Two pipe system

Heating · Introduction · printed page 199 (PDF page 200)

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Book index entries

Steam Heat – Systems

Text in the illustration

radiator valve
radiator
typically sloped 1" per 20' (down and away from the boiler)
supply pipe
thermostatic trap (steam trap)
exhaust flue
supply main
returning condensate
hot steam
equalizer pipe
main vent
F & T trap (steam trap)
boiler water line
water
steam boiler
Hartford Loop
wet return
burner
cross section

Generated explanation

This building cross section illustrates a two-pipe steam heating system with a basement boiler supplying an upper-floor radiator. Red arrows show steam moving through the supply main and supply pipe to the radiator valve, while blue arrows indicate returning condensate through separate return piping. The radiator outlet has a thermostatic steam trap, and the main piping includes an F & T steam trap and a main vent. An equalizer pipe, Hartford Loop, and wet return connect near the boiler, with the boiler water line marked for reference. The supply main is annotated as typically sloped 1 inch per 20 feet down and away from the boiler; the burner and exhaust flue are also shown.

Components

steam boiler burner exhaust flue radiator radiator valve steam supply main supply pipe thermostatic steam trap F & T steam trap main vent condensate return piping equalizer pipe Hartford Loop wet return

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