... Well Valve Co., Ltd is a private enterprise specialized in producing and exporting various kinds of low pressure cast iron valves (gray iron, ductile iron) ... W)copper seal swing check valve, BS5163 copper seal gate valve, BS5152 copper seal globe valve and cast iron Y Strainer.Our company has ... , African countries, China Hong Kong, Taiwan and so on. Gray Cast Iron Metallic seated Gate Valve DIN3352 F4