这种情况和事故可能会对生活用水产生虹吸作用，将每种可能的连接用户系统的液体抽回到公用水供应系统中。
Such activities and occurrences can siphon domestic water systems, drawing every conceivable fluid connected to the user's system back into the public water supply.
通过阀体及虹吸内管的虹吸作用控制阀门的开启及关闭，从而实现水箱的水位控制。
The opening and the closing of the valve are controlled by the siphon action of the valve bodies and the siphon inner pipe, and therefore, the water level control of the water tank is realized.
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