Where can I tie in washing machine?


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Old 08-05-17, 03:21 PM
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Question Where can I tie in washing machine?

I am trying to move my washer into the utility room this weekend. I realize I have to have a separate trap and vent for each drain. Would the proper way to do this be to tie in at the point in the picture and then Tee off that into the vent pipe above?
 
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Old 08-06-17, 08:24 AM
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Anyone? I really would like to get this done this weekend and I am not really sure what needs to be done to make this code compliant.
 
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Old 08-06-17, 08:42 AM
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Plumbers are still at church. Just be patient.
 
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Old 08-06-17, 08:52 AM
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lol good point. Grabs coffee and patiently waits.
 
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Old 08-06-17, 11:26 AM
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You need to remove existing Y and add a combo fitting.

You cant stack Y's like you show.

A combo fitting is different from a double sanitary tee, so make sure you get the right one.

Double fixture fitting



Sanitary tee

 
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Old 08-06-17, 02:55 PM
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Thanks lawrosa! So if I swap out the existing y with a Double fixture fitting then it will already be vented so no need to tie in the vent anywhere else correct?

PS
Just so you know what is what. The pipe coming into the why currently is a kitchen sink pipe if that matters.
 
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Old 08-06-17, 06:25 PM
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Also, how do I tell the difference between a Double fixture fitting and a Sanitary Tee??? Home depot calls them "Double Fixture Sanitary Tee"!

http://www.homedepot.com/p/2-in-x-1-...2112/100678016
 
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Old 08-06-17, 09:05 PM
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Look at the differences in the posted Mike posted. There is more of a gradual sweep to the two side connections on a combo tee. Also your link is to ABS. You need PVC. If still not sure take the photo of a combo tee to a plumbing supply company.

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Last edited by ray2047; 08-06-17 at 09:52 PM.
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Old 08-06-17, 10:31 PM
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Ah, I see what you are saying Ray. Thanks

Still not sure if I need to tie in a vent somewhere else or if the Double fixture fitting takes care of that issue.
 
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Old 08-06-17, 11:43 PM
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Does that line go through the roof? If so that is your vent.

Notes: The washer standpipe is two inches and needs a P-trap.
Kitchen sink is 1". Simplest to just buy a 2"x2'x2" combo fixture and reducer bushing for the kitchen sink line. They probably make a 1x2x2 but it might be harder to find.
 
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Old 08-07-17, 10:43 AM
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Whether or not you need an additional vent depends upon how far the trap is from the existing vent. There are rules for "developed length of trap arm" and they differ based upon the size of that trap arm, the horizontal piping from the trap outlet to the combination fitting or sanitary tee.

VERY generally speaking, if the trap arm is more than four feet then a re-vent IS necessary. Some jurisdictions will allow the use of an "air admittance valve" (AAV) and others absolutely will not allow them. An AAV must be installed above the "flood plane" of the fixture or as high as possible to prevent flooding in case of a clogged drain and AAV failure. They also must be installed in a permanently accessible area because they DO require maintenance and sometimes replacement.
 
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Old 08-07-17, 11:20 AM
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Just to add:

Yes on the 2x2x2x2.

The probably do not make a 2x2x1 1/2 because the whole thing about the combo fitting is the weir. And 1 1/2 on one side would change that.

The real difference is that , the height of the left and right inlets are higher, in relation to the center vent stub.

And from your pic, yes no need to vent. The existing is the vent.

I believe with 2" you can go about 8 ft without reventing.. ( Not 100% positive on that)
 
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Old 08-07-17, 11:48 AM
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I believe with 2" you can go about 8 ft without reventing.. ( Not 100% positive on that)
When I changed my shower for a whirlpool tub I went to the library to research the code. As I recall it was 6 feet and I just barely made it in my installation.
 
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Old 08-07-17, 12:02 PM
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Just looked it up


12.8.1 in the code, max length of trap arm to vent.

2" = 8 ft
1 1/2 = 5ft
 
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Old 08-07-17, 02:21 PM
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Thanks, Mike. After I wrote that I had to think for a minute. It is a six-foot tub so I had to move the drain connection farther from the vent which goes up the wall on the opposite side of the tub from the drain. That makes it about 7-1/2 feet. I knew it was just on the hairy edge and your research confirms that.
 
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Old 08-07-17, 06:33 PM
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Ok got it! Yes, that pipe that the sink drains into does vent to the roof.

I have not run the pipe for the the washer drain yet so I will be sure that it is no more than 8ft. Went to home depot today and they did not have any Double fixture fitting. Looks like I may have to order it online.
 
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Old 08-07-17, 06:55 PM
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Try a hardware store or a plumbing supply.
 
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Old 08-07-17, 07:05 PM
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I'll see if the local place my buddy suggested for the in wall valve and discharge box for the washer has those as well.
 
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Old 08-07-17, 08:19 PM
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Let us know when you complete the project . And post pics. We all love a happy ending..
 
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Old 08-14-17, 04:58 PM
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Is this the right fitting? They called it a double wye


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Old 08-14-17, 07:11 PM
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Ughh, looking at the pictures I think they gave me the wrong thing. Why is this so complicated..The plumbing supply place should know what the right fitting for the job is
 
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Old 08-17-17, 07:41 PM
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Just chiming in on the max trap arm lengths.
3" pipe is 6'
2" is 5'
1 1/2 is 42"
These are the lengths in my iapmo international code book and what is enforced in my state. If you can't find the fitting mentioned above there is another piping option that is a little more work but not difficult
 
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Old 08-22-17, 08:50 AM
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Ok so I brought the other one back. I am just going to order it online as I went to 3 local plumbing supply places and they all wanted to sell me the sanitary T wye fitting.

Is this the one that I need https://www.amazon.com/gp/product/B0...KIKX0DER&psc=1 or is there a better place to buy them?


Also, I just called the local plumbing inspector and he stated max distance between trap and vent line for 2" is 6 feet and 1 1/2" is 5 feet :/
 

Last edited by rufunky; 08-22-17 at 10:16 AM.
 

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