... : DN15-DN200 3,Materials:ceramic 4,Certificates:ISO9001 Ceramic water level control valve Standards: 1,Material: lining ceramic/ body carbon ... Test Standard: ISO5208, API598 (JISB2003), API 6D, BS 67557,Structure Type: Short Pattern,Regular Pattern,Venturi Pattern,Full Bore Pattern8,Operated ... transportation; petrochemical industry;paper industry wastewater treatment Ceramic water level control valve