worm gear trunnion ball valve,flanged ends,made of cast steels. Design & manufacture standard: API6D, API608, ANSI/ASME B16.34,MSS-SP-72 ... .Butt-welding end dimensions: ANSI/ASME B16.25.Inspection & test standard: API598, API6D.Pressure: 150Lb, 300Lb, 600Lb, 900Lb or PN10~ ... 316), CF3(304L), CF3M(316L), etc.Driving styles: manual/ worm gear/electric/pneumatic,etc.Fire-resistant & anti-static design.