进口疏水阀或称进口疏水器是用于蒸汽管网及设备中，能自动排出凝结水、空气及其它不凝结气体，并阻水蒸汽泄漏的阀门。

Import import trap or trap is known for the steam pipe network and devices, can automatically discharge condensate, air and other non-condensing gas, and blocking water vapor leak valve.

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倒吊桶式蒸汽疏水阀的开启和关闭是根据凝结水和蒸汽的密度差来动作的，其动作准确，可靠。

Inverted bucket steam trap opening and closing action is based on the difference in density of the condensate and steam to its accurate and reliable.

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疏水阀处于关闭状态，直到蒸汽足够冷却到凝结为凝结水。这时膜盒重新回缩并让水流进回路管道。

The trap remains closed until the steam cools and condenses into water. The bellows retracts to allow the water into the return piping.

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