SVR Global is the reputed Forged Steel Check Valve Manufacturer in USA . Description: Body Material- Cast Iron and Cast Steel (LF2, A216, WCB, WCC, LCB, LCC, WC6, WC9), Ductile Iron, Stainless Steel [SS316, SS304, SS316L, SS904L, CF8, CF8M, F304, F316, F31L, F91), duplex and super duplex STEEL [ F51, F53, F55 ] Forged Steel A105, F22, F51, F53, F55, F91, F304, F316) Size- ½” – 80”... https://www.svrglobal.net/products/forged-steel-check-valve/