Wafer butterfly valve me worm gear box. Hana ʻia ka ilo me ka ductile iron QT500-7 me ka worm shaft, i hui pū ʻia me ka hana kiʻekiʻe kiʻekiʻe, loaʻa nā hiʻohiʻona o ke kūpaʻa ʻaʻahu a me ka maikaʻi o ka lawe ʻana.
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