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Siphon cisterns don't have this problem, because there's no valve - or rather, there is a valve in the form of a flap of plastic, but it's to lift the initial b
by barrkel 6y ago
Siphon cisterns don't have this problem, because there's no valve - or rather, there is a valve in the form of a flap of plastic, but it's to lift the initial bit of water over the siphon and not block the rest when it follows.
- Gibbon1 6y agoWhy you can't design a dual siphon model is a bit beyond me.