Liquids collecting in the coalescing filter sump are automatically drained into the common drain tank.
凝聚过滤器滤槽中汇集的液体可自动排入共用的排水箱。
This article introduces the principle, design and application of drain tank, explains its three functions: first, prevent gas from overflowing and seal the tank;
前言： 介绍了水封的原理、设计和运用，并对水封的三种作用——防止气体外溢，起密封作用；
Since it has a curve like a drain pipe, water will get caught there and keep bugs from getting into the tank.
由于它和排水管一样有一个弯道，里面就存有一些水把虫子挡在水箱外面。
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