Worcester system filter - why not DIY?

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Great idea. Every home should have one.

Now, what readily available parts are there to make this "few bar-rated plastic box with a magnet in it"?

Reply to
Andy Dingley
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I thought about making one but in the end fitted a commercial unit for about £80 bought new on ebay. By the time you have a stainless steel housing for the magnets, a mechanical filter for the lumps, isolation valves for cleaning and drain and bleed screws and stringing it all together, a bought in unit looks a good deal. I fitted it at the same time as a new boiler with microscopic water ways compared to my old CI lump. All the rads were taken into the garden and hosed out and yet the "boiler mag" filter still collected loads of crap in the first few weeks and only takes minutes to clean and re-fit.

Brilliant bit of kit. Yes every home should have one!

Reply to
Bob Minchin

Only £72 notes here

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Reply to
Bob Minchin

I quite like the Fernox TF1 - has cyclonic separation, as well as magnetic. You don't need to take it apart to drain it either; just turn the isolation taps. withdraw the magnet and then open the drain tap and half a litre of water and crud falls out.

It will also take half a litre of inhibitor as well. So its a nice easy way of introducing inhibitor into a sealed system - once you have drained the crap, you can refil with inhibitor, put the magnet back in its sleeve and then open the isolation valves.

Reply to
John Rumm

I have an early version of the Magna Clean filter.

Downsides have been:

Needed new isolation valves after 3-4 years - replaced FOC. Needs new lid seal every couple of years - replaced FOC.

Phil

Reply to
thescullster

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Phil

Reply to
thescullster

But if you're using a decent inhibitor and keep it up to strength, where do the magnetic particles and crud etc come from?

Reply to
Dave Plowman (News)

I was told (by a plumber) that it's wise to fit them to older systems when installing a new boiler. Something to do with it being difficult to completely flush the system.

Shouldn't think there's much point in a newer system.

Reply to
RJH

Or in one which has used inhibitor all its life. Like I'd hope all those on here. ;-)

Reply to
Dave Plowman (News)

You can get some galvanic corrosion even with inhibitor.

In many cases its difficult to be sure that a system has always been adequately protected (unless you installed and maintained it all from scratch)

If there is some corrosion, then you can't always guarantee to flush everything completely clean.

When I installed my new boiler, I flushed every rad individually with mains pressure water in both directions, for at least 5 mins per rad. However I still get a very small amount of stuff captured by the filter. (probably the equivalent of a desert spoon's worth of particulate and magnetite).

Reply to
John Rumm

Some of us have moved house. Nothing else was maintained either...

Andy

Reply to
Vir Campestris

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