what size pipes to plumb ratiators?

Question

do i need 3/4 pipe to run along the floor and connect the rariators with 1/2 pipe off it they will be just 3 radiators altogether on the one line

do i need 3/4 pipe to run along the floor and connect the rariators with 1/2 pipe off it they will be just 3 radiators altogether on the one line

Answer 1

Do not use 8mm as someone suggested! Take 22mm from the boiler, get 2 x 3 way 10mm multi connectors, take 22mm to near first radiator, then just feed 10mm plastic pipe (if hidden) to the other two, don't put more than 2 thermostatic valves on the rads, leave one with lockshield both ends (in same room as room thermostat), and keep them open so heat can always return to the boiler. No need for 15mm right to the radiator because the inlet on the valves is only around 6mm, you could put 28mm in there and not get any more heat, this is the cheapest and easiest way to do it.

Answer 2

You will need to have 22mm ( 3/4inch) pipes from the boiler for the heating pipes. Run these under the floorboards, upstairs, and tee off to the rads in 15mm pipe(1/2 inch). To run 2x22mm pipes on the floor from the boiler can cause problems such as doorways etc.

Answer 3

depending if this is a new system or if your simply adding on if your adding on from a 22mm supply found under floor boards or where ever use 15mm why not call someone in to give you a quote it may be cheaper than you think and you've got guarantee.....
All the best HND plumbing and heating North Wales
07824339670

Answer 4

15mm or 3/4 "

Answer 5

15mm pipe will be fine for all of it

Answer 6

bazza is faulty in his answer ..sure the nice and comfortable is allways 22mm however the chilly is allways 15mm ...I honestly have put in thousands of baths with the aid of the years and my plumbers have allways completed it that way ...with out me telling them

Answer 7

15mm std or 8mm if microbore

Answer 8

15mm.

Answer 9

3/4-INCH