50 Years Of Trust | Engineering The Next Energy ERA

Get a Quote
✦ IBR Approved · Factory Assembled

Oil Fired Packaged Steam Boiler

High-Efficiency, Fully Automated Oil & Gas Steam Generation For Precision Process Industries.

The ISOTEX Evolution represents a new class of oil fired steam boilers — bringing large-system performance and efficiency within reach of smaller industrial operations. Factory-assembled, pre-commissioned, and ready for plug-and-play installation.

Thermal Efficiency
0 %
Max Capacity
0 TPH
Years Excellence
0
Request a Quote
Technical Data

Technical Specifications

Isotex Evolution oil fired steam boilers are available across standard capacities from 1,000 to 6,000 kg/hr, with custom engineering available for specific process requirements.

ParameterValue / RangeUnit / Notes
Steam Output Capacity1,000 — 6,000kg/hr
Design Pressure Range10.54 / 17.5kg/cm²(g)
Thermal EfficiencyUp to 95%BS 845 Part 1, Indirect Method
Thermal Efficiency (NCV)Up to 83%On NCV Basis
Dryness Fraction≥ 98%Guaranteed
Boiler SeriesEvolutionFactory-assembled modular design
Burner MakeRiello ItalyAdvanced electronic monobloc
Fuel ChangeoverAutomaticLDO / FO / Natural Gas
Burner Turn-down Ratio1:5Modulating, no on/off cycling
AssemblyFactory-assembled

Pre-commissioned, plug-and-play

* Efficiency 95% ±2% measured to BS 845 Part 1, Indirect Method. Custom capacities and higher-pressure designs available on request — contact our engineering team.
95%

Thermal Efficiency

Industry-leading efficiency achieved through special X-ID heat transfer tubes and integral economiser system — reducing fuel consumption and operating costs from day one.
1,000 — 6,000 kg/hr
Capacity Range
Five standard capacities covering small to large process steam requirements. Custom engineering available for specific process demands beyond standard range.
≥ 98%
Dryness Fraction — Guaranteed
Guaranteed dryness fraction ensures consistent, high-quality dry steam — critical for pharmaceutical, food processing, and precision chemical applications.
Fuel Flexibility

Oil Fuel Options & Flexibility

ISOTEX Evolution boilers are engineered with a premium European monobloc burner system offering full dual-fuel capability — switching seamlessly between gaseous and liquid fuels to ensure maximum operational continuity.

LDO

Light Diesel Oil

10,200 kCal/kg — low-viscosity, direct atomisation, no pre-heating required. Primary liquid fuel for Evolution Series boilers.
FO

Furnace Oil

Heavy fuel oil for high-capacity, cost-sensitive operations; requires pre-heating system and compatible atomising burner head configuration
HSD

High Speed Diesel

Heavy fuel oil for high-capacity, cost-sensitive operations; requires pre-heating system and compatible atomising burner head configuration
LSHS

Low Sulphur Heavy Stock

Refinery-grade heavy fuel with reduced sulphur; suitable for large-capacity plants requiring emission compliance at lower fuel cost
LDO/Natural Gas

Dual Fuel

Automatic changeover between LDO and natural gas; uninterrupted thermic fluid heating during gas curtailment — no manual intervention required

Technology Advantages

Key Features & Engineering Advantages

The Evolution introduces large-boiler technology — previously reserved for industrial-scale systems — into a compact, factory-assembled package delivering class-leading efficiency for process steam applications.

01

Special Design Integral Economiser

  • Up to 6% increase in thermal efficiency compared to boilers without economiser
  • Recovers waste heat from flue gases to pre-heat boiler feed water, dramatically reducing fuel consumption
  • Factory assembled and insulated — arrives as a complete unit, no site-erected economiser required
  • Up to 40% reduction in overall boiler footprint compared to separate economiser installations
  • Smart product design: integrated in the boiler shell for minimum pressure drop and maximum heat recovery
Efficiency gain vs. non-economiser boilers
+ 0 %

02

Special X-ID Heat Transfer Tubes

  • +85% more heat transfer compared to standard plain tubes — dramatically improving overall boiler efficiency
  • +50% more resistance to sooting than plain tubes — maintains efficiency and reduces cleaning frequency
  • CFD (Computational Fluid Dynamics) based internal ribbed design creates turbulence while limiting pressure drop
  • Reduced maintenance cost: superior soot resistance means fewer tube cleaning cycles and lower annual bills
  • Extended service life: ribbed design distributes thermal stress more evenly than plain tubes
More heat transfer vs. standard plain tubes
+ 0 %
Return On Investment

Cost Analysis & ROI Breakdown

ROI Analysis: ISOTEX Evolution (4 TPH) vs. Standard Oil-Fired Boiler. Real numbers, real savings — calculated on 7,000 annual operating hours.

Operating ParameterValue
Steam capacity4,000 kg/hr
Annual operating hours7,000 hrs
Fuel typeNatural Gas / LDO
Annual fuel cost (Evolution 95%)₹58.7 Lakh
Equivalent standard 85% efficiency boiler₹65.2 Lakh
Annual fuel cost saving (95% vs 85%)₹6.5 Lakh / year
Economiser additional savingUp to ₹3.9 Lakh / year
Total annual savings₹10.4+ Lakh / year
Typical payback period2.5 — 3 Years

₹10.4L+

Total Annual Savings

Combined fuel efficiency savings and economiser benefit per 4 TPH plant operating 7,000 hours per year on natural gas / LDO.

2.5 — 3 Yrs

Typical Investment Payback

The efficiency upgrade pays for itself within 2.5 to 3 years — after which the savings go directly to your bottom line for the life of the plant.

+10%

Efficiency Over Standard Boilers

At 95% vs. 85% thermal efficiency, every unit of fuel goes further — delivering measurable savings from the very first day of operation.
Field Performance

Isotex Oil Fired Boilers In Operation

Built to perform. Proven in the field. Real Isotex Oil Fired Boiler installations showcasing proven capability across industries.

Oil Fired Steam Boiler for Plywood Industry in Gujarat

Capacity

1,000 kg/hr

Fuel

LDO

Oil Fired Steam Boiler for Chemical Industry in Gujarat

Capacity

1,000 kg/hr

Fuel

LDO

Oil Fired Steam Boiler for Pharma Industry in Gujarat

Capacity

2,000 kg/hr

Fuel

FO

High-Capacity Oil Fired Steam Boiler for Industry in Uttar Pradesh

Capacity

4,000 kg/hr

Fuel

LDO

View Cast Studies
Field Performance

See The Evolution In Action

Isotex Evolution Product Animation

Resources

Technical Downloads

📋
Ecobloc CS - Sales Catalouge
Full technical specifications, GA drawings and fuel data — everything needed for engineering evaluation.
Download PDF
🌐
ISOTEX Global Company Profile
Global installation reference list and client testimonials across 75+ countries and 13 industry sectors.
Download PDF
🏆
Incomparable References
Global installation reference list and client testimonials across 75+ countries and 13 industry sectors.
Download PDF
🔍
Free Energy Audit Request
Request a free energy audit of your existing boiler — identify efficiency gaps and calculate upgrade savings.
Request Audit
Contact us

Get in Touch

Our engineering team responds within 24 hours. Share your capacity requirements and fuel preference. We’ll engineer the right solution.