PEX (cross-linked polyethylene) is a type of plastic tubing used in plumbing and heating applications. There are two primary types of PEX piping: PEX-Al-PEX and PEX.
PEX-Al-PEX, also known as aluminum PEX, is a multilayer pipe made up of three layers. The outer and inner layers are made of PEX, while the middle layer is made of aluminum. This design makes PEX-Al-PEX pipes more rigid and durable than traditional PEX pipes. They are also more resistant to temperature changes and are suitable for both hot and cold water applications. PEX-Al-PEX is often used in radiant floor heating systems, where the aluminum layer provides additional strength and durability to the pipes.
PEX pipes, on the other hand, are made of a single layer of PEX material. They are more flexible and easier to install than PEX-Al-PEX pipes, making them a popular choice for plumbing applications. PEX pipes are available in a range of sizes and are suitable for both hot and cold water applications.
Overall, both PEX-Al-PEX and PEX pipes have their advantages and are suitable for different applications. PEX-Al-PEX is more rigid and durable, making it suitable for radiant floor heating systems, while PEX pipes are more flexible and easier to install, making them a popular choice for plumbing applications. The choice between PEX-Al-PEX and PEX will depend on the specific requirements of your plumbing or heating system.