Series name:ZS/DSR Pneumatic O-Shape Ball Valve(Trunnion mounted) Nominal pressure rating:PN1.0,1.6,2.5,4.0,6.4MPa,ANSI150,300Nominal Diameter:DN20~600mmWorking temperature:Stainless steel metal seat:-20~160,-20~230,-20~425,PTFE soft seat:-20~150Flow characteristic:Quick openingPneumatic actuator:ZS series double acting single piston actuator ZD series single acting single piston actuatorAir-supply pressure:0.5~0.7MPaSeat type:Spring loaded metal seat,PTFE soft seatMaterial:Body: (1)WCB (2)CF8 (3)CF8M (4)CF3M Ball: (1)CF8 (2)CF8M (3)CF3MOptional accessories:(1)Positioner:A.imported B.Made in China(2)Solenoid valve,Signal feedback device(3)Connecting flange,bolt:A.Carbon steel B.Stainless steel