... Certificate :ISO9001 ,CE 3. We often take Large-scale Fair Pneumatic V-ball valveModel : ZTQ670F (N, P, H, Y ) ... , CF8M, CF3, CF3M)Seat material: PTFE, PPL, N, H, YMode of action: double-acting, single-acting (spring reposition)Control: Switch , ... Adjust .Selection of Accessories: solenoid valve, locator, limit switch, F.R..L. Combination unit. Manua Device.Pneumatic ...