Plumbing Wye Vs Sanitary Tee- A Key Difference

Wye Vs Sanitary Tee

Sanitary Tee and Wye are parts of the drain vent system. They work together to prevent sewer gases from entering your home by providing an airtight seal between two pipes that meet at a T-junction.

This prevents odors from escaping into your home, which can cause health problems for you and your family. Which one of the two is a better choice? 

A Sanitary Tee has a smooth interior wall, making it easy to clean out any debris or dirt that might get stuck inside. This also means it’s less likely to have clogs or leaks over time because of this feature.

If you have an older home with corroded pipes, then a Wye may be better for you because they are made from thicker material than T-shaped components like the Sanitary Tee.

They also tend to last longer without needing replacement due to their durability and strength against corrosion caused by rusting metal pipes.

However, if you have newer plumbing systems in your house, then a T-shaped component like the Sanitary Tee would work best for keeping things flowing smoothly through your drains and vents when water flows through them every day.

We will compare both the drain vent systems to make an informed decision while choosing the one. 

What Is A Sanitary Tee

When to use a sanitary tee. Sanitary tees are typically made from PVC plastic and come in two different styles: a Y-shaped pipe or a T-shaped pipe. They can also be found with multiple openings that allow for better drainage and prevent clogs from occurring over time.

You should always ensure that these products are installed correctly by professionals who know precisely what they’re doing for plumbing work like this! Otherwise, you risk having significant problems down the road that will cost you far more than just installing a single sanitary tee would have done in the first place!

What Is A Wye Tee

Wye is a drain vent system that allows you to connect two drains. This means that instead of having one large pipe, you can have two smaller ones, saving time and money when it comes to cleaning your drains.

The benefits of using Wye are numerous; it reduces the risk of clogging, saves time cleaning out your pipes, and helps with water conservation because there’s less waste going down the drain. You can even use Wye in places where there isn’t enough space for a larger pipe!

Differences Between Vent Tee Vs Sanitary Tee


A sanitary tee is used in plumbing to join two pipes together. It has three openings, one at each end and one on top. The opening on top allows water or wastewater to flow through it.

The other two openings are for connecting pipes that carry water or wastewater away from the mainline. A wye is similar, but instead of having an opening at the bottom, it has a Y-shaped branch with an opening on each side of the Y shape.

This makes it easier for multiple lines to connect into a single line without one tee fitting.

The Purpose Of Each Part:

The purpose of both of these is very much the same. It serves as a drain for wastewater from sinks, toilets, or other drainage systems. Both have a central pipe connected to any number of pipes that lead to sinks, toilets, or whatever drains you want.

These can be combined as well. A sanitary tee and Wye are used when there isn’t enough space for a separate drain pipe. In such cases, just putting in a new sanitary tee would do the job.


Another difference between the sanitary tee and the Wye is their shape. You will see a sanitary tee in the form of an inverted U-shape, whereas a wye looks like a Y-shape.

This is because the sanitary tee has more flexibility than the Wye. It goes through smaller spaces, while the Wye needs ample width and height. Though the sanitary tee is slightly more flexible, it is still less than a conventional sewer line or drain pipe. Because of this reason, its installation is easier.

Installation And Use:

If you install a sanitary tee, then it should stay in place. While installing a wye requires cutting into an existing wall of your house. This makes it harder to install.

Moreover, a sanitary tee comes along with its accessories. It includes a valve for controlling the flow rate, a trap for stopping backflow, and a flange for connecting to various sink types. However, the eyes don’t come with any accessories. They need to be bought separately.


Though the sanitary tee is less expensive than the Wye, it still costs money. Since you are going to put it on your walls, it is going to cost you something. Also, once you install a sanitary tee, you won’t be needing another.

But, what about the Wye? There is no way that you can replace it after just one time. As you know, replacing a part means that you might need to tear down the whole bathroom. That will cost you a lot of money.

The Conclusion 

A sanitary tee is used to connect two pipes of different sizes. It’s also known as a “sanitary cross” because it looks like an X. A wye, on the other hand, has three openings instead of two.

It’s used to split or branch off one pipe into three. So if you’re trying to figure out which type of fitting your plumbing system needs, this article is worth your read. 


Test Tee Vs Cleanout

A test tee is a fitting with a removable plug that allows access to inspect or test the building’s drainage and vent system. A cleanout is a fitting with a removable plug that provides access to clear blockages in the building’s drainage system. While a test tee can be used to clear blockages, a cleanout is specifically designed for that purpose.

Sanitary Tee Or Wye For Cleanout

A sanitary tee is preferred over a wye for use as a cleanout fitting. The straight-through flow of a sanitary tee allows for easier clearing of blockages with a drain snake compared to the angled flow of a wye. Additionally, code requires that cleanouts be installed so the opening faces upward, which is easily achieved with a sanitary tee but not a wye without additional fittings. Overall, a sanitary tee provides superior accessibility for clearing drain clogs.


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