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媒体蒸気、圧力0.8MPAa、空気操作式調節バタフライバルブ、エアロックバルブは85%まで閉じても動かない

2016-10-11View Original

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皆さんに質問があります。配管内の媒体は蒸気で、圧力は0.8MPAaです。バルブは空気駆動式のダイヤフラムバルブで、エアロック式ですが、なぜバルブを85%まで閉じても動かなくなるのでしょうか?誰か説明していただけますか?
Reply #22016-10-11
作動機構の推力が不十分であり、作動機構の推力はバルブが閉じた時の最大圧力差を基準にして検証すべきである。

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