Double sinks in the kitchen are convenient, although they require extra pipe when hooking up the plumbing. If one of the sink drains is in line with the wall pipe, you have an offset sink. Offset sink drain kits are available at home improvement centers in varying lengths. Hooking up the drains on an offset sink is similar to hooking up a single-drain sink. The connection that secures to the sink drain above the P-trap has a hole for the drain pipe of the opposite sink drain basket.
Instructions
1. Measure the distance between the top of the sink P-trap to the bottom of the sink basket directly above with a tape measure. Measure the distance between the two sink drain baskets, from center to center. Your the size of your offset drain kit should be longer than the measurements you take.
2. Wrap plumber' tape around the threads of the sink drain baskets. Loosen the nut securing the P-trap to the pipe coming from the wall. This allows movement of the P-trap. Place the T connection under the drain basket, with the bottom of the T connection beside top of the P-trap.
3. Mark a line on the bottom of the T connection 2 inches past the top of the P-trap. Cut the bottom of the T connector at your mark with a hacksaw. If you have a metal P-trap, wrap the threads with plumber's tape.
4. Slide the slip nuts over each end of the T connection, with the threads of the nuts pointing away from the ends. Insert the bottom of the T connection into the top of the P-trap. Position the top of the T connection under the sink basket, with the open hole on the side of the connection pointing to the opposite drain. Thread the securing slip nuts over the sink basket and the P-trap. Do not tighten them at this time.
5. Place the J connection pipe under the offset sink basket with the longer end pointing toward the T connection. Mark the end of the J connection 2 inches past the side of the hole in the T connection.
6. Cut the end of the J connection with a hacksaw. Slide the slip nuts over each end of the connection pipe. Insert the connection pipe into the hole on the T connection and under the offset basket. Thread the slip nuts over the sink basket and T connection.
7. Tighten all of the securing nuts until they are hand tight. Turn each nut an additional half turn with a pair of slip joint pliers.
Tips Warnings
Purchase an offset sink drain kit at a home improvement center. The kits come in several sizes, and in metal or PVC. The kit includes a T connection and a longer pipe that resembles a J.
Some people choose to use elbows and straight pipe to manufacture their own drain kits. The pre-packaged drain kits remove a lot of guesswork.
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