How To Install Drain Pipe For Double Sink Vanity

Installing a drain pipe for a double sink vanity is not as difficult as it may seem. With a few simple tools and the right parts, you can easily install your own drain pipe. Here are the steps to take to install a drain pipe for a double sink vanity:

1. First, you will need to gather the necessary tools and parts. You will need a pipe cutter, a hacksaw, a drill, a screwdriver, and pliers. You will also need a double sink drain kit, which can be purchased at most hardware stores.

2. Next, you will need to cut the drain pipe to the correct length. Measure the distance from the center of the drain hole to the outside edge of the vanity, and then add a few inches to allow for connection to the P-trap. Cut the pipe with the pipe cutter.

3. Next, you will need to drill holes in the drain pipe. Drill a hole in the center of the pipe, and then two more holes about an inch from each end. 4. Now, you will need to connect the drain pipe to the P-trap.

Slip the P-trap onto the drain pipe, and then tighten the connection with the screwdriver. 5. Finally, you will need to connect the drain pipe to the vanity. Slip the drain pipe over the drain hole in the vanity, and then tighten the connection with the pliers.

That’s it! You have now successfully installed a drain pipe for a double sink vanity.

  • Choose the location for the drain pipe
  • Cut a hole in the vanity for the drain pipe
  • Install the drain pipe
  • Connect the drain pipe to the sink
  • Test the drainage system
how to install drain pipe for double sink vanity


Table of Contents

How do you plumb a double vanity sink?

Installing a double vanity sink is a great way to add style and function to your bathroom. But before you can start using your new sink, you need to connect the plumbing. This can be a daunting task for many homeowners, but with a little patience and some basic plumbing knowledge, you can easily plumb a double vanity sink.

The first step is to turn off the water supply to your bathroom. This will prevent any accidental flooding while you’re working. Next, you need to remove the old sink and disconnect the plumbing.

If you’re not sure how to do this, you can always call a professional plumber for help. Now it’s time to install the new sink. Start by attaching the supply lines to the hot and cold water valves.

Then, connect the drain lines to the drain assembly. Once everything is connected, you can turn on the water supply and test your new sink. If everything is working correctly, you’re ready to start using your new double vanity sink!

Do you need two drains for a double vanity?

No, you don’t need two drains for a double vanity. One drain is sufficient.

Does a double vanity need 2 P traps?

If you’re considering installing a double vanity in your bathroom, you may be wondering if you need two P traps. The answer is usually yes, although there are a few exceptions. P traps are required by most building codes in order to prevent sewer gases from entering the home.

They are typically installed under sinks, and they work by trapping water in a small bowl-shaped area. This water forms a seal that keeps sewer gases from passing through. There are a few cases where you might not need two P traps for a double vanity.

If the vanity is located far away from any potential source of sewer gases, or if it has an airtight seal, you might be able to get away with just one P trap. However, it’s always best to err on the side of caution and install two P traps.

How do you install a double sink drain pipe?

Installing a double sink drain pipe is a simple process that anyone can do with a little bit of knowledge and the right tools. The first step is to remove the old drain pipe. This can be done by unscrewing it from the sink or disconnecting it from the drain.

Next, measure the distance between the two sink drains and cut a piece of PVC pipe to fit. Once the new pipe is cut, glue it into place with PVC cement. Finally, screw the new drain pipe into place and check for leaks.

Install Double Bowl Sink Vanity w/ Only One Wall Water Pipe Connection & Drain Pipe Using PVC

Double vanity sink drain plumbing diagram

If you’re planning on installing a double vanity sink in your bathroom, you’ll need to know how to properly plumb the drain. This can be a bit more tricky than a single sink, but with a little know-how and the right diagram, it’s definitely doable. The first thing you’ll need to do is measure the distance between the two sinks.

This will determine how long your drain pipe needs to be. Next, you’ll need to cut two holes in the vanity for the drain pipes. Make sure these holes are slightly bigger than the pipes themselves so that you can get a good seal.

Once the holes are cut, you can start attaching the drain pipes. For a double sink, you’ll need to use a Y-shaped connector. Simply fit the two pipes into the connector and then seal it with plumber’s putty.

Now it’s time to attach the P-trap. This is the curved pipe that connects to the drain and prevents sewer gases from coming back up through the drain. First, fit the P-trap onto the drain pipe coming from the wall.

Then, fit the other end of the P-trap onto the drain pipe coming from the sink. Again, seal all connections with plumber’s putty. The last step is to attach the drain stopper.

This fits onto the drain pipe coming from the sink and allows you to control the water flow. Simply screw it into place and you’re all done! Now that you know how to plumb a double vanity sink, you can get started on your bathroom renovation.

Just be sure to follow these instructions carefully and you’ll end up with a beautiful and functional sink.


If you’re installing a double sink vanity, you’ll need to install a drain pipe to connect the two sinks. Here’s a step-by-step guide to installing a drain pipe for a double sink vanity: 1. Start by running a length of drain pipe from the trap arm of one sink to the trap arm of the other sink.

2. Next, connect the two drain pipes together using a drain tee. 3. Finally, connect the drain pipe to the waste line using a drain fitting.

About Author:

Danyal is a Freelance Copywriter that has been writing for online publications including Home improvement, newsworthy blogs and even a few personal blogs. He has a passion for writing and loves to share his knowledge with everyone who wants quality information.

Leave a Comment