The C437D, E Gas Pressure Switches are pressure-actuated switching devices used in industrial gas system applications for safety shutoff, pressure control, and differential-pressure control.

该C437D，电子气体压力开关的压力驱动开关器件在工业气体安全关断，压力控制系统应用中，和压差控制。

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Fixed firefighting systems - Components for gas extinguishing systems - Part 10: requirements and test methods for pressure gauges and pressure switches.

固定消防系统。气体灭火系统元件。第10部分：压力计和压力开关的试验方法和要求。

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As long as all of the low pressure gas and draft switches are satisfied the fuel gas trip system will be unaffected when the 125 VDC power is restored.

应翻译为只要所有 低压 气体和负压开关保持正确位置，当125伏特直流电源恢复后燃料气跳车系统不会被影响。

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