For commercial use, low- and high-pressure-steam CFH boilers are available in 10- to 60-hp models. The compact gas-fired boilers are 85-percent efficient and have sound emissions of less than 70 dBA, nitrogen-oxide (NOx) emissions of less than 30 ppm, and up to a 5-to-1 turndown ratio via linkageless fuel/air control.
— Cleaver-Brooks Inc.
A brochure from Babcock & Wilcox Power Generation Group highlights the benefits of bubbling fluidized-bed boilers and their applications for new and retrofit conversion projects. The brochure details the boilers' operational and environmental advantages, such as fuel flexibility, reliability, efficiency, and ease of operation. The brochure also lists a wide range of fuels that the boilers can burn, such as biomass, bark, wood wastes, and sludges.
— Babcock & Wilcox Power Generation Group Inc.
Atlas condensing boilers are available in seven models from 500,000 to 3 million Btu with no minimum inlet temperature. The boilers are fully modulating, with a 7.5-to-1 turndown ratio and 98-percent thermal efficiency. The units have sealed combustion chambers with NOx emissions of less than 10 ppm.
— Ajax Boiler Inc.
A leaflet from Grundfos details the company's line of Magna wet-rotor circulator pumps. The leaflet includes information about the pumps' performance, flange connections, hydraulics, permanent-magnet rotors, and in-slot winded stators. Tables show the estimated power-consumption savings possible with fixed-speed pumps. Full-color photos, technical data, and a list of applications are included.
For use with commercial and industrial hot-water and steam boilers, tanks, and vessels, the 150E is a low-water-cutoff pump controller and alarm actuator. Featuring adjustable 60-sec burner-off time delays, the controller provides continuous primary or secondary protection against low-water conditions and rapid burner cycling.
— McDonnell & Miller
Boiler feed pumps
Available in simplex or duplex construction, 4300 Series stainless-steel condensate and boiler feed pumps employ heavy-gauge 3/16-in. stainless-steel receivers and feature bronze fitted centrifugal pumps, automatic venting, heavy-duty float switches, and Sterl-Seal ceramic pump seals. The pumps' 3,450-rpm motors ensure efficiency.
— Sterling Steam Control
A modulating/condensing unit, the Knight XL commercial boiler features 94.6-percent thermal efficiency, low NOx emissions, and a fully modulating burner with a 5-to-1 turndown ratio. Equipped for direct-vent installation with air-intake and exhaust runs up to 100 ft, the boiler offers flexibility for light-duty and high-demand commercial applications.
— Lochinvar Corp.
A floor-standing cast-aluminum sectional condensing boiler, the Gas 310 ECO operates with up to 80°F temperature differential and has NOx emissions of 15 to 30 ppm. The five available models have outputs of 1,000, 1,250, 1,500, 1,750, and 2,000 mbh.
— De Dietrich Boilers