... ).Pneumatic three-piece ball valveModel : ZTQ61(6,8,2)F (N, P, H, Y )Bore: DN10-100mmPressure: 1.6, 2.5, 4.0 ... ), Stainless steel(CF8, CF8M, CF3, CF3M)Seat material: PTFE, PPL, N, H, YMode of action: double-acting, single-acting (spring reposition ... : Switch , Adjust .Selection of Accessories: solenoid valve, locator, limit switch, F.R..L. Combination unit. Manua Device.