... . Certificate :ISO9001 ,CE 3. We often take Large-scale exhibition Pneumatic flange floating ball valveModel : ZTQ641F (N, P, H, Y )Bore ... (spring reposition)Control: Switch type, Adjust type.Selection of Accessories: solenoid valve, locator, limit switch, F.R..L. Combination unit. Manua Device.Pneumatic actuator 1 ...