Thread: Sink drain line configuration

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I'm having a little trouble seeing it as well!

Robert,

Not sure if you are kidding, but there is no pic. Hard to comment on something that we can't see.

Besides a possible back grade issue it looks OK to me.

Which way does it drain to? To the left (behind the trap) or to the right?

What is to the right and what is to the left (behind the trap)?

I 'think' it drains to the left and behind, into the back wall, either way, a wye should be installed instead of a tee.

I see several problems with those fittings, starting with the wall bend coming up out of the 'P' trap ... there is no depth in the fitting it is into for the slip ring to seal well and have much grip on that piece, which could allow it to fall out, or at least leak.

Is that a bathroom with a pop-up drain? Looks too small to be anything other than a lavatory 1-1/4" drain.

Originally Posted by RobertSmith

The sink drains to the right to a hall bathroom sink drain.

What is behind it? Hope it is not a clothes washer.

Originally Posted by RobertSmith

So Scott,

you agree then the drain line configuration is improper, then?

Well now that I can see a picture, Yes it is screwed up. It can be corrected, but it will take a plumber who has some knowledge and ability and not the homeowner.

Originally Posted by James Duffin

Besides a possible back grade issue it looks OK to me.

What is a "Back grade issue"? I have never heard of this.

It's the opposite of forward grade...

Originally Posted by Scott Patterson

What is a "Back grade issue"? I have never heard of this.

Scott,

I think he means it is reverse sloped.

Woah! What the crap?

I'm having a hard time telling exactly what I'm looking at.


What's coming out of the wall behind the trap?

How does it drain into the hall bath's drain?

I'm guessing, and this is based on very limited data, that the trap at one point drained into the back wall. That *appears* to be a trap adapter coming out of it. Also, note the crud ring on the wall arm of the trap where a ferrule used to be. I can't guess to the motivation of moving the drain though.



EDIT: Also, that tee, and the pipe with the short bend coming out of (what should be) the bottom of it, looks like the kind you'd use to join two sink drains together before sending it into a trap. If it is, that tee has baffles in it meant direct water downward and prevent it from going across the tee.