You can discuss your options with your local installer. With underfloor heating, unfortunately, it is not quite so easy.
Return valves were used in many district heating installations in the 1960s in particular, so it is an older technology. The advantages of changing to one-way valves are – besides having the opportunity to use electronic thermostats – that the heat can be more precisely regulated, which in turn leads to increased comfort and considerably improved energy efficiency.
We also recommend replacing older valves with valves with pre-setting in order to ensure the best possible cooling and thus energy savings in the radiator.