Sleeving pipe

[tabbypurr]

What can one use as a sleeve for 22mm Copper pipe? That's 22mm OD. It should be plastic, but I don't see anything of nearby size.

NT

[Jonno]

[e-mail] scribbled

Have you tried knitting one.

[ss]

This any good?

[Tricky Dicky]

If it is to sleeve a section passing through a wall then 32mm waste pipe will do. I have seen Climaflex type insulation used, downside it requires a large hole but offers an air tight seal around the pipe.

Richard

[newshound]

ISTR that I have used 22 mm "speedfix" pipe, also some of the flexible electrical conduit is a similar size.

[tabbypurr]

should be plastic, but I don't see anything of nearby size.

trouble is it only goes part way round

NT

[polygonum]

How about:

FloPlast PEX Pipe 28mm

Or, possibly a bit too wide:

Solvent Weld Waste Pipe 32mm

[tabbypurr]

32mm waste was the next size up I could find. But it's huge, it would require a very oversize hole in a tight space, and the space between the 2 pipes would need packing with I don't know what. 21.5mm couplers are very close. But, you guessed it... 0.5mm too tight! I wonder if I could get a 22.5mm drill bit.

Turns out I can, 23mm for a fiver off amazon. Maybe I'll take that option if I can't find the right pipe.

NT

[Tricky Dicky]

25mm PVC conduit might take 22mm pipe and you should be able to get a 25mm diam. drill easy enough.

Richard

[newshound]

DOH I meant I have used 22 mm plastic water pipe for 15 mm copper. I think I have some plastic conduit which is slightly smaller than 32 mm waste and which does take 22 mm copper. Sorry.

[tabbypurr]

I'll check that out, thank you. I'm not confident the wall will be thin enough but maybe it will

yes... is it wise to go for such a close fit?

NT

[tabbypurr]

I was thinking that would be a bit tight :)

NT

[PeterC]

Looking at the 25mm electrical conduit (white plastic) that has the aerial cables in, it looks about 1mm wall thickness and so 23mm ID.

On the pipe, doesn't matter; for the drill I'd want at least 26mm+sodslaw extra.

[John Rumm]

28mm copper is the normal option when say taking a gas pipe through a wall.

[tabbypurr]

thanks for the suggestions, will check it out when I go there next.

NT