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Pex compression fittings are a type of plumbing fitting that are used to connect two pieces of Pex tubing together. Pex tubing is a type of plastic tubing that is commonly used in plumbing systems for its flexibility, durability, and resistance to corrosion and freezing.
Compression fittings work by compressing a ring (called an O-ring or a ferrule) against the tubing, creating a tight seal that prevents water from leaking out. This is done by tightening a nut onto the compression fitting, which compresses the ring around the tubing.
Pex compression fittings are typically used in applications where a permanent connection is desired, such as in residential plumbing systems for hot and cold water supply lines, as well as in radiant heating systems. They are relatively easy to install, and require no special tools or equipment.
