PE-X elbow in concrete floor?

[turpis]

I'd like to have a freestanding column radiator in a room with a concrete floor slab. This means the pipes need to come up out of the slab at either end of the radiator. Simplest option considering corrosion, insulation and installation seems to be PE-X pipe that has a 90 elbow up to the surface into a copper tail for the rad. I believe it's fine to bury PE-X in concrete directly but I've read that joints are a no-no. Is this so or is it just a nightmare if the joints are installed incorrectly in the first place?

 

[Tetrarch]

Could you not just bury the pipe a little deeper and use a cold forming bend and avoid a joint entirely?

Regards

Tet

 

[turpis]

Could you not just bury the pipe a little deeper and use a cold forming bend and avoid a joint entirely?

Regards

Tet

Min radius for a 15mm pipe is 100mm which I don't fancy chasing out of the slab, besides I'd still need a straight coupler below the surface to join into the copper tail.

 

[Tetrarch]

I'd use a "chrome" pipesnap straight over the plastic and an insert to the rad

Regards

Tet

 

[turpis]

I'd use a "chrome" pipesnap straight over the plastic and an insert to the rad

Regards

Tet

Good suggestion but I want to see copper to match the rest of the house and still would require me to dig out 100mm of the slab!
Thinking on it I could bury the continuous PE-X in concrete, then just have a small area at the end of each pipe ~50x50mm where the 90 elbow sits and fill this with expanding foam so it's semi-accessible. Will be covered by a wood floor and next to the rad so shouldn't be disturbed much.

 

[Madrab]

Any connection in concrete needs to be accessible so the only proper way really would be to create a couple of open sections in the crete with covers and the connections sits in that and the pipe can then rise out of them up to the rad.

Min radius for a 15mm pipe is 100mm

BTW - 75mm radius cold formers for JG and HEP on 15mm

 

[Tetrarch]

These would work - no?

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Regards

Tet