Changing TRVs on a 10mm Microbore System

[HazelT]

Hi. I need to change a few TRVs on my radiators. Its a 10mm Microbore system. I'd like to be able to undo the nuts, take off the old one and fit the new one with the same nuts, in order to save time. Here is a photo of an old one. It looks like there is a reducer piece under the TRV rather than a standard compression fitting. Any ideas about a TRV product that I could use as a replacement, or am I going to have to strip the 10mm pipe?

 

[Harvest Fields]

Think Drayton do one like that. But cannot remember the type off the top of my head. But would be hot and miss if they do what you want them to.