Extending central htg piecemeal - can I use valves prior to new circuits?

[notgenuine]

Hi, I am currently fitting a new bathroom downstairs and will be putting in a CH radiator. I intend to install some more rads in time for winter but not yet (too many other things to do on the farm)

What I propose is : when I branch off the existing 22mm CH pipes to fit the bathroom rad I will put in 22mm Ts with one side going to the new rad and the other into a 22mm full-flow valve (see screwfix

so that I can just join up to this when I get time to install the other pipes/rads without needing to redrain the system.

The valves are suitable for water and steam so I assume they will be OK in a CH system.

Am I crazy or is this an OK idea?

Ken

[Grunff]

It's an excellent idea, and works very well. We did exactly this with our room-by-room renovation, and it worked a treat. Good choice of valve.

[fred]

In article , [e-mail] writes

Yeah, done that, add a stop end on the end of the unfinished section just in case & to stop shit getting in, it can be an easily removed speedfit type one.

[The Natural Philosopher]

It's fine. Simple screwdriver operate ball valves work and are a teeny bit cheaper. I used em for balancing my otherwise not regulated fan blown hot water driven hot air units.

They are also great for isolating sections to speed up bleeding.

If you have several #zones' put them on each one: That means you can isolate and bleed section by section, and maybe even not have to drain the whole system if things go wrong..

[hzatph]

Excellent idea

[Andrew Gabriel]

I did something similar. I installed the heating upstairs first, and the following year, did the downstairs. These are separately isolatable with full bore valves. If one of the zones sprung a leak, I can isolate it and keep the other zone working. I can also drain them separately.

[notgenuine]

Thanks for all the positive feedback - it's always good to know something works before you try it!