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-   -   Sewer gas from Laundry drain (http://www.diychatroom.com/f7/sewer-gas-laundry-drain-5082/)

jeepwillies 11-28-2006 07:10 PM

Sewer gas from Laundry drain
 
I have roughed in my plumbing for my laundry (moved it to main level from basement) and I currently have the drain pipe plugged up with a plastic bag. The problem is that if I put my nose close to the drain I can really smell sewer gasses, and if I take the bag out....wow what a smell!!

My concern is that when I move my washer upstairs and install the drain line, that only just rests in the pipe, not sealed, the smell is going to be awfull.

Is there anything I should do or check? Should I have a P trap on the washer drain line?

I have the drywall up, but not mudded and taped, so I can remove it if need be. Although the drywaller is coming on Friday to finish it up.

Any ideas?

jeepwillies 11-28-2006 07:14 PM

wait a minute....to maybe answer my own question.

I have not used anything on this stack yet, or no water has gone down it yet. Does that mean the trap in the floor may be dry?

tool7106 11-28-2006 07:25 PM

Make sure theres water in the p-trap.

jeepwillies 11-28-2006 07:45 PM

I didn't install a p-trap? Is there one in the floor drains?

Ron The Plumber 11-28-2006 11:01 PM

Yes you need a P-Trap at the laundry.

jeepwillies 11-29-2006 10:15 AM

Oh, I thought that the force that the washer pushes the water out would empty a P-Trap? So thats not the case?

Thanks for your help!

jeepwillies 11-29-2006 11:23 AM

1 Attachment(s)
So where should I put my P trap? See attached.

D

J187 11-29-2006 03:00 PM

Quote:

Originally Posted by jeepwillies (Post 25256)
Oh, I thought that the force that the washer pushes the water out would empty a P-Trap? So thats not the case?

Thanks for your help!

That may be the case for the first rush of water, but what about the very last bit? There wouldn't be anyting driving it hard, thus it stays in the trap.

jeepwillies 11-29-2006 05:45 PM

Any idea on how to hook up the P trap in my situation?

Ron The Plumber 11-29-2006 05:55 PM

Cut in a tee and then the trap, is this vented?

jeepwillies 11-29-2006 05:58 PM

There is not a direct vent as it is not code. Should I direct vent it? Also based on my diagram, where would I put in the T?

Ron The Plumber 11-29-2006 06:05 PM

1 Attachment(s)
Here you go trap and drain should be 2"

Vent should be 1-1/2"

jeepwillies 11-29-2006 06:09 PM

Thanks RTP!

Ron The Plumber 11-29-2006 06:10 PM

Your welcome


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