The MV2-22C Tower Valve on my central heating has failed and I shall have to
replace it.
I checked the price etc with a company called TFC and from them I see that
it is possible to replace the valve without draining the system however this
seems to be contradicted by their statemant that the replacement valve
includes compression fittings. I cannot see a need for compression fittings
unless the replacement valve (or motor etc) is subject to water pressure.
I opened mine up this afternoon and found that the problem appears to rest
with the spring that is pushed back against the micro switch; meantime I
have inserted a small packing piece and that has got it working but of
course that is temporary.
When I eased the pressure on the studs into the base plate then water
started to come out so I had to tighten them again.
Does anyone know if it is possible to replace this Tower Valve withoug
having to drain down the central heating system?
Thank you.