A new brochure from Bryan Steam LLC provides complete information and specifications on the F Series atmospheric gas-fired steam and water boilers. These boilers are offered in a range of sizes from 250,000 to 850,000 Btuh input. All feature Bryan's exclusive "Flexible Water Tube" design, assuring rapid internal circulation for maximum heat transfer and operating efficiency. Tubes are easily removed from one side and replaceable without welding or rolling. The F Series utilizes alloy steel atmospheric burners with quiet electric ignition and operation. The F Series water boilers are constructed as standard for 60 psi maximum working pressure at 230