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Steam - Galv. Pipe

gehring
gehring Member Posts: 65
in THE MAIN WALL
Thank you. Finally an explanation. I had been asking at my local plumbing supply house and among various tradespeople and everyone would just say "it's against code", etc. but no one knew WHY exactly. I always like to know the "why" behind everything. Thanks for the insight.

Comments

  • gehring
    gehring Member Posts: 65
    Galv. Pipe



    Why is it against code to use galv. pipe for steam systems? What are the specific properties or problems with it as opposed to black iron?
  • bigugh_4
    bigugh_4 Member Posts: 406
    Galvanizing ?

    Steam systems usually remove the zink coating inside the Gal. pipe and place it as a sludge in the boiler, dirting it! It has to do with the Ph of the steam and water in a steam system. black iron resists this just fine.
  • Mad Dog
    Mad Dog Member Posts: 2,595
    True enough, but any veteran boilerman will confess

    to using galvanized in a pinch...you know, sunday night, 9pm.....5 degrees outside. My father-in-law even "liberated" a piece of 2" galvanized pipe from a chain link fence behind a garage to finish piping a steamer one cold and hoary night. Mad Dog

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