Fratelli TRV valve M28 x 1.5
I am interested in fitting out my home with Tado smart trvs, i currently have Fratelli TRVs which I believe are an m28 x 1.5mm thread.
In your documentation, you state that these valves are not support with adapters, but other M28 x 1.5mm valves are. I would like to know why they are incompatible, do you have a dimensioned cross section of the M28 adapter, that i could reference to see if there is anything I can do to make the adapter work?
I am not able to change the TRVs in my house as I have 14 radiator, and the cost of this would be prohibitive when then combined with the costs of tado.