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Shale/contaminant in boiler valve - worth getting a filter?

Discussion in 'Plumbing and Central Heating' started by MICH43L, 29 Dec 2020.

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  1. MICH43L

    MICH43L

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    Hi all.

    We have a new combi boiler brought down by shale/contaminants in the gas supply.

    All fixed under warranty, but not sure whether the issue will have been fully resolved by a recent internal pipework upgrade from 22mm to 28mm, or if the cause will be upstream in the meter or supply.

    Boiler guy blew out what he could, but I want to ask the forum about their experience of natural gas filters, magnetic or otherwise, and whether it would be worth getting one fitted.

    Thanks
     
    Last edited: 29 Dec 2020
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  3. ianmcd

    ianmcd

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    Magnetic filters are for CH system water , not for the gas supply, the shale is coming from the gas mains supply and only the gas transporter can install a filter on it
     
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  4. MICH43L

    MICH43L

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    Yes, the boiler guy mentioned magnetic, but i can only find y strainers and Sulphidation Filters.
     
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  5. ianmcd

    ianmcd

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    Yes Y strainers are the most common, the shale or black dust as it is sometimes known, comes from the days when cast iron mains pipes were used and it is a dust that was created by them, but according to transporters now it doesnt exist, but I assure you it does, admittedly not so common now as most mains are now PE, but some areas are worse than others
     
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  6. MICH43L

    MICH43L

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    I guess the only question is how they affect gas pressure.
     
  7. ianmcd

    ianmcd

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    wont affect the gas pressure unless they get completely blocked
     
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