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One pipe radiator on a two pipe system

dvnyc Member Posts: 2
My home is heated by a two pipe steam, fed by a Weil Mclain steam boiler with the radiators that exit to a dry return through Hoffman 17c steam traps with one exception. There is one radiator that is setup with its own vent, and only a single pipe to the main. In the basement, I can see the capped original return pipe for that radiator. My guess is it was done when the kitchen was remodeled by the previous owner. Other than this one radiator hissing on startup, the heating system seems to work fine. How big of the deal is this? is it worth the effort reconfiguring this one pipe radiator back to a two pipe configuration?


  • Jamie Hall
    Jamie Hall Member Posts: 22,952
    As long as it's a conventional two pipe system -- main vents at the ends of the mains and on the dry returns -- there's no harm to it at all. Leave it be.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England