burkert 00501208 型号6014宝德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： 它是一种直动和先导式wister47.win相结合的原理，当入口与出口没有压差时，通电后，电磁力直接把先导小阀和主阀关闭件依次向上提起，阀门打开。当入口与出口达到启动压差时，通电后，电磁力先导小阀，主阀下腔压力上升，上腔压力下降，从而利用压差把主阀向上推开；断电时，先导阀利用弹簧力或介质压力推动关闭件，向下移动，使阀门关闭。 特点： 在零压差或真空、高压时亦能可*动作，但功率较大，要求必须水平安装。

burkert 00501208 型号6014宝德

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