It turns out that the valve shown in the foto above is indeed the RA-N type, and the adapter I ordered fits perfectly, as shown in the attached photos. If you're looking for this adapter, you can...

Thank you very much for your helpful overview of valves and adapters. I studied it thoroughly, and I now believe the Danfoss valve on my radiator is of the RA-N type. This might explain why none of...

Hi everyone, I recently purchased the TP-Link Kasa KE100 smart thermostat, and I'm having trouble installing it on my radiator. The valve on my radiator appears to be a Danfoss RAV (update: RA-N!)...