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double checked the expansion vessel using 1 of these 12v comp & it has pumped it up to 10psi which has dropped t o about 8 over a 12hr period. I had been checking for loss of pressure over say a 4wk period & it had lost maybe 1/2 a bar. I then topped it up.. When I checked again it had risen to...

I have removed the cap & pressed in the valve & dirty water has come out. Pumping it up doesn,t make any difference so it looks like its goosed. Can u recommend a site for the tank 12ltr 320mm dia x 160thick approx The mixer valve connections are not comp fittings, it uses like a domed rubber...

Hi oilhead thanks for that. That is useful info which I will remember next time! I needed to drain down fully because the external drain cock had split thro the frost & needed replacing& now after checking the expansion tank (thanks to dccawkwell) I need to replace that. Can I replace it with...

Thanks for that info I will check it out manuana? What a great site tthis is Tel

leave no corner uncut

We Have a warmflo combi oil installed in 2008 & have had afew problems,not major, but now have major leaks on the heat exchanger due to perished seals. There is 1 thing which I would like to do whilst it is drained down & that is some sort of safeguard to switch off the boiler when the pressure...