grodenhiATgmailDOTcom wrote:

I have a toilet (Kohler) that has a float instead of the ball on the
stick (I know.... I have no idea the real terms). The problem is the
float seems to have an issue rising as the water rises. In other
words, the float starts to rise once it gets about 1/4 submerged, but
then stops rising and gets about 3/4 submerged, then shoots back up to
about 1/4 submerged and so on. This causes the water to shut off
instantly on one of the quick shoot ups (causing water hammer). I have
drained the tank and the float seems to travel up and down without any
sticking points. Do the floats wear out? If so, can I simply buy a
new float, or do I need to get a new water setup (again, no idea the
real term).



You may not get away from that "water hammer" thing that easily. Some of
those systems have a toggling action which causes the water to shut off
quickly when the float finally rises high.

Play with the float by moving it by hand with the water to the toilet
turned on and see if lifting it gently to the shutoff level gives you a
quiet shutoff without that water hammer. If it does, then your analysis
is correct, and a new fill valve assembly may fix things. (I like
"Fluidmasters", and they cost less that $10 at box stores.)

You could also try just partially opening the supply valve to that
toilet to see if there's less of a water hammer when the incoming flow
is a little slower.

HTH,

Jeff

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"Truth exists; only falsehood has to be invented."