Washer/Laumdry tub drain


Old 09-15-11, 04:45 AM
Thread Starter
Join Date: Jul 2010
Location: USA
Posts: 83
Received 0 Votes on 0 Posts
Post Washer/Laumdry tub drain


I asked a question about this a while back but I'm just starting to get around to it now. I want to plumb a drain for my washing machine and connect it to the current drain that is installed for the laundry tub. This is a basement laundry room so the drain is in the floor and there is no venting around so I'll be using air admittance valves. The washer drain will be housed in an Oatey laundry box, installed between the studs. I was just wondering if anyone knew of a picture/sketch of this situation or a similar one that I could refer to, or maybe someone could draw one up real quick. I'd really appreciate any help. Thank you.

Sponsored Links
Old 09-15-11, 06:43 AM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 17,799
Received 10 Votes on 8 Posts

If you have a laundry sink there, then there is a vent. Where the sink goes into the wall there should be a 2" line. Tie the washer in line the pictures. All 2" and trap. Make sure you keep the washer box with in like 10 ft of the vent.

Mike NJ
Old 09-15-11, 07:31 AM
Thread Starter
Join Date: Jul 2010
Location: USA
Posts: 83
Received 0 Votes on 0 Posts
The sink doesn't go into the wall, it drains directly underneath into a drain in the concrete floor. I posted photos in my previous post, I'd attach it to this one but I'm responding from my phone. The only waste/drain plumbing in this room is all under the floor for the sink, floor drain, and toilet.
Old 09-15-11, 03:22 PM
NJT's Avatar
NJT is offline
Join Date: Oct 2006
Location: USA
Posts: 23,539
Received 2 Votes on 2 Posts
Not much left of that stud is there?

Is this the old thread?


Why didn't you just continue with that old thread? Maybe a mod here can merge the threads back into one...

Mike, don't washer drains all have to be 2" ?

I think if you try to force that washer drain into 1-1/2" you may end up finding that the pipe can't take the full flow... much better in this case to simply drain into the laundry tub and let that gravity drain to the sewer.
Old 09-15-11, 04:09 PM
Thread Starter
Join Date: Jul 2010
Location: USA
Posts: 83
Received 0 Votes on 0 Posts
Yeah that's the thread! I didn't think to continue it in the same thread. Last resort would be to drain it directly into the laundry tub, I just don't like the look. But of course, if my only other option would involve tearing up the cement, I'd learn to live with it.
Old 09-15-11, 06:57 PM
Forum Topic Moderator
Join Date: Sep 2005
Location: USA
Posts: 4,646
Received 19 Votes on 18 Posts
One of the benefits of draining into a laundry tub is that the tub has a long way to fill if the drain doesn't take all the water at once. Most new washers require 2" drains and often will overflow a 1.5" standpipe. Especially if it's an older drain, who knows how clogged it may be.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes
Ask a Question
Question Title:
Your question will be posted in: