Experts say it is not a problem. It has not been a problem in my
house. I had to remove a Kohler pressure assisted toilet when we
first moved into my house and I could not believe how clean the pipe
was. (There was nothing wrong with the toilet but it wasn't installed
My understanding is that it isn't a problem. Our plumber said that if
you could see inside the waste pipes, you would see piles of debris
every so many feet. Each flush moves the pile along to the septic
system or sewer system.
Sorry about Toyo vs. Toto, but regardless, our investigation indicates
the Totos are better than Kohler. And to balance reports, one of our
Kohlers - a very expensive model has needed to have the flapper valve
replaced every two years - the others are ok.
By the way the early Kohler PA toitets did not use Sloan valves and
actually were known to blow up from the pressure. Kohler never did a
recall despite complaints. The valve company disappeared.
The Wellworth are available in pressure asissted and gravity. Make
sure you get the one you want. The tank is the only difference as of
the last time I looked. That and the price. The Sloan valve version
is probably $200.
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