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Old 05-31-2008, 04:23 PM   #1
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I am installing my new bathroom sink. I had someone doing my plumbing, but is unrelieble about coming over to finish. he had spoke of putting in a studer valve in the drain for the sink. Is this required? the drain pipe is vertical through the floor, is this another issue. all books I've looked at for home improvement show drains through the wall. Is it done different if it's through the floor. Greatly appreciate any help on this. Thank you.

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Old 05-31-2008, 09:53 PM   #2
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Yes you need a vent, and if your code allows studor vents then install one as high as possible under the sink, off the top of a santee.

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Old 05-31-2008, 11:55 PM   #3
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Yes you need a vent, and if your code allows studor vents then install one as high as possible under the sink, off the top of a santee.
If at all possible, it's better to extend your vent through the roof in my opinion. Code describes vents (our code anyway) as being able to provide airflow throughout the entire system. These 'studor vents' only allow airflow in one direction, therefore currently, our codebook does not allow them.

The other problem with these 'studor vents' is that spiders like to climb into them when they're open, because they feel the airflow and decide that bugs will be getting sucked or blown through it. What happens when the spider gets squished in there? The vent is stuck open, and your bathroom now smells like poopy-poops.

If the wall is open, drill some holes, and get a roofer to put a jack on for you. Much more better.
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Old 06-01-2008, 12:41 AM   #4
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Actually Alan they do allow them here in Oregon, I thought you was in Brookings, I was surprised when I found out about them, not that I would use one.
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Old 06-01-2008, 09:19 AM   #5
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Although normally used for island sinks, I have used them for years (in States where allowed) and had no problems. I alway install the threaded type in case there would be a problem. I have heard that they can "wear out" but have not seen it happen yet.
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Old 06-01-2008, 09:48 AM   #6
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Normaly when a drain comes out of a wall, horizontaly, its connected to a stack that vents at the roof.

Based on your questions re. a Studor, theres no existing or accessible vent nearby, and this is the situation that these valves are designed for.

If permitted by code, installed correctly, and an understanding that it will eventualy need to be replaced, they work well for what they are intended for.

Make sure that drain going thru the floor is trapped properly.
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Old 06-01-2008, 11:17 AM   #7
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Actually Alan they do allow them here in Oregon, I thought you was in Brookings, I was surprised when I found out about them, not that I would use one.

Really? I do work in brookings. I was under the impression that they were illegal.... Is that in the new codebook? Maybe its one of those "use it if you can't do anything else" situations ?
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Old 06-01-2008, 04:32 PM   #8
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Really? I do work in brookings. I was under the impression that they were illegal.... Is that in the new codebook? Maybe its one of those "use it if you can't do anything else" situations ?
Yea new code.

Your signature once said Brooking in it if I recall, did it not?
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Old 06-02-2008, 09:46 AM   #9
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Yea new code.

Your signature once said Brooking in it if I recall, did it not?


Is that new book actually approved? I had heard it was not yet... that was a couple of weeks ago, however.

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