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Author Topic: Loud gurgling noices in kitchen sink waste  (Read 2323 times)

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Offline Maleko

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Loud gurgling noices in kitchen sink waste
« on: April 27, 2012, 07:38:53 PM »
Hi,
We have an 11 yr old home and have been here 3 years.  In the past few nights there have been loud gurgling noises from the kitchen sink drain.  It would sound like air coming up through the waste pipe?
The noise is very loud and can be heard in post parts of the house.
The gurgling lasts only a few seconds and doesn't seem related to any other activity.  I.e. no one using the shower/laundry/dishwasher/etc at these times.  Tonight there have been three episodes of the noise.  The frequency of these noises is increasing.

Any advice on causes and solutions are very welcome.

Cheers - Mark



Linkback: http://www.plumbers.co.nz/forum/ask-plumbers-public/2/loud-gurgling-noices-in-kitchen-sink-waste/1087/
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Offline Plumber

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Re: Loud gurgling noices in kitchen sink waste
« Reply #1 on: May 02, 2012, 08:46:02 PM »
Hi Maleko, did you inspect the Overflow Relief Gully outside? Is it plastic or copper waste pipe (should be able see in the gully). Also have a look what runs into the gully just run your kitchen tap then look into the gully to see if water is coming through follow this process for all your fixtures. I could be your drain is slightly blocked or one of the waste pipes has a dip creating a trap.
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Offline roberto

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Re: Loud gurgling noices in kitchen sink waste
« Reply #2 on: May 03, 2012, 08:50:07 PM »
how long is the waste pipe? what size is it?
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Offline Maleko

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Re: Loud gurgling noices in kitchen sink waste
« Reply #3 on: May 14, 2012, 08:15:52 AM »
Hi "Plumber" and "roberto",

Thanks for your replies.
I checked and cleared out the Gully and it all seems OK.
The waste pipe is about 40mm and the distance from the kitchen sink to the Gully is  almost 12 metres.
Fortunately, after about a week of gurgling - mainly in the evenings, the noises have now stopped and we've not heard anything for about 10 days.

Thanks.
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Offline Plumber

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Re: Loud gurgling noices in kitchen sink waste
« Reply #4 on: May 14, 2012, 04:01:25 PM »
Happy to hear the noise is gone Maleko. always a pleasure. If it comes back get a vented trap, 12 meters is very long for a 40mm pipe.
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Offline roberto

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Re: Loud gurgling noices in kitchen sink waste
« Reply #5 on: May 15, 2012, 09:34:49 PM »
Yeah isnt the max length a waste pipe can be is 3.5m unvented???, wow, 12m! does the waste pipe fall at a nice even grade or does it go up and down in waves?
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Offline robbo

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Re: Loud gurgling noices in kitchen sink waste
« Reply #6 on: May 16, 2012, 07:22:51 AM »
hi guys, so true Roberto that length of pipe would need .300mm of fall to operate properly, yes and vented,cheers
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Offline roberto

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Re: Loud gurgling noices in kitchen sink waste
« Reply #7 on: May 16, 2012, 09:55:21 AM »
if its taking a dishwasher and waste disposal id run it in 50mm or maybe even 65mm incase of blockages!
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Offline robbo

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Re: Loud gurgling noices in kitchen sink waste
« Reply #8 on: May 16, 2012, 10:57:06 AM »
hi guys, Roberto, a waste disposable is supposed to be separate from the sink waste if it has it`s own bowl,cheers
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Offline roberto

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Re: Loud gurgling noices in kitchen sink waste
« Reply #9 on: May 16, 2012, 03:52:59 PM »
no need to be pidantic robbo! and i wouldnt be going off branz as well!
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Offline integrated

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Re: Loud gurgling noices in kitchen sink waste
« Reply #10 on: May 16, 2012, 08:29:40 PM »
yeah isnt the dishwash drain hose "supposed" to be min 50mm above overflow level of sink to prevent backflow to dishwash if it floods as well?





now whos being pEdantic?!?                 :P                     ;D
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