how to service gear butterfly valve?

Hi दोस्तो is video से app gear gate valve kaise service करते है ये valve app किसी v line me manually operated करने के लिए उसे करते haiButterfly valve repair
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[@BabalukumarSingh-vx4ml]

Ok

[@babalukumarsingh4445]

O k

[@TechnicalRN143]

Sir yap avi kaha pe hai

[@wasimtechnical8904]

Kuwait