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Any plumbers here? Toilet making loud "banging" noises....

Discussion in 'Off Topic [BG]' started by Tony G, Mar 31, 2009.


  1. Tony G

    Tony G

    Jan 20, 2006
    NY
    I'm having a problem with the (one and only) toilet in my small, end unit townhouse. Whenever you flush it, as it is just about filled up, there is a noise that can be as soft as a small knocking, to as loud as a jackhammer type effect. I did a little research and it seems I might have a water hammer issue? Can anyone help me explain why this happened, and how I can fix it?
     
  2. hover

    hover

    Oct 4, 2008
    Massachusetts
    do you notice varying water pressure in your dwelling?

    If it is very high that can cause the loud hammering sound when it finishes filling...you can back off on the water valve a tad and see if it starts to alleviate it...may take a bit longer to fill, but less stress on the pipes.

    Also, check all your pipe anchors along the dwelling to ensure none are loose / rattling.
     
  3. Tony G

    Tony G

    Jan 20, 2006
    NY
    I should mention I know very little about plumbing. I can't see any pipes in my house. I have no basement, and all the pipes run through the walls. I'll try what you recommend about backing off the water valve and see what happens.

    Any more advice from everyone would be greatly appreciated. I'd like to get as many options as possible before I tackle this when I get home from work.
     
  4. hover

    hover

    Oct 4, 2008
    Massachusetts
    gotcha. the clang could be many things (without the benefit of actually hearing the clang) so it's hard to tell. I wish you the best of luck.
     
  5. TheDarkReaver

    TheDarkReaver Banned

    Mar 20, 2006
    Lincolnshire, UK
    Your toilet is possesed. Consult your local priest immediately.
     
  6. TallLankyBastyd

    TallLankyBastyd

    Jan 31, 2007
    Seattle
    Yeah... sounds like "water hammer" to me...

    Try this...

    Good luck!
     
  7. Tony G

    Tony G

    Jan 20, 2006
    NY
    Thanks guys, keep the suggestions coming. I think I'm going to try the priest suggestion first though.
     
  8. TallLankyBastyd

    TallLankyBastyd

    Jan 31, 2007
    Seattle
    Funny you should say that...

    It seems that whenEVER I deal with plumbing issues I find myself screaming out Gawd & his son's names (along with other choice "words") at high volumes and at an alarming rate....

    ...and I'm an atheist!?!

    :rolleyes:
     
  9. Toiletgeist , if you ask me.
     
  10. hover

    hover

    Oct 4, 2008
    Massachusetts
    Cross over turdlings...all are welcome...there is peace and tranquility, in the drain....

    zelda.

    This tank is clean.
     
  11. MakiSupaStar

    MakiSupaStar The Lowdown Diggler

    Apr 12, 2006
    Huntington Beach, CA
    Maybe you should eat more vegetables.
     
  12. Joe Gress

    Joe Gress

    Dec 22, 2005
    Pueblo, CO
    Rocks?
     
  13. RWP

    RWP

    Jul 1, 2006
  14. Tony G

    Tony G

    Jan 20, 2006
    NY
    While I expected the "fun" replys, I was actually hoping for some more real advice on what to do. Nobody else here as ever experienced this?
     
  15. Tony G

    Tony G

    Jan 20, 2006
    NY

    Thanks for the advice. I was hoping somebody else here had experienced a similar problem to the one I'm having. I'll give this a try as well.
     
  16. RWP

    RWP

    Jul 1, 2006
    I am not a plumber but as far as plumbing repairs go this is about as simple as they get. When the valve get old it can vibrate or just slam shut at the end of the fill cycle causing the pipes in the house to make CRAZY noises. All I used was one adjustable wrench to remove the old valve. Get a bucked and towels ready to catch the water in the fill tank. Line up the fill hose carefully when you reattach the line and don't over tighten the connections. PS if your house floods I will not take ANY responsibility. :D
     
  17. Thor

    Thor Gold Supporting Member In Memoriam

    The first action is to replace the toilet valve mechanism
    inside the tank as suggested by RWP. Either yourself or
    your friendly home handyman. Only real friends will help
    work on your toilet. Thus Maki and Gard will not be there to help.
    Beer is the expected friend payment. Depending an the job, I
    recommend minimum 12 pack plus your beer.

    If it truly is water hammer, it is caused by high pressure in
    the water lines. Some lines that do this can have 50-70 P.S.I.
    in them.This you cannot cure on your own if you have no plumbing
    skills.

    Typically a pressure reducing valve which has an internal
    spring is installed near the water meter and adjusted down to
    30 P.S.I. The spring acts as a force against the excess
    pressure, reducing the pressure downstream.

    Cranking down the supply valve will only lessen the
    available flow, but it will not reduce the pressure in the line.

    The other fix is to install a 'dead end' on the piping that has
    air in it. When the water hammers the air leg acts as a cushion
    or shock absorber, reducing the 'slam'. The leg is installed in an area
    higher than most of the other piping legs.

    Both of those fixes will require work by someone with basic
    piping skills.
     
  18. Tony G

    Tony G

    Jan 20, 2006
    NY
    Great! Thanks for this. :)


    Fair enough. :D
     
  19. Tony G

    Tony G

    Jan 20, 2006
    NY

    Thanks Thor. As mentioned, I'll try what RWP suggested first. If that doesn't do the trick, it looks like I'll be calling the plumber (or priest ;)).
     
  20. RWP

    RWP

    Jul 1, 2006
    That is interesting Thor, I wish I had a one in my house!
     

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