Hot-water pumps

Series RWA high-temperature air-cooled pumps are designed for use with hot water, ethylene glycol, and propylene glycol. Eight pump sizes include capacities of up to 1,100 gpm, heads of up to 425 ft, pressures of up to 450 psig, and maximum temperatures of 400°F. The pumps include a shaft-mounted fan to provide airflow over the cooling fins.
Dean Pump Division
Circle 50

Flow meters

Series TFP-GI gas-turbine flow meters are suitable for industrial, commercial, and laboratory flow applications. The flow meters have a 0-to-5-vdc analog output and a local three-and-a-half-digit liquid-crystal-display flow-rate indicator.
Dwyer Instruments Inc.
Circle 51

Cast-aluminum boilers

Able to achieve 99.9-percent thermal efficiency, nine models of Gas 230 Eco and Gas 310 Eco fully condensing cast-aluminum boilers have capacities ranging from 300 to 2,000 mbh. The boilers have third-party-approved nitrogen-oxide levels of less than 20 ppm and operating-pressure ratings of 100 psi.
De Dietrich Boilers
Circle 52

Hot-water boilers

Vantage condensing hot-water boilers operate at 4 million Btuh. Design features include dual-fuel capabilities with No. 2 oil, high-mass design, direct-vent/sealed combustion, and stainless-steel heat exchangers.
The Fulton Co.
Circle 53

Condensing boilers

Sync condensing boilers combine stainless-steel heat-exchanger technology with modulating/condensing combustion to deliver thermal efficiency as high as 98 percent. With models that produce 1.0, 1.3, and 1.5 million-Btuh inputs, low-nitrogen-oxide operation, and turndown ratios of 10-to-1, the boilers can serve a range of commercial applications.
Lochinvar Corp.
Circle 54

Condensing boilers

Available in sizes up to 2,000 MBtu, XTherm vertical modulating condensing boilers combine high-recovery copper-fin technology with control and combustion advancements. The boilers have a burner turndown that produces up to 99-percent efficiency at low fire.
Raypak
Circle 55

Boiler staging controls

For multiple boiler installations, 274 and 275 boiler staging controls can operate up to four boilers using proportional-integral-derivative staging to maximize system efficiency. The 274 controls operate on/off boilers, while the 275 controls operate modulating boilers. Energy-saving features include outdoor reset, warm-weather shutdown, and pump purging.
Tekmar
Circle 56