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Why you can't design a dual siphon model is a bit beyond me.
Why you can't design a dual siphon model is a bit beyond me.
I mean, you could, but it would probably end up being so complicated that it introduces failure points elsewhere.
They do exist, for example https://www.vivasanitary.co.uk/news/how-a-dual-flush-syphon-works.aspx https://www.vivasanitary.co.uk/news/how-a-dual-flush-syphon-...