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The system is now nice & quiet :) (this morning) & no signs of water coming from the overflow! will check again tonight. Thankyou very much for your help, it is very much appreciated.

Hello & thanks for the early reply. The pump was on speed setting 3 (Grundfos) which I have now lowered to 2, the vent comes of about 3 inches before the feed before the pump. I have bent the float valve to make the water level much lower in the f & e tank & turned the boiler down to about...

Hello all, My F & E tank was overflowing quite a lot before Christmas so I installed a new plastic type float valve (vertical type) which stopped the problem for a week or so. I installed a good old ball type float valve & this again stopped the problem until this week when I noticed again a...