New Rad not getting hot, single pipe CH system (partial)

[matt-l-p]

Thanks
I have 2 other column rads on the 1 pipe system, which are both piped into the bottom of the rad and work fine, so that's what I did with this, I know you can put the feed into the top of the rad, buy can't see it making any difference as it is so poor right now.

The valves are what I have used previous with success, manual angles valves 15mm, which seem to be full bore and not restrictive.

I unpacked etc myself so pretty sure there isn't any bungs etc in there

Thanks for your suggestions, and open to suggestions

 

[Gasmk1]

there is a big difference between the bore on a normal try and one designed for one pipe as the one pipe one uses gravity to feed the rad not the pump your flow is bypassing the rad.

 

[matt-l-p]

Thanks, has anyone got any links for single pipe system valves ? Can't find any online

 

[Gasmk1]

Danfoss Randall RA-G Single Pipe TRV Body - https://www.heatingcontrolsonline.co.uk/danfoss-randall-rag-single-pipe-trv-body-p-1195.html they are not cheap

 

[matt-l-p]

Thanks I've found the lockshield too, are they suitable for 15mm pipe, or have to change to 22mm ?
[automerge]1606568983[/automerge]
Thanks everyone, thought I'd give you some feedback. I converted it to a 2 pipe system, 22mm feed in and guess what it still didn't work !
So I put in the baffle/ diverter and now works 😀😀😀
Should of put it in to start with but the instructions said not to. Oh well lesson learnt.

About 3 days on it and a few trips to Screwfix haha