Radiator fitting advice

Help Support The HomeBrew Forum:

Aug 31, 2013
Reaction score
Biggest issue is that old rads are imperial sizes and new ones aew metric which means that the pipes are to fare away to connect with rad. I've used these in the past. They are cutable to size and screw into rad where valve goes.


Well-Known Member
Feb 4, 2021
Reaction score
Yes, hang radiator first then cut pipes to fit. If you've not taken a radiator out before be aware the "water" inside can be black. After draining the system there will be, depending how old the radiator is, black gunk in the bottom. So when you disconnect the rad from the valve make sure you've got a container underneath to catch any drops and turn the rad upside down (making sure bleed screws are tight) asap before you carry it out of the house.

Definitely my preferred plan of attack, in terms of rad 1st, then couple up piping 😁

I've seen compression elbows with isolation valves incorporated, so I think I'll use those, rather than 2 separate elbows & isolation valve at each end

I've heard about the black sludge, and what delights it can do to carpets, especially pale ones! 😉

Good call with turning it upside down to transport it outside! 👍