Issue replacing 22mm pipe on central heating

[kristeva]

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]

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]

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]

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]

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

 

[opplumbinghub]

Fitting a coupler near a bend can be tricky because the pipe might be slightly bent. To make it easier, you can use a tool to round the pipe and sand the ends to smooth them out. Adding a bit of silicone spray can help the coupler slide on, and gently warming the coupler might also work. If it’s still too tight, you could try a slip coupling or cut further back to a straight section of the pipe. For an easier fix, compression fittings are a good option. If you need help, OP Plumbing Hub is always here for expert advice!