調節閥新品種進一步產生，出現隔膜閥、角型閥、蝶閥、球閥等。50年代：球閥得到較大的推廣使用，三通閥代替兩臺單座閥投入系統。60年代：在國內對上述產品進行了系列化的改進設計和標準化、規范化后，國內才才有了完整系列產品
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