... international standards ISO5211 and DIN3337(F03-F25).Pneumatic three-piece ball valveModel : ZTQ61(6,8,2)F (N, P, H, Y ... -100mmPressure: 1.6, 2.5, 4.0, 6.4 Mpa: 150Lb, 300Lb, 600Lb:Dimension standard: GB, ANSI, JISBody material: Carbon steel ... -acting (spring reposition)Control: Switch , Adjust .Selection of Accessories: solenoid valve, locator, limit switch, F.R..L. Combination unit. Manua Device.