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Please comment on this photo of Ultracom expansion vessel

Discussion in 'Plumbing and Central Heating' started by Rog200455, 17 Apr 2015.

  1. Rog200455

    Rog200455

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    This is the pipe union to the expansion vessel in my Glow Worm Ultracom 30cxi. See the white fur at the top of the nut and the green marks below. Do you think that this indicates a slight leak? My first instinct would be to attempt to tighten the nut, however thought I would ask you guys to comment first please?
     
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  3. slippyr4

    slippyr4

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    Inside the boiler casing is a gas safe fitters job I'm afraid.
     
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  4. gas_man_gaz

    gas_man_gaz

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    If it was leaking they would be staining underneath, on the inside of the combustion box. There isn't so I would leave well alone. Why was you looking? Has the pressure been dropping? Might be a idea to get it serviced/checked as you have opened the combustion box up
     
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  5. Rog200455

    Rog200455

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    The pressure drops very slowly - it has always needed topping up about 3 times a year but I suppose that is not excessive?
     
  6. GSXRCarlos

    GSXRCarlos

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    it doesn't seem wet, why are you in there?
     
  7. Agile

    Agile

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    Three times a year if from 1.0 to 1.5 bar when cold is not excessive at all and in fact rather good!

    Tony
     
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  9. gas_man_gaz

    gas_man_gaz

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    Dosnt sound excessive, if it was dropping more frequently I would check the vessel.
    as it is dropping slowly I would make sure there's no leaks on the rad valves as these can can easily go unnoticed, make sure to check the gland nuts (the seal from the valve to the shaft) and the pins on any trv's
     
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  10. muggles

    muggles

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    Comment on the photo?

    My comment is that you've taken off a cover that should only removed by an RGI.
     
  11. underwurlde

    underwurlde

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    I am not an RGI myself but once you have replaced the cover, how are you going to check for the subsequent leaking of any noxious gasses into your home?!

    Hence all the concerned warnings & leading questions as to why you've chosen to remove said cover. You have to now get it checked by an RGI.
     
  12. Rog200455

    Rog200455

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    Thanks for all replies and I am going to leave well alone. I understand the concerns raised - the boiler is being serviced this coming week
     
  13. Whitespirit66

    Whitespirit66

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    No need to panic. It's only a cover, not sealed.
     
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  14. muggles

    muggles

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    It very much is sealed., or was....
     
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