i am about to change my radiators and valves for new ones. at the moment i have 8mm micro bore and 2 pipes enter into 1 valve. the other side is just blanked off. is it ok to take 1 pipe to the other side of the rad and fit a lockshild while fitting a trv on the other side. ( i am assuming that the 2 pipes into the 1 valve are still flow and return.)
also the bar pressure at the boiler for the radiators is at 3.4 bar and climbs very slowly through the year. to reduce the pressure i have to bleed a rad. what could this problem be.