I bought from a store. I have newer radiators as well here, the Danfoss using the M30 adapter connects perfectly. So I have 2 types of existing TRV and they are not interchangable. I've just ordered a 28mm to 30mm adapter. Fingers crossed!
Hi guys, struggling here trying to replace existing Drayton TRV with Danfoss. The Danfoss has 2 adapters RA and M30 but neither fit. The M30 appears to be just a little too small. My existing Drayton TRV is old. What adapter do I need?