The Summit 3 has given great service in the first 3 weeks. Met every challenge on one flush, remarkably quick quiet and efficient and washed the bowl completely. I don't miss the 7 gallon flush this unit replaces. I don't expect to need a plunger.
Has anyone tried converting a 3" flapper toilet into a "dual" Flush? Works great as is. Can the liquid only flush be throttled back to 1 gallon or less while maintaining only 1.6 gallons for everything else?
I have not been able to manually push the flapper down with enough speed to short fill and clear the bowl I usually wind up draining about the same amount as an ordinary flush. I am skeptical of the dual flush conversion kits, thinking they may yield a 1 gallon flush paired with a greater than 1.6 gallon flush.
The Blue 3" Mansfield flapper appears durable, time will tell.