Add new radiator

[pach1962]

Hello I need to add two new rads to my system, because the floors upstairs are all plywood with hardwood flooring I need to cut into the ceiling in the kitchen to add a rad, I know where the pipework runs is it ok to add in a tee piece the run the flow and return down to the kitchen where there is no rad, there are no other pipes near that I can cut into, also can two rads be added into the pipes that I drop down, thank you

 

[Whitespirit66]

Sounds OK.
If you're running a single flow and a single return pipe down for the 2 new rads, you need to pipe them in parallel, not series.

 

[pach1962]

thank you, will that just mean two pipes down then tee off for each rad they are either side of a wall.

 

[Whitespirit66]

Put a tee into the flow pipe that runs through ceiling. Run 15mm pipe down from this tee and connect to the flow sise of one rad, them continue this pipe to the flow side of 2nd rad. Same with retun pipe - tee from return pipe in ceiling, pipe down and connect to both return sides of rads.

 

[pach1962]

Thank you that sounds great, is there anyway when I first drop the pipes down through the ceiling that I can use a shut-off valve as a temporary measure, be good for future maintenance etc can a normal shut off valve be used, thank you Paul

 

[Whitespirit66]

If it's only temporary, I would just put a couple of push-fit stop ends on the pipes. If you want to keep a means of isolation for these rads for future use, I would recommend using full bore lever valves. These don't restrict the flow when open.

http://www.screwfix.com/p/pegler-ball-valve-blue-15mm/11085

Not recommended to use standard isolation valves as used on taps, cisterns, etc. These aren't up to the job, and even when fully open, they restrict the flow quite a bit.

 

[pach1962]

Thats great thank you for your help greatly appreciated

 

[Whitespirit66]

No worries. Hope all goes well.