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1. DIN42560 Square Transformer Radiator Butterfly Valve DN80, Metal Hard Seal, Carbon Steel Body, NBR/VI Seal, Lockable Handle, Find Details and Price about Butterfly Valve Plate Vacuum Butterfly Valve from 1. DIN42560 Square Transformer Radiator Butterfly Valve DN80, Metal Hard Seal, Carbon Steel Body, NBR/VI Seal, Lockable Handle - Hebei Chijiang Import and Export Co., Ltd.