if the moderator actually allows me to post - for anyone else who wants to know the trv has a restrictor adjustment below the valve head which is used to adjust balance.
Just noticed, below the trv head the pin is surrounded by a plastic collar markerd 1-10 which can be turned down/up. Is this the flow adjustment for balancing the TRV?
My radiator system is microbore. Some radiators have Honeywell TRVs These TRVs can apparently be fitted on either inlet or return pipes. 3 of my TRVs are fitted to return pipes and these radiators all fail to heat up properly and are cool at the bottom. Presumably because water is escaping too quick...
