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  1. #1
    Noobish Pirate hueybot3000's Avatar
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    Default Leaking Hot Water Cylinder

    Our house is 1960's, cylinder is original...manufactured date is 1964...
    Tonight we noticed it's leaking out of the bottom. I was hoping it was a pipe which I'd be comfortable tackling myself but it's coming from the fitting that looks to be part of the cylinder. Click image for larger version. 

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    Can anyone tell me if this part is replaceable? Or is it just a point prone to corrosion and it's time is up? The leak isn't that bad so it can wait until Monday for a plumber but I'd like to have an idea of what I'm in for.

    We have got a couple of quotes for converting to gas in the recent months anyway so maybe this is a sign...

  2. #2
    Senior Member
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    Default Re: Leaking Hot Water Cylinder

    Looks like an Essex flange with a gas filler grommet.

    Could replace it but it'll eventually happen again as the gasket breaks down. Brazing it would be an option and should last longer.

    You would be due for a new cylinder, the impurities inside it and that newer cylinders are probably more efficient would be better in the long run.

  3. #3
    Old guy
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    Default Re: Leaking Hot Water Cylinder

    What Kame said.

    I would be reluctant to convert to gas now that the Goverment has effectively killed the industry. The costs can only increase rapidly as our current supplys run down over the next several years.

  4. #4
    Soaring like an Eagle gary67's Avatar
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    Default Re: Leaking Hot Water Cylinder

    Using gas here in the tiny house, its good but not great, personally you would be better off replacing the cylinder as Clive said gas will get more expensive, I'm about to start building our new house in the next few weeks and although keeping gas for the cooktop will be going wetback rural fire and electric for the hot water but also putting in a solar grid tied system for the electrics

  5. #5
    Senior Member piroska's Avatar
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    Default Re: Leaking Hot Water Cylinder

    Your cylinder is stuffed. No parts cannot be replaced as you think.

    New cylinder time, 1964? It did well....
    Ex-pctek

  6. #6
    VoidMaster
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    Default Re: Leaking Hot Water Cylinder

    Looks very much like my cylinder after the second large earthquake here in Christchurch, the inner lining has been breached I would say, time for a new cylinder.
    It's not the least charm of a theory that it is refutable. The hundred-times-refuted theory of "free will" owes its persistence to this charm alone; some one is always appearing who feels himself strong enough to refute it - Friedrich Nietzsche

  7. #7
    amateur expert dugimodo's Avatar
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    Default Re: Leaking Hot Water Cylinder

    An alternative that may be worth looking into if you are replacing is heat pump water heaters, I worry about the noise and the long term reliability but am considering it myself as the option with the cheapest running costs.
    That and I've run out of other ways to reduce my power bill short of installing solar
    Ryzen 2700X, 16Gb DDR4RAM, 512GB M.2 NVME SSD, MSI GTX1070

  8. #8
    Large Member plod's Avatar
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    Default Re: Leaking Hot Water Cylinder

    Quote Originally Posted by gary67 View Post
    Using gas here in the tiny house, its good but not great, personally you would be better off replacing the cylinder as Clive said gas will get more expensive, I'm about to start building our new house in the next few weeks and although keeping gas for the cooktop will be going wetback rural fire and electric for the hot water but also putting in a solar grid tied system for the electrics
    i think bottle gas in the South Island will alway be expensive. Different story in the north where you have mains gas
    samsung, discovering a new galaxy every month

  9. #9
    Soaring like an Eagle gary67's Avatar
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    Default Re: Leaking Hot Water Cylinder

    Quote Originally Posted by plod View Post
    i think bottle gas in the South Island will alway be expensive. Different story in the north where you have mains gas
    $30 for a 9Kg refill here in Hanmer and I think $38 for swap-a-bottle

  10. #10
    Large Member plod's Avatar
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    Default Re: Leaking Hot Water Cylinder

    Quote Originally Posted by gary67 View Post
    $30 for a 9Kg refill here in Hanmer and I think $38 for swap-a-bottle
    I was more meaning of running cost of natural gas compared to lpg.
    samsung, discovering a new galaxy every month

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