Ceramic water level control valve 1,Size:2"-13"control valve 2,DN: DN15-DN200 3,Materials:ceramic ... 4,Certificates:ISO9001 Ceramic water level control valve Standards: 1,Material: lining ceramic/ body carbon steel ... (JISB2003), API 6D, BS 67557,Structure Type: Short Pattern,Regular Pattern,Venturi Pattern,Full Bore Pattern8,Operated way: Handwheel, Gear, Pneumatic, Electric ...