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Old 12-08-2009, 05:07 PM   #1
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drain gulping


i just installed a new double sink with disposer, both down tubes are 1 1/4" and they go to a tee which goes down to a 1 1/2" trap and out the 1 1/2 " drain. a couple of seconds after the water has been turned off i'm getting a gulping noise. it does it about 3-4 times then stops. it does it every time i turn the water then off. what have i done wrong

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Old 12-09-2009, 12:17 AM   #2
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drain gulping


1. Your system is vented , right?
2. the run from the p trap down the drain is how long? hopefully more than 4 inches so your not causing a siphon to the p trap...

tell me where if it is vented, the vent comes into your line...


Last edited by wiley0714; 12-09-2009 at 12:24 AM.
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Old 12-09-2009, 07:08 AM   #3
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drain gulping


thanks wiley luckily i left a 4" piece of pipe above the trap and someone else said to put a whats called a quick vent or i think he called it a studor vent ( used for venting in rehab condo's or townhouses ) thanks again for the reply
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Old 12-09-2009, 08:39 AM   #4
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drain gulping


It does sound like a venting problem. AAV's (Air Admittance Valves) are made by a few companies but Studor is the top of the line. I am wondering about the 1-1/4" piping though. Kitchen sinks are normally 1-1/2". Bathroom sinks are the only 1-1/4" drains I have seen or installed.
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Old 12-09-2009, 11:56 AM   #5
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drain gulping


Quote:
Originally Posted by majakdragon View Post
It does sound like a venting problem. AAV's (Air Admittance Valves) are made by a few companies but Studor is the top of the line. I am wondering about the 1-1/4" piping though. Kitchen sinks are normally 1-1/2". Bathroom sinks are the only 1-1/4" drains I have seen or installed.
the 1 1/4" pvc down pipe i was refering to was the size that came with the garbage disposal and it goes almost immediatly to the 1 1/2 trap. i put the studor vent on this morning and it works fine now. the reason i didn't vent it was before i installed the new counter tops and sink there wasn't a vent on the drain for twenty years and never had that problem. after changing the drains to fit the new sink i guess i did a better job than the guy twenty some years ago. thanks for the reply
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