On Sat, 21 Jun 2014 12:58:09 -0500, dpb wrote:

On 6/21/2014 12:21 PM, HerHusband wrote:
...

4. The tee the pipe nipple threads into appears to be installed upside
down. The side inlet should slope downward so water can flow down the drain
properly. Yours looks like it slopes upwards toward the vent. Ideally, that
should be replaced.

5. It's hard to tell from the small photo, but it looks like there's
another piece of tape (duct tape?) wrapped around the pipe below the tee.
Was that another leak?

If it was me, I would replace the existing trap and tee with all new PVC or
ABS pipe. To avoid issues with trying to dismantle old corroded fittings, I
would probably just cut the galvanized pipe with a hacksaw below the tee
and use a Fernco coupling to add the new parts. You may want to support the
pipe above and below the point you're cutting it so it doesn't drop into
the floor if it's not properly anchored.
...

Good catch on the the swept-tee being upside down--I didn't notice it
was anything other than an ordinary tee.

If it were mine, the idea of fixing the T is good; I'd go w/ a reducing
sweep tee if can find one; if not use a bushing to go to standard 1-1/2"
drain and then can go to the run-of-the-mill currently available
selection of drain parts from any corner hardware.

The tee may be a bit of a challenge locally at anything other than a
full-supply plumbing supply house, however; a quick search of the BORG
stock didn't show that they had any sweep tees at all, what more a
3x3x1-1/2 or whatever it actually is (I'm still thinking that isn't 3"
line, too). It really doesn't look like there's anything wrong w/ the
one there itself altho the question of what the tape below is doing
there is a possible worry.

In fact, now that I look at that again, wondering about the question of
dissassembly, there's a bushing in the bottom outlet and it may well be
that it's a reducing tee itself as I can't now convince myself the
bottom D is as large as the inlet and tee sides. It may be 3x2x3; the
top surely is pretty-good-sized.

Looking at the practicality of it, unless there's an issue from the tee
down, I'd just plan on replacing the nipple w/ a reducer as above--the
reversed sweep clearly worked for a long time; I'd probably wait until
there were reasons to redo a bunch before tackling that much unless OP
just wants to do it now...
The scary part is that pipe just MIGHT also be the vent stack - - -
- - -