Horizontal Scotch Marine Steam Boilers
Carbon steel construction (boiler plate and pipe). Low pressure 15 PSI through high pressure 150 PSI. Available from 6 HP through 50 HP in standard sizes; larger boilers and higher pressures available on request.
Every unit ships with basic controls including electronic level controls, ANSI-ASME Sect. I BPV stamp, and National Board registration.
Available Sizes & Pressures
Scotch Marine fire-tube design, complete with electronic level controls, ANSI-ASME Sect. I BPV and National Board registration. Larger boilers and higher pressures are available on request.
Standard HP Capacities
- Small: 6, 9.5, 10, 12, 15 HP
- Mid: 20, 25, 30 HP
- Large: 40, 48, 50 HP
- 6-15 HP available at 100 PSI and 150 PSI
- 45 HP available at 150 PSI
Pressure & Options
- Low pressure: 15 PSI
- Standard pressures: 80, 110, 135 PSI
- High pressure: 150 PSI (and higher on request)
- Add-on: blowdown-drain tank (carbon steel)
- Add-on: automatic-electric blowdown
Gas Fired Boiler Advantages
High Efficiency
Scotch type design maximizes heat transfer for efficient fuel utilization and lower operating costs.
Reliable & Durable
Built with high-quality materials and proven engineering for years of dependable service in industrial settings.
Compact Design
Fire-tube construction provides a compact footprint relative to output capacity, saving valuable floor space.
High Steam Output
Capable of producing large volumes of steam to meet the demands of heavy industrial applications.
Easy Maintenance
Designed for easy access to critical components, reducing downtime during maintenance and inspections.
Custom Options
Custom configurations available to meet your specific requirements and operating conditions.
Steam Industrial Boilers For:
- General steam use
- Food industry
- Industrial laundry
- Dry cleaners
- Health spa & steam rooms
- Sterilizing
Frequently Asked Questions
What is a Scotch type gas fired boiler?
+A Scotch type boiler is a fire-tube design where hot combustion gases pass through tubes surrounded by water. This configuration provides excellent heat transfer efficiency, compact construction, and high steam output relative to the boiler's footprint — making it one of the most widely used industrial boiler designs.
What fuel types are supported?
+Our Scotch type boilers are designed to operate on natural gas as the primary fuel source. Dual-fuel configurations and alternative fuel options may be available depending on your specific application requirements. Contact us to discuss your fuel supply needs.
What industries commonly use gas fired boilers?
+Gas fired boilers are used across manufacturing, food and beverage processing, textile and commercial laundry, chemical processing, agriculture, hospital and healthcare facilities, and commercial building heating. Any application requiring high-volume, reliable steam production benefits from gas fired boiler systems.
How efficient are Scotch type boilers?
+Scotch type fire-tube boilers are known for high thermal efficiency due to their large heat transfer surface area. The multi-pass design maximizes the extraction of heat from combustion gases before they exit the flue, resulting in efficient fuel utilization and lower operating costs.
What maintenance do gas fired boilers require?
+Regular maintenance includes water treatment monitoring, burner inspection and tuning, safety valve testing, flue gas analysis, and periodic inspection of tubes and internal surfaces. Our Scotch type design provides easy access to internal components through removable covers, simplifying routine maintenance procedures.
Can General Boiler customize gas fired boiler specifications?
+Yes. We offer custom-engineered gas fired boiler solutions designed to meet your specific capacity, pressure, and application requirements. Our engineering team works with you from initial specification through manufacturing and delivery, all under ASME Codes & Standards.