... 3,Materials:ceramic 4,Certificates:ISO9001 Ceramic water level control valve Standards: 1,Material: lining ceramic/ body carbon steel + ... BS 67557,Structure Type: Short Pattern,Regular Pattern,Venturi Pattern,Full Bore Pattern8,Operated way: Handwheel, Gear, Pneumatic, Electric ... Actuator.Advantages:1, The parts contacting with the media are made of ...