What Is The Difference Between PEX And PERT Pipe?
Jan 06, 2024
What is the difference between PEX and PERT pipe?
When it comes to modern plumbing systems, PEX and PERT pipes have become two of the most common types of pipes used. Both pipes are flexible and easy to install, but they have some key differences that affect their applications, durability, and overall cost.
What is PEX Pipe?
PEX, known as cross-linked polyethylene, is a type of plastic tubing that is commonly used for hot and cold water plumbing systems. PEX tubing is flexible with a smooth and continuous interior surface, making it easy to install and work with.
PEX is available in various sizes, with the most common being 1/2 inch, 3/4 inch, and 1 inch. PEX piping is color-coded, with red tubing typically used for hot water and blue tubing for cold water.
PEX tubing can be joined through various connections, including crimp, clamp, push-fit, and compression fittings, making it convenient for use in a wide range of applications. PEX tubing is highly durable and can last for up to 50 years.
What is PERT Pipe?
PERT, known as polyethylene raised temperature, is another type of plastic tubing that is used for plumbing systems. PERT tubing is also flexible with a smooth interior surface, but it has a higher resistance to heat.
PERT tubing comes in a variety of sizes, including 1/2 inch, 3/4 inch, and 1 inch, and is color-coded, with red tubing used for hot water and blue tubing used for cold water.
PERT tubing can be joined through butt-fusion, electrofusion, or compression fittings, making it versatile in plumbing applications. PERT tubing is also highly durable and can last for up to 50 years.
What are the Differences Between PEX and PERT Pipe?
While PEX and PERT pipes have several similarities, there are some key differences that set them apart:
1. Temperature Resistance:
One of the key differences between PEX and PERT pipes is their temperature resistance. While PEX can withstand temperatures up to 200°F (93°C), PERT has a higher resistance to heat and can withstand temperatures up to 180°F (82°C).
This makes PEX more suitable for applications where high temperatures are involved, such as in heating systems. On the other hand, PERT is more suitable for applications where temperatures are not too high, such as in cold water plumbing systems.
2. Pressure Ratings:
Another significant difference between PEX and PERT pipes is their pressure ratings. PEX pipes have a higher pressure rating compared to PERT pipes.
PEX piping can handle up to 80 psi at 200°F (93°C), while PERT piping can handle up to 45 psi at 180°F (82°C). This makes PEX more suitable for high-pressure applications, such as in hot water heating systems.
3. Cost:
PEX and PERT pipes also differ in terms of their cost. PEX tubing is generally more expensive than PERT tubing.
The difference in cost is due to the manufacturing process used to produce these pipes. PEX tubing is produced using a cross-linking process, which involves treating the polymer with chemicals or radiation to form a stronger molecular bond. PERT, on the other hand, is produced using a single-layer extrusion process, which is simpler and less expensive.
4. Ease of Installation:
Both PEX and PERT pipes are easy to install, but PEX tubing has an advantage when it comes to ease of installation.
PEX piping is highly flexible, making it easy to maneuver around tight spaces and corners. It can also be bent without the need for fittings. PERT tubing is less flexible and requires more fittings to navigate around tight spaces or turns.
Conclusion
PEX and PERT pipes are two types of plastic tubing commonly used in plumbing systems. While they have several similarities such as flexibility and ease of installation, they differ in terms of temperature resistance, pressure ratings, cost, and ease of installation.
PEX piping is more suitable for hot water systems and high-pressure applications, while PERT tubing is more suitable for cold water systems and applications with lower temperatures. The choice between these two pipes ultimately depends on the specific needs of the plumbing system and the budget.
