Reducing sanitary tee

[Bartleby]

I am going to be running a drain for a new washer. I will be connecting to the drain where the elbow is on this 3” pipe. The drain is going to be directly above it. Trying to figure out the ideal connection. Is it best to do a 3” sanitary tee and reduce up to 2”? Or is there a special fitting to use? If I do a sanitary tee, any reason to do long sweep?

 

[Breplum]

Tee may not be used in horizontal position, period.
Any fitting with a sweep like a wye or combo (aka wye and 1/8th bend) is the proper fitting. No need to go larger than the required 2" branch for a residential laundry.

 

[Sponsor]

 

[wwhitney]

I am going to be running a drain for a new washer. I will be connecting to the drain where the elbow is on this 3” pipe. The drain is going to be directly above it. Trying to figure out the ideal connection. Is it best to do a 3” sanitary tee and reduce up to 2”?

That would be fine. Or you can use a 3x3x2 low heel inlet quarter bend, which is really a 3x2x3 san-tee under another name.

Or you can just use a 3" combo with a 3x2 bushing in the straight inlet to make a 3x2x3 combo. Depending on how you cut into the existing piping, and whether that elbow is a quarter bend or LT90, that may or may not be easier.

Cheers, Wayne

 

[Bartleby]

That would be fine. Or you can use a 3x3x2 low heel inlet quarter bend, which is really a 3x2x3 san-tee under another name.

Or you can just use a 3" combo with a 3x2 bushing in the straight inlet to make a 3x2x3 combo. Depending on how you cut into the existing piping, and whether that elbow is a quarter bend or LT90, that may or may not be easier.

Cheers, Wayne

Thanks. I bought the low heel fitting before I posted the message, but didn’t know if that was a no no to use in this situation. Glad it’s not since that should be the easiest.

 

[Reach4]

You can use a santee to introduce drainage in horizontally to join a vertical drain. Or you could use a combo, but the santee is more compact.

The orientation of you picture is not that obvious. I was thinking the black pipe at the bottom is vertical, and the pipes at the upper left are horizontal. I think you are looking to extend the vertical upward to contribute more drainage to the path down.

 

[Bartleby]

You can use a santee to introduce drainage in horizontally to join a vertical drain. Or you could use a combo, but the santee is more compact.

The orientation of you picture is not that obvious. I was thinking the black pipe at the bottom is vertical, and the pipes at the upper left are horizontal. I think you are looking to extend the vertical upward to contribute more drainage to the path down.

Yes, exactly right. Moving the vertical drain up to the 2nd level.