Uponor PEX Fittings

ProPEX Fittings are expansion style fittings. These PEX Fittings are manufactured by Uponor, formerly known as Wirsbo. The fittings are widely used throughout the US and Europe for PEX Tubing connections. Each PEX Fitting connection requires the use of a ProPEX expansion tool and a ProPEX ring. These fittings can be used to make connections in PEX Plumbing systems.