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Cast Iron/Wcb Carbon Steel Butterfly Valve, Manual/Worm Gear/Electric/Pneumatic, Wafer/Lug/Flange, ANSI/DIN/JIS/API, Heavy Duty Industrial Valve, Find Details and Price about Butterfly Valve Wafer Butterfly Valve from Cast Iron/Wcb Carbon Steel Butterfly Valve, Manual/Worm Gear/Electric/Pneumatic, Wafer/Lug/Flange, ANSI/DIN/JIS/API, Heavy Duty Industrial Valve - Carter (Hangzhou) Valve Manufacturing Co., Ltd.