Gas and Galvanized pipe

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by tractng, Nov 11, 2007.

  1. tractng

    tractng New Member

    Messages:
    2
    Guys,

    Last night, we were installing the water heater that sits inside our house.


    We were short of a part so we end up using an 1 inch connector that was made for gas (black color) instead of the galvanized ones.

    This connector screw into the outgoing water hot water thread then connects to the copper flexible pipe.

    It was late so all of the stores closed. Is this okay?


    Thanks,
    Tony
  2. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,308
    Location:
    Yakima WA
    For a temporary fix, it's OK. There's nothing toxic in black iron pipe. However, why are you even considering galvanized pipe? This will eventually rust. The special nipples that should have come with the tank will not rust. You should get a couple of them and replace the black iron, but it's not an emergency repair.
  3. tractng

    tractng New Member

    Messages:
    2
    Gary,

    What do you mean for temporary its okay? You highly suggest I replace it? I cannot leave there permanently?

    Originally the flexible copper pipe should have gone straight into the nipple of the heater, but it wasn't long enough.


    The new heater came with the nipple attached.

    Tony
  4. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,308
    Location:
    Yakima WA
    I misunderstood your original post. You have the correct nipples. (the ones that came with the tank) What you need to do now is either get longer flex pipes, lengthen the pipes that feed the flex pipes, or raise the tank. I'd obviously opt for the longer flex pipes, because it's quicker than sweating new supply line pipe. The black iron nipples are "temporary" because sooner or later they will rust. It won't happen in a day or two, even a week or a month, so it is not anything that you have to rush out and deal with on a holiday.
  5. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    I would disagree a little with Gary who said the black nipple wont rust in a "day or two, or week, or even a month." I would suspect that within a week you will have serious rust inside and out on that nipple, and within a month you could start to have rust stains on you sink or tub.

    I am always a little on the paranoid side, but black iron rusts very quickly. Remember, this is a malleable steel nipple, not cast iron, which is different.

    If you leave it very long, you may have trouble getting it out. I would just put changing this at the top of your to-do list.
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