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Galvanized pipe, why not a good idea?

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Al Roethlisberger
Al Roethlisberger Member Posts: 194
in THE MAIN WALL
I've seen it mentioned a few times when someone spots galvanized pipe in a job that it ought to be replaced with regular black steel.  Why is this?



I have an example where the very top venting "antler" setup in my attic was constructed of 3/4 galvanized, and wonder if this is really a big deal to go replace with black steel?



Al

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  • Ron Jr._3
    Ron Jr._3 Member Posts: 603
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    Not sure

    what you mean by " venting antler setup " , but if it's a closed hot water system , I don't see the harm in having galvanized piping .
  • Unknown
    Unknown
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    Al,,,,,

    I cannot see any reason,,,, leave-it be.
  • Al Roethlisberger
    Al Roethlisberger Member Posts: 194
    edited November 2009
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    Thanks.

    Yes, it is closed hot-water.



    Thanks  :)



    Al

    There was an error rendering this rich post.

  • hot_rod
    hot_rod Member Posts: 22,221
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    galvi is a no no

    with glycol, but should be fine on HW.



    Even on a closed loop hydronic I would keep copper and galvi separated by brass or bronze, they seem to not get along well when they butt heads.



    hr.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
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