PEX fittings – elements of PEX plumbing systems that provide direct or angular connection of separate parts of metal-water and allow the transition between pipes of different diameters. Structurally PEX fittings for metal pipes is a PEX fitting inserted in the pipe and connects with the threaded part of the valves, filters, meters and other PEX plumbing fixtures. The most common types of PEX fittings used in the installation of metal tubes – press PEX fittings, PEX fittings, and compression.
PEX fittings press PEX fittings are mounted in the lumen of metal-press test tube by a metal sleeve, stainless steel, put on the pipe at the junction of pipes and PEX fittings. Tightness of such a connection is provided by O-rings to be placed in concentric grooves on the socket PEX fitting. Press test crimp sleeve press PEX fitting, single operation, if necessary to disassemble the connection, it simply cut off with part of the metal-tube, then put in its place a new press PEX fitting.