... inexpensive 2. Certificate :ISO9001 ,CE 3. We often take Large-scale Fair Pneumatic V-ball valveModel : ZTQ670F (N, P, ... H, Y )Bore: DN25-500mmPressure: 1.6, 2.5, 4.0, 6. ... (spring reposition)Control: Switch , Adjust .Selection of Accessories: solenoid valve, locator, limit switch, F.R..L. Combination unit. Manua ... and DIN3337(F03-F25). pneumatic 3PC welding ball valve