工作原理：当管道和水箱内部形成真空时，大气压便会顶开阀盖，大气进入系统内部，平衡系统压力，消除真空影响。
Working principle: when the internal piping and tank vacuum, atmospheric pressure will be the valve cover, air enters the system, balance the system pressure, eliminate the effect of vacuum.
下部特殊管件设计，消除水舌、水塞、水壅等现象，保持立管内空气畅通，有效保证管道内的压力平衡，可大幅度提高系统的排水能力。
Upper and under connection design which avoid water block, keep air smooth in the pipe, sure the pressure balance in the pipe, is good to improve drainage ability.
该系统利用流体自身的能量，自动控制和调节输送管道的流动状态，消除和降低因水击及其他原因引起的压力波动，使其达到新的平衡。
The system utilizes the own energy of transportation flow, automatically control and adjust the flow state in transportation pipeline, eliminates and decreases the pressure waves causing by water ham…
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