PEX couplings are the fittings that are primarily used to make PEX connections. The most common material that is used to manufacture these fittings is brass. Plastic PEX couplings are also used in order to test the pressure. There are several types of couplings that are widely used for various types of PEX installations.
PEX couplings are available in varied sizes in order to facilitate the connection of PEX tubing of different measurements. The most commonly found sizes of the PEX couplings are I inch, 1/2 inch, 3/4 inch and 3/8 inch. These PEX couplings are increasingly used in several heating and plumbing operations. Crimp connections are used to ensure tightly sealed installations. These connections are made using copper crimp rings and various crimp tools to ensure secure connections.
PEX tubing is extremely durable and flexible which can be installed effectively using lesser connections. The PEX piping is widely available in long coils due to which the need for coupling joints do not arise.