Geberit offers 7 4-inch flush valve toilets models in the lineup we track. This page is the Geberit-specific cut of the broader 4-inch Flush Valve Toilets (Champion 4 et al.) toilets category — same product class, narrowed to the Geberit catalog only.
Geberit (Jona, Switzerland, founded 1874) makes the concealed in-wall carriers that 90% of US wall-hung toilet installations sit on — the Duofix and Sigma series — and is independently the largest European supplier of toilet flush plates and dual-flush actuators. Geberit also produces the AquaClean Mera and AquaClean Sela washlet-style smart toilets sold directly in the US, with whirl-spray wash technology and auto self-cleaning.
For the complete Geberit lineup across all sub-types and capacities, see the Geberit Toilets hub.
If you're cross-shopping 4-inch flush valve toilets beyond Geberit, the following brands also ship in this category:
A 4-inch flush valve is the largest flush valve sold in US residential toilets. The standard residential flush valve is 2-inch or 3-inch; 4-inch is the rare premium specification, found primarily on the American Standard Champion 4 line. The larger valve moves water from the tank to the bowl at much higher velocity than a 2"-3" valve, which means stronger flush performance at the same GPF.
Flush velocity = (tank water volume × valve diameter) / time. A bigger valve = more velocity per gallon of water. For a 1.28 GPF toilet:
The 4-inch valve dumps the entire 1....
For the complete 4-inch flush valve buyer's guide (all brands, full comparison framework), see the 4-inch Flush Valve Toilets (Champion 4 et al.) category hub.
Explore Geberit from other angles: