I recently installed a central heating system and left the cellar with both LSVs. The problem is there is a double convector 600x1600 down there and it is rather too powerful for the room.
Everywhere else there is a TRV and it is not as simple to replace as the TRV and the LSV are different lengths.
Are LSVs available in the same length as TRVs, Length as in from the radiator sidewards to the pipe.