... -ring and nut,3)Raw material:brass for different type:DZR,CW617,CZ132,Normal Brass and so on4)Elevated reliability,simple ... is much more resistant to freeze-breakage than copper or riqid plastic pipe.PEX plumbing installations cost less becausePEX is ... coupler, Tee, Female Tee, Male Tee, Elbow, Female Elbow, Male Elbow, Wall plated elbow, Cross Compression fitting for pe(x)-al-pe(x) composite pipe