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'[EE] Maybe should be OT, toilet valve question'
> Her water is not very hard
Sean, I recently cleaned our cistern valve again. This needs doing
every few years. The problem is always brown manganese build-
up. I take the whole thing apart and scrub with a nail brush the
flapper, needle valve, seat, everything, and it works good as new.
Our water pressure is good, and I can't say I've noticed any kind
of failure due to that
When I was in the UK "hard" meant not a lot of chalk in the water.
Being on the south coast our water was definitely very soft and
lime scale was very common after just a short time. For example
we'd have a pebble in the kettle to seed the scale and keep it off the
Do you notice anything like scale in other water appliances ? How
about the neighbours ?
On Mon, 24 Mar 2008 13:56:37 +1200, Jinx wrote:
Hang on, you seem to have this upside-down - "hard" means there *is* a lot of calcium in the water: http://en.wikipedia.org/wiki/Hard_water
Where I am it's about 22 degrees Clark (Hard to Very Hard) and it causes a lot of scale. Where I used to work (about 20 miles upstream) the water was so hard
that you could stand a mouse on it - and we had to descale the office kettle every day.
I have a water softener, but since one of its valves started leaking it's been out of commission (must get round to fixing it!) and as a result the immersion heater in
the hot tank is seriously furred-up (must get round to fixing it!).
I seem to remember that when I visited NZ the water was generally softer than here - at least in Dunedin.
To get back on-topic, scale accumulates in the filter on the toilet cistern inlet valve - it's a "silent" pressure-balanced valve which has a small hole in the
diaphragm to balance the pressure, and this clogs very easily, so the filter is vital. I stopped using brass "Yorkshire" valves years ago, mainly because they are
noisy and need the washer replacing every so often - now I use these people's: http://www.fluidmaster.com - model 400 for bottom fill, 748 for side fill. I'd
recommend the OP changes to one of these if he decides to replace the existing valve.
> Hang on, you seem to have this upside-down - "hard" means
> there *is* a lot of calcium in the water:
Fishtoo Moriarty, you're right. I always thought it was the other
way around. I suppose I associated chalk with soft and granite
> I seem to remember that when I visited NZ the water was
> generally softer than here - at least in Dunedin
It would be in Auckland, mostly volcanic, plenty of manganese
and iron - via iron sand and other ejecta ISTR, a long time since
I did water quality at uni, not a lot of chalky soil in NZ generally.
There's sandstone down south (actually Dunedin way)
> noisy and need the washer replacing every so often - now I use these
> people's: http://www.fluidmaster.com - model 400 for bottom fill, 748
> for side fill.
Right, I said Flowmaster, but I meant Fluidmaster. But I suppose you
could put a high performance exhaust on a toilet - just to hear it roar
http://www.fastmail.fm - Or how I learned to stop worrying and
love email again
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