... 2,DN:DN50-DN800 3,Size:2"~14"stop valve 4,ISO certificate Ceramic stop valveFeatures: 1,Good mechanical stability in high temperature ... of the second material. 3,Compared with the metal valve, the valve obtains the stable sealing property at home and abroad, ... WCB111YokeWCB15Stem2Cr13112YokeCoppar Alloy16Back teatPIFE113Hand-wheelHT25017Pocking514Hand-wheel nut startQ235-A1 Ceramic stop valve