Hi
I have found out that my 3 port mid position valve is nt working and have to buy a new one. It is a Landis and Gry MAV 322 I think it has 22mm connections on it.
It seems you can no longer get these but may be able to get a similar one from siemens. But these do not have the removalbe...
Hi
I have an old back boiler which runs the hw and ch in my house. it has been running fine for the last 6 years being here.
I replaced the timer which was an old switchmaster (clicking thing) to a newer drayton tempus 7 a couple of years ago and all was working fine till now.
When the...
