Pex (or crosslinked polyethylene) is part of a water supply piping system that has several advantages over metal pipe (copper, iron, lead) or rigid plastic pipe (pvc, cpvc, abs) systems. It is flexible, resistant to scale and chlorine, doesn't corrode or develop pinholes, is faster to install than metal or rigid plastic, and has fewer connections and fittings Specifications: Nickel plated brass (cw617n) Size: 20mm pex x 1/2" female Max. Temperatures (at 6 bar): +95oc Max. Pressure (at 60 deg C): 1,0 mpa (10 bar) Gaskets: "o" - nbr type Underlay: ptfe