No room for P-trap!

15 years ago

I have installed a Duravit handwashing basin (19 1/2 inch length and 10 1/4 inch wide). I also put in a Danze Corsair faucet and pop up assembly. The trick is when the plumber came today to install the p trap, there was not enough room. I have 4 inches from the wall to the center of the drain assembly pipe. Now what? Bottle-trap? If I use the bottle trap...how do I connect it from the hub in the wall, which is standard pvc, to a bottle-trap? All the pictures on the web look like the pipe from the wall is tiny. Are there standard bottle-traps that fit onto US pvc pipe and Danze faucets? I called the Danze people and they had no idea what I was talking about. Why would Duravit sell a sink that doesn't hook up to standard American piping and then not sell some kind of adapter? Sigh. Sorry, but I am now baking goodies for my plumber because this is taking multiple trips for him to deal with the weirdness that keeps happening with this tiny powderroom. I am not going into the whole toilet seat thing. Help will be deeply appreciated!

Featured Answer

davidro1

15 years ago

a p trap can be twisted into lots of shapes; it doesn't have to run in a straight plane.... just saying this in case it is not clear...

2. then , even with a full size trap (which can take on any shape), the plumber has the option under Code to run the sink drain over horizontally to somewhere towards the wall and then drop the drain down to the trap. This is in other words two tight radius elbows in the drain line, the first one right under the sink tailpiece and the second one above the ptrap.

3. he can also offset with two 45 degree turns (called one eighth bends)

4. any combination of the above is permissible too.

5. offset drains are made in one piece if you wish to have that too. The key words to search on are Tubular double-offset or just "offset drain" .

Executive Summary: you do not need any other P trap. The standard P trap works when you re-route the drain line to fit your space no matter how tight the space is.

-david

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Comments (7)

heimert
15 years ago
I think I have that same sink, or one very similar in size, and my plumber was able to get a p-trap in there. So maybe he needs to visit the supply house for something slimmer?
alphonse
15 years ago
I suggest you get another plumber- offsetting the trap is the likely solution, if counterintuitive.
Bottle traps aren't code compliant.
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homebound
15 years ago
Did the same plumber install the sink, or did you do that part and then call for the drain hook-up, etc.? It's best to figure it all out beforehand, of course.
maryranch
Original Author
15 years ago
I am a plumbing newbie and foolishly assumed that p-traps would work anywhere. Live and learn.

homebound: the plumber installed the sink.

Now that I am doing some belated research...I found out that the Porshe Elfe is even tighter from wall to center of drain assembly. How do they hook up one of those Elfe sinks using a p-trap? Since bottle traps are not code (Thanks alphonse for saving me from a really costly mistake. You folks are tops.)

Davidrol: Is what you are describing "offsetting" like alphonse suggested? I'll show the plumber the email if you don't mind. It seems to me if Elfe can do it, then it should not be beyond the plumber's skills.

Thanks all!
davidro1
15 years ago
you do some of the work now: you go plug in those key words I wrote out and find out what you can with your browser. Although I Could Copy images and show you stuff,,, it's just a never ending series of Q and A that I'm not paid for.... I won't be copying images to show you here. Go look at them on your own. I wrote out a long response, giving it a lot of thought first. Go get educated (visually at least), get at least some impressions, and post again within a few hours. Have fun .

-david
homebound
15 years ago
A bit edgy there. Bad day?

No room for P-trap!

davidro1

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heimert

alphonse

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No room for P-trap!

davidro1

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