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.
通过工程改造，提出用高位水箱供水系统改造气压供水系统的供水方案，工程费用低，节能效果显著，为气压供水技术改造提供了一条途径。
The water supply plan is raised with water tower take the place of pneumatic water supply system, on the basis a engineering transformation, have to low cost, and remarkable saving energy.
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