... structuralStructure Ceramic Ball Valves is very excellent with low-cost, hi-economy, long life (2~4 times of Titanium Valves), extra ... Ceramics Ball Valves can be taken the strong impact of hi-speed liquid and hard grain,with excellent performance on wear and ... , valve seat and the inner lining are all made of hi-performance Structure Ceramics. It is examined by Metal Research Institute ...