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knocked the Tado head off
This is why I replaced all of our rad valves. The adapters are rubbish.
how do I stop it filling up?
Don't you just raise the ballcock in the tank? I've no idea, to be fair.
NotThamesWater-
Replacing them is part of the long term plan. All but one of ours needed the worst of all the adaptors.
Ballcock? I don't know, hence the question. Will take a look at the tank later. It's in ms_com's office.
I've asked the plumber who fitted the towel rad to quote seeing as he's already done that kind of work here before. If he says anything less that £200 I'll probably just throw money at him. But it would be good to know how to do it if he comes back with more/is too busy.
The pipes are about crusty going into the old TRVs, what's the best way to clean those up/prep them for a good fit with the new ones?
stevo_com
TRV in the bedroom is leaking slightly when the plunger is activated. Also, ms_com knocked the Tado head off it without telling me, which meant it failed open and the bedroom was 27 degrees when I woke up in a puddle at 3 am. Going to replace it with Drayton that doesn't need an adaptor for the Tado so it's less likely to be knocked off. Two other rooms on the same floor have their rads off the wall so may as well update those while I'm at it.
The only problem is, if I get get the system drained, I'm about 90% sure I can do it myself. Only problem is, while I know where a good drain point is, how do I stop it filling up? It's an open system with an F&E tank in the loft extension. Do I stop the water there or at the house stop cock?
What other things don't need to consider? I'm comfortable draining and removing a rad, just never drained down the whole system before. Got a plumber in to swap the rad in the bathroom as it needed some pipework rearranged. This is just swapping old TRV bodies for new. Online how tos don't mention anything about prepping/cleaning pipes once the old unit is of for example.