The U-tube tank heaters operate with either water or steam on the tube side. The U-tube tank heaters are available in sizes ranging from 4 to 12 inches in diameter and lengths up to 10 feet. According to the manufacturer, both the two- and four-pass designs can be installed in any new or existing hot water tanks. Heads on the units are made of cast iron, whereas the tubes and baffles are copper. The tube sheets and bolting are steel. The units can be used for applications such as heating, radiation, and service water.

Bryan Steam LLC, 783 North Chili Ave., Peru, IN 46970; 765-473-6651; 765-473-3074 (fax); bryanboilers@iquest.net; www.bryanboilers.com.

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