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    Michael Fullard's Avatar
    Michael Fullard Posts: 7, Reputation: 1
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    #1

    Aug 4, 2006, 09:54 AM
    Air lock in plumbing system.
    Sometimes when I turn off the tap's, the supply pipe start's to rattle.
    I am not on a pump system, and have a storage tank in the attic.
    I live in Ireland. House is 30 years old. Please help.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Aug 4, 2006, 10:43 AM
    Quote Originally Posted by Michael Fullard
    Sometimes when I turn off the tap's, the supply pipe start's to rattle.
    I am not on a pump system, and have a storage tank in the attic.
    Please help.
    Are you in the US and how old is your house. Regards, Tom
    Michael Fullard's Avatar
    Michael Fullard Posts: 7, Reputation: 1
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    #3

    Aug 4, 2006, 10:50 AM
    Quote Originally Posted by speedball1
    Are you in the US and how old is your house. Regards, Tom
    Ireland. 30 years.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #4

    Aug 4, 2006, 11:15 AM
    It didn't sound like you were in the states. Is your system gravity fed or do you have a booster oump? Over here we install air chambers, (shock absorbers, see image) on all bathroom sinks and the kitchen sink. These are hidden in the wall so you won't be able to see them. Can you call a plumbing shop and ask if you install them in your country? Regards, tom
    Michael Fullard's Avatar
    Michael Fullard Posts: 7, Reputation: 1
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    #5

    Aug 4, 2006, 12:01 PM
    Hello Tom.
    Thank you for your reply. I know the air chamber you are talking about,
    We do not use them in this country.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
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    #6

    Aug 4, 2006, 12:51 PM
    Quote Originally Posted by Michael Fullard
    Hello Tom.
    Thank you for your reply. I know the air chamber you are talking about,
    we do not use them in this country.
    Then your best bet is to make and install one of your own. Cut a tee into the supply from the storage tank and install a 3/4" pipe with a permanent cap about 14" long. This should absorb any shock caused by water hammer. Good luck, tom
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
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    #7

    Aug 4, 2006, 09:40 PM
    Michael this is just a thought but could it be possible that the pressure tank in the attic could be becoming "Waterlogged" if you are not familiar with this it is when the tank loses its air space and has too much water in it. Normally the air in the tank acts as a cushion when you turn off the water, because water does not compress it will ram the end of the pips and make a hammering noise.
    Not knowing what you have as a system it is hard to tell you how to remedy the problem if indeed this is the problem. But in short you have to introduce more air into the tank, normally a tank only fills about half full with water... the rest is air.
    Michael Fullard's Avatar
    Michael Fullard Posts: 7, Reputation: 1
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    #8

    Aug 5, 2006, 03:20 AM
    There is no cover on the tank,so air pressure is not the problem.
    Thank you.
    beerbal's Avatar
    beerbal Posts: 1, Reputation: 1
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    #9

    Jul 4, 2011, 08:50 AM
    1.You closed your tap to quickly.
    2.The pipes are not well fixed into its saddles.
    3.Your tank is made of metal and is fix on Iron sheet roofing.

    From Beerbal
    Plumbing Contractor.
    Mauritius
    afaroo's Avatar
    afaroo Posts: 4,006, Reputation: 251
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    #10

    Jul 4, 2011, 09:41 AM

    Hello Beerbal,

    You responded to a 5 years ld post, always check the date on the left upper corner, Thanks.

    John
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