Changing radiator with new valves and reducers

[Jimmyk]

Hi all,I am looking for some advice,I am doing a bathroom refurbish for my daughter,I have to change the existing radiator for a newer type,my problem is as the lives in a ground floor flat,I do not have access to any loft header tank.I am surmising it is a gravity fed system,it is not a combi system,and the boiler is old.would I be correct in turning off all radiator valves ,that way any water loss is only what's in pipe from bathroom to next radiator,is this feasable ? also as I am fitting new chrome valves could i use 15mm chrome pipe with the reducers below floor surface?the pipework is microphone,any answers would be appreciated,cheers

 

[Deleted member 120897]

Yes don’t sing into the pipework, might make it leak

the pipework is microphone

Seriously though, post a photo of the boiler, it could be a sealed system type. If it’s a loft type, you’ll get all above water draining our I’d expect, unless there’s any isolation valves?

 

[Chuck]

With a flat you need to double-check what the position re alterations is in the lease and/or freeholder and/or management company before starting work. If it is a gravity system you should be able to gain access to the header tank, which may be in the roof, but you may need to ask the freeholder for access.

If should, of course, be possible to access all the stopcocks needed to isolate the flat in an emergency. If the owner is not clear where these stopcocks are and/or what they do then you should investigate and document your findings for the owner as part of the refurb.