Miura · EX Series Steam Boiler
Miura EX-250-07
The Miura EX-250-07 is a dual-fuel industrial steam boiler rated 250 BHP and 8625 lb/hr equivalent output at up to 170 PSIG, with 85% fuel-to-steam efficiency and a 8000 lb shipping weight in Miura's published EX table.
Key figures
- Max input
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- Max CSA output
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- AFUE
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- Min input
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Input is gas energy consumed; output is heat delivered. Never size from input alone.
Miura EX-250-07 in practice
Miura's EX standard-pressure table prints the EX-250-07 at 250 utilization horsepower, 170 PSIG maximum pressure, 8625 lb/hr equivalent output (calculated from and at 212°F feed water at 212°F steam) and 8.369 MMBTU/hr heat output at 85% efficiency.
The same row lists a 9900 lb operational weight, 110 gallons of operational water content, a 8000 lb shipping weight, dimensions of 68 1/2" wide × 135 1/8" long × 145 1/4" high, 68.7 gal/hr No. 2 oil consumption, 3-5 PSIG gas supply pressure and a 20" OD chimney.
The EX uses a floating header design on an upright drum-shaped pressure vessel and reaches full steam output in under five minutes from a cold start. Miura markets the line for facilities that need a secondary fuel source, with the BL Controller providing online monitoring of steam pressure, flue gas temperature, feedwater temperature, scale and overheat monitors, flame current, time to blowdown and water conductivity. No official Canadian-sales statement was found.
Best suited to
- Facilities that require a secondary fuel source (natural gas, propane or No. 2 oil)
- Industrial steam loads in the 8625 lb/hr class
- Compact installations that need quick cold-start steam
Applicability and support
- Model number
- EX-250-07
- Canadian availability
- unknown
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Not verified
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Specifications
Published specifications
Values as published by Miura. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Output | ||
| Equivalent output | 8,625 LB/HR | Equivalent output calculated from and at 212°F feed water at 212°F steam, per the table note. |
| Heat output | 8.369 MMBTU/HR | As printed in the EX standard-pressure rating table. |
| Efficiency | ||
| Efficiency (fuel to steam) | 85 % | Thermal efficiencies are based on high heating values of fuels at 68°F feed water, per the table note. |
| Venting and air | ||
| Chimney diameter (ID) | 20" OD | As printed in the EX standard-pressure rating table. |
| Physical and connections | ||
| Operational weight | 9,900 LBS | As printed in the EX standard-pressure rating table. |
| Operational water content | 110 gal | As printed in the EX standard-pressure rating table. |
| Shipping weight | 8,000 LBS | As printed in the EX standard-pressure rating table. |
| Width | 68 1/2" | As printed in the EX standard-pressure rating table. |
| Length | 135 1/8" | As printed in the EX standard-pressure rating table. |
| Height | 145 1/4" | As printed in the EX standard-pressure rating table. |
| Operating limits and other | ||
| Utilization horsepower | 250 BHP | As printed in the EX standard-pressure rating table. |
| Maximum pressure | 170 PSIG | As printed in the EX standard-pressure rating table; optional EXH-SGO series noted at 250 PSIG MAWP. |
| No. 2 oil consumption | 68.7 gal/hr | As printed in the EX standard-pressure rating table. |
| Gas supply pressure | 3-5 PSIG | As printed in the EX standard-pressure rating table. |
| Fuel type | Natural Gas, Propane, No. 2 Oil | UL and c-UL approved for natural gas or propane, per the table note. |
Alerts documented for this model
None documented yet.
Frequently asked questions
What are the EX-250-07 ratings?
Miura's EX table prints 250 BHP, 170 PSIG maximum pressure, 8625 lb/hr equivalent output and 85% efficiency.
What fuel does the EX-250-07 use?
Natural gas, propane or No. 2 fuel oil; the table notes UL and c-UL approval for natural gas or propane.
How quickly does the EX-250-07 make steam?
Miura states the EX Series goes from a cold start to full steam output in less than five minutes.
Questions about the Miura EX-250-07?
Describe what the boiler is doing and get a straight answer about the next step.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
- Miura America — EX Dual Fuel Steam Boilers (published rating tables) · accessed September 9, 2026
- Miura — EX Series Steam Boiler Brochure (PDF) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.