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'[EE] Maybe should be OT, toilet valve question'
2008\03\23@205730 by Jinx

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> 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
element

Do you notice anything like scale in other water appliances ? How
about the neighbours ?



2008\03\24@081413 by Howard Winter

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Jinx,

On Mon, 24 Mar 2008 13:56:37 +1200, Jinx wrote:

{Quote hidden}

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.

Cheers,


Howard Winter
St.Albans, England


2008\03\24@085730 by Jinx

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> 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
with hard

> 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)

2008\03\24@115301 by Bob Blick

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> 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
:)

Cheerful regards,

Bob

--
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