kitchen-sinkpipeplumbingpvc
How do I connect the PVC J pipe to the drain pipe in the kitchen sink?
The drain pipe has a large flange on it. Because of the size of the flange, when using a flanged "top hat" washer, the nut can't get close enough to the threads on the PVC pipe. The previous owner just packed putty around the connection.
I would call it a slip x spigot brass drain street ell. Can't say I've seen one until now. More common is the double slip brass drain ell. Hard to say from a photo, but looks like a short horizontal straight piece could be inserted if you had to use a double slip ell. Perhaps the trap U could be rotated away a bit to buy a little extra distance for this.
To avoid cross-threading, spin it backwards until you feel it drop into another thread; this is where and when it's lined up. First attach it to the sink and then fight with other connection, leaving everything lose until it's all fitted together. For the fitting you have, turn this picture up-side down: (make sure the grommet is properly orientated)
The bottom of the drain spout always seals to the drain plumbing using one of these clever conical, or wedge type of gaskets. The nut on top pushes the wedge into the drain pipe, which compresses it and cause it to perfectly seal between the drain plumbing and the spout from the sink. -woodgears.ca
Plumbing is always a can of worms; you'll find new fittings much easier to work with, and the reusing of old grommets to be less than ideal. While you're at it, replace it with a sanitary elbow like it should be. Flexible lines should be avoided if at all possible, but they sure make for an easy install.
Best Answer
There are two practical ways to deal with this. Before getting into details let me say that you should stop trying to join the trap parts of metal pipe to the trap parts of plastic pipe.
Method 1. Remove the metal pipe with the J bend and complete the P trap with plastic parts. Then join the plastic pipe to the down flow drain system where the pipes are straight and concentric with each other. There are slip type couplings to join the plastic to the metal in this way.
Method 2. Take out the plastic P trap parts and then re-build the connection from the metal J bend up to the drain of the sink using compatible metal parts. Note that metal parts are much more expensive and harder to work with so take that into consideration when selecting which method to use.
Do be aware that it may not be appropriate to be using a J bend pipe as part of the drain trap. Standing water in a trap should be confined primarily in the trap part itself and single tapered swivel joint of the trap joint. You should avoid having a situation that the standing water in the drain line rises up past other slip joints in the pipe system. Too much standing water column can also lead to a suction effect that can end up leaving the trap with not enough water in it after a heavy volume draining.