"dennis@home" wrote in message
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"Dave Plowman (News)" wrote in message
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Using inhibitor on a leak free system is the cheapest way to prevent
corrosion. Filters are simply unnecessary. If they were a requirement
boiler makers would fit them.

Eaga insist on having a spiravent fitted to the systems they pay for.

I googled for info but its very limited.
The plumber said there was a drain on it to remove the dirt but to ignore
it as it would never get dirty as long as the inhibitor wasn't drained.

until the inhibitor loses is effect then corrosion starts.