... 30% in total output by ball valve and gate valve respectively.Metal seated ball valve, below sealed valve and water check valve are the featured products.Pressure ... , water type, etc.Materials(casting): WCB, WCC, LCB, LCC, LC1~3, CF8, CF3, CF8M, CF3M, CF8C, CN7M, CA15, C5,WC5, WC6 ...