China, Ductile Iron, Cast Iron, Plate Dual, Plate Double, Wafer, Flange, Lugged, Check Valve, Production, Factory, Price, RF, RTJ, ewepụtụ 1, mkpụbelata 8, mkpụbelata 5, PTFE, Viton, metal, oche, ihe valves nwere carbon ígwè, igwe anaghị agba nchara, A216 WCB, A351 CF3, CF8, CF3M, CF8M, A352 LCB, LCC, LC2, A995 4A. 5A, A105 (N), F304 (L), F316 (L), F11, F22, F51, F347, F321, F51, Alloy 20, Monel, Inconel, Hastelloy, Aluminom Bronze na ndị ọzọ pụrụ iche alloy. Nrụgide sitere na klaasị 150LB, PN10, PN16, JIS 10K, JIS 5K