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BS En 1984 150lbs 300lbs 600lbs 900lbs12 Inch Gate Valve 24 Inch Gate Valve Refinery Manual Operated Gate Valve, Find Details and Price about Ball Valve 3 4 Ball Valve from BS En 1984 150lbs 300lbs 600lbs 900lbs12 Inch Gate Valve 24 Inch Gate Valve Refinery Manual Operated Gate Valve - Zhongqiu Valve Co., Ltd