burkert 00501208 型號6014寶德Principle: it is a direct acting and pilot operated wister47. Win the principle of combining, when the inlet and outlet no pressure difference, after electrify, electromagnetic force directly to the pilot valve and main valve closed, in turn, lift, the valve opens. When the inlet and outlet reach the starting pressure difference, when the power is energized, the electromagnetism first pilot small valve, the pressure of the lower cavity of the main valve increases, the upper chamber pressure drops, so that the main valve is pushed up by the pressure difference; When the power is off, the pilot valve USES the spring force or medium pressure to push the closure, moving down and closing the valve. Features: in zero pressure difference or vacuum, high pressure can also be the action, but the power is larger, the requirement must be installed horizontally.原理： 它是一種直動和先導式wister47.win相結合的原理，當入口與出口沒有壓差時，通電后，電磁力直接把先導小閥和主閥關閉件依次向上提起，閥門打開。當入口與出口達到啟動壓差時，通電后，電磁力先導小閥，主閥下腔壓力上升，上腔壓力下降，從而利用壓差把主閥向上推開；斷電時，先導閥利用彈簧力或介質壓力推動關閉件，向下移動，使閥門關閉。 特點： 在零壓差或真空、高壓時亦能可*動作，但功率較大，要求必須水平安裝。

burkert 00501208 型號6014寶德

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