Recent content by BAZ53

I have a problem with water hammer when 2 of my rads TRVs shut down. Both rads are on the 1st Flr end of the pipe run. There,s a total of 6 rads all have TRVs. The system must be 20 years old. Open vented , gravity hot water. Rads and valves 1 year old,no problems with air in the system...