Radiator Valve/Trap Recommendation

Cyclone33

I’m looking for advice on what radiator valve and steam trap I should install on one radiator in my house. I’m in eastern Iowa with a two‑pipe steam system, originally built as a Trane Vapor system.

All of my other radiators follow the same piping layout, and I’ve attached a picture showing how they’re set up. This one radiator is the oddball — at some point it had a different valve and trap installed, and neither were working correctly. Since original Trane Vapor components aren’t available anymore, I need modern parts that will behave correctly in a low‑pressure vapor system.

Thanks!