Dave Plowman (News) wrote:
In article ,
John Rumm wrote:
If I had a ferrous system ... I would fit the Magnackean .. impressed
when I saw the demo unit at local BSS

I would have thought a cyclonic filter would be better since it can trap
all the particulates, not just the ferrous ones...

(obviously better to prevent it corroding in the first place if you can!)

Indeed. Why spend all that time and money when chems can stop the problem
in the first place?

The pragmatic answer is probably twofold; one when you inherit a system
where preventative care was not taken, and secondly there may be some
contaminants that will be unaffected by inhibitor etc and missed with
the initial flushing during installation.

(having said that, I put a strainer on the return when I did my last
boiler - in the following two years it collected one small particle of
grit in total, and that was on old pipework and rads of indeterminate
age/condition)

--
Cheers,

John.

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