Note: To get an accurate reading when checking ETX/ETSX tank air pressure with any tire gauge, disconnect the tank from the system.

注：在采用任何轮胎气压表察看ETX/ETSX膨胀罐的空气压力时，为了准确读出压力表的压力值，请将膨胀罐与系统的连接断开。

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Pressure water supply equipment using the compressibility of air, water pumps used directly in the water supply system, set up a water pipe network and pumps connected to the pressure tank.

气压供水设备利用空气的可压缩性，在用水泵直接供水的系统中，设置了一个与水泵供水管网相连接的气压罐。

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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.

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。

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