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I have a Aspirambo PORK TOILET with drain pipes of diam. 80. Can I replace it with a 3/6 liter WC (other than Porcher) outlet 100 with a reducer? Are there no risks of traffic jams?

Porcher Aspirambo bowl is specific, its operating principle based on a suction system related to the shape of the tulip part of the bowl. Its output is actually 80 mm in diameter. Usually the recommended diameter for the drain pipe of a toilet is 100 mm, which corresponds to the diameter of the large drainage pipe. You should not need a reducer if you replace this Porcher bowl with a bowl with a 100 mm diameter outlet. Ask the manufacturer about the possibility of mounting on this bowl a double-flush tank.

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