Forged steel, gate valves, manufacturer, factory, price, Pressure sealed bonnet, API 602, Solid Wedge, BW, SW, NPT, Flange, reduce bore, full bore, materials have A105(N), F304(L), F316(L), F11, F22, F51, F347, F321, F51, Alloy 20, Monel, Inconel, Hastelloy, Aluminum Bronze and other special alloy. Pressure from Class 150LB to 800LB to 2500LB, china.