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I pretty much understand how a toilet works but I'm not sure how the anti-siphon thing works or why it's there. Help
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toilet
the anti siphoning thing is there to break the siphoning action of the reverse trap that's molded into the porcelain toilet base. the way a toilet works is that the water level in the bowl rises to the point above a neutral level to allow the system to drain and create a water "trap" to contain the sewer gases in the lower portion of the toilet and soil pipe. you could feasibly have a straight through fitting from the bowl to the soil pipe, but there wouldn't be any means of trapping the gases , so the bathroom would always smell. you don't want that!
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