THREE-PASS SCOTCH MARINE DESIGN
LOW PROFILE, WET BACK CONSTRUCTION
Available in 8 Models from 100 – 2000 BHP
Steam Pressures to 15-300 PSI
Hot Water Section I and Section IV
Wetback design eliminates refractory rear door & baffles between flue gas passes
- Natural Gas
- Oil
- Combination
- Steam
- Hot Water
Standard 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.
Standard Steam Trim
- Operating & high limit pressure control
- Modulating pressure control (when applicable)
- Water column with gauge glass, combination low water cut-off & pump control
- Probe Aux, L.W.C.O. Steam pressure gauge, syphon & test cock
- Water column drain valve
- Safety relief valve(s) per ASME Code
Standard Water Trim
- Operating & high limit temperature control
- Modulating temperature control (when applicable)
- Probe type low water cut-off control
- Combination pressure & temperature gauge
- Hot water return baffle for shock resistance
- Safety relief valve(s) per ASME Code
Boiler Design
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.
Steam Model Trim
Safety relief valve, operating pressure control, high limit pressure control with manual reset, steam pressure gauge with syphon, combination pump control and low water cut-off with gauge glass assembly and drain valve, auxiliary low water cut-off with manual reset.
Hot Water Model Trim
Safety relief valve, operating temperature control, high limit temperature control with manual reset, combination pressure & temperature gauge, low water cut-off control with manual reset. BURNER: Matched UL listed “forced draft” power burners with factory prepiped, wired and tested fuel configurations for natural gas, propane (LP) gas, No. 2 (diesel) oil, or combination of both gas/oil.