Hurst-series250

Fire Tube Scotch Marine Boiler

Hurst / Series 250 – Steam Boiler

20 - 1000 BHP

2 Pass - Semi Wet Back Packaged Fire Tube Boiler

Performance Summary
Application Steam Boiler
Capacity - Lbs/Hr 690 Lbs/hr - 34,500 Lbs/hr
BTUH Input Range N/A
Design Fluid N/A
Design Pressure/MAWP 15 - 450 PSIG
Fuel Option Natural Gas, Diesel Fuel, Duel Fuel, Altenative Fuels
Product Description + -
Two pass design eliminates refractory baffles between flue gas passes. Efficiencies are equal to 3 and 4 pass boilers in many cases.The all new Hurst 250 Series Boiler has been designed and developed specifically for the International Market, and engineered to fit easily in a 40 ft shipping container. The advanced computer modeled design enables Hurst to provide a full wet-back scotch marine boiler with a larger furnace, and a lesser amount of technically enhanced tubes.
The improved two-pass design that eliminates refractory baffles between flue gas passes, offers performance equal to 3 and 4 pass boilers in many cases. This improves the efficiency of the boiler by up to 2%, as well as providing lower NOx levels. Additionally, shipping costs can be reduced as much as 2-10x previous cost, saving thousands of dollars.

Available in Steam or Hot Water Versions/15 - 800 HP, Pressures to 300 psig
  • Proven design,
  • Easy access to internals of boiler
  • Confined space entry not required for most maintenance activities
  • Simple construction
  • Increased reliability due to semi wet back design
  • Boiler is of the two-pass, scotch type, built and stamped in accordance with the requirements of the ASME Code, and listed by the National Board of Boilers and Pressure Vessel Inspectors.
  • Large combustion chamber with low heat release for complete combustion.
    Smoke box is front-mounted with slip-on stack connector.
  • Access to fireside is accomplished with davited rear door and with split front doors. Flame observation ports are on front and rear.
  • Openings for cleanout inspection of waterside are provided with 3″ x 4″ hand holes, and with 12″ x 16″ manholes (80 HP up).
  • Insulated with 2″ high-density mineral wool, lagged with 22 gauge grip jacketing, baked on epoxy enamel to resist chipping and fading.
  • Fire tubes are rolled and beaded on power boilers, expanded and flared on low pressure boilers (2″ dia. through 30 HP, 2 1/2″ dia. 40 HP and up).
  • Supports include lifting lugs securely welded to the top of shell; structural steel support legs on skids support the boiler so that special foundations are not required.
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