- Joined
- 19 Mar 2007
- Messages
- 692
- Reaction score
- 5
- Country
Hi guys - I'm gonna replace a radiator downstairs, it's a bit old and gone rusty and is a single panel, going to replace it with a double panel, double convector..anyway this old radiator has two locksheields at both ends, I remember the plumber installing it years ago saying that one radiator in the system needs to be constantly open to allow for flow to and back to the boiler. Is this true? Or shall I put a trv one end a locksheild the other?..ta