Breaking news: game-changing pex pipe revolutionizes plumbing (cts or ips)

PEX (cross-linked polyethylene) pipe has gained immense popularity in plumbing applications due to its flexibility, durability, and corrosion resistance. However, one common question that arises is whether PEX pipe follows the Copper Tube Size (CTS) or Iron Pipe Size (IPS) standard. This blog post aims to provide a comprehensive understanding of the CTS and IPS standards and their implications for PEX pipe.

Understanding Copper Tube Size (CTS)

CTS is a standard used to measure the outside diameter (OD) of copper tubing. It is commonly used for plumbing applications involving copper pipes. The CTS system is based on nominal sizes, which are approximate outside diameters in inches. For example, a 1/2-inch CTS copper tube has an OD of 0.5 inches.

Understanding Iron Pipe Size (IPS)

IPS is a standard used to measure the inside diameter (ID) of iron pipes. It is commonly used for plumbing applications involving iron or steel pipes. The IPS system is also based on nominal sizes, but these sizes represent the approximate inside diameters in inches. For example, a 1/2-inch IPS iron pipe has an ID of 0.5 inches.

PEX Pipe and the CTS/IPS Dilemma

PEX pipe can be manufactured to meet either CTS or IPS standards. However, it is important to note that PEX pipe is not interchangeable between the two standards. CTS PEX pipe has an outside diameter that matches the nominal size, while IPS PEX pipe has an inside diameter that matches the nominal size.

Consequences of Mismatching CTS and IPS

Using CTS PEX pipe with IPS fittings or vice versa can lead to leaks and other plumbing issues. This is because the outside diameter of CTS PEX pipe is smaller than the inside diameter of IPS fittings, resulting in a loose connection. Similarly, using IPS PEX pipe with CTS fittings can lead to a tight connection that may restrict water flow or damage the pipe.

Identification and Compatibility

To avoid any confusion, it is crucial to identify the type of PEX pipe being used before selecting fittings. CTS PEX pipe is typically marked with the designation “CTS” or “Copper Tube Size,” while IPS PEX pipe is marked with the designation “IPS” or “Iron Pipe Size.” Additionally, the fittings should be compatible with the type of PEX pipe being used.

Advantages and Applications of CTS and IPS PEX Pipe

CTS PEX Pipe:

• Ideal for use with copper fittings
• Provides a tighter seal
• More common in residential applications

IPS PEX Pipe:

• Ideal for use with iron or steel fittings
• Provides a looser connection
• More common in commercial applications

Final Note: Making an Informed Decision

Understanding the difference between CTS and IPS PEX pipe is essential for ensuring a proper and leak-free plumbing system. By carefully matching the pipe type with the appropriate fittings, plumbers and homeowners can avoid potential issues and ensure the longevity of their plumbing system.

Frequently Asked Questions

Q: Can I use CTS PEX pipe with IPS fittings?
A: No, using CTS PEX pipe with IPS fittings can lead to leaks due to the size mismatch.

Q: How can I identify the type of PEX pipe I have?
A: CTS PEX pipe is marked with “CTS” or “Copper Tube Size,” while IPS PEX pipe is marked with “IPS” or “Iron Pipe Size.”

Q: What type of PEX pipe is best for residential applications?
A: CTS PEX pipe is more commonly used in residential applications due to its tighter seal with copper fittings.

Q: Can I use IPS PEX pipe for both hot and cold water lines?
A: Yes, IPS PEX pipe is suitable for both hot and cold water lines.

Q: Is PEX pipe more expensive than copper pipe?
A: PEX pipe is generally more affordable than copper pipe, making it a cost-effective plumbing solution.