(PEX AL PEX SYSTEM BRASS COMPRESSION FITTINGS. Fittings Size: 16mm - 16mm - 16mm. Material:Nickel Plated brass (CW617N). Temperature (at 6 bar): +95. o C ): 1,0 MPa (10 bar). We don't accept any claims for and loss or expenses occured during instalation or fitting process.