Availability: Included in the tado° packageSkip to 2:27 to view the section for the Caleffi adapter. Slightly pull the adapter open and place it firmly over the rim at the back of the valve. Related ArticlesDo I need an adapter to mount my Smart Radiator Thermostat X?How do I mount the adapter for Danfoss RAV 34 mm with 4 notches radiator 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 M28 x 1.5 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?