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バルブの問題で相談です

2016-08-12View Original

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新しく建設中の球形タンクがもうすぐ完成し、壁付きバルブの取り付けが必要です。缶の下面は凸面で、凸凹面同士を接続する場合は凹面バルブを使用し、接続後のバルブ下面のフランジも凹面のままです。一方が凹面フランジでもう一方が凸面フランジのバルブはありますか???
Reply #22016-08-12
凹面のドアバルブの下部フランジに凸面のフランジを組み合わせるのは問題ない。なぜ一方が凹んで一方が凸なバルブが必要なのか?

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