"Mike" wrote in message
...

"Ian Middleton" wrote in message
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Can water softener waste (probably containing calcium/magnesioum chloride
and may be some salt) be passed through copper pipe OK ?

Would it attack the copper ? I very much doubt it but worth asking.


Almost everything attacks copper pipe until it forms a protective shield
of
the various oxides and other Cu salts inside. Providing nothing is done
to remove these at intervals the pipe should be okay.

But why not just use plastic ?

A colleague at work, after hearing about the wonders of my water softener
decide he would like one too. The optimum place for it would be in a
cupboard near the rising main and other pipework in his utility room. The
waste drain would by via a nicely polished peice of 35mm copper pipe running
under a large victorian sink. Doesn't want to change the copper pipe as its
a feature, but worried that something might eat it away ???