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.
- posted
15 years ago