I have to route blue MDPE (plus insulation) round a couple of bends (through the foundation, then up to the stopcock) inside 110mm drainage pipe, and I had a look at the MDPE in wickes. It doesn't look very flexible, so what is the smallest bend radius you can use ? Would it go through a standard rest bend OK ? Simon.
MDPE bend radius
Mar 14, 2008
6 Replies
If its the same stuff as my water main inlet then that comes through 110 mm pipe with a 90 degree on the end. No insulation though.
Does it appear forced against the edge of the pipe where it exits, i.e. trying to fight against the bend ? Is is a standard sharpish 90 degree bend ? Maybe I am just being a wimp about this ! Simon.
Not that I can see but I think there is a short straight which helps.
Can you not just try it and see first?
Yes, but I'd like to be able to order the lot in one go. I think I have convinced myself to use rest bends to bring the water up. It must go round them, I mean drain rods do ! I've also managed to work out a layout for the ducts, so that my drainage and water do not get into a total tangle ! I'll let you know how it goes. Cheers, Simon.
I've put the same MDPE into SWMBO's greenhouse through similar ducting,with a 90degree elbow. It went through just fine, but it was un-insulated.
It's flexible enough, when the push comes to the shove. Literally.
Did it push against the outside edge of the duct? Yes. But it was not a problem.
If you're nervous, use ( or crate ) radiused bends. But no need, IMHO.
What happens if you warm it up first by immersion in hot water?
David
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