Hartford Loop and equalizer

Heating · Steam Controls · printed page 195 (PDF page 196)

Book index entries

Equalizer – and Hartford Loop for Steam Heat Hartford Loop – and Equalizer for Steam Heat Steam Heat – and Equalizer Steam Heat – Systems

Text in the illustration

Hartford Loop and equalizer radiator an equalizer pipe is used to make sure that the pressure on the boiler water and the return pipe water are the same P P the Hartford Loop prevents water from draining out of the boiler if there is a leak in the wet return lines (upstream of the loop)
radiator
air vent
an equalizer pipe is used to make sure that the pressure on the boiler water and the return pipe water are the same
exhaust flue
hot steam
supply main
returning condensate
main vent
boiler water line
P
water
steam boiler
the Hartford Loop prevents water from draining out of the boiler if there is a leak in the wet return lines (upstream of the loop)
burner
cross section

Generated explanation

A building cross section shows a steam boiler supplying an upper-floor radiator through a supply main. Red arrows indicate steam flow, while blue arrows trace returning condensate toward the boiler through the return piping. An equalizer connects the steam piping to the boiler return connection to equalize pressure on the boiler water and return-pipe water. The Hartford Loop is highlighted near the boiler water line, illustrating how it prevents boiler water from draining away if an upstream wet return leaks. The drawing also identifies the radiator air vent, main vent, burner, and exhaust flue.

Components

steam boiler burner exhaust flue supply main radiator radiator air vent main vent condensate return piping wet return equalizer pipe Hartford Loop

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