Replacing horizontal with vertical radiator - pipework

[jhammer]

Hi

Please need advise. I have a horizontal radiator in my living room. I need to replace it with a vertical radiator but to a different wall. The new place is not far, but still need to extend the copper pipe. Now a friend has helped with a spare piece of copper pipe 15mm to compare with my existing copper pipe to estimate the size of the pipe I currently have, which seems is 10mm pipe. My question is will the vertical radiator work on 10mm pipe or should I extend the pipe with 15 mm pipe?

Thanks

 

[denso13]

If your existing pipe is 10mm, and you are not going too far, just extend with 10mm.

 

[jhammer]

Thanks Denso, but just found that the pipe is actually 8mm, my mate came down to help me identify the pipe size. It seem 22mm pipe from boiler to a certain point and from there all radiators got a feed on 8mm pipe.

My project is to replace all radiators put TRV with them and also replace the radiator in the living room with a vertical radiator on another wall. I wanted to use the Drayton TRV 4 with all radiators but cant find one 8mm size.

Should I get a 8mm trv for all the radiators except for the vertical one or shall I use reducer and use 15mm trv for all the radiators?

Please can you advise the best possible way?

Thanks

 

[Jamesie]

If your continuing with 8mm to extend, id buy a trv for 8mm just for neatness, rather than having a reducer etc. just an example http://m.wickes.co.uk/mt/www.wickes.co.uk/8mm-angled-body-trv/invt/228642/