How To Connect Two Faucet Supply Lines Together? – Plumbing Solution

Jessica Wiest
Last updated: January 1, 2024

By learning certain things, we can get rid of our hassle in life. For example, learning how to connect two faucet supply lines together will help you save money and save your time calling a plumber.

There are several DIY methods of connecting two faucet supply lines together. Sometimes, they may go wrong. But, sometimes, the methods will bring you your desired result. That’s why applying the correct method is always necessary.

Here we are going to discuss the possible methods of how to connect two faucet lines together. You need to go through the whole to get the correct method.
Let’s dive in!

What You will Know show

How to connect two faucet supply lines together? Explained-

Cost

To connect two faucet supply lines doesn’t cost much. You need to buy the materials only. You can also buy the tool as you may need it for other works as well. So, it will not be a waste of money. It may cost around 10$ to 20$.

You just need to buy a faucet, a ring, a faucet locking nut, a compression nut, and a tube.

The faucet cost may vary from 100$ to 400$. Choose the one you like. Others will cause less than 20$ combined. So, it will cost around 150$, and it is the least amount.

Time Needed

If you want to connect two faucet supply lines by yourself, it might take 15 to 30 minutes. Depending on how many times you have used it.

If it’s your 1st time, it will take a little bit longer. But you are going to call a plumber; it will take less than 15 minutes.

Connecting two faucet supply lines is easy and can be done within a few minutes if you properly follow the steps. After trying several times, if you are unable to do it, call a plumber.

Tools

While connecting two faucet supply lines, you do not need many tools. It depends on your hand strength.

The only tool you need is Basin Wrench. You need this to tighten the nuts. Otherwise, ordinary people can’t tighten the nuts in a proper way.

Materials

The things you need to connect two faucet supply lines include the following.

Faucet and faucet locking nut.
A tube.
A ring
A compression nut.

The size of the tube may vary according to the distance from the supply line to the faucet. You need to fit the tube properly to the faucet and valve at a proper angle.

Connecting two faucet supply lines together - Steps

You are most likely to succeed if you follow the steps below –

Step 1

The first step is always to turn off the water supply. If the water flows, you will be unable to connect the faucet because of the water pressure.
The water pressure makes it tough and also gets you wet. Also, it will cause excessive loss of water. And we should not do it.

Step 2

Afterwards, the steps depend on the faucet supply lines. There are varieties of supply lines found on the marketplace. For all supply lines, you have to measure the distance from the faucet to the valve.
More specifically, from the valve’s discharge part to the faucet’s intake part. Depending on the distance, you need to get the tube.

Step 3

In this step, you have to cut the tubing. It depends on the supply line. Try to add a little bit more to the measurement and cut the tube.
The amount of addition depends on the path of the supply line. So, cut it with extra parts. This extra part will not slow down the water pressure. So, you do not have to worry about that.

Step 4

It doesn’t matter if you are using copper supply lines or plastic supply lines. Bend your tubing according to the distance.
Bending is necessary here. Make bends carefully and do not bend them fully. Try not to bend both the end parts of the tube as these parts will be connected to the faucet and valve.
Bend the tube properly so that both the ends of the tube angle perfectly with the intake part of the faucet and the valve.
Bending perfectly depends on the type of the tube. Choose a bendable tube so that you can angle it properly.

Step 5

Next, on the end of the supply line, place the faucet’s locking nut, the compression nut, and the ring. Keep the supply line in the proper place as you have yet to connect it with the tube.

Step 6

Finally, place the faucet in one of the ends of the tube. Place it properly and tighten the nut. Place the other end to the valve’s discharge part.
Place it carefully and tighten the nut with the basin wrench. Some faucets come with certain supply lines.
Sometimes other faucets may not work on that supply line. So, keep them.

Step 7

You can tighten the nuts with a basin wrench. For this, place one wrench on the valve and the other on the compression nut.
Hold the valve in place and turn the compression nut. Make sure to turn it clockwise. You may need to use tape as well.
Finally, you are done connecting two faucet supply lines. But, before that, you have to check it. Sometimes, it might cause you trouble as well. That’s why ensure by checking.

Final remarks

Right connection of the faucet is necessary as you may need to use it continuously. If it’s damaged or broken easily, it will cost a fortune. That’s why a proper way should be followed while connecting two faucet supply lines together.

If you find it difficult, you can also call a plumber. But doing this work yourself is better as people will give you some credit for it. You can also save time and money.

After connecting the faucet, you should also check if it’s working or not. Sometimes it does not work. That’s why checking is the safest way. You may need to redo it.