... new international standards ISO5211 and DIN3337(F03-F25).Pneumatic three-piece ball valveModel : ZTQ61(6,8,2)F (N, ... 300Lb, 600Lb:Dimension standard: GB, ANSI, JISBody material: Carbon steel(WCB), Stainless steel(CF8, CF8M, CF3, CF3M)Seat material: PTFE, PPL, ... spring reposition)Control: Switch , Adjust .Selection of Accessories: solenoid valve, locator, limit switch, F.R..L. Combination unit. Manua ...