... models of valves which covered in the types of globe valves, gate valves, butterfly valve, check valves, diaphragm valves, ball valves, and instrument valves can be ... biger size (for special requirement). The material of the valves can be casting steel of WCB, WC1, C5, WC6 ... , K500 etc.. The valves can be used for power plant, nuclear power plant, oil fields, chemical industrial plant, steel mill, ...