Bathroom Sink Drain Installation

What You'll Need
Pipe wrench
PVC drain pipe kit

A bathroom sink is functional only when the bathroom sink drain is installed properly. There should not be any kind of leaking or dripping of water. Bathroom sink drain installation is an easy process, provided that some simple steps are followed carefully.

Step 1: Assembly

Open the purchased drain pipe kit and confirm that all the parts mentioned on the box are in place and the function, utility and application of each part is understood. Read through the manual for instructions and guidelines and try to follow them stringently. This will ensure there is no scope for errors and incorrect fittings.

Step 2: Setting and Fitting

If you are replacing an existing pipe, detach it from the sink. Measure its length and compare its diameter to the new pipe supplied with the kit. If you are installing a pipe to the new sink, then take the new bathroom drain and check if it fits the height of sink and diameter of the gauge. Now insert it into the small hole at the central bottom of the sink.

Step 3: Fixing the Drain

If you are replacing an existing drain pipe, then remove the nuts, bolts and connectors that join the drain pipe to the sink.  
Once you have found the right place for the drain, fix it with the help of large threaded stopper that comes along with the drain pipe kit. Thread it to the bottom of the drain to ensure that it grips the drain tightly. This threaded stopper will work as a bandage. Remember to use the washer that is a part of the kit. Tighten the bathroom sink drain with the help of a pipe wrench. As a note, it may be necessary to use some special tape around the threads of each fitting to ensure extra water tightness. 

Step 4: Final Installation

You can install the bathroom sink drain pipe by joining several parts provided in the kit. A ‘J’ pipe is a trap that is used to connect to the drain pipe just fixed to the sink drain hole. Constrict the trap with a washer provided and tighten it with the help of a pipe wrench.

Step 5: Taping

It is important to cover the bottom of the newly installed sink drain with a plumber’s tape. Wrap the tape around the joint to ensure fixation. If you have earlier used a threaded stopper, it is still possible to put the tape a couple of times around it. Place the rubber washers on the pipe and stiffen them to avoid leaking. Now, mount a P-Trap Pipe between the sink drain and wall pipe.

Step 6: Fixing Bend

Finally, you need to fix the bend by connecting it to the ‘J’ pipe or the trap installed earlier and the drain outlet in the wall behind the sink.

Step 7: Check Leakage

Once the installation is complete, turn on the tap and let the water run for some time. Check the drain pipe for any leakage. If water drips from any part of the drain, check washers and screw them up tightly, to ensure there is no space for water leakage.