... 4.Can do special design 5.MOQ 1pcs ProductCast iron ball valveSize15~200mmMaterialCast ironStandardISO,ANSI,ASTM,API,DINApplicationWater,air,non-corrosive ... Advantages:1. Small fluid resistance,the whole diameter of the ball basically has no flow resistance.2. Simple structure,small ... of sealing surface when medium pass.7. Wide application,the range of nominal diameter is froma few millimeters to a few ...