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What is the Guaranteed Best to Use: Sanitary Tee Vs Wye

What is the Guaranteed Best to Use: Sanitary Tee Vs Wye

The incorrect sanitary fitting in your drainage system can clog the drain completely or cause unwanted turbulence. People frequently mix up hygienic tee and wye because of how similar they are.

We brought Sanitary Tee Vs. Wye for this reason. We will go through each of these sanitary fittings in depth and highlight how they differ.

The next time you work on a plumbing project, you can maintain the drain water flowing in the right direction by placing the appropriate fitting at the appropriate location.

Let’s begin with the hygienic tee.

What is Sanitary Tee?

The name is a result of the shape. It is a sanitary fitting in the shape of a T, with three open ends. A horizontal drain is connected to a vertical drain via sanitary tees. Their extended side has a downward sweep because of this.

Liquid can readily flow through the tee and into the vertical drain thanks to the center section’s curved shape. In addition, there is always some space for air to move, which keeps the liquid flow laminar.

Sanitary tees can be manufactured of ductile iron, stainless steel, carbon steel, cover, or any number of other materials. In several docking types, you can find straight or reducing tees.

A common fitting with four openings is a double sanitary tee or sanitary cross.

When to Use a Sanitary Tee?

To maintain the drainage system operating, be aware of when to use a sanitary tee fitting and when to use the other.

A sanitary tee must be used when joining a horizontal line to a vertical line. But never take the opposite action. The drain can easily become blocked if a sanitary tee is used to join a vertical line to a horizontal line.

Vent tees can also be made from sanitary tees. The space for airflow will guarantee normal liquid flow.

Sanitary tees ought always only ever be used vertically. The waste falling from the top will splash through the opening if you use a sanitary tee with a side intake open horizontally.

What is Sanitary Wye?

A hygienic wye is a particular fitting that looks like a lowercase Y. It features three 45-degree apertures. With this little bend, wyes are utilized in the opposite circumstances of tees.

They are used to link vertical and horizontal lines. Wyes are also used to join two lines in the horizontal direction. This enables a continuous flow of liquid through the tubes with no obstruction.

Wyes, like sanitary tees, can be manufactured of stainless steel, carbon steel, copper, PVC, or ductile iron.

When to Use Sanitary Wye?

In the following situations, you should apply sanitary wyes.

A wye should be used to connect numerous horizontal lines to a single one. This will lessen the possibility of clogging.

Wye is often used to divide a line into different branches. A wye can be used to produce two lines that go in opposite directions.

With wyes, vertical lines can be joined to horizontal lines.

plumbing and sanitary fixtures
Source: Pexel

Sanitary Tee Vs. Wye: What’s the Actual Difference?

Although both are sanitary fittings, there are some distinctions between plumbing wye and sanitary tee. Let’s categorize them based on essential factors.


Sanitary tees are T-shaped, whereas wyes are Y-shaped. A tee’s extended branch forms a right angle to the mainline. In a wye, however, the expanded line forms an acute angle with the mainline.

The connection’s center is bent in the tee. This causes the liquid to flow horizontally. Wyes, on the other hand, have a straight center of connection.


The material of these two fittings differs in no discernible way. They could be made of the same material. In fact, it is best to use the same material for all pipes and fittings when plumbing. This guarantees that everything attaches properly and that there are no mismatches around the joints.


Both of these fittings have three holes. The direction of the holes differs due to their diverse forms. As a result, you should think about the best fit for your needs.


The fundamental distinction between these fittings is in their use. These two fittings are not interchangeable. That means you can’t use a sanitary tee in place of a wye or vice versa.

To join horizontal and vertical lines, sanitary tees are employed. Wyes, on the other hand, are used to connect vertical and horizontal lines. Wyes can also be used to join or split horizontal lines.

Wyes can also be used as a substitute for vent tees. However, a sanitary tee should only be utilized in one situation. Using a tee in the incorrect location may cause water blockages and clog the entire drainage system.

Which One is for Me?

Because you can’t use these fittings in place of each other, there’s no way to choose between wye and sanitary tee. Both are essential to make an ideal plumbing system.

The most important thing is to utilize the correct fitting at the correct location. When connecting a horizontal line to a vertical line, use sanitary tees. In opposite circumstances, the other fitting is required.

Though they appear to be quite similar, you must exercise caution when utilizing these fittings in a drainage system. Understanding the overall aim of these two fittings will help you choose the best one in any particular situation.

Final Thoughts

The preceding discussion of Sanitary Tee vs. Wye makes this quite evident. These fittings are made for many uses. Despite the fact that they are used in the same drainage system, they have separate applications.

Using one over the other will cause havoc in the drainage system. To keep the waste liquid flowing properly, these fittings should be handled with caution.

Understand the differences between these fittings and when to utilize them to make your plumbing operations easier than before.

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