#1 PEX Plumbing Mistake You Don't Want to Make (A vs B)

Summary

In this informative video, Chris from the Silver Symbol Channel explains the crucial differences between PEX A and PEX B plumbing systems. While both types are widely used, PEX A offers greater flexibility and superior water flow due to its expansion connection method, making it ideal for most installations. In contrast, PEX B, commonly found in retail stores, utilizes crimp fittings that can restrict flow. Chris provides tips for identifying each type and emphasizes the importance of using compatible connectors for repairs, ensuring effective plumbing solutions. This guide is essential for anyone working with PEX plumbing.

Takeaways

• 😀 PEX plumbing has two main types: PEX A and PEX B, which differ in functionality.
• 🛠️ PEX A offers better flexibility and can be reshaped if kinked, making it ideal for installations.
• 💧 PEX A allows 20-30% more water flow compared to PEX B, enhancing overall plumbing efficiency.
• 📦 Most stores primarily stock PEX B, which uses different connection methods and fittings.
• 🔧 PEX A requires a special expansion tool for connections, while PEX B uses crimp rings that can restrict flow.
• 🔍 To identify your plumbing type, check for markings and connection points under sinks and appliances.
• 📏 PEX A fittings expand the pipe, maintaining a full flow rate, while PEX B fittings fit inside the pipe, reducing diameter.
• ⚙️ Connecting PEX A and PEX B is possible, but it requires using the correct fittings rated for both systems.
• 🔒 Both PEX A and B are reliable options, but PEX A is often preferred by professionals for its advantages.
• 🏡 Homeowners should be aware of their plumbing system to avoid issues during repairs or renovations.

Q & A

What are the two main types of PEX plumbing discussed in the video?

The two main types of PEX plumbing discussed are PEX A and PEX B.

Why is it important to know the difference between PEX A and PEX B?

It is important because using the wrong type of connectors or fittings can cause significant issues, such as leaks or system failures.

What is a key advantage of using PEX A over PEX B?

PEX A is more flexible and allows for better water flow, typically 20-30% more than PEX B.

What tools are required for working with PEX A?

PEX A requires a special expansion tool to make connections, while PEX B typically does not.

How can homeowners identify which type of PEX plumbing they have?

Homeowners can identify their PEX type by looking at the lettering on the side of the pipe or examining the connection points for expansion rings (for PEX A) or crimp rings (for PEX B).

What are the fitting differences between PEX A and PEX B?

PEX A fittings expand the pipe to fit the connector, maintaining the full diameter, while PEX B fittings slide inside the pipe, which can restrict flow.

Are both types of PEX plumbing considered reliable?

Yes, both PEX A and PEX B are reliable plumbing systems, but PEX A is often preferred by professionals for its flexibility and better flow rates.

What is a potential downside of using PEX A?

A downside of PEX A is that it requires a special tool for making connections, which may not be ideal for DIYers.

Can PEX A and PEX B be mixed in a plumbing system?

Yes, PEX A and PEX B can be mixed, but it is essential to use fittings rated for both systems.

What impact does the age of the plumbing system have on identifying the type of PEX used?

If a house is over 25 years old, the plumbing may simply be labeled as 'PEX' or 'Pro PEX,' which does not clearly indicate whether it is A or B.