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1 1/4 Inch 3000psi ASTM A105 SAE Forged Dbb (double block and bleed) Valve, Find Details and Price about Ball Valve Dbb Ball Valve from 1 1/4 Inch 3000psi ASTM A105 SAE Forged Dbb (double block and bleed) Valve - Suzhou Cowinns Industry Equipment Co., Ltd.