Adding a radiator to a system

[Ronob]

I am working on a project to build a conservatory this summer. I want to put one radiator in there but the routing of pipes is going to be a major job unless......

On the outside wall - which I'll be dead centre of my conservatory - is two drain valves for the system. I'm thinking if they drain, they must also connect! Can I connect a radiator to these valves and add new drain valves? What would be the best way to do this and how can I tell which is the flow and which the return pipe?

 

[danplumb]

If you can remove the drain off valves and connect new pipework to the existing pipework then yes, you dont need to know which is flow and return aslong as you use Bi-directional TRV which most are.

 

[danplumb]

Obvyesly check the valves are heating circuits first and not hot and cold drain offs.

 

[Ronob]

Obvyesly check the valves are heating circuits first and not hot and cold drain offs.

Excuse my ignorance, what is a hot and cold drain off?

All I Know of these valves is that they drain the water from the heating system which, if it matters, is an old header tank in the loft system with pump to rads and gravity to hot water tank and bathroom rad.

Thanks

 

[danplumb]

Hot and cold drain offs = just drains off valves to drain off your hot and cold water supplies to your taps. Aslong as they are heating circuits and the valves and be removes and the new pipes attached to the existing pipes you`ll be fine.