The Johnston Boiler 509 Series is renowned for its innovative 4-pass water-backed design, which combines high efficiency with low maintenance. This series maximizes effective heat transfer using five square feet of heating surface per boiler horsepower (BHP), eliminating tube sheet stresses and costly repairs common with dry-backed designs. Available in various configurations for both steam and hot water applications, the 509 Series offers robust construction, high steam and water storage, and the ability to handle wide load demands, making it a reliable and cost-effective choice for many boiler users.
Johnston Boiler
Custom Built Commercial & Industrial Boiler Manufacturer Since 1864
Spartan Controls is proud to announce our exclusive partnership with Johnston Boiler. In the marketplace, Johnston is recognized for its robust, reliable, and high-quality boilers. These boilers are crafted using materials that exceed ASME's minimum thickness requirements, ensuring maximum durability and longevity.
Johnston's conservative design philosophy maximizes the size of each boiler, providing customers with additional steam storage capacity and efficiency. With over 150 years in the boiler manufacturing business, Johnston's products are tried and true. Rather than chasing "new and improved" models, we focus on continuously enhancing our products from good to better to best.
Johnston's conservative design philosophy maximizes the size of each boiler, providing customers with additional steam storage capacity and efficiency. With over 150 years in the boiler manufacturing business, Johnston's products are tried and true. Rather than chasing "new and improved" models, we focus on continuously enhancing our products from good to better to best.
