thermal efficiency, automatic combustion management, smart remote monitoring, and dual-fuel flexibility, the Evolution delivers outstanding fuel savings, operational reliability, and environmental performance for any process-critical steam application.
With up to 95% thermal efficiency, automatic combustion management, smart remote monitoring, and dual-fuel flexibility, the Evolution delivers outstanding fuel savings, operational reliability, and environmental performance for any process-critical steam application.
ISOTEX Evolution oil & gas fired steam boilers are available across five standard capacities covering 8,000 to 20,000 kg/hr, engineered for diverse industrial process steam requirements with consistent, stable output. Custom engineering is available for specific process requirements.
| Parameter | Value / Range | Unit / Notes |
|---|---|---|
|
Steam Output Capacity |
8000 – 20,000 |
kg/hr. |
|
Design Pressure Range |
Up to 26 |
kg/cm²(g) |
|
Thermal Efficiency |
Up to 83% |
On NCV Basis |
|
Dryness Fraction |
≥ 98% |
Guaranteed |
|
Boiler Series |
Evolution |
Factory-assembled modular design |
|
Fuel Type |
Oil / Gas / Dual Fuel |
LDO, FO, HSD, LSHS, NG, LPG, CNG, LNG, Bio-Gas |
|
Burner Technology |
Riello Italy Monobloc |
Electronic Regulation, Digital BMS |
|
Turn-Down Ratio |
1:5 |
20% – 100% Load Modulation |
* Efficiency 95% ±2% measured to BS 845 Part 1, Indirect Method. Custom capacities and higher-pressure designs (up to 26 kg/cm²) available on request — contact our engineering team.
The ISOTEX Unitherm Thermosyphon Boiler is available in multiple firing configurations, offering unmatched fuel flexibility across solid, liquid, and gaseous fuels to match every industry’s availability, cost, and emission requirements.
LDO
10,200 kCal/kg
Low-viscosity; direct atomisation; no pre-heating required. Primary liquid fuel option for clean, reliable combustion.
FO
9,700 kCal/kg
Heavy fuel oil for high-capacity, cost-sensitive operations. Requires pre-heating system and compatible atomising burner.
HSD
10,800 kCal/kg
LSHS
9,500 kCal/kg
Refinery-grade heavy fuel with reduced sulphur content. Suitable for large-capacity plants requiring emission compliance at lower fuel cost.
The gas boiler incorporates the world-renowned Riello (Italy) electronic regulation monobloc burner — delivering precision gas combustion with industry-leading turn-down and modulation capability:
Pipeline / PNG
8,500 kCal/Nm³
CNG
8,500 kCal/Nm³
LNG
12,000 kCal/kg
–
11,900 kCal/kg
(Optional)
5,000 kCal/Nm³
ISOTEX Evolution dual-fuel configurations provide automatic switchover between liquid and gaseous fuels with no manual intervention or burner head change required — ensuring uninterrupted steam supply during gas curtailment, supply disruptions, or planned fuel switching for cost optimisation.
Natural Gas (PNG/CNG)
Natural Gas (PNG/CNG)
The ISOTEX Evolution incorporates the internationally renowned Riello (Italy) advanced electronic regulation monobloc burner — the world’s leading burner manufacturer, field-proven in 100+ countries — delivering exceptional combustion precision, reliability, and fuel flexibility across all oil and gas grades.
Built to Perform. Proven in the Field. Explore real ISOTEX Evolution installations showcasing proven capability across process industries in India and globally.
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Our engineering team responds within 24 hours. Share your capacity requirements and fuel preference. We’ll engineer the right solution.
