DC MotorChina API 6D Carbon Steel Top Mounted Eccentric Hemisphere Valve for Sour, Coal Ash, Waste Residue, and Other Medium with Worm, Electric, Pneumatic, Hydraulic Drive, Find details about China Carbon Steel, Ball Valve from API 6D Carbon Steel Top Mounted Eccentric Hemisphere Valve for Sour, Coal Ash, Waste Residue, and Other Medium with Worm, Electric, Pneumatic, Hydraulic Drive