Air Line Revolution: Is PEX Pipe the Game-Changer You’ve Been Waiting For?

Can you use PEX pipe for air lines? This is a common question among DIY enthusiasts and home improvement professionals alike. PEX (cross-linked polyethylene) pipe has become increasingly popular for plumbing applications due to its flexibility, durability, and corrosion resistance. However, its suitability for air line applications raises certain concerns.

Understanding PEX Pipe

PEX pipe is a type of plastic pipe made from cross-linked polyethylene resin. It is flexible, lightweight, and resistant to corrosion, making it an excellent choice for various plumbing applications, including water supply lines, radiant floor heating, and underground installations.

Compatibility with Air

The primary consideration when using PEX pipe for air lines is compatibility. Air is a non-polar gas, while PEX pipe is a polar material. Polarity refers to the presence of unequal distribution of electrical charges, which can affect the interaction between materials.

Oxygen Permeation

PEX pipe exhibits a certain degree of oxygen permeation, meaning that oxygen molecules can pass through the pipe walls. This can be a concern for air line applications, as excessive oxygen can lead to oxidation and corrosion of metal components within the system. However, PEX pipe manufacturers have developed oxygen barrier layers that significantly reduce oxygen permeation rates, making it suitable for most air line applications.

Pressure Considerations

PEX pipe is typically rated for water pressure up to 100 psi (pounds per square inch). Air lines, on the other hand, operate at lower pressures, typically around 75 psi. Therefore, PEX pipe can withstand the pressures encountered in air line applications.

Temperature Range

The temperature range for PEX pipe is typically between -40°F and 180°F. This range covers the temperatures typically encountered in air line applications, ensuring that the pipe will not become brittle or deform under normal operating conditions.

Installation Considerations

When installing PEX pipe for air lines, it is crucial to follow proper installation guidelines. This includes using the appropriate fittings, such as crimp rings or compression fittings, and ensuring that the pipe is securely fastened to prevent leaks.

Comparison to Other Materials

PEX pipe offers several advantages over traditional materials used for air lines, such as copper or galvanized steel. PEX is more flexible, making it easier to install in tight spaces. It is also corrosion-resistant, which eliminates the need for protective coatings or galvanizing.

Applications

PEX pipe is suitable for various air line applications, including:

• Compressed air systems
• Pneumatic tools
• Air compressors
• Vacuum systems

Conclusion: Enhancing Air Line Functionality with PEX Pipe

PEX pipe has emerged as a viable and effective solution for air line applications. Its compatibility with air, pressure resistance, temperature range, ease of installation, and durability make it an excellent choice for DIY projects and professional installations. By understanding the considerations and following proper installation guidelines, you can confidently use PEX pipe to enhance the functionality and longevity of your air line systems.

FAQs

Q: Can all types of PEX pipe be used for air lines?
A: Yes, all types of PEX pipe, including PEX-A, PEX-B, and PEX-C, can be used for air lines provided they have an oxygen barrier layer.

Q: What are the advantages of using PEX pipe for air lines?
A: PEX pipe offers flexibility, corrosion resistance, pressure resistance, and ease of installation compared to traditional materials like copper or galvanized steel.

Q: What fittings should be used with PEX pipe for air lines?
A: Crimp rings or compression fittings specifically designed for PEX pipe should be used to ensure a secure and leak-proof connection.