How do I best connect my drain lines to make the rubber-pvc and pvc-metal transitions water tight?
I've got a washer and drawer washer combo with a drain line for each. There's no vent pipe to the roof and the drain in the wall is galvanized or something along those lines.
The pvc 'solution' I have at this point is just hand tight, so water can leak a little at the pvc-metal transition and gray drain line to pvc transition. The studor vent has helped tremendously in cutting down sewer smell, but the rest of the fitting probably still leaks some sewer gas.
In case the pics aren't shown, I have two gray, rubber, 3/4" diameter, corrugated washer drain lines pushed into a 3/4" x 1-1/2" slip pvc adaptor. Both of those adaptors are connected to a 3-way T PVC. A studor vent is attached via a vertical stand pipe of maybe 18" to the middle connection on the 3-way T. That 3-way is connected via a 45 degree connector over the metal drain pipe in the wall.
Best Answer
Washer drain lines are not supposed to have an "air and water tight" connection - they are specifically supposed to have an air gap, or loose fit into the top of a standpipe.
The (bottom of the) standpipe should have a trap, which appears to be missing or hidden. Evidently missing, given you report stink. The water in the trap is what seals out sewer gas.