Boilers

Boiler Information

Boiler, high-pressure, steam or varpor

A boiler in which steam or vapor is generated at a pressure exceeding 15 psig.

Boiler, water-heating

A boiler in which no steam is generated and from which hot water is circulated for heating purposes and then returned to the boiler.

Boiler, hot-water-supply

A boiler functioning as a hot water heater.

Boiler, low-pressure-steam or vapor

A boiler in which steam or vapor is generated at a pressure not exceeding 15 psig.

Boiler horsepower

The evaporation of 34 ½ lbs. of water per hour from a temperature of 212oF into dry saturated steam at the same temperature. Equivalent to 33,475 Btu.

Boiler water

A term construed to mean a representative sample of the circulating boiler water, after generated steam has been separated and before the incoming feed water or added chemical becomes mixed with it so that its composition is affected. (ASTM - D860)

Field Erected Boiler

The ASME Code allows for a boiler to be built, provided certain requirements are followed, on site as opposed to the boiler manufacturers facility. For many years, this meant a high pressure watertube boiler. New York City and many eastern cities have been Field Erecting Low Pressure Scotch Marine Firetube Boilers since the late 1960s. The F.W.Starrett Company, Inc. built the first field erected Firetube boiler in the State of Michigan and the first in the city of Detroit in 1995 and 1997. Since then, we have built over 65 of these units from 20 HP at the Detroit Zoo to 800HP at Wayne County Community College.