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DIY and self-construction: building or mount a self-installManufacture a multilayer tube straightener.

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izentrop
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Manufacture a multilayer tube straightener.

Unread Messageby izentrop » 17/06/18, 18:44

Hello,
I have an old central heating plant, which is leaked with tin-welded steel and copper-welded tubes. I decided to redo the multilayer piping diameter 20 and 16 before installing the new heater.

When we see the price of marketed rectifiersit's worth it to make it. I found lots of small wheels for a derisory take (2 times eight).

In a piece of 2,2 plywood cm thick on 40 long, I cut 2 boards 5 wide and 2 others 10 boards.
The casters are fixed all 12 cm and their thickness is 1.9 cm, which makes 5 cm of inner sides for 16 tube.

For the 20 tube, I would separate the sides of 4 mm with shims.

Not very aesthetic but does the job asked is the main : Wink:

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lilian07
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Re: Make a multilayer tube straightener.

Unread Messageby lilian07 » 20/06/18, 19:46

I like the idea.
I'm just trying to do the same thing with PEX 32 mm.
I imagine that the pipe is straight then.
Good installation.
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Re: Make a multilayer tube straightener.

Unread Messageby izentrop » 20/06/18, 20:40

PER PEX?

The multilayer contains a layer of aluminum and when you straighten it, it keeps the shape. The PER is only plastic. Not easy to straighten it, you have to exert a reverse twist and we quickly made an irremediable fold.

For the adjustment in diameter, instead of the screws that assemble the sides, I will put a metal plate at each end, with holes shaped light and a central hole for the passage of the tube.
It will be enough to loosen the screws to allow adjustment, provided that it does not slide too easily.
Following the next number : Wink:
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Re: Make a multilayer tube straightener.

Unread Messageby Christophe » 20/06/18, 23:06

Good idea and easy to achieve, it's the time of the DIY with the recovery :) mine of the moment: gardening / build-and-a-house-hotel-a-bat-t15698.html

Otherwise I think that all PER (sold in France at least) currently have the anti-oxygen barrier (aluminum layer) ... except perhaps those for sanitary water?

I was going to propose also to think about a setting on the diameter! 8) If I understand your idea, I think you will need only a setting on 2 angles (2 L sliding so), it should allow to rectify most of the tubes PER market!
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izentrop
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Re: Make a multilayer tube straightener.

Unread Messageby izentrop » 21/06/18, 00:12

Christophe wrote:I think that all PER (sold in France at least) currently have the oxygen barrier (aluminum layer) ... except perhaps those for sanitary water?
It takes the name PER BAO in this case for heating (more expensive than sanitary) and it is not aluminum.
The oxygen barrier, consisting of a layer of EVOH (Ethylene Vinyl Copolymer) prevents oxygen from infiltrating. It thus limits the formation of sludge in the networks and promotes a greater longevity of the tubes in the installations. https://www.comap.fr/faq/est-interet-ba ... -sur-tubes
Christophe wrote:If I understand your idea, I think you will only need a setting on 2 angles (2 L sliding therefore)
I thought, given the width of the wheels, but shots, the support will not be centered on the axis of the wheel. I would see at the right moment.
As the pose is going to be apparent, the white multilayer is more aesthetic than the red or blue PER.
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Re: Make a multilayer tube straightener.

Unread Messageby izentrop » 21/06/18, 20:45

I took again your idea of ​​2 L sliding.

For this, I cut 2 squares of 11 cm in 1 plywood cm, pierced with a hole of 3 cm centered on the passage of the tube, which makes it possible to treat the tubes of 26.
The bottom L is permanently fixed with 3 screws on both sides.
The top one holds by the golden screws.

I set it for the 20 tube I'm going to put first and it works fine :D

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Re: Make a multilayer tube straightener.

Unread Messageby Christophe » 22/06/18, 16:21

izentrop wrote:I took again your idea of ​​2 L sliding.

(...)

I set it for the 20 tube I'm going to put first and it works fine :D


Uh yes once I'm not too bad in design : Mrgreen: : Mrgreen: : Mrgreen:
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