how do I fix a SUNVIC thermostatic radiator valve?
The head broke off the thermostatic radiator valve and I want to fit a new head, if that's possible, without having to drain the system and fit a complete new valve.
most trv head are removable either by a nut alan key screw or twist and click always good to make sure the pin is moving in and out on valve whilst you have the head off as they tend to seize up due to system sludge
