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。
The air-valve was compared with one-way tank, both of which are used for avoiding liquid column separation in the pipe.
计算结果表明，在局部凸起点附近加装单向调压塔更能较好地避免液柱分离的发生。
The air tank includes the body, safety valve, blow-off valve, pressure meter and manhole, etc.
储气罐包括本体，安全阀，排污阀，压力表，人孔等。
The air tank includes the body, safety valve, blow-off valve, pressure meter and manhole, etc.
储气罐包括本体，安全阀，排污阀，压力表，人孔等。
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