Plumbers - bending 15mm copper - how tight can it be done?

No pinholes in fresh, new copper pipe

 

Agree but this was when there was shortage of good copper in UK .. so stuff was imported …where could that possibly go wrong ?
I saw this “ copper “ ripped out , as I was not not convinced. When I saw it I was !
So it probably depends on the quality of “ fresh new copper pipe” we all know that it is thinner now but tradesmen in the 70’s “perhaps “ thought the gear was ok ( perhaps they didn’t ,who knows )
By the way , don’t know , where does our “ fresh new copper pipe” come from ?

 

Yorkshire, of course!

https://yorkshirecopper.com/about/

 

Well, I said the same, but using joints doesn't rule out dodgy pipe does it?

 

Why can’t you use lead pipe?

if it’s good enough for Professor Plum in the library, it’s bally well good enough for @Zed the in galley.

 

A clever man solves a problem, a wise man avoids it….. is there no way of “adjusting “ the overall design, before floors and walls are put in place?
We mock car designers who place parts where they can’t be accessed once the vehicle is assembled…. just a thought…

 

Putting inaccessible joints under the floor would be just that wouldn't it?

Gotta get the pipes across a corridor to the bathroom. Original and what's left of the central heating was/is all plumbed down one side of the boat, the corridor side.

 

Solved, no joints under the floor

 

I see @Merlin Cat has been round to sort out your pipework!!





I know, she's gonna kill me!

 

I'd use one of those crinkly ones if I could get one long enough.

 

Just hoping to give you a “light bulb” moment…. I’m sure all options will have been considered.

 

I think so, but any brainwaves will be gratefully accepted!

 

A section of microbore.
Fending off 'The Devil's Work',
it's surprisingly how well microbore piped radiators work and a neat install.
Proven system and very ductile.

 

Have you looked at Tectite pipe plastic with a aluminium layer that you can bend and it retains shape afterwards comes in various lengths I believe.

 

I'd be concerned that microbore would prove to be a bottleneck. I could balance with the valves on the other rads, but my header tank is only about 18" above the tops of the rads so I can't run much pump pressure or it just heads for the header tank. Kind of slowly wafts around the system which suits the small back boiler on the stove.
Full on pressurised microbore systems work great, I had one installed in my first house. No argument there.

 

Here is a clip

 

We've used something similar for our still-not-commissioned roof-to-ground heat store... normally used for underfloor heating systems ... plastic/Aluminium/plastic sandwich.
Nice to handle etc.
Word of warning would be: it tends to be 16mm not 15, so a 15/16 compression joint needed if you're going back to copper for rad tails.

 

Pretty cool! How annoying that they made it 16mm though.

 

there is a company that makes 15mm of the same stuff i think its tectite but i can check if your interested

 

yeh here it is https://www.bes.co.uk/tectite-metal-15-mm-x-3-m-tectite-flexible-metal-straight-pipe-21664/