TRV/Thermostat Radiator ValveADAPTOR FOR Danfoss 22MM "Revolver" Model ONLY. Suitable for older, pre 1999 radiator Valves with the now Obsolete 22mm Clamp or Clip fitting, and this then Converts it to the Modern 2025 Standard 30mm/M30 Ring-Screw fitting.
eBay