The underground advantage: pex pipe for long-lasting infrastructure
What To Know
- Therefore, it is important to bury PEX pipe underground at an appropriate depth to protect it from UV damage.
- Bury PEX pipe at a depth of at least 12 inches to protect it from UV damage.
- Ultimately, the decision of whether or not to use PEX pipe for underground plumbing depends on the specific requirements of your project.
PEX (cross-linked polyethylene) pipe has emerged as a popular choice for plumbing applications due to its durability, flexibility, and corrosion resistance. However, one common question that arises is: “Is PEX pipe good for underground?” This blog post will delve into the pros and cons of using PEX pipe for underground installations, helping you make an informed decision for your project.
Advantages of PEX Pipe for Underground Use
1. Flexibility and Durability
PEX pipe is incredibly flexible, making it easy to navigate around obstacles and corners during underground installations. Its high durability allows it to withstand the stresses and strains of shifting soil and ground movement.
2. Corrosion Resistance
Unlike metal pipes, PEX pipe is highly resistant to corrosion. It does not rust or scale, ensuring the longevity of your underground plumbing system.
3. Leak Resistance
PEX pipe has a unique molecular structure that makes it highly resistant to leaks. The cross-linked polyethylene material forms a tight seal, minimizing the risk of water seepage.
4. Freeze Resistance
PEX pipe has the ability to expand when frozen, preventing it from bursting. This makes it suitable for areas with extreme cold temperatures, where freezing can damage traditional plumbing materials.
Disadvantages of PEX Pipe for Underground Use
1. UV Exposure
PEX pipe is not UV-resistant and can degrade when exposed to direct sunlight. Therefore, it is important to bury PEX pipe underground at an appropriate depth to protect it from UV damage.
2. Installation Requirements
PEX pipe typically requires specialized fittings and tools for installation. This can add to the cost and complexity of underground installations.
3. Pressure Limitations
While PEX pipe is generally rated for water pressure up to 100 psi, it may not be suitable for high-pressure applications underground.
When to Use PEX Pipe Underground
PEX pipe is an excellent choice for underground plumbing in the following situations:
- Residential water supply lines
- Irrigation systems
- Drains and sewer lines
- Cold water lines in areas with extreme cold temperatures
When to Avoid PEX Pipe Underground
PEX pipe may not be suitable for underground plumbing in the following situations:
- High-pressure applications
- Direct exposure to sunlight
- Installations requiring extensive fittings and connections
Installation Considerations for Underground PEX Pipe
- Bury PEX pipe at a depth of at least 12 inches to protect it from UV damage.
- Use appropriate fittings and tools specifically designed for PEX pipe.
- Test the system before burying it to ensure proper installation and leak-free operation.
- Consider using a protective sleeve or conduit to provide additional protection for the pipe.
Alternatives to PEX Pipe for Underground Use
If PEX pipe is not suitable for your underground plumbing project, consider the following alternatives:
- PVC (Polyvinyl Chloride) Pipe: Rigid and durable, suitable for high-pressure applications.
- HDPE (High-Density Polyethylene) Pipe: Similar to PEX pipe in terms of flexibility and corrosion resistance, but not freeze-resistant.
- Cast Iron Pipe: Heavy-duty and long-lasting, but prone to corrosion and more difficult to install.
Summary: Making the Right Choice
Ultimately, the decision of whether or not to use PEX pipe for underground plumbing depends on the specific requirements of your project. By carefully considering the advantages, disadvantages, and installation considerations discussed in this blog post, you can make an informed decision that will ensure the longevity and reliability of your underground plumbing system.
Common Questions and Answers
Q1. Is PEX pipe safe for drinking water?
A1. Yes, PEX pipe is certified by the NSF (National Sanitation Foundation) for use with potable water.
Q2. How long does PEX pipe last underground?
A2. With proper installation and protection, PEX pipe can last for 50 years or more underground.
Q3. Is PEX pipe expensive?
A3. PEX pipe is generally more expensive than traditional metal pipes, but its durability and ease of installation can offset the initial cost in the long run.
