吸气气流流动方向与阀座方向基本一致，气阀流量系数高，流动损失小；
The aspiration air flowing direction is basically same with the direction of the valve seat. The flow coefficient of the air valve is high, and the flow loss is low.
双平衡阀座设计，比一般的疏水阀体积小而排量大，在特大排量场合更能发挥优越性。
To employ double balanced valve seat design, it has smaller volume and larger displacement and can exert its advantages when needing large displacement.
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