Home Page link

continuing knocking sound in water pipe half an hour after all water off

Home| Search | About
Login Password
Register Now! Lost Password?

Home Repair - - If it ain't broken, don't fix it. Otherwise look here. 

Bookmark this page:  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
continuing knocking sound in water pipe half an hour after all water off shadowknightcc 07-03-2007
If you were  Registered and logged in, you could reply and use other advanced thread options
Posted by on July 3, 2007, 2:30 pm
This knocking pipe problem is really strange. It is a weak knocking
sound 2 or 3 times per second normally happened at night time in about
half an hour after all water usage is stopped. Once it started, it
will keep knocking till the next morning. It really drives me crazy.
The only way I found that can stop it temporarily is using water like
flushing the toilet. It will stop the knocking about another half an
hour. So imaging that, wake up by the noise at 1:00AM, flush the
toilet, try to get back to sleep before 1:30AM, if not, flush again...
Anyone can give some advice?


Posted by Edwin Pawlowski on July 3, 2007, 3:40 pm

> This knocking pipe problem is really strange. It is a weak knocking
> sound 2 or 3 times per second normally happened at night time in about
> half an hour after all water usage is stopped. Once it started, it
> will keep knocking till the next morning. It really drives me crazy.
> The only way I found that can stop it temporarily is using water like
> flushing the toilet. It will stop the knocking about another half an
> hour. So imaging that, wake up by the noise at 1:00AM, flush the
> toilet, try to get back to sleep before 1:30AM, if not, flush again...
> Anyone can give some advice?
>

Instead of wasting the water on a flush, take diuretics and make the flush
do something.

Do you have shut off valves for each fixture? Try shutting off some of
them, or a zone if a section must be shut down and see if that stops it or
help locate the problem. My guess is that a toilet valve is not closing
properly and while barely visible, is very loud. That would be the first
place to check.



Posted by beecrofter on July 3, 2007, 6:12 pm
On Jul 3, 2:30 pm, shadowknigh...@gmail.com wrote:
> This knocking pipe problem is really strange. It is a weak knocking
> sound 2 or 3 times per second normally happened at night time in about
> half an hour after all water usage is stopped. Once it started, it
> will keep knocking till the next morning. It really drives me crazy.
> The only way I found that can stop it temporarily is using water like
> flushing the toilet. It will stop the knocking about another half an
> hour. So imaging that, wake up by the noise at 1:00AM, flush the
> toilet, try to get back to sleep before 1:30AM, if not, flush again...
> Anyone can give some advice?

try shutting off the supply to the toilet


Posted by jmagerl on July 3, 2007, 10:21 pm

> On Jul 3, 2:30 pm, shadowknigh...@gmail.com wrote:
>> This knocking pipe problem is really strange. It is a weak knocking
>> sound 2 or 3 times per second normally happened at night time in about
>> half an hour after all water usage is stopped. Once it started, it
>> will keep knocking till the next morning. It really drives me crazy.
>> The only way I found that can stop it temporarily is using water like
>> flushing the toilet. It will stop the knocking about another half an
>> hour. So imaging that, wake up by the noise at 1:00AM, flush the
>> toilet, try to get back to sleep before 1:30AM, if not, flush again...
>> Anyone can give some advice?
>
> try shutting off the supply to the toilet
>

Yep. the toilet. The flapper has a slow leak which causes the water valve to
turn on very slowly making all sorts of evil noises. Fix is to replace the
flapper and while you have everything apart replace the fill valve also,

CHeck this by turning off the toilet water and see if the tank drops any
over night



Posted by on July 4, 2007, 11:15 am
Thanks for the advices. I turned the toilet water off last night. It
seems work. I will retest it tonight to confirm it.



>
>
> > On Jul 3, 2:30 pm, shadowknigh...@gmail.com wrote:
> >> This knocking pipe problem is really strange. It is a weak knocking
> >> sound 2 or 3 times per second normally happened at night time in about
> >> half an hour after all water usage is stopped. Once it started, it
> >> will keep knocking till the next morning. It really drives me crazy.
> >> The only way I found that can stop it temporarily is using water like
> >> flushing the toilet. It will stop the knocking about another half an
> >> hour. So imaging that, wake up by the noise at 1:00AM, flush the
> >> toilet, try to get back to sleep before 1:30AM, if not, flush again...
> >> Anyone can give some advice?
>
> > try shutting off the supply to the toilet
>
> Yep. the toilet. The flapper has a slow leak which causes the water valve to
> turn on very slowly making all sorts of evil noises. Fix is to replace the
> flapper and while you have everything apart replace the fill valve also,
>
> CHeck this by turning off the toilet water and see if the tank drops any
> over night



Similar ThreadsPosted
Continuing water heater troubles March 25, 2006, 4:29 pm
Clicking (maybe knocking) Water Heater during use August 24, 2005, 8:32 am
Water and sewer bills dependent on water supply pipe diameter December 14, 2007, 7:41 am
"crying" sound from the hot water tap...? November 26, 2006, 5:35 am
Faucet: Hot water different sound.... February 22, 2007, 12:48 pm
Popping sound in the water heater January 31, 2007, 1:55 pm
How can I dampen the sound of water running thru my pipes? June 15, 2005, 3:02 am
Water Pipe Rattling at Water Heater January 8, 2006, 7:51 pm
Water comes in thru municipal water pipe in floor February 13, 2008, 1:31 pm
A/C in my garage is making a dripping sound... water coming out from the drain October 18, 2006, 7:35 am

Contact Us | Privacy Policy

XML SitemapXML Sitemap