On Nov 8, 10:55�am, Jules
wrote:
On Sat, 07 Nov 2009 21:38:02 -0500, tnom wrote:
There is some debate about whether or not the feature is
effective at reducing sediment.

Yes, �it works. Just checked mine after 10 years.
No sediment came out of the drain.

That sounds like mine (not self-cleaning). Sediment was there, but no
sediment came out of the drain because the drain valve's water pathway
is too small and angular to allow the sediment to come out. :-)

(it seemed to be about 1/4" x 1/4" in places - so all it takes is for a
flake of scale larger than that to fall to the bottom of the tank, and
nothing will escape the drain valve except water - giving the impression
that there's no sediment in there)

some areas get no sediment, till the lining fails..........