Further to the thread 'hot water go slow' about our mains pressure hot water tank slowing to poor flow the bloke who serviced our boiler has sent me a note saying that the problem is "undoubtedly the CWCV".
This is not the pressure relief valve but I can't work out what this is
- presumably the V stands for valve but what is CWC? I believe it has springs inside.
He's given me the name of someone who can fix this who hopefully is around.
On this topic, I hadn't appreciated that these unvented hot water pressure systems are quite complex and potentially dangerous and advice seems to be that they need regular servicing or checking - is this correct?
E.