The diaphragm in the pressure vessel for my CH system has failed - water dr ips from the Shrader valve when it is opened.
Pictures are here:
So, what should be a simple job is on the cards for next weekend. Doubtles s I will be unable to find an identical replacement so will have to create some pipework between the new PV and the existing over-pressure valve. Tha t aside, the following (possible) problems come to mind:
[1] How do I grip the PV such that I can unscrew it from the OPV without da maging the valve and/associated pipework? I wondered about using a big oil filter strap wrench, i.e. a ratchet strap round the PV and gripping the OP V with a suitable spanner. Note that the threads on the PV appear to be r usty. [2] Should I replace the OPV as a matter of course because it has been open ed to reduce the system pressure when I realised that the diaphragm had fai led. [3] It looks to me from the photo that the PV is lowered into a notch on th e wall bracket which may mean that [2] is a redundant question as I may hav e to cut the OPV valve pipework to remove the PV.Do any other suggestions or helpful tips spring to mind?
Ta
Richard