Issue replacing 22mm pipe on central heating

kristeva · Nov 13, 2024

Hi all

I was hoping to make good this corner of my central heating (22mm) (where the old magnet was) and fit a new Adey Pro 2 just above but on cutting the pipe at the lower end its really difficult to get a coupler on. I tried chamfering the pipe as much as I can but its a struggle to get the coupler on and I know with flux it will probably be worse. I'm guessing this is because its coming off a bend and it may have distorted the pipe a little? I can get it about 1/2 to 3/4 of the way on, I dont want to force it in case I cant remove it after sizing up the rest of the pipe run.

Are there any tricks I can use here?

Or should I try and cut further back (2nd photo)?

snowhead · Nov 13, 2024

If it's the end with yellow tape on it looks to be kinked as the bend finishes, it's probably been flattened by the pipe bender and may be beyond salvaging.

A few possible solutions,,

Massage the pipe end with 2 blocks of wood, or a wooden mallet / block of wood if you have one.
Tapping a compression fitting on can usually force the pipe end close to being in shape, then finish with blocks.
Cut the bend off altogether and use coupling / short pipe and elbow in the corner.
Cut the bend off and you'll see how flat it is and be able to staighten it out, then use a coupling to join it back on.

kristeva · Nov 13, 2024

snowhead said:
If it's the end with yellow tape on it looks to be kinked as the bend finishes, it's probably been flattened by the pipe bender and may be beyond salvaging.

A few possible solutions,,

Massage the pipe end with 2 blocks of wood, or a wooden mallet / block of wood if you have one.
Tapping a compression fitting on can usually force the pipe end close to being in shape, then finish with blocks.
Cut the bend off altogether and use coupling / short pipe and elbow in the corner.
Cut the bend off and you'll see how flat it is and be able to staighten it out, then use a coupling to join it back on.

Thanks for that, do you know what I completely forgot about the option of using a 22mm compression fitting until you mentioned it.

I might cut the pipe further back, I was just a little worried as the boiler is the other side of that wall and I didn't want to get to a scenario where I had to replace the whole pipe to the boiler as it seems a bit tight round there.

kristeva · Nov 13, 2024

snowhead said:
If it's the end with yellow tape on it looks to be kinked as the bend finishes, it's probably been flattened by the pipe bender and may be beyond salvaging.

A few possible solutions,,

Massage the pipe end with 2 blocks of wood, or a wooden mallet / block of wood if you have one.
Tapping a compression fitting on can usually force the pipe end close to being in shape, then finish with blocks.
Cut the bend off altogether and use coupling / short pipe and elbow in the corner.
Cut the bend off and you'll see how flat it is and be able to staighten it out, then use a coupling to join it back on.

How exactly so you mean massage with 2 blocks of wood, are there any videos of this on YT?

kristeva · Nov 13, 2024

All sorted now, decided to cut further back and coupler fitted fine.

Issue replacing 22mm pipe on central heating

kristeva

snowhead

kristeva

kristeva

kristeva

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