Regarding the issue of break-siphoning in overflow pipes

2019-05-13View Original

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A netizen asked about the vent pipe on the overflow pipeline; strictly speaking, it is a matter of the design of the anti-siphon device. There are three different types of overflow pipes shown in the diagram. The first type (with the outlet at the liquid level) can be omitted, while the other two types have their outlets below the liquid level; in both cases, a check vent must be installed, as otherwise siphoning may occur, resulting in the liquid in the upper tank being emptied. In fact, the latter two piping methods are commonly encountered in actual production, for example when the liquid is a oil-water two-phase mixture and stable drainage is required... I hope to discuss this with netizens.

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Regarding the issue of break-siphoning in overflow pipes

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