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Steam Pipe expansion

RGM Member Posts: 1
How much would a 1" diameter, 10 foot long iron steam pipe expand from room temperature to 212 degrees?


  • crash2009
    crash2009 Member Posts: 1,484
    How accurate

    of an answer do you need?  Off the cuff, I would say "about one half inch"  If you need something more accurate than that, you need to provide more parameters.  Research: "linear thermal expansion of various pipes"


  • BobC
    BobC Member Posts: 5,479
    at least 1/4"

    i don't know exactlyhow far that pipe will expand but I can tell you that a 2" steam main that circles my chimney (about 12 ft long) expands about 1/4" and perhaps a bit more. When cold, the main vent is touching a cold water pipe but when it's full of steam that 2" iron pipe is 1/4" away from the vent.

    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
  • Brad White
    Brad White Member Posts: 2,398
    From 70 to 212 in 60 seconds....

    About 1/8th of an inch.
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"

    -Ernie White, my Dad
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