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hi was just wondering in my house there is a two-pipe steam system  my guess it was put in around 1918 do you think the piping should be replaced  do to its age and the associated corrosion with steam heat or would it still be ok .


  • SnowmeltSnowmelt Posts: 1,155Member

    Unless it's leaking out of the pipe or badly corroded.

    Have some pics
  • Jamie HallJamie Hall Posts: 12,095Member

    will keep the piping nice and clean and corrosion free.  The only place you may have to worry is on wet returns, which should be inspected from time to time.  Even there, they are much more likely to corrode from the outside in, rather than the other way.
    Br. Jamie, osb

    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.

    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • PumpguyPumpguy Posts: 412Member

    Depends on the chemistry of the returning condensate.  So long as it's alkaline, above 7 on the pH scale, you should be fine.  If it's acid, below 7, you can expect all kinds of problems with iron and steel piping.  
    Dennis Pataki. Former Service Manager and Heating Pump Product Manager for Nash Engineering Company. Phone: 1-888 853 9963
  • jumperjumper Posts: 1,397Member
    two pipe in 1918?

    Was this one of the first? Where is it?
  • nicholas bonham-carternicholas bonham-carter Posts: 8,071Member
    Longevity of 2-pipe system

    The pipes will likely be fine, although you may need some trap repair.--NBC
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