バルブの選定
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空気駆動バルブで、配管が時に真空状態、時に常圧状態であり、媒体が粉状固体の場合、真空バタフライバルブと球弁、どちらが良いのでしょうか。それとも半球バルブが良いのでしょうか
切断用のみならば、ボールバルブを選ぶ
口径の大きさによりますが、一般的にはボールバルブを使えば問題なく、詰まる心配もありません
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