Recent content by squintnose

John, Thanks for your reply. Recognise that the TRV4 is a straight replacement for the TRV3, but am trying to do this without having to dismantle anything. This conversion valve is actually called a TRV 4c. Regards :)

I need to update some radiator valves in the house and currently have a mixture of Drayton TRV3 (I think) and Drayton TRV4's. The Type 3 has a plastic insert onto which the head screws, but it is very vunerable to knocks hence the need to replace. I read somewhere that Drayton do/did a...