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3 Pass Wet Back Low Profile Fire Tube Boiler

Three-Pass “Scotch Marine” Firetube design with stress relieving “Wetback” construction.

Pressure designs for steam are 15-300 psi. 100-600 hp. 250 psi. max. for 700-1500 hp. and 200 psi. max. for 1800-2000 hp.

Hot Water pressures models are from 30-160 psi. High pressure, high temperature Section I hot water boilers available.

Factory assembled with trim, tested, ASME code, UL, and CSD-1 standards.

Features

Boiler is of the three-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 rear-mounted with slip-on stack connector.
Access to fireside is accomplished with hinged and davited front and rear doors. Flame observation ports are located on front and rear.
Openings for vessel cleanout and inspection of waterside are provided with 3″ x 4″ hand holes, and 12″ x 16″ manway access.
Insulated with 2″ high density mineral wool, lagged with 22 gauge grip jacketing, baked on finish to resist chipping and fading.
Firetubes are rolled and beaded on power boilers, expanded and flared on low pressure boilers.
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.
Low profile design.
3 pass proven design provides high efficiency.
Eliminate rear refractory door.
- Large combustion chamber provide low heat release and lower NOx emissions.

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Product Details