Availability: Included in the tado° package Slightly pull the adapter open and place it firmly over the rim at the back of the valve. Related ArticlesHow do I mount the adapter for Vaillant 30.5 mm radiator valves to fit my Smart Radiator Thermostat?How do I mount the adapter for Giacomini 22,6 mm valves to fit my Smart Radiator Thermostat?How do I mount the adapter for Danfoss RAVL 25.5 mm with 4 notches radiator valves to fit my Smart Radiator Thermostat?How do I mount the adapter for Danfoss RAV 34 mm with 4 notches radiator valves to fit my Smart Radiator Thermostat?Do I need an adapter to mount my Smart Radiator Thermostat X?